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Dynamic fix as fun (#207)

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getNeighborPixel(x, y) method for Dynamic module
This commit is contained in:
Varun Gupta
2018-03-31 03:11:30 +05:30
committed by Jeffrey Warren
parent 0ceb36ffde
commit fba80bb151
2 changed files with 49 additions and 26 deletions
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21
src/modules/Dynamic/Module.js
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@@ -35,15 +35,30 @@ module.exports = function Dynamic(options,UI) {
}); });
function changePixel(r, g, b, a) { function changePixel(r, g, b, a) {
/* neighbourpixels can be calculated by
this.getNeighbourPixel.fun(x,y) or this.getNeighborPixel.fun(x,y)
*/
var combined = (r + g + b) / 3.000; var combined = (r + g + b) / 3.000;
return [ return [
options.red_function( r, g, b, a), options.red_function(r, g, b, a),
options.green_function(r, g, b, a), options.green_function(r, g, b, a),
options.blue_function( r, g, b, a), options.blue_function(r, g, b, a),
options.alpha_function(r, g, b, a), options.alpha_function(r, g, b, a),
]; ];
} }
/* Functions to get the neighbouring pixel by position (x,y) */
function getNeighbourPixel(pixels,curX,curY,distX,distY){
return [
pixels.get(curX+distX,curY+distY,0)
,pixels.get(curX+distX,curY+distY,1)
,pixels.get(curX+distX,curY+distY,2)
,pixels.get(curX+distX,curY+distY,3)
]
}
function output(image,datauri,mimetype){ function output(image,datauri,mimetype){
// This output is accessible by Image Sequencer // This output is accessible by Image Sequencer
@@ -59,6 +74,8 @@ module.exports = function Dynamic(options,UI) {
return require('../_nomodule/PixelManipulation.js')(input, { return require('../_nomodule/PixelManipulation.js')(input, {
output: output, output: output,
changePixel: changePixel, changePixel: changePixel,
getNeighbourPixel: getNeighbourPixel,
getNeighborPixel: getNeighbourPixel,
format: input.format, format: input.format,
image: options.image, image: options.image,
inBrowser: options.inBrowser, inBrowser: options.inBrowser,

18
src/modules/_nomodule/PixelManipulation.js
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@@ -22,6 +22,12 @@ module.exports = function PixelManipulation(image, options) {
return; return;
} }
if(options.getNeighbourPixel){
options.getNeighbourPixel.fun = function (distX,distY) {
return options.getNeighbourPixel(pixels,x,y,distX,distY);
};
}
// iterate through pixels; // iterate through pixels;
// this could possibly be more efficient; see // this could possibly be more efficient; see
// https://github.com/p-v-o-s/infragram-js/blob/master/public/infragram.js#L173-L181 // https://github.com/p-v-o-s/infragram-js/blob/master/public/infragram.js#L173-L181
@@ -33,11 +39,11 @@ module.exports = function PixelManipulation(image, options) {
for(var y = 0; y < pixels.shape[1]; y++) { for(var y = 0; y < pixels.shape[1]; y++) {
var pixel = options.changePixel( var pixel = options.changePixel(
pixels.get(x, y, 0), pixels.get(x, y, 0),
pixels.get(x, y, 1), pixels.get(x, y, 1),
pixels.get(x, y, 2), pixels.get(x, y, 2),
pixels.get(x, y, 3) pixels.get(x, y, 3)
); );
pixels.set(x, y, 0, pixel[0]); pixels.set(x, y, 0, pixel[0]);
pixels.set(x, y, 1, pixel[1]); pixels.set(x, y, 1, pixel[1]);
@@ -50,7 +56,7 @@ module.exports = function PixelManipulation(image, options) {
} }
if(options.extraManipulation) if(options.extraManipulation)
pixels = options.extraManipulation(pixels) pixels = options.extraManipulation(pixels)
// there may be a more efficient means to encode an image object, // there may be a more efficient means to encode an image object,
// but node modules and their documentation are essentially arcane on this point // but node modules and their documentation are essentially arcane on this point