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a3bf9f6369
* delete old rails configurations * update pr template * update readme and docker image name * add a mysql setup file * update broken recaptcha link * use File.exist? instead * bump mysql2 * control mysql2 gem * add custom rake test functions to provide option to suppress warnings * small edit to mysql.md * another one * add rake task for total tests * add a require for sass gem * update deprecated URI.encode * undo a comment on Rakefile I made * ensure consistency for rake task names * migrate rake tasks to new branch * update readme * update encoding method
68 lines
2.1 KiB
Ruby
68 lines
2.1 KiB
Ruby
class Cartagen
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def self.chop_word(string)
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word = string.split(' ')[0]
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string.slice!(word+' ')
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word
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end
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def self.spherical_mercator_lon_to_x(lon,scale=10000)
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(lon*scale)/180
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end
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def self.spherical_mercator_x_to_lon(x,scale=10000)
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(x/scale)*180
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end
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def self.spherical_mercator_lat_to_y(lat,scale=10000)
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#180/Math::PI * Math.log(Math.tan(Math::PI/4+lat*(Math::PI/180)/2)) * scale_factor
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y = Math.log(Math.tan((90 + lat) * Math::PI / 360)) / (Math::PI / 180)
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y * scale / 180
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end
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def self.spherical_mercator_y_to_lat(y,scale=10000)
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#180/Math::PI * (2 * Math.atan(Math.exp(y/scale_factor*Math::PI/180)) - Math::PI/2)
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lat = (y / scale) * 180
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180/Math::PI * (2 * Math.atan(Math.exp(lat * Math::PI / 180)) - Math::PI / 2)
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end
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# collects coastline ways into collected_way relations;
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# see http://wiki.openstreetmap.org/wiki/Relations/Proposed/Collected_Ways
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def self.collect_ways(features)
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# collected_ways variable unused review this function
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collected_ways = []
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nodes = {}
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features['osm']['node'].each do |node|
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nodes[node['id']] = node
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end
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features['osm']['way'].each do |way|
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if way['tag']
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coastline = false
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way['tag'].each do |tag|
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if tag['k'] == 'natural' && tag['v'] == 'coastline'
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coastline = true
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break
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end
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end
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if coastline
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relation = {}
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relation['way'] = []
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relation['way'] << way
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# are a way's nodes ordered? yes.
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# check each way to see if it has a first or last node in common with 'way'
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features['osm']['way'].each do |subway|
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if subway['nd'].first['ref'] == nodes[way['nd'].first['ref']] || subway['nd'].first['ref'] == nodes[way['nd'].last['ref']] || subway['nd'].last['ref'] == nodes[way['nd'].first['ref']] || subway['nd'].last['ref'] == nodes[way['nd'].last['ref']]
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# we have a match!
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break
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end
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end
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end
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end
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end
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end
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end
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