Merge pull request #19 from kkaefer/gl

Add support for generating WebGL colors

src/api.coffee

@@ -39,6 +39,9 @@ chroma.lch = (l,c,h) ->
 chroma.hsi = (h,s,i) ->
     new Color h,s,i,'hsi'
 
+chroma.gl = (r,g,b,a) ->
+    new Color r*255,g*255,b*255,a,'gl'
+
 chroma.interpolate = (a,b,f,m) ->
     if not a? or not b?
         return '#000'

src/color.coffee

@@ -90,6 +90,8 @@ class Color
         # create color
         if m == 'rgb'
             me._rgb = [x,y,z,a]
+        else if m == 'gl'
+            me._rgb = [x*255,y*255,z*255,a]
         else if m == 'hsl'
             me._rgb = hsl2rgb x,y,z
             me._rgb[3] = a
@@ -137,6 +139,9 @@ class Color
     hsi: ->
         rgb2hsi @_rgb
 
+    gl: ->
+        [@_rgb[0]/255, @_rgb[1]/255, @_rgb[2]/255, @_rgb[3]]
+
     luminance: ->
         luminance @_rgb
 

test/apha-test.coffee

@@ -53,6 +53,10 @@ vows
             'rgb output': (topic) -> assert.deepEqual topic.rgb(), [255,0,0]
             'rgba output': (topic) -> assert.deepEqual topic.rgba(), [255,0,0,0.25]
 
+        'gl output':
+            topic: -> chroma.gl 1, 0, 0, 0.25
+            'gloutput': (topic) -> assert.deepEqual topic.gl(), [1, 0, 0, 0.25]
+
         'rgba css output':
             topic: -> chroma.css 'hsla(0,100%,50%,0.25)'
             'cssoutput': -> (topic) -> assert.equal topic.css(), 'rgba(255,0,0,0.25)'