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# rgb.coffee lib/psd/image_modes/ |
--- | ---
¶ |
    module.exports =
      setRgbChannels: ->
        @channelsInfo = [
          {id: 0}
          {id: 1}
          {id: 2}
        ]

        @channelsInfo.push {id: -1} if @channels() is 4

      combineRgbChannel: ->
        rgbChannels = @channelsInfo
          .map (ch) -> ch.id
          .filter (ch) -> ch >= -1 # Mask data is -2

        for i in [0...@numPixels]
          r = g = b = 0
          a = 255

          for chan, index in rgbChannels
            val = @channelData[i + (@channelLength * index)]

            switch chan
              when -1 then a = val
              when 0 then  r = val
              when 1 then  g = val
              when 2 then  b = val

          @pixelData.push r, g, b, a

generated Mon May 11 2015 16:38:05 GMT-0400 (EDT)