# File: rgb.coffee

Defined in: | lib/psd/image_modes

## Variables Summary

module.exports =

      {
        setRgbChannels: function() {
          this.channelsInfo = [
            {
              id: 0
            }, {
              id: 1
            }, {
              id: 2
            }
          ];
          if (this.channels() === 4) {
            return this.channelsInfo.push({
              id: -1
            });
          }
        },
        combineRgbChannel: function() {
          var a, b, chan, g, i, index, r, rgbChannels, val, _i, _j, _len, _ref, _results;
          rgbChannels = this.channelsInfo.map(function(ch) {
            return ch.id;
          }).filter(function(ch) {
            return ch >= -1;
          });
          _results = [];
          for (i = _i = 0, _ref = this.numPixels; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
            r = g = b = 0;
            a = 255;
            for (index = _j = 0, _len = rgbChannels.length; _j < _len; index = ++_j) {
              chan = rgbChannels[index];
              val = this.channelData[i + (this.channelLength * index)];
              switch (chan) {
                case -1:
                  a = val;
                  break;
                case 0:
                  r = val;
                  break;
                case 1:
                  g = val;
                  break;
                case 2:
                  b = val;
              }
            }
            _results.push(this.pixelData.push(r, g, b, a));
          }
          return _results;
        }
      }

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