File: greyscale.coffee

Defined in:

lib/psd/image_modes

Variables Summary

module.exports =

{
  setGreyscaleChannels: function() {
    this.channelsInfo = [
      {
        id: 0
      }
    ];
    if (this.channels() === 2) {
      return this.channelsInfo.push({
        id: -1
      });
    }
  },
  combineGreyscaleChannel: function() {
    var alpha, grey, i, _i, _ref, _results;
    _results = [];
    for (i = _i = 0, _ref = this.numPixels; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
      grey = this.channelData[i];
      alpha = this.channels() === 2 ? this.channelData[this.channelLength + i] : 255;
      _results.push(this.pixelData.push(grey, grey, grey, alpha));
    }
    return _results;
  }
}