Sha256: 5bbf3cb76c5cf6c8c690569bad0f7eef1c3e05ef24649b2104b761d250e8e069
Contents?: true
Size: 883 Bytes
Versions: 2
Compression:
Stored size: 883 Bytes
Contents
/*global INCLUDE, installColorSpace, ONECOLOR*/
INCLUDE('lib:color.js');
INCLUDE('lib:color/XYZ.js');
installColorSpace('LAB', ['l', 'a', 'b', 'alpha'], {
fromRgb: function () {
return this.xyz().lab();
},
rgb: function () {
return this.xyz().rgb();
},
xyz: function () {
// http://www.easyrgb.com/index.php?X=MATH&H=08#text8
var convert = function (channel) {
var pow = Math.pow(channel, 3);
return pow > 0.008856 ?
pow :
(channel - 16 / 116) / 7.87;
},
y = (this._l + 16) / 116,
x = this._a / 500 + y,
z = y - this._b / 200;
return new ONECOLOR.XYZ(
convert(x) * 95.047,
convert(y) * 100.000,
convert(z) * 108.883,
this._alpha
);
}
});
Version data entries
2 entries across 2 versions & 1 rubygems