flymis/WebRoot/dojojs/src/gfx/Colorspace.js
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/*
Copyright (c) 2004-2006, The Dojo Foundation
All Rights Reserved.
Licensed under the Academic Free License version 2.1 or above OR the
modified BSD license. For more information on Dojo licensing, see:
http://dojotoolkit.org/community/licensing.shtml
*/
dojo.provide("dojo.gfx.Colorspace");
dojo.require("dojo.lang.common");
dojo.require("dojo.math.matrix");
// to convert to YUV:
// c.whitePoint = 'D65';
// c.RGBWorkingSpace = 'pal_secam_rgb';
// var out = c.convert([r,g,b], 'RGB', 'XYZ');
//
// to convert to YIQ:
// c.whitePoint = 'D65';
// c.RGBWorkingSpace = 'ntsc_rgb';
// var out = c.convert([r,g,b], 'RGB', 'XYZ');
//
dojo.gfx.Colorspace = function(){
// summary
// An object for dealing with colorspace conversions.
this.whitePoint = 'D65';
this.stdObserver = '10';
this.chromaticAdaptationAlg = 'bradford';
this.RGBWorkingSpace = 's_rgb';
this.useApproxCIELabMapping = 1; // see http://www.brucelindbloom.com/LContinuity.html
this.chainMaps = {
'RGB_to_xyY' : ['XYZ'],
'xyY_to_RGB' : ['XYZ'],
'RGB_to_Lab' : ['XYZ'],
'Lab_to_RGB' : ['XYZ'],
'RGB_to_LCHab': ['XYZ', 'Lab'],
'LCHab_to_RGB': ['Lab'],
'xyY_to_Lab' : ['XYZ'],
'Lab_to_xyY' : ['XYZ'],
'XYZ_to_LCHab': ['Lab'],
'LCHab_to_XYZ': ['Lab'],
'xyY_to_LCHab': ['XYZ', 'Lab'],
'LCHab_to_xyY': ['Lab', 'XYZ'],
'RGB_to_Luv' : ['XYZ'],
'Luv_to_RGB' : ['XYZ'],
'xyY_to_Luv' : ['XYZ'],
'Luv_to_xyY' : ['XYZ'],
'Lab_to_Luv' : ['XYZ'],
'Luv_to_Lab' : ['XYZ'],
'LCHab_to_Luv': ['Lab', 'XYZ'],
'Luv_to_LCHab': ['XYZ', 'Lab'],
'RGB_to_LCHuv' : ['XYZ', 'Luv'],
'LCHuv_to_RGB' : ['Luv', 'XYZ'],
'XYZ_to_LCHuv' : ['Luv'],
'LCHuv_to_XYZ' : ['Luv'],
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