colorspace.js

这是一个ajax的例子大家好好的看看就是一个鱼眼的效果

if(!dojo._hasResource["dojox.color.Colorspace"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.color.Colorspace"] = true;
dojo.provide("dojox.color.Colorspace");
dojo.require("dojox.math.matrix");

dojox.color.Colorspace=new (function(){
	var dxc=dojox.color;
	var dxm=dojox.math.matrix;
	var self=this;
	var wpMap={
		"2":{
			"E":	{ x:1/3,     y:1/3,     t:5400 },
			"D50":	{ x:0.34567, y:0.3585,  t:5000 },
			"D55":	{ x:0.33242, y:0.34743, t:5500 },
			"D65":	{ x:0.31271, y:0.32902, t:6500 },
			"D75":	{ x:0.29902, y:0.31485, t:7500 },
			"A":	{ x:0.44757, y:0.40745, t:2856 },
			"B":	{ x:0.34842, y:0.35161, t:4874 },
			"C":	{ x:0.31006, y:0.31616, t:6774 },
			"9300":	{ x:0.2848,  y:0.2932,  t:9300 },
			"F2":	{ x:0.37207, y:0.37512, t:4200 },
			"F7":	{ x:0.31285, y:0.32918, t:6500 },
			"F11":	{ x:0.38054, y:0.37691, t:4000 }
		},
		"10":{
			"E":	{ x:1/3,     y:1/3,     t:5400 },
			"D50":	{ x:0.34773, y:0.35952, t:5000 },
			"D55":	{ x:0.33411, y:0.34877, t:5500 },
			"D65":	{ x:0.31382, y:0.331,   t:6500 },
			"D75":	{ x:0.29968, y:0.3174,  t:7500 },
			"A":	{ x:0.45117, y:0.40594, t:2856 },
			"B":	{ x:0.3498,  y:0.3527,  t:4874 },
			"C":	{ x:0.31039, y:0.31905, t:6774 },
			"F2":	{ x:0.37928, y:0.36723, t:4200 },
			"F7":	{ x:0.31565, y:0.32951, t:6500 },
			"F11":	{ x:0.38543, y:0.3711,  t:4000 }
		}
	};

	var profiles={
		"Adobe RGB 98":[2.2, "D65", 0.64, 0.33, 0.297361, 0.21, 0.71, 0.627355, 0.15, 0.06, 0.075285],
		"Apple RGB":[1.8, "D65", 0.625, 0.34, 0.244634, 0.28, 0.595, 0.672034, 0.155, 0.07, 0.083332],
		"Best RGB":[2.2, "D50", 0.7347, 0.2653, 0.228457, 0.215, 0.775, 0.737352, 0.13, 0.035, 0.034191],
		"Beta RGB":[2.2, "D50", 0.6888, 0.3112, 0.303273, 0.1986, 0.7551, 0.663786, 0.1265, 0.0352, 0.032941],
		"Bruce RGB":[2.2, "D65", 0.64, 0.33, 0.240995, 0.28, 0.65, 0.683554, 0.15, 0.06, 0.075452],
		"CIE RGB":[2.2, "E", 0.735, 0.265, 0.176204, 0.274, 0.717, 0.812985, 0.167, 0.009, 0.010811],
		"ColorMatch RGB":[1.8, "D50", 0.63, 0.34, 0.274884, 0.295, 0.605, 0.658132, 0.15, 0.075, 0.066985],
		"DON RGB 4":[2.2, "D50", 0.696, 0.3, 0.27835, 0.215, 0.765, 0.68797, 0.13, 0.035, 0.03368],
		"ECI RGB":[1.8, "D50", 0.67, 0.33, 0.32025, 0.21, 0.71, 0.602071, 0.14, 0.08, 0.077679],
		"EktaSpace PS5":[2.2, "D50", 0.695, 0.305, 0.260629, 0.26, 0.7, 0.734946, 0.11, 0.005, 0.004425],
		"NTSC RGB":[2.2, "C", 0.67, 0.33, 0.298839, 0.21, 0.71, 0.586811, 0.14, 0.08, 0.11435],
		"PAL/SECAM RGB":[2.2, "D65", 0.64, 0.33, 0.222021, 0.29, 0.6, 0.706645, 0.15, 0.06, 0.071334],
		"Pro Photo RGB":[1.8, "D50", 0.7347, 0.2653, 0.28804, 0.1596, 0.8404, 0.711874, 0.0366, 0.0001, 0.000086],
		"SMPTE/C RGB":[2.2, "D65", 0.63, 0.34, 0.212395, 0.31, 0.595, 0.701049, 0.155, 0.07, 0.086556],
		"sRGB":[2.2, "D65", 0.64, 0.33, 0.212656, 0.3, 0.6, 0.715158, 0.15, 0.06, 0.072186],
		"Wide Gamut RGB":[2.2, "D50", 0.735, 0.265, 0.258187, 0.115, 0.826, 0.724938, 0.157, 0.018, 0.016875]
	};

	var adaptors={
		"XYZ scaling":{
			ma:  [[1,0,0], [0,1,0], [0,0,1]],
			mai: [[1,0,0], [0,1,0], [0,0,1]]
		},
		"Bradford":{
			ma:  [[0.8951, -0.7502, 0.0389], [0.2664, 1.7135, -0.0685], [-0.1614, 0.0367, 1.0296]],
			mai: [[0.986993, 0.432305, -0.008529], [-0.147054, 0.51836, 0.040043], [0.159963, 0.049291, 0.968487]]
		},
		"Von Kries":{
			ma:  [[0.40024, -0.2263, 0], [0.7076, 1.16532, 0], [-0.08081, 0.0457, 0.91822]],
			mai: [[1.859936, 0.361191, 0], [-1.129382, 0.638812, 0], [0.219897, -0.000006, 1.089064]]
		}
	};

	var cMaps={
		"XYZ":{
			"xyY":function(xyz, kwArgs){
				kwArgs=dojo.mixin({
					whitepoint:"D65",
					observer:"10",
					useApproximation:true
				}, kwArgs||{});
				var wp=self.whitepoint(kwArgs.whitepoint, kwArgs.observer);
				var sum=xyz.X+xyz.Y+xyz.Z;
				if(sum==0){ var x=wp.x, y=wp.y; }
				else{ var x=xyz.X/sum, y=xyz.Y/sum; }
				return { x:x, y:y, Y:xyz.Y };
			},
			"Lab":function(xyz, kwArgs){
				kwArgs=dojo.mixin({
					whitepoint:"D65",
					observer:"10",
					useApproximation:true
				}, kwArgs||{});

				var kappa=self.kappa(kwArgs.useApproximation), epsilon=self.epsilon(kwArgs.useApproximation);
				var wp=self.whitepoint(kwArgs.whitepoint, kwArgs.observer);
				var xr=xyz.X/wp.x, yr=xyz.Y/wp.y, zr=xyz.z/wp.z;
				var fx=(xr>epsilon)?Math.pow(xr,1/3):(kappa*xr+16)/116;
				var fy=(yr>epsilon)?Math.pow(yr,1/3):(kappa*yr+16)/116;
				var fz=(zr>epsilon)?Math.pow(zr,1/3):(kappa*zr+16)/116;
				var L=116*fy-16, a=500*(fx-fy), b=200*(fy-fz);
				return { L:L, a:a, b:b };
			},
			"Luv": function(xyz, kwArgs){
				kwArgs=dojo.mixin({
					whitepoint:"D65",
					observer:"10",
					useApproximation:true
				}, kwArgs||{});

				var kappa=self.kappa(kwArgs.useApproximation), epsilon=self.epsilon(kwArgs.useApproximation);
				var wp=self.whitepoint(kwArgs.whitepoint, kwArgs.observer);
				var ud=(4*xyz.X)/(xyz.X+15*xyz.Y+3*xyz.Z);
				var vd=(9*xyz.Y)/(xyz.X+15*xyz.Y+3*xyz.Z);
				var udr=(4*wp.x)/(wp.x+15*wp.y+3*wp.z);
				var vdr=(9*wp.y)/(wp.x+15*wp.y+3*wp.z);
				var yr=xyz.Y/wp.y;
				var L=(yr>epsilon)?116*Math.pow(yr, 1/3)-16:kappa*yr;
				var u=13*L*(ud-udr);
				var v=13*L*(vd-vdr);
				return { L:L, u:u, v:v };
			}
		},
		"xyY":{
			"XYZ":function(xyY){
				if(xyY.y==0){ var X=0, Y=0, Z=0; }
				else{
					var X=(xyY.x*xyY.Y)/xyY.y;
					var Y=xyY.Y;
					var Z=((1-xyY.x-xyY.y)*xyY.Y)/xyY.y;
				}
				return { X:X, Y:Y, Z:Z };
			}
		},
		"Lab":{
			"XYZ": function(lab, kwArgs){
				kwArgs=dojo.mixin({
					whitepoint:"D65",
					observer:"10",
					useApproximation:true
				}, kwArgs||{});

				var b=kwArgs.useApproximation, kappa=self.kappa(b), epsilon=self.epsilon(b);
				var wp=self.whitepoint(kwArgs.whitepoint, kwArgs.observer);
				var yr=(lab.L>(kappa*epsilon))?Math.pow((lab.L+16)/116, 3):lab.L/kappa;
				var fy=(yr>epsilon)?(lab.L+16)/116:(kappa*yr+16)/116;
				var fx=(lab.a/500)+fy;
				var fz=fy-(lab.b/200);
				var fxcube=Math.pow(fx, 3), fzcube=Math.pow(fz, 3);
				var xr=(fxcube>epsilon)?fxcube:(116*fx-16)/kappa;
				var zr=(fzcube>epsilon)?fzcube:(116*fz-16)/kappa;
				return { X: xr*wp.x, Y: yr*wp.y, Z: zr*wp.z };
			},
			"LCHab": function(lab){
				var L=lab.L, C=Math.pow(lab.a*lab.a+lab.b*lab.b, 0.5), H=Math.atan(lab.b, lab.a)*(180/Math.PI);
				if(H<0){ H+=360; }
				if(H<360){ H-=360; }
				return { L:L, C:C, H:H };
			}
		},
		"LCHab":{
			"Lab":function(lch){
				var hRad=lch.H*(Math.PI/180), L=lch.L, a=lch.C/Math.pow(Math.pow(Math.tan(hRad),2)+1, 0.5);
				if(90<lchH && lch.H<270){ a = -a; }
				var b=Math.pow(Math.pow(lch.C,2)-Math.pow(a, 2), 0.5);
				if(lch.H>180){ b = -b; }
				return { L: L, a:a, b:b };
			}
		},
		"Luv":{
			"XYZ": function(Luv, kwArgs){
				kwArgs=dojo.mixin({
					whitepoint:"D65",
					observer:"10",
					useApproximation:true
				}, kwArgs||{});

				var b=kwArgs.useApproximation, kappa=self.kappa(b), epsilon=self.epsilon(b);
				var wp=self.whitepoint(kwArgs.whitepoint, kwArgs.observer);
				var uz=(4*wp.x)/(wp.x+15*wp.y+3*wp.z);
				var vz=(9*wp.y)/(wp.x+15*wp.y+3*wp.z);
				var Y=(Luv.L>kappa*epsilon)?Math.pow((Luv.L+16)/116, 3):Luv.L/kappa;
				var a=(1/3)*(((52*Luv.L)/(Luv.u+13*Luv.L*uz))-1);
				var b=-5*Y, c=-(1/3), d=Y*(((39*Luv.L)/(Luv.v+13*Luv.L*vz))-5);
				var X=(d-b)/(a-c), Z=X*a+b;
				return { X:X, Y:Y, Z:Z };
			},
			"LCHuv": function(Luv){
				var L=Luv.L, C=Math.pow(Luv.u*Luv.u+Luv.v*Luv*v, 0.5), H=Math.atan(Luv.v, Luv.u)*(180/Math.PI);
				if(H<0){ H+=360; }
				if(H>360){ H-=360; }
				return { L:L, C:C, H:H };
			}
		},
		"LCHuv":{
			"Luv": function(LCH){
				var hRad=LCH.H*(Math.PI/180);
				var L=LCH.L, u=LCH.C/Math.pow(Math.pow(Math.tan(hRad),2)+1, 0.5);
				var v=Math.pow(LCH.C*LCH.C-u*u, 0.5);
				if(90<LCH.H && LCH.H>270){ u*=-1; }
				if(LCH.H>180){ v*=-1; }
				return { L:L, u:u, v:v };
			}
		}
	};
	var converters={
		"CMY":{ 
			"CMYK":function(obj, kwArgs){ return dxc.fromCmy(obj).toCmyk(); },
			"HSL":function(obj, kwArgs){ return dxc.fromCmy(obj).toHsl(); },
			"HSV":function(obj, kwArgs){ return dxc.fromCmy(obj).toHsv(); },
			"Lab":function(obj, kwArgs){ return cMaps["XYZ"]["Lab"](dxc.fromCmy(obj).toXYZ(kwArgs)); },
			"LCHab":function(obj, kwArgs){ return cMaps["Lab"]["LCHab"](converters["CMY"]["Lab"](obj)); },
			"LCHuv":function(obj, kwArgs){ return cMaps["LCHuv"]["Luv"](cMaps["Luv"]["XYZ"](dxc.fromCmy(obj).toXYZ(kwArgs))); },
			"Luv":function(obj, kwArgs){ return cMaps["Luv"]["XYZ"](dxc.fromCmy(obj).toXYZ(kwArgs)); },
			"RGB":function(obj, kwArgs){ return dxc.fromCmy(obj); },
			"XYZ":function(obj, kwArgs){ return dxc.fromCmy(obj).toXYZ(kwArgs); },
			"xyY":function(obj, kwArgs){ return cMaps["XYZ"]["xyY"](dxc.fromCmy(obj).toXYZ(kwArgs)); }
		},
		"CMYK":{ 
			"CMY":function(obj, kwArgs){ return dxc.fromCmyk(obj).toCmy(); },
			"HSL":function(obj, kwArgs){ return dxc.fromCmyk(obj).toHsl(); },
			"HSV":function(obj, kwArgs){ return dxc.fromCmyk(obj).toHsv(); },
			"Lab":function(obj, kwArgs){ return cMaps["XYZ"]["Lab"](dxc.fromCmyk(obj).toXYZ(kwArgs)); },
			"LCHab":function(obj, kwArgs){ return cMaps["Lab"]["LCHab"](converters["CMYK"]["Lab"](obj)); },
			"LCHuv":function(obj, kwArgs){ return cMaps["LCHuv"]["Luv"](cMaps["Luv"]["XYZ"](dxc.fromCmyk(obj).toXYZ(kwArgs))); },
			"Luv":function(obj, kwArgs){ return cMaps["Luv"]["XYZ"](dxc.fromCmyk(obj).toXYZ(kwArgs)); },
			"RGB":function(obj, kwArgs){ return dxc.fromCmyk(obj); },
			"XYZ":function(obj, kwArgs){ return dxc.fromCmyk(obj).toXYZ(kwArgs); },
			"xyY":function(obj, kwArgs){ return cMaps["XYZ"]["xyY"](dxc.fromCmyk(obj).toXYZ(kwArgs)); }
		},
		"HSL":{ 
			"CMY":function(obj, kwArgs){ return dxc.fromHsl(obj).toCmy(); },
			"CMYK":function(obj, kwArgs){ return dxc.fromHsl(obj).toCmyk(); },
			"HSV":function(obj, kwArgs){ return dxc.fromHsl(obj).toHsv(); },
			"Lab":function(obj, kwArgs){ return cMaps["XYZ"]["Lab"](dxc.fromHsl(obj).toXYZ(kwArgs)); },
			"LCHab":function(obj, kwArgs){ return cMaps["Lab"]["LCHab"](converters["CMYK"]["Lab"](obj)); },
			"LCHuv":function(obj, kwArgs){ return cMaps["LCHuv"]["Luv"](cMaps["Luv"]["XYZ"](dxc.fromHsl(obj).toXYZ(kwArgs))); },
			"Luv":function(obj, kwArgs){ return cMaps["Luv"]["XYZ"](dxc.fromHsl(obj).toXYZ(kwArgs)); },
			"RGB":function(obj, kwArgs){ return dxc.fromHsl(obj); },
			"XYZ":function(obj, kwArgs){ return dxc.fromHsl(obj).toXYZ(kwArgs); },
			"xyY":function(obj, kwArgs){ return cMaps["XYZ"]["xyY"](dxc.fromHsl(obj).toXYZ(kwArgs)); }
		},
		"HSV":{ 
			"CMY":function(obj, kwArgs){ return dxc.fromHsv(obj).toCmy(); },
			"CMYK":function(obj, kwArgs){ return dxc.fromHsv(obj).toCmyk(); },
			"HSL":function(obj, kwArgs){ return dxc.fromHsv(obj).toHsl(); },
			"Lab":function(obj, kwArgs){ return cMaps["XYZ"]["Lab"](dxc.fromHsv(obj).toXYZ(kwArgs)); },
			"LCHab":function(obj, kwArgs){ return cMaps["Lab"]["LCHab"](converters["CMYK"]["Lab"](obj)); },
			"LCHuv":function(obj, kwArgs){ return cMaps["LCHuv"]["Luv"](cMaps["Luv"]["XYZ"](dxc.fromHsv(obj).toXYZ(kwArgs))); },
			"Luv":function(obj, kwArgs){ return cMaps["Luv"]["XYZ"](dxc.fromHsv(obj).toXYZ(kwArgs)); },
			"RGB":function(obj, kwArgs){ return dxc.fromHsv(obj); },
			"XYZ":function(obj, kwArgs){ return dxc.fromHsv(obj).toXYZ(kwArgs); },
			"xyY":function(obj, kwArgs){ return cMaps["XYZ"]["xyY"](dxc.fromHsv(obj).toXYZ(kwArgs)); }
		},
		"Lab":{ 
			"CMY":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](obj, kwArgs)).toCmy(); },
			"CMYK":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](obj, kwArgs)).toCmyk(); },
			"HSL":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](obj, kwArgs)).toHsl(); },
			"HSV":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](obj, kwArgs)).toHsv(); },
			"LCHab":function(obj, kwArgs){ return cMaps["Lab"]["LCHab"](obj, kwArgs); },
			"LCHuv":function(obj, kwArgs){ return cMaps["Luv"]["LCHuv"](cMaps["Lab"]["XYZ"](obj, kwArgs), kwArgs); },
			"Luv":function(obj, kwArgs){ return cMaps["XYZ"]["Luv"](cMaps["Lab"]["XYZ"](obj, kwArgs), kwArgs); },
			"RGB":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](obj, kwArgs)); },
			"XYZ":function(obj, kwArgs){ return cMaps["Lab"]["XYZ"](obj, kwArgs); },
			"xyY":function(obj, kwArgs){ return cMaps["XYZ"]["xyY"](cMaps["Lab"]["XYZ"](obj, kwArgs), kwArgs); }
		},
		"LCHab":{ 
			"CMY":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs).toCmy(); },
			"CMYK":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs).toCmyk(); },
			"HSL":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs).toHsl(); },
			"HSV":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs).toHsv(); },
			"Lab":function(obj, kwArgs){ return cMaps["Lab"]["LCHab"](obj, kwArgs); },
			"LCHuv":function(obj, kwArgs){ return cMaps["Luv"]["LCHuv"](cMaps["XYZ"]["Luv"](cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs), kwArgs);},
			"Luv":function(obj, kwArgs){ return cMaps["XYZ"]["Luv"](cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs);},
			"RGB":function(obj, kwArgs){ return dxc.fromXYZ(cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs); },
			"XYZ":function(obj, kwArgs){ return cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj, kwArgs), kwArgs); },
			"xyY":function(obj, kwArgs){ return cMaps["XYZ"]["xyY"](cMaps["Lab"]["XYZ"](cMaps["LCHab"]["Lab"](obj), kwArgs), kwArgs); }
		},
		"LCHuv":{