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/*Copyright (c) 2004-2006, The Dojo FoundationAll Rights Reserved.Licensed under the Academic Free License version 2.1 or above OR themodified 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");dojo.gfx.Colorspace = function () {this.whitePoint = "D65";this.stdObserver = "10";this.chromaticAdaptationAlg = "bradford";this.RGBWorkingSpace = "s_rgb";this.useApproxCIELabMapping = 1;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"], "xyY_to_LCHuv":["XYZ", "Luv"], "LCHuv_to_xyY":["Luv", "XYZ"], "Lab_to_LCHuv":["XYZ", "Luv"], "LCHuv_to_Lab":["Luv", "XYZ"], "LCHab_to_LCHuv":["Lab", "XYZ", "Luv"], "LCHuv_to_LCHab":["Luv", "XYZ", "Lab"], "XYZ_to_CMY":["RGB"], "CMY_to_XYZ":["RGB"], "xyY_to_CMY":["RGB"], "CMY_to_xyY":["RGB"], "Lab_to_CMY":["RGB"], "CMY_to_Lab":["RGB"], "LCHab_to_CMY":["RGB"], "CMY_to_LCHab":["RGB"], "Luv_to_CMY":["RGB"], "CMY_to_Luv":["RGB"], "LCHuv_to_CMY":["RGB"], "CMY_to_LCHuv":["RGB"], "XYZ_to_HSL":["RGB"], "HSL_to_XYZ":["RGB"], "xyY_to_HSL":["RGB"], "HSL_to_xyY":["RGB"], "Lab_to_HSL":["RGB"], "HSL_to_Lab":["RGB"], "LCHab_to_HSL":["RGB"], "HSL_to_LCHab":["RGB"], "Luv_to_HSL":["RGB"], "HSL_to_Luv":["RGB"], "LCHuv_to_HSL":["RGB"], "HSL_to_LCHuv":["RGB"], "CMY_to_HSL":["RGB"], "HSL_to_CMY":["RGB"], "CMYK_to_HSL":["RGB"], "HSL_to_CMYK":["RGB"], "XYZ_to_HSV":["RGB"], "HSV_to_XYZ":["RGB"], "xyY_to_HSV":["RGB"], "HSV_to_xyY":["RGB"], "Lab_to_HSV":["RGB"], "HSV_to_Lab":["RGB"], "LCHab_to_HSV":["RGB"], "HSV_to_LCHab":["RGB"], "Luv_to_HSV":["RGB"], "HSV_to_Luv":["RGB"], "LCHuv_to_HSV":["RGB"], "HSV_to_LCHuv":["RGB"], "CMY_to_HSV":["RGB"], "HSV_to_CMY":["RGB"], "CMYK_to_HSV":["RGB"], "HSV_to_CMYK":["RGB"], "HSL_to_HSV":["RGB"], "HSV_to_HSL":["RGB"], "XYZ_to_CMYK":["RGB"], "CMYK_to_XYZ":["RGB"], "xyY_to_CMYK":["RGB"], "CMYK_to_xyY":["RGB"], "Lab_to_CMYK":["RGB"], "CMYK_to_Lab":["RGB"], "LCHab_to_CMYK":["RGB"], "CMYK_to_LCHab":["RGB"], "Luv_to_CMYK":["RGB"], "CMYK_to_Luv":["RGB"], "LCHuv_to_CMYK":["RGB"], "CMYK_to_LCHuv":["RGB"]};return this;};dojo.gfx.Colorspace.prototype.convert = function (col, model_from, model_to) {var k = model_from + "_to_" + model_to;if (this[k]) {return this[k](col);} else {if (this.chainMaps[k]) {var cur = model_from;var models = this.chainMaps[k].concat();models.push(model_to);for (var i = 0; i < models.length; i++) {col = this.convert(col, cur, models[i]);cur = models[i];}return col;} else {dojo.debug("Can't convert from " + model_from + " to " + model_to);}}};dojo.gfx.Colorspace.prototype.munge = function (keys, args) {if (dojo.lang.isArray(args[0])) {args = args[0];}var out = new Array();for (var i = 0; i < keys.length; i++) {out[keys.charAt(i)] = args[i];}return out;};dojo.gfx.Colorspace.prototype.getWhitePoint = function () {var x = 0;var y = 0;var t = 0;switch (this.stdObserver) {case "2":switch (this.whitePoint) {case "E":x = 1 / 3;y = 1 / 3;t = 5400;break;case "D50":x = 0.34567;y = 0.3585;t = 5000;break;case "D55":x = 0.33242;y = 0.34743;t = 5500;break;case "D65":x = 0.31271;y = 0.32902;t = 6500;break;case "D75":x = 0.29902;y = 0.31485;t = 7500;break;case "A":x = 0.44757;y = 0.40745;t = 2856;break;case "B":x = 0.34842;y = 0.35161;t = 4874;break;case "C":x = 0.31006;y = 0.31616;t = 6774;break;case "9300":x = 0.2848;y = 0.2932;t = 9300;break;case "F2":x = 0.37207;y = 0.37512;t = 4200;break;case "F7":x = 0.31285;y = 0.32918;t = 6500;break;case "F11":x = 0.38054;y = 0.37691;t = 4000;break;default:dojo.debug("White point " + this.whitePoint + " isn't defined for Std. Observer " + this.strObserver);}break;case "10":switch (this.whitePoint) {case "E":x = 1 / 3;y = 1 / 3;t = 5400;break;case "D50":x = 0.34773;y = 0.35952;t = 5000;break;case "D55":x = 0.33411;y = 0.34877;t = 5500;break;case "D65":x = 0.31382;y = 0.331;t = 6500;break;case "D75":x = 0.29968;y = 0.3174;t = 7500;break;case "A":x = 0.45117;y = 0.40594;t = 2856;break;case "B":x = 0.3498;y = 0.3527;t = 4874;break;case "C":x = 0.31039;y = 0.31905;t = 6774;break;case "F2":x = 0.37928;y = 0.36723;t = 4200;break;case "F7":x = 0.31565;y = 0.32951;t = 6500;break;case "F11":x = 0.38543;y = 0.3711;t = 4000;break;default:dojo.debug("White point " + this.whitePoint + " isn't defined for Std. Observer " + this.strObserver);}break;default:dojo.debug("Std. Observer " + this.strObserver + " isn't defined");}var z = 1 - x - y;var wp = {"x":x, "y":y, "z":z, "t":t};wp.Y = 1;var XYZ = this.xyY_to_XYZ([wp.x, wp.y, wp.Y]);wp.X = XYZ[0];wp.Y = XYZ[1];wp.Z = XYZ[2];return wp;};dojo.gfx.Colorspace.prototype.getPrimaries = function () {var m = [];switch (this.RGBWorkingSpace) {case "adobe_rgb_1998":m = [2.2, "D65", 0.64, 0.33, 0.297361, 0.21, 0.71, 0.627355, 0.15, 0.06, 0.075285];break;case "apple_rgb":m = [1.8, "D65", 0.625, 0.34, 0.244634, 0.28, 0.595, 0.672034, 0.155, 0.07, 0.083332];break;case "best_rgb":m = [2.2, "D50", 0.7347, 0.2653, 0.228457, 0.215, 0.775, 0.737352, 0.13, 0.035, 0.034191];break;case "beta_rgb":m = [2.2, "D50", 0.6888, 0.3112, 0.303273, 0.1986, 0.7551, 0.663786, 0.1265, 0.0352, 0.032941];break;case "bruce_rgb":m = [2.2, "D65", 0.64, 0.33, 0.240995, 0.28, 0.65, 0.683554, 0.15, 0.06, 0.075452];break;case "cie_rgb":m = [2.2, "E", 0.735, 0.265, 0.176204, 0.274, 0.717, 0.812985, 0.167, 0.009, 0.010811];break;case "color_match_rgb":m = [1.8, "D50", 0.63, 0.34, 0.274884, 0.295, 0.605, 0.658132, 0.15, 0.075, 0.066985];break;case "don_rgb_4":m = [2.2, "D50", 0.696, 0.3, 0.27835, 0.215, 0.765, 0.68797, 0.13, 0.035, 0.03368];break;case "eci_rgb":m = [1.8, "D50", 0.67, 0.33, 0.32025, 0.21, 0.71, 0.602071, 0.14, 0.08, 0.077679];break;case "ekta_space_ps5":m = [2.2, "D50", 0.695, 0.305, 0.260629, 0.26, 0.7, 0.734946, 0.11, 0.005, 0.004425];break;case "ntsc_rgb":m = [2.2, "C", 0.67, 0.33, 0.298839, 0.21, 0.71, 0.586811, 0.14, 0.08, 0.11435];break;case "pal_secam_rgb":m = [2.2, "D65", 0.64, 0.33, 0.222021, 0.29, 0.6, 0.706645, 0.15, 0.06, 0.071334];break;case "pro_photo_rgb":m = [1.8, "D50", 0.7347, 0.2653, 0.28804, 0.1596, 0.8404, 0.711874, 0.0366, 0.0001, 0.000086];break;case "smpte-c_rgb":m = [2.2, "D65", 0.63, 0.34, 0.212395, 0.31, 0.595, 0.701049, 0.155, 0.07, 0.086556];break;case "s_rgb":m = [2.2, "D65", 0.64, 0.33, 0.212656, 0.3, 0.6, 0.715158, 0.15, 0.06, 0.072186];break;case "wide_gamut_rgb":m = [2.2, "D50", 0.735, 0.265, 0.258187, 0.115, 0.826, 0.724938, 0.157, 0.018, 0.016875];break;default:dojo.debug("RGB working space " + this.RGBWorkingSpace + " isn't defined");}var p = {name:this.RGBWorkingSpace, gamma:m[0], wp:m[1], xr:m[2], yr:m[3], Yr:m[4], xg:m[5], yg:m[6], Yg:m[7], xb:m[8], yb:m[9], Yb:m[10]};if (p.wp != this.whitePoint) {var r = this.XYZ_to_xyY(this.chromaticAdaptation(this.xyY_to_XYZ([p.xr, p.yr, p.Yr]), p.wp, this.whitePoint));var g = this.XYZ_to_xyY(this.chromaticAdaptation(this.xyY_to_XYZ([p.xg, p.yg, p.Yg]), p.wp, this.whitePoint));var b = this.XYZ_to_xyY(this.chromaticAdaptation(this.xyY_to_XYZ([p.xb, p.yb, p.Yb]), p.wp, this.whitePoint));p.xr = r[0];p.yr = r[1];p.Yr = r[2];p.xg = g[0];p.yg = g[1];p.Yg = g[2];p.xb = b[0];p.yb = b[1];p.Yb = b[2];p.wp = this.whitePoint;}p.zr = 1 - p.xr - p.yr;p.zg = 1 - p.xg - p.yg;p.zb = 1 - p.xb - p.yb;return p;};dojo.gfx.Colorspace.prototype.epsilon = function () {return this.useApproxCIELabMapping ? 0.008856 : 216 / 24289;};dojo.gfx.Colorspace.prototype.kappa = function () {return this.useApproxCIELabMapping ? 903.3 : 24389 / 27;};dojo.gfx.Colorspace.prototype.XYZ_to_xyY = function () {var src = this.munge("XYZ", arguments);var sum = src.X + src.Y + src.Z;if (sum == 0) {var wp = this.getWhitePoint();var x = wp.x;var y = wp.y;} else {var x = src.X / sum;var y = src.Y / sum;}var Y = src.Y;return [x, y, Y];};dojo.gfx.Colorspace.prototype.xyY_to_XYZ = function () {var src = this.munge("xyY", arguments);if (src.y == 0) {var X = 0;var Y = 0;var Z = 0;} else {var X = (src.x * src.Y) / src.y;var Y = src.Y;var Z = ((1 - src.x - src.y) * src.Y) / src.y;}return [X, Y, Z];};dojo.gfx.Colorspace.prototype.RGB_to_XYZ = function () {var src = this.munge("RGB", arguments);var m = this.getRGB_XYZ_Matrix();var pr = this.getPrimaries();if (this.RGBWorkingSpace == "s_rgb") {var r = (src.R > 0.04045) ? Math.pow(((src.R + 0.055) / 1.055), 2.4) : src.R / 12.92;var g = (src.G > 0.04045) ? Math.pow(((src.G + 0.055) / 1.055), 2.4) : src.G / 12.92;var b = (src.B > 0.04045) ? Math.pow(((src.B + 0.055) / 1.055), 2.4) : src.B / 12.92;} else {var r = Math.pow(src.R, pr.gamma);var g = Math.pow(src.G, pr.gamma);var b = Math.pow(src.B, pr.gamma);}var XYZ = dojo.math.matrix.multiply([[r, g, b]], m);return [XYZ[0][0], XYZ[0][1], XYZ[0][2]];};dojo.gfx.Colorspace.prototype.XYZ_to_RGB = function () {var src = this.munge("XYZ", arguments);var mi = this.getXYZ_RGB_Matrix();var pr = this.getPrimaries();var rgb = dojo.math.matrix.multiply([[src.X, src.Y, src.Z]], mi);var r = rgb[0][0];var g = rgb[0][1];var b = rgb[0][2];if (this.RGBWorkingSpace == "s_rgb") {var R = (r > 0.0031308) ? (1.055 * Math.pow(r, 1 / 2.4)) - 0.055 : 12.92 * r;var G = (g > 0.0031308) ? (1.055 * Math.pow(g, 1 / 2.4)) - 0.055 : 12.92 * g;var B = (b > 0.0031308) ? (1.055 * Math.pow(b, 1 / 2.4)) - 0.055 : 12.92 * b;} else {var R = Math.pow(r, 1 / pr.gamma);var G = Math.pow(g, 1 / pr.gamma);var B = Math.pow(b, 1 / pr.gamma);}return [R, G, B];};dojo.gfx.Colorspace.prototype.XYZ_to_Lab = function () {var src = this.munge("XYZ", arguments);var wp = this.getWhitePoint();var xr = src.X / wp.X;var yr = src.Y / wp.Y;var zr = src.Z / wp.Z;var fx = (xr > this.epsilon()) ? Math.pow(xr, 1 / 3) : (this.kappa() * xr + 16) / 116;var fy = (yr > this.epsilon()) ? Math.pow(yr, 1 / 3) : (this.kappa() * yr + 16) / 116;var fz = (zr > this.epsilon()) ? Math.pow(zr, 1 / 3) : (this.kappa() * zr + 16) / 116;var L = 116 * fy - 16;var a = 500 * (fx - fy);var b = 200 * (fy - fz);return [L, a, b];};dojo.gfx.Colorspace.prototype.Lab_to_XYZ = function () {var src = this.munge("Lab", arguments);var wp = this.getWhitePoint();var yr = (src.L > (this.kappa() * this.epsilon())) ? Math.pow((src.L + 16) / 116, 3) : src.L / this.kappa();var fy = (yr > this.epsilon()) ? (src.L + 16) / 116 : (this.kappa() * yr + 16) / 116;var fx = (src.a / 500) + fy;var fz = fy - (src.b / 200);var fxcube = Math.pow(fx, 3);var fzcube = Math.pow(fz, 3);var xr = (fxcube > this.epsilon()) ? fxcube : (116 * fx - 16) / this.kappa();var zr = (fzcube > this.epsilon()) ? fzcube : (116 * fz - 16) / this.kappa();var X = xr * wp.X;var Y = yr * wp.Y;var Z = zr * wp.Z;return [X, Y, Z];};dojo.gfx.Colorspace.prototype.Lab_to_LCHab = function () {var src = this.munge("Lab", arguments);var L = src.L;var C = Math.pow(src.a * src.a + src.b * src.b, 0.5);var H = Math.atan2(src.b, src.a) * (180 / Math.PI);if (H < 0) {H += 360;}if (H > 360) {H -= 360;}return [L, C, H];};dojo.gfx.Colorspace.prototype.LCHab_to_Lab = function () {var src = this.munge("LCH", arguments);var H_rad = src.H * (Math.PI / 180);var L = src.L;var a = src.C / Math.pow(Math.pow(Math.tan(H_rad), 2) + 1, 0.5);if ((90 < src.H) && (src.H < 270)) {a = -a;}var b = Math.pow(Math.pow(src.C, 2) - Math.pow(a, 2), 0.5);if (src.H > 180) {b = -b;}return [L, a, b];};dojo.gfx.Colorspace.prototype.chromaticAdaptation = function (col, src_w, dst_w) {col = this.munge("XYZ", [col]);var old_wp = this.whitePoint;this.whitePoint = src_w;var wp_src = this.getWhitePoint();this.whitePoint = dst_w;var wp_dst = this.getWhitePoint();this.whitePoint = old_wp;switch (this.chromaticAdaptationAlg) {case "xyz_scaling":var ma = [[1, 0, 0], [0, 1, 0], [0, 0, 1]];var mai = [[1, 0, 0], [0, 1, 0], [0, 0, 1]];break;case "bradford":var ma = [[0.8951, -0.7502, 0.0389], [0.2664, 1.7135, -0.0685], [-0.1614, 0.0367, 1.0296]];var mai = [[0.986993, 0.432305, -0.008529], [-0.147054, 0.51836, 0.040043], [0.159963, 0.049291, 0.968487]];break;case "von_kries":var ma = [[0.40024, -0.2263, 0], [0.7076, 1.16532, 0], [-0.08081, 0.0457, 0.91822]];var mai = [[1.859936, 0.361191, 0], [-1.129382, 0.638812, 0], [0.219897, -0.000006, 1.089064]];break;default:dojo.debug("The " + this.chromaticAdaptationAlg + " chromatic adaptation algorithm matricies are not defined");}var domain_src = dojo.math.matrix.multiply([[wp_src.x, wp_src.y, wp_src.z]], ma);var domain_dst = dojo.math.matrix.multiply([[wp_dst.x, wp_dst.y, wp_dst.z]], ma);var centre = [[domain_dst[0][0] / domain_src[0][0], 0, 0], [0, domain_dst[0][1] / domain_src[0][1], 0], [0, 0, domain_dst[0][2] / domain_src[0][2]]];var m = dojo.math.matrix.multiply(dojo.math.matrix.multiply(ma, centre), mai);var dst = dojo.math.matrix.multiply([[col.X, col.Y, col.Z]], m);return dst[0];};dojo.gfx.Colorspace.prototype.getRGB_XYZ_Matrix = function () {var wp = this.getWhitePoint();var pr = this.getPrimaries();var Xr = pr.xr / pr.yr;var Yr = 1;var Zr = (1 - pr.xr - pr.yr) / pr.yr;var Xg = pr.xg / pr.yg;var Yg = 1;var Zg = (1 - pr.xg - pr.yg) / pr.yg;var Xb = pr.xb / pr.yb;var Yb = 1;var Zb = (1 - pr.xb - pr.yb) / pr.yb;var m1 = [[Xr, Yr, Zr], [Xg, Yg, Zg], [Xb, Yb, Zb]];var m2 = [[wp.X, wp.Y, wp.Z]];var sm = dojo.math.matrix.multiply(m2, dojo.math.matrix.inverse(m1));var Sr = sm[0][0];var Sg = sm[0][1];var Sb = sm[0][2];var m4 = [[Sr * Xr, Sr * Yr, Sr * Zr], [Sg * Xg, Sg * Yg, Sg * Zg], [Sb * Xb, Sb * Yb, Sb * Zb]];return m4;};dojo.gfx.Colorspace.prototype.getXYZ_RGB_Matrix = function () {var m = this.getRGB_XYZ_Matrix();return dojo.math.matrix.inverse(m);};dojo.gfx.Colorspace.prototype.XYZ_to_Luv = function () {var src = this.munge("XYZ", arguments);var wp = this.getWhitePoint();var ud = (4 * src.X) / (src.X + 15 * src.Y + 3 * src.Z);var vd = (9 * src.Y) / (src.X + 15 * src.Y + 3 * src.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 = src.Y / wp.Y;var L = (yr > this.epsilon()) ? 116 * Math.pow(yr, 1 / 3) - 16 : this.kappa() * yr;var u = 13 * L * (ud - udr);var v = 13 * L * (vd - vdr);return [L, u, v];};dojo.gfx.Colorspace.prototype.Luv_to_XYZ = function () {var src = this.munge("Luv", arguments);var wp = this.getWhitePoint();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 = (src.L > this.kappa() * this.epsilon()) ? Math.pow((src.L + 16) / 116, 3) : src.L / this.kappa();var a = (1 / 3) * (((52 * src.L) / (src.u + 13 * src.L * uz)) - 1);var b = -5 * Y;var c = -(1 / 3);var d = Y * (((39 * src.L) / (src.v + 13 * src.L * vz)) - 5);var X = (d - b) / (a - c);var Z = X * a + b;return [X, Y, Z];};dojo.gfx.Colorspace.prototype.Luv_to_LCHuv = function () {var src = this.munge("Luv", arguments);var L = src.L;var C = Math.pow(src.u * src.u + src.v * src.v, 0.5);var H = Math.atan2(src.v, src.u) * (180 / Math.PI);if (H < 0) {H += 360;}if (H > 360) {H -= 360;}return [L, C, H];};dojo.gfx.Colorspace.prototype.LCHuv_to_Luv = function () {var src = this.munge("LCH", arguments);var H_rad = src.H * (Math.PI / 180);var L = src.L;var u = src.C / Math.pow(Math.pow(Math.tan(H_rad), 2) + 1, 0.5);var v = Math.pow(src.C * src.C - u * u, 0.5);if ((90 < src.H) && (src.H < 270)) {u *= -1;}if (src.H > 180) {v *= -1;}return [L, u, v];};dojo.gfx.Colorspace.colorTemp_to_whitePoint = function (T) {if (T < 4000) {dojo.debug("Can't find a white point for temperatures under 4000K");return [0, 0];}if (T > 25000) {dojo.debug("Can't find a white point for temperatures over 25000K");return [0, 0];}var T1 = T;var T2 = T * T;var T3 = T2 * T;var ten9 = Math.pow(10, 9);var ten6 = Math.pow(10, 6);var ten3 = Math.pow(10, 3);if (T <= 7000) {var x = (-4.607 * ten9 / T3) + (2.9678 * ten6 / T2) + (0.09911 * ten3 / T) + 0.244063;} else {var x = (-2.0064 * ten9 / T3) + (1.9018 * ten6 / T2) + (0.24748 * ten3 / T) + 0.23704;}var y = -3 * x * x + 2.87 * x - 0.275;return [x, y];};dojo.gfx.Colorspace.prototype.RGB_to_CMY = function () {var src = this.munge("RGB", arguments);var C = 1 - src.R;var M = 1 - src.G;var Y = 1 - src.B;return [C, M, Y];};dojo.gfx.Colorspace.prototype.CMY_to_RGB = function () {var src = this.munge("CMY", arguments);var R = 1 - src.C;var G = 1 - src.M;var B = 1 - src.Y;return [R, G, B];};dojo.gfx.Colorspace.prototype.RGB_to_CMYK = function () {var src = this.munge("RGB", arguments);var K = Math.min(1 - src.R, 1 - src.G, 1 - src.B);var C = (1 - src.R - K) / (1 - K);var M = (1 - src.G - K) / (1 - K);var Y = (1 - src.B - K) / (1 - K);return [C, M, Y, K];};dojo.gfx.Colorspace.prototype.CMYK_to_RGB = function () {var src = this.munge("CMYK", arguments);var R = 1 - Math.min(1, src.C * (1 - src.K) + src.K);var G = 1 - Math.min(1, src.M * (1 - src.K) + src.K);var B = 1 - Math.min(1, src.Y * (1 - src.K) + src.K);return [R, G, B];};dojo.gfx.Colorspace.prototype.CMY_to_CMYK = function () {var src = this.munge("CMY", arguments);var K = Math.min(src.C, src.M, src.Y);var C = (src.C - K) / (1 - K);var M = (src.M - K) / (1 - K);var Y = (src.Y - K) / (1 - K);return [C, M, Y, K];};dojo.gfx.Colorspace.prototype.CMYK_to_CMY = function () {var src = this.munge("CMYK", arguments);var C = Math.min(1, src.C * (1 - src.K) + src.K);var M = Math.min(1, src.M * (1 - src.K) + src.K);var Y = Math.min(1, src.Y * (1 - src.K) + src.K);return [C, M, Y];};dojo.gfx.Colorspace.prototype.RGB_to_HSV = function () {var src = this.munge("RGB", arguments);var min = Math.min(src.R, src.G, src.B);var V = Math.max(src.R, src.G, src.B);var delta = V - min;var H = null;var S = (V == 0) ? 0 : delta / V;if (S == 0) {H = 0;} else {if (src.R == V) {H = 60 * (src.G - src.B) / delta;} else {if (src.G == V) {H = 120 + 60 * (src.B - src.R) / delta;} else {if (src.B == V) {H = 240 + 60 * (src.R - src.G) / delta;}}}if (H < 0) {H += 360;}}H = (H == 0) ? 360 : H;return [H, S, V];};dojo.gfx.Colorspace.prototype.HSV_to_RGB = function () {var src = this.munge("HSV", arguments);if (src.H == 360) {src.H = 0;}var r = null;var g = null;var b = null;if (src.S == 0) {var R = src.V;var G = src.V;var B = src.V;} else {var hTemp = src.H / 60;var i = Math.floor(hTemp);var f = hTemp - i;var p = src.V * (1 - src.S);var q = src.V * (1 - (src.S * f));var t = src.V * (1 - (src.S * (1 - f)));switch (i) {case 0:R = src.V;G = t;B = p;break;case 1:R = q;G = src.V;B = p;break;case 2:R = p;G = src.V;B = t;break;case 3:R = p;G = q;B = src.V;break;case 4:R = t;G = p;B = src.V;break;case 5:R = src.V;G = p;B = q;break;}}return [R, G, B];};dojo.gfx.Colorspace.prototype.RGB_to_HSL = function () {var src = this.munge("RGB", arguments);var min = Math.min(src.R, src.G, src.B);var max = Math.max(src.R, src.G, src.B);var delta = max - min;var H = 0;var S = 0;var L = (min + max) / 2;if ((L > 0) && (L < 1)) {S = delta / ((L < 0.5) ? (2 * L) : (2 - 2 * L));}if (delta > 0) {if ((max == src.R) && (max != src.G)) {H += (src.G - src.B) / delta;}if ((max == src.G) && (max != src.B)) {H += (2 + (src.B - src.R) / delta);}if ((max == src.B) && (max != src.R)) {H += (4 + (src.R - src.G) / delta);}H *= 60;}H = (H == 0) ? 360 : H;return [H, S, L];};dojo.gfx.Colorspace.prototype.HSL_to_RGB = function () {var src = this.munge("HSL", arguments);while (src.H < 0) {src.H += 360;}while (src.H >= 360) {src.H -= 360;}var R = 0;var G = 0;var B = 0;if (src.H < 120) {R = (120 - src.H) / 60;G = src.H / 60;B = 0;} else {if (src.H < 240) {R = 0;G = (240 - src.H) / 60;B = (src.H - 120) / 60;} else {R = (src.H - 240) / 60;G = 0;B = (360 - src.H) / 60;}}R = 2 * src.S * Math.min(R, 1) + (1 - src.S);G = 2 * src.S * Math.min(G, 1) + (1 - src.S);B = 2 * src.S * Math.min(B, 1) + (1 - src.S);if (src.L < 0.5) {R = src.L * R;G = src.L * G;B = src.L * B;} else {R = (1 - src.L) * R + 2 * src.L - 1;G = (1 - src.L) * G + 2 * src.L - 1;B = (1 - src.L) * B + 2 * src.L - 1;}return [R, G, B];};