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| /** | |
| * @namespace Color operations | |
| */ | |
| ROT.Color = { | |
| fromString: function(str) { | |
| var cached, r; | |
| if (str in this._cache) { | |
| cached = this._cache[str]; | |
| } else { | |
| if (str.charAt(0) == "#") { /* hex rgb */ | |
| var values = str.match(/[0-9a-f]/gi).map(function(x) { return parseInt(x, 16); }); | |
| if (values.length == 3) { | |
| cached = values.map(function(x) { return x*17; }); | |
| } else { | |
| for (var i=0;i<3;i++) { | |
| values[i+1] += 16*values[i]; | |
| values.splice(i, 1); | |
| } | |
| cached = values; | |
| } | |
| } else if (r = str.match(/rgb\(([0-9, ]+)\)/i)) { /* decimal rgb */ | |
| cached = r[1].split(/\s*,\s*/).map(function(x) { return parseInt(x); }); | |
| } else { /* html name */ | |
| cached = [0, 0, 0]; | |
| } | |
| this._cache[str] = cached; | |
| } | |
| return cached.slice(); | |
| }, | |
| /** | |
| * Add two or more colors | |
| * @param {number[]} color1 | |
| * @param {number[]} color2 | |
| * @returns {number[]} | |
| */ | |
| add: function(color1, color2) { | |
| var result = color1.slice(); | |
| for (var i=0;i<3;i++) { | |
| for (var j=1;j<arguments.length;j++) { | |
| result[i] += arguments[j][i]; | |
| } | |
| } | |
| return result; | |
| }, | |
| /** | |
| * Add two or more colors, MODIFIES FIRST ARGUMENT | |
| * @param {number[]} color1 | |
| * @param {number[]} color2 | |
| * @returns {number[]} | |
| */ | |
| add_: function(color1, color2) { | |
| for (var i=0;i<3;i++) { | |
| for (var j=1;j<arguments.length;j++) { | |
| color1[i] += arguments[j][i]; | |
| } | |
| } | |
| return color1; | |
| }, | |
| /** | |
| * Multiply (mix) two or more colors | |
| * @param {number[]} color1 | |
| * @param {number[]} color2 | |
| * @returns {number[]} | |
| */ | |
| multiply: function(color1, color2) { | |
| var result = color1.slice(); | |
| for (var i=0;i<3;i++) { | |
| for (var j=1;j<arguments.length;j++) { | |
| result[i] *= arguments[j][i] / 255; | |
| } | |
| result[i] = Math.round(result[i]); | |
| } | |
| return result; | |
| }, | |
| /** | |
| * Multiply (mix) two or more colors, MODIFIES FIRST ARGUMENT | |
| * @param {number[]} color1 | |
| * @param {number[]} color2 | |
| * @returns {number[]} | |
| */ | |
| multiply_: function(color1, color2) { | |
| for (var i=0;i<3;i++) { | |
| for (var j=1;j<arguments.length;j++) { | |
| color1[i] *= arguments[j][i] / 255; | |
| } | |
| color1[i] = Math.round(color1[i]); | |
| } | |
| return color1; | |
| }, | |
| /** | |
| * Interpolate (blend) two colors with a given factor | |
| * @param {number[]} color1 | |
| * @param {number[]} color2 | |
| * @param {float} [factor=0.5] 0..1 | |
| * @returns {number[]} | |
| */ | |
| interpolate: function(color1, color2, factor) { | |
| if (arguments.length < 3) { factor = 0.5; } | |
| var result = color1.slice(); | |
| for (var i=0;i<3;i++) { | |
| result[i] = Math.round(result[i] + factor*(color2[i]-color1[i])); | |
| } | |
| return result; | |
| }, | |
| /** | |
| * Interpolate (blend) two colors with a given factor in HSL mode | |
| * @param {number[]} color1 | |
| * @param {number[]} color2 | |
| * @param {float} [factor=0.5] 0..1 | |
| * @returns {number[]} | |
| */ | |
| interpolateHSL: function(color1, color2, factor) { | |
| if (arguments.length < 3) { factor = 0.5; } | |
| var hsl1 = this.rgb2hsl(color1); | |
| var hsl2 = this.rgb2hsl(color2); | |
| for (var i=0;i<3;i++) { | |
| hsl1[i] += factor*(hsl2[i]-hsl1[i]); | |
| } | |
| return this.hsl2rgb(hsl1); | |
| }, | |
| /** | |
| * Create a new random color based on this one | |
| * @param {number[]} color | |
| * @param {number[]} diff Set of standard deviations | |
| * @returns {number[]} | |
| */ | |
| randomize: function(color, diff) { | |
| if (!(diff instanceof Array)) { diff = ROT.RNG.getNormal(0, diff); } | |
| var result = color.slice(); | |
| for (var i=0;i<3;i++) { | |
| result[i] += (diff instanceof Array ? Math.round(ROT.RNG.getNormal(0, diff[i])) : diff); | |
| } | |
| return result; | |
| }, | |
| /** | |
| * Converts an RGB color value to HSL. Expects 0..255 inputs, produces 0..1 outputs. | |
| * @param {number[]} color | |
| * @returns {number[]} | |
| */ | |
| rgb2hsl: function(color) { | |
| var r = color[0]/255; | |
| var g = color[1]/255; | |
| var b = color[2]/255; | |
| var max = Math.max(r, g, b), min = Math.min(r, g, b); | |
| var h, s, l = (max + min) / 2; | |
| if (max == min) { | |
| h = s = 0; // achromatic | |
| } else { | |
| var d = max - min; | |
| s = (l > 0.5 ? d / (2 - max - min) : d / (max + min)); | |
| switch(max) { | |
| case r: h = (g - b) / d + (g < b ? 6 : 0); break; | |
| case g: h = (b - r) / d + 2; break; | |
| case b: h = (r - g) / d + 4; break; | |
| } | |
| h /= 6; | |
| } | |
| return [h, s, l]; | |
| }, | |
| /** | |
| * Converts an HSL color value to RGB. Expects 0..1 inputs, produces 0..255 outputs. | |
| * @param {number[]} color | |
| * @returns {number[]} | |
| */ | |
| hsl2rgb: function(color) { | |
| var l = color[2]; | |
| if (color[1] == 0) { | |
| l *= 255; | |
| return [l, l, l]; | |
| } else { | |
| function hue2rgb(p, q, t) { | |
| if (t < 0) t += 1; | |
| if (t > 1) t -= 1; | |
| if (t < 1/6) return p + (q - p) * 6 * t; | |
| if (t < 1/2) return q; | |
| if (t < 2/3) return p + (q - p) * (2/3 - t) * 6; | |
| return p; | |
| } | |
| var s = color[1]; | |
| var q = (l < 0.5 ? l * (1 + s) : l + s - l * s); | |
| var p = 2 * l - q; | |
| var r = hue2rgb(p, q, color[0] + 1/3); | |
| var g = hue2rgb(p, q, color[0]); | |
| var b = hue2rgb(p, q, color[0] - 1/3); | |
| return [Math.round(r*255), Math.round(g*255), Math.round(b*255)]; | |
| } | |
| }, | |
| toRGB: function(color) { | |
| return "rgb(" + this._clamp(color[0]) + "," + this._clamp(color[1]) + "," + this._clamp(color[2]) + ")"; | |
| }, | |
| toHex: function(color) { | |
| var parts = []; | |
| for (var i=0;i<3;i++) { | |
| parts.push(this._clamp(color[i]).toString(16).lpad("0", 2)); | |
| } | |
| return "#" + parts.join(""); | |
| }, | |
| _clamp: function(num) { | |
| if (num < 0) { | |
| return 0; | |
| } else if (num > 255) { | |
| return 255; | |
| } else { | |
| return num; | |
| } | |
| }, | |
| _cache: { | |
| "black": [0,0,0], | |
| "navy": [0,0,128], | |
| "darkblue": [0,0,139], | |
| "mediumblue": [0,0,205], | |
| "blue": [0,0,255], | |
| "darkgreen": [0,100,0], | |
| "green": [0,128,0], | |
| "teal": [0,128,128], | |
| "darkcyan": [0,139,139], | |
| "deepskyblue": [0,191,255], | |
| "darkturquoise": [0,206,209], | |
| "mediumspringgreen": [0,250,154], | |
| "lime": [0,255,0], | |
| "springgreen": [0,255,127], | |
| "aqua": [0,255,255], | |
| "cyan": [0,255,255], | |
| "midnightblue": [25,25,112], | |
| "dodgerblue": [30,144,255], | |
| "forestgreen": [34,139,34], | |
| "seagreen": [46,139,87], | |
| "darkslategray": [47,79,79], | |
| "darkslategrey": [47,79,79], | |
| "limegreen": [50,205,50], | |
| "mediumseagreen": [60,179,113], | |
| "turquoise": [64,224,208], | |
| "royalblue": [65,105,225], | |
| "steelblue": [70,130,180], | |
| "darkslateblue": [72,61,139], | |
| "mediumturquoise": [72,209,204], | |
| "indigo": [75,0,130], | |
| "darkolivegreen": [85,107,47], | |
| "cadetblue": [95,158,160], | |
| "cornflowerblue": [100,149,237], | |
| "mediumaquamarine": [102,205,170], | |
| "dimgray": [105,105,105], | |
| "dimgrey": [105,105,105], | |
| "slateblue": [106,90,205], | |
| "olivedrab": [107,142,35], | |
| "slategray": [112,128,144], | |
| "slategrey": [112,128,144], | |
| "lightslategray": [119,136,153], | |
| "lightslategrey": [119,136,153], | |
| "mediumslateblue": [123,104,238], | |
| "lawngreen": [124,252,0], | |
| "chartreuse": [127,255,0], | |
| "aquamarine": [127,255,212], | |
| "maroon": [128,0,0], | |
| "purple": [128,0,128], | |
| "olive": [128,128,0], | |
| "gray": [128,128,128], | |
| "grey": [128,128,128], | |
| "skyblue": [135,206,235], | |
| "lightskyblue": [135,206,250], | |
| "blueviolet": [138,43,226], | |
| "darkred": [139,0,0], | |
| "darkmagenta": [139,0,139], | |
| "saddlebrown": [139,69,19], | |
| "darkseagreen": [143,188,143], | |
| "lightgreen": [144,238,144], | |
| "mediumpurple": [147,112,216], | |
| "darkviolet": [148,0,211], | |
| "palegreen": [152,251,152], | |
| "darkorchid": [153,50,204], | |
| "yellowgreen": [154,205,50], | |
| "sienna": [160,82,45], | |
| "brown": [165,42,42], | |
| "darkgray": [169,169,169], | |
| "darkgrey": [169,169,169], | |
| "lightblue": [173,216,230], | |
| "greenyellow": [173,255,47], | |
| "paleturquoise": [175,238,238], | |
| "lightsteelblue": [176,196,222], | |
| "powderblue": [176,224,230], | |
| "firebrick": [178,34,34], | |
| "darkgoldenrod": [184,134,11], | |
| "mediumorchid": [186,85,211], | |
| "rosybrown": [188,143,143], | |
| "darkkhaki": [189,183,107], | |
| "silver": [192,192,192], | |
| "mediumvioletred": [199,21,133], | |
| "indianred": [205,92,92], | |
| "peru": [205,133,63], | |
| "chocolate": [210,105,30], | |
| "tan": [210,180,140], | |
| "lightgray": [211,211,211], | |
| "lightgrey": [211,211,211], | |
| "palevioletred": [216,112,147], | |
| "thistle": [216,191,216], | |
| "orchid": [218,112,214], | |
| "goldenrod": [218,165,32], | |
| "crimson": [220,20,60], | |
| "gainsboro": [220,220,220], | |
| "plum": [221,160,221], | |
| "burlywood": [222,184,135], | |
| "lightcyan": [224,255,255], | |
| "lavender": [230,230,250], | |
| "darksalmon": [233,150,122], | |
| "violet": [238,130,238], | |
| "palegoldenrod": [238,232,170], | |
| "lightcoral": [240,128,128], | |
| "khaki": [240,230,140], | |
| "aliceblue": [240,248,255], | |
| "honeydew": [240,255,240], | |
| "azure": [240,255,255], | |
| "sandybrown": [244,164,96], | |
| "wheat": [245,222,179], | |
| "beige": [245,245,220], | |
| "whitesmoke": [245,245,245], | |
| "mintcream": [245,255,250], | |
| "ghostwhite": [248,248,255], | |
| "salmon": [250,128,114], | |
| "antiquewhite": [250,235,215], | |
| "linen": [250,240,230], | |
| "lightgoldenrodyellow": [250,250,210], | |
| "oldlace": [253,245,230], | |
| "red": [255,0,0], | |
| "fuchsia": [255,0,255], | |
| "magenta": [255,0,255], | |
| "deeppink": [255,20,147], | |
| "orangered": [255,69,0], | |
| "tomato": [255,99,71], | |
| "hotpink": [255,105,180], | |
| "coral": [255,127,80], | |
| "darkorange": [255,140,0], | |
| "lightsalmon": [255,160,122], | |
| "orange": [255,165,0], | |
| "lightpink": [255,182,193], | |
| "pink": [255,192,203], | |
| "gold": [255,215,0], | |
| "peachpuff": [255,218,185], | |
| "navajowhite": [255,222,173], | |
| "moccasin": [255,228,181], | |
| "bisque": [255,228,196], | |
| "mistyrose": [255,228,225], | |
| "blanchedalmond": [255,235,205], | |
| "papayawhip": [255,239,213], | |
| "lavenderblush": [255,240,245], | |
| "seashell": [255,245,238], | |
| "cornsilk": [255,248,220], | |
| "lemonchiffon": [255,250,205], | |
| "floralwhite": [255,250,240], | |
| "snow": [255,250,250], | |
| "yellow": [255,255,0], | |
| "lightyellow": [255,255,224], | |
| "ivory": [255,255,240], | |
| "white": [255,255,255] | |
| } | |
| } | |