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av.color.js
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av.color.js
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/**
* Constructor de objeto Color
* @class Color
* @param {object} a - puede ser un objeto {formato:[valores]}, un string '#RRGGBB' o '#RGB' o un string con el nombre HTML5 del color
* @author Abel Vázquez
* @version 1.0.0
*/
Color = function (a) {
try {
if (a == void 0) {
this.rgb = [0, 0, 0];
} else if (typeof (a) == 'string') {
this.rgb = Color.hexToRgb(a) || Color.hexToRgb(Color.HTML5[a]);
} else if (a.hasOwnProperty('hex')) {
this.rgb = Color.hexToRgb(a.hex)
} else if (a.hasOwnProperty('rgb')) {
this.rgb = a.rgb;
} else if (a.hasOwnProperty('hsl')) {
this.rgb = Color.hslToRgb(a.hsl[0],a.hsl[1],a.hsl[2]);
} else if (a.hasOwnProperty('hsv')) {
this.rgb = Color.hsvToRgb(a.hsv[0],a.hsv[1],a.hsv[2]);
};
} catch (error) {
if (typeof (a) == 'string') {
console.error('El color solicitado (' + a + '), no existe. http://www.w3schools.com/html/html_colornames.asp')
} else {
throw ("New color error: " + error.message);
}
this.rgb = [0, 0, 0];
}
/**
* @property HTML5
*/
Object.defineProperty(this, 'HTML5', {
set: function (a) {
this.rgb = Color.hexToRgb(Color.HTML5[a]);
},
get: function () {
for (var c in Color.HTML5) {
if (Color.HTML5[c].toLowerCase() == Color.rgbToHex(this.rgb[0], this.rgb[1], this.rgb[2])) return c;
}
return '';
},
enumerable: true
});
/**
* @property red
*/
Object.defineProperty(this, 'red', {
set: function (a) {
this.rgb[0] = a;
},
get: function () {
return this.rgb[0];
},
enumerable: true
});
/**
* @property green
*/
Object.defineProperty(this, 'green', {
set: function (a) {
this.rgb[1] = a;
},
get: function () {
return this.rgb[1];
},
enumerable: true
});
/**
* @property blue
*/
Object.defineProperty(this, 'blue', {
set: function (a) {
this.rgb[2] = a;
},
get: function () {
return this.rgb[2];
},
enumerable: true
});
/**
* @property hex
*/
Object.defineProperty(this, 'hex', {
set: function (a) {
this.rgb = Color.hexToRgb(a);
},
get: function () {
return Color.rgbToHex(this.rgb[0], this.rgb[1], this.rgb[2]);
},
enumerable: true
});
/**
* @property hsl
*/
Object.defineProperty(this, 'hsl', {
set: function (a) {
this.rgb = Color.hslToRgb(a[0], a[1], a[2]);
},
get: function () {
return Color.rgbToHsl(this.rgb[0], this.rgb[1], this.rgb[2]);
},
enumerable: true
});
/**
* @property hsv
*/
Object.defineProperty(this, 'hsv', {
set: function (a) {
this.rgb = Color.hsvToRgb((a[0], a[1], a[2]));
},
get: function () {
return Color.rgbToHsv(this.rgb[0], this.rgb[1], this.rgb[2]);
},
enumerable: true
});
/**
* @property luminance
*/
Object.defineProperty(this, 'luminance', {
set: function (a) {
this.rgb = Color.hslToRgb(this.hsl[0], this.hsl[1], a);
},
get: function () {
return this.hsl[2];
},
enumerable: true
});
/**
* @property saturation
*/
Object.defineProperty(this, 'saturation', {
set: function (a) {
this.rgb = Color.hslToRgb(this.hsl[0], a, this.hsl[2]);
},
get: function () {
return this.hsl[1];
},
enumerable: true
});
/**
* @property hue
*/
Object.defineProperty(this, 'hue', {
set: function (a) {
this.rgb = Color.hslToRgb(a, this.hsl[1], this.hsl[2]);
},
get: function () {
return this.hsl[0];
},
enumerable: true
});
this.invert = function () {
this.hex = Color.invert(this.hex);
}
}
/**
* Devuelve los valores RGB de un color expresado en hexadecimal como RRGGBB o RGB, con o sin #
* @method hexToRgb
* @param {string} hex - cadena hexadecimal que representa el color
* @returns {array} - los valores decimales de cada canal
* @author Abel Vázquez
* @version 1.0.0
*/
Color.hexToRgb = function (hex) {
hex = hex.toLowerCase();
var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i,
hex2 = hex.replace(shorthandRegex, function (m, r, g, b) {
return r + r + g + g + b + b;
}),
result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex2);
return result ? [
parseInt(result[1], 16),
parseInt(result[2], 16),
parseInt(result[3], 16)
] : void 0;
}
/**
* Genera la cadena de color hexadecimal en formato #RRGGBB a partir de los valores de cada canal
* @method rgbToHex
* @param {number} r - valor decimal del canal rojo
* @param {number} g - valor decimal del canal verde
* @param {number} b - valor decimal del canal azul
* @returns {string} - nuevo valor de color hexadecimal
* @author Abel Vázquez
* @version 1.0.0
*/
Color.rgbToHex = function (r, g, b) {
return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}
/**
* Converts an RGB color value to HSL. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes r, g, and b are contained in the set [0, 255] and
* returns h, s, and l in the set [0, 1].
* @method rgbToHsl
* @param Number r The red color value
* @param Number g The green color value
* @param Number b The blue color value
* @return Array The HSL representation
*/
Color.rgbToHsl = function (r, g, b) {
r /= 255, g /= 255, b /= 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. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes h, s, and l are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
* @method hslToRgb
* @param Number h The hue
* @param Number s The saturation
* @param Number l The lightness
* @return Array The RGB representation
*/
Color.hslToRgb = function (h, s, l) {
var r, g, b;
if (s == 0) {
r = g = b = l; // achromatic
} 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 q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = hue2rgb(p, q, h + 1 / 3);
g = hue2rgb(p, q, h);
b = hue2rgb(p, q, h - 1 / 3);
}
return [r * 255, g * 255, b * 255];
}
/**
* Converts an RGB color value to HSV. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSV_color_space.
* Assumes r, g, and b are contained in the set [0, 255] and
* returns h, s, and v in the set [0, 1].
* @method rgbToHsv
* @param Number r The red color value
* @param Number g The green color value
* @param Number b The blue color value
* @return Array The HSV representation
*/
Color.rgbToHsv = function (r, g, b) {
r = r / 255, g = g / 255, b = b / 255;
var max = Math.max(r, g, b),
min = Math.min(r, g, b);
var h, s, v = max;
var d = max - min;
s = max == 0 ? 0 : d / max;
if (max == min) {
h = 0; // achromatic
} else {
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, v];
}
/**
* Converts an HSV color value to RGB. Conversion formula
* adapted from http://en.wikipedia.org/wiki/HSV_color_space.
* Assumes h, s, and v are contained in the set [0, 1] and
* returns r, g, and b in the set [0, 255].
* @method hsvToRgb
* @param Number h The hue
* @param Number s The saturation
* @param Number v The value
* @return Array The RGB representation
*/
Color.hsvToRgb = function (h, s, v) {
var r, g, b;
var i = Math.floor(h * 6);
var f = h * 6 - i;
var p = v * (1 - s);
var q = v * (1 - f * s);
var t = v * (1 - (1 - f) * s);
switch (i % 6) {
case 0:
r = v, g = t, b = p;
break;
case 1:
r = q, g = v, b = p;
break;
case 2:
r = p, g = v, b = t;
break;
case 3:
r = p, g = q, b = v;
break;
case 4:
r = t, g = p, b = v;
break;
case 5:
r = v, g = p, b = q;
break;
}
return [r * 255, g * 255, b * 255];
}
/**
* Aumentamos la luminancia de un color expresado en RGB
* @method Luminance
* @param {number} lum - factor en tanto por uno
* @returns {array} - nuevo valor de color RGB
* @author Abel Vázquez
* @version 1.0.0
*/
Color.Luminance = function (rgb, lum) {
var hsl = Color.rgbToHsl(rgb[0], rgb[1], rgb[2]);
return Color.hslToRgb(hsl[0], hsl[1], hsl[2] * lum);
}
/**
* Listado de equivalencias HTML5-RGB
* @property HTML5
* @author Abel Vázquez
* @version 1.0.0
*/
Color.HTML5 = {
"AliceBlue": "#F0F8FF",
"AntiqueWhite": "#FAEBD7",
"Aqua": "#00FFFF",
"Aquamarine": "#7FFFD4",
"Azure": "#F0FFFF",
"Beige": "#F5F5DC",
"Bisque": "#FFE4C4",
"Black": "#000000",
"BlanchedAlmond": "#FFEBCD",
"Blue": "#0000FF",
"BlueViolet": "#8A2BE2",
"Brown": "#A52A2A",
"BurlyWood": "#DEB887",
"CadetBlue": "#5F9EA0",
"Chartreuse": "#7FFF00",
"Chocolate": "#D2691E",
"Coral": "#FF7F50",
"CornflowerBlue": "#6495ED",
"Cornsilk": "#FFF8DC",
"Crimson": "#DC143C",
"Cyan": "#00FFFF",
"DarkBlue": "#00008B",
"DarkCyan": "#008B8B",
"DarkGoldenRod": "#B8860B",
"DarkGray": "#A9A9A9",
"DarkGreen": "#006400",
"DarkKhaki": "#BDB76B",
"DarkMagenta": "#8B008B",
"DarkOliveGreen": "#556B2F",
"DarkOrange": "#FF8C00",
"DarkOrchid": "#9932CC",
"DarkRed": "#8B0000",
"DarkSalmon": "#E9967A",
"DarkSeaGreen": "#8FBC8F",
"DarkSlateBlue": "#483D8B",
"DarkSlateGray": "#2F4F4F",
"DarkTurquoise": "#00CED1",
"DarkViolet": "#9400D3",
"DeepPink": "#FF1493",
"DeepSkyBlue": "#00BFFF",
"DimGray": "#696969",
"DodgerBlue": "#1E90FF",
"FireBrick": "#B22222",
"FloralWhite": "#FFFAF0",
"ForestGreen": "#228B22",
"Fuchsia": "#FF00FF",
"Gainsboro": "#DCDCDC",
"GhostWhite": "#F8F8FF",
"Gold": "#FFD700",
"GoldenRod": "#DAA520",
"Gray": "#808080",
"Green": "#008000",
"GreenYellow": "#ADFF2F",
"HoneyDew": "#F0FFF0",
"HotPink": "#FF69B4",
"IndianRed": "#CD5C5C",
"Indigo": "#4B0082",
"Ivory": "#FFFFF0",
"Khaki": "#F0E68C",
"Lavender": "#E6E6FA",
"LavenderBlush": "#FFF0F5",
"LawnGreen": "#7CFC00",
"LemonChiffon": "#FFFACD",
"LightBlue": "#ADD8E6",
"LightCoral": "#F08080",
"LightCyan": "#E0FFFF",
"LightGoldenRodYellow": "#FAFAD2",
"LightGray": "#D3D3D3",
"LightGreen": "#90EE90",
"LightPink": "#FFB6C1",
"LightSalmon": "#FFA07A",
"LightSeaGreen": "#20B2AA",
"LightSkyBlue": "#87CEFA",
"LightSlateGray": "#778899",
"LightSteelBlue": "#B0C4DE",
"LightYellow": "#FFFFE0",
"Lime": "#00FF00",
"LimeGreen": "#32CD32",
"Linen": "#FAF0E6",
"Magenta": "#FF00FF",
"Maroon": "#800000",
"MediumAquaMarine": "#66CDAA",
"MediumBlue": "#0000CD",
"MediumOrchid": "#BA55D3",
"MediumPurple": "#9370DB",
"MediumSeaGreen": "#3CB371",
"MediumSlateBlue": "#7B68EE",
"MediumSpringGreen": "#00FA9A",
"MediumTurquoise": "#48D1CC",
"MediumVioletRed": "#C71585",
"MidnightBlue": "#191970",
"MintCream": "#F5FFFA",
"MistyRose": "#FFE4E1",
"Moccasin": "#FFE4B5",
"NavajoWhite": "#FFDEAD",
"Navy": "#000080",
"OldLace": "#FDF5E6",
"Olive": "#808000",
"OliveDrab": "#6B8E23",
"Orange": "#FFA500",
"OrangeRed": "#FF4500",
"Orchid": "#DA70D6",
"PaleGoldenRod": "#EEE8AA",
"PaleGreen": "#98FB98",
"PaleTurquoise": "#AFEEEE",
"PaleVioletRed": "#DB7093",
"PapayaWhip": "#FFEFD5",
"PeachPuff": "#FFDAB9",
"Peru": "#CD853F",
"Pink": "#FFC0CB",
"Plum": "#DDA0DD",
"PowderBlue": "#B0E0E6",
"Purple": "#800080",
"Red": "#FF0000",
"RosyBrown": "#BC8F8F",
"RoyalBlue": "#4169E1",
"SaddleBrown": "#8B4513",
"Salmon": "#FA8072",
"SandyBrown": "#F4A460",
"SeaGreen": "#2E8B57",
"SeaShell": "#FFF5EE",
"Sienna": "#A0522D",
"Silver": "#C0C0C0",
"SkyBlue": "#87CEEB",
"SlateBlue": "#6A5ACD",
"SlateGray": "#708090",
"Snow": "#FFFAFA",
"SpringGreen": "#00FF7F",
"SteelBlue": "#4682B4",
"Tan": "#D2B48C",
"Teal": "#008080",
"Thistle": "#D8BFD8",
"Tomato": "#FF6347",
"Turquoise": "#40E0D0",
"Violet": "#EE82EE",
"Wheat": "#F5DEB3",
"White": "#FFFFFF",
"WhiteSmoke": "#F5F5F5",
"Yellow": "#FFFF00",
"YellowGreen": "#9ACD32"
}
/**
* Invierte un color
* @param {String} hex Expresión hexadecimal del color de entrada
* @return {String} Expresión hexadecimal del color de salida
*/
Color.invert = function (hex) {
var color = hex;
color = color.substring(1); // remove #
color = parseInt(color, 16); // convert to integer
color = 0xFFFFFF ^ color; // invert three bytes
color = color.toString(16); // convert to hex
color = ("000000" + color).slice(-6); // pad with leading zeros
color = "#" + color; // prepend #
return color;
}
/**
* Devuelve el valor del color para un gradiente, en un punto determinado
* @param {Color} color1 Color inicial
* @param {Color} color2 Color final
* @param {integer} percent Valor de 0 a 100
* @return Color
*/
Color.gradient = function (color1, color2, percent) {
var c1 = new Color(color1),
c2 = new Color(color2),
c3 = new Color(),
linear = function (x, y, z) {
return (x + Math.round((y - x) * (z / 100)));
};
c3.rgb = c1.rgb.map(function (a, b) {
return linear(a, c2.rgb[b], percent);
});
return c3;
}
/**
* Constructor de objeto Color.Gradient
* @class Gradient
* @param {array} options array de objetos { stop (integer), color (Color) }
* @author Guzmán Fernández
* @version 1.0.0
*/
Color.Gradient = function (options) {
this.options = options.sort(function (a, b) {
return a.stop - b.stop;
});
}
/**
* Devuelve el valor del color en un punto determinado del gradiente
* @param {integer} percent Valor de 0 a 100
* @return Color
*/
Color.Gradient.prototype.get = function (percentage) {
var current,
idx,
start,
startColor,
stop,
stopColor,
value;
for (var i = 0, len = this.options.length; i < len; i++) {
if (percentage >= this.options[i].stop && i < len -1) continue;
start = this.options[i - 1];
stop = this.options[i];
percent = (percentage != 0 && percentage != 100) ? ((percentage - start.stop) * 100 / (stop.stop - start.stop)) : percentage;
break;
}
return Color.gradient(start.color, stop.color, percent);
}