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< a href = "Phaser.TilemapLayer.html" > TilemapLayer< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TilemapParser.html" > TilemapParser< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Tileset.html" > Tileset< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TileSprite.html" > TileSprite< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Time.html" > Time< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Timer.html" > Timer< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TimerEvent.html" > TimerEvent< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Touch.html" > Touch< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Tween.html" > Tween< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.TweenManager.html" > TweenManager< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.Utils.html" > Utils< / a >
< / li >
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< li class = "class-depth-2" >
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< a href = "Phaser.Utils.Debug.html" > Debug< / a >
< / li >
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< li class = "class-depth-1" >
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< a href = "Phaser.World.html" > World< / a >
< / li >
< / ul >
< / li >
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< / ul >
< / div >
< / div >
< div class = "row-fluid" >
< div class = "span12" >
< div id = "main" >
< h1 class = "page-title" > Source: utils/Color.js< / h1 >
< section >
< article >
< pre class = "sunlight-highlight-javascript linenums" > /**
* @author Richard Davey < rich@photonstorm.com>
2014-02-05 06:29:17 +00:00
* @copyright 2014 Photon Storm Ltd.
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* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
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* The Phaser.Color class is a set of static methods that assist in color manipulation and conversion.
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*
* @class Phaser.Color
*/
Phaser.Color = {
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/**
* Packs the r, g, b, a components into a single integer, for use with Int32Array.
* If device is little endian then ABGR order is used. Otherwise RGBA order is used.
*
* @author Matt DesLauriers (@mattdesl)
* @method Phaser.Color.packPixel
* @static
* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
* @param {number} a - The alpha color component, in the range 0 - 255.
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* @return {number} The packed color as uint32
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*/
packPixel: function (r, g, b, a) {
if (Phaser.Device.LITTLE_ENDIAN)
{
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return ( (a < < 24) | (b < < 16) | (g < < 8) | r ) >>> 0;
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}
else
{
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return ( (r < < 24) | (g < < 16) | (b < < 8) | a ) >>> 0;
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}
},
/**
* Unpacks the r, g, b, a components into the specified color object, or a new
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* object, for use with Int32Array. If little endian, then ABGR order is used when
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* unpacking, otherwise, RGBA order is used. The resulting color object has the
* `r, g, b, a` properties which are unrelated to endianness.
*
* Note that the integer is assumed to be packed in the correct endianness. On little-endian
* the format is 0xAABBGGRR and on big-endian the format is 0xRRGGBBAA. If you want a
* endian-independent method, use fromRGBA(rgba) and toRGBA(r, g, b, a).
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*
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* @author Matt DesLauriers (@mattdesl)
* @method Phaser.Color.unpackPixel
* @static
* @param {number} rgba - The integer, packed in endian order by packPixel.
* @param {object} [out] - An object into which 3 properties will be created: r, g and b. If not provided a new object will be created.
* @param {boolean} [hsl=false] - Also convert the rgb values into hsl?
* @param {boolean} [hsv=false] - Also convert the rgb values into hsv?
* @return {object} An object with the red, green and blue values set in the r, g and b properties.
*/
unpackPixel: function (rgba, out, hsl, hsv) {
if (typeof out === 'undefined' || out === null) { out = Phaser.Color.createColor(); }
if (typeof hsl === 'undefined' || hsl === null) { hsl = false; }
if (typeof hsv === 'undefined' || hsv === null) { hsv = false; }
if (Phaser.Device.LITTLE_ENDIAN)
{
out.a = ((rgba & 0xff000000) >>> 24);
out.b = ((rgba & 0x00ff0000) >>> 16);
out.g = ((rgba & 0x0000ff00) >>> 8);
out.r = ((rgba & 0x000000ff));
}
else
{
out.r = ((rgba & 0xff000000) >>> 24);
out.g = ((rgba & 0x00ff0000) >>> 16);
out.b = ((rgba & 0x0000ff00) >>> 8);
out.a = ((rgba & 0x000000ff));
}
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out.color = rgba;
out.rgba = 'rgba(' + out.r + ',' + out.g + ',' + out.b + ',' + (out.a / 255) + ')';
if (hsl)
{
Phaser.Color.RGBtoHSL(out.r, out.g, out.b, out);
}
if (hsv)
{
Phaser.Color.RGBtoHSV(out.r, out.g, out.b, out);
}
return out;
},
/**
* A utility to convert an integer in 0xRRGGBBAA format to a color object.
* This does not rely on endianness.
*
* @author Matt DesLauriers (@mattdesl)
* @method Phaser.Color.fromRGBA
* @static
* @param {number} rgba - An RGBA hex
* @param {object} [out] - The object to use, optional.
* @return {object} A color object.
*/
fromRGBA: function (rgba, out) {
if (!out)
{
out = Phaser.Color.createColor();
}
out.r = ((rgba & 0xff000000) >>> 24);
out.g = ((rgba & 0x00ff0000) >>> 16);
out.b = ((rgba & 0x0000ff00) >>> 8);
out.a = ((rgba & 0x000000ff));
out.rgba = 'rgba(' + out.r + ',' + out.g + ',' + out.b + ',' + out.a + ')';
return out;
},
/**
* A utility to convert RGBA components to a 32 bit integer in RRGGBBAA format.
*
* @author Matt DesLauriers (@mattdesl)
* @method Phaser.Color.toRGBA
* @static
* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
* @param {number} a - The alpha color component, in the range 0 - 255.
* @return {number} A RGBA-packed 32 bit integer
*/
toRGBA: function (r, g, b, a) {
return (r < < 24) | (g < < 16) | (b < < 8) | a;
},
/**
* Converts an RGB color value to HSL (hue, saturation and lightness).
* Conversion forumla from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes RGB values are contained in the set [0, 255] and returns h, s and l in the set [0, 1].
* Based on code by Michael Jackson (https://github.com/mjijackson)
*
* @method Phaser.Color.RGBtoHSL
* @static
* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
* @param {object} [out] - An object into which 3 properties will be created, h, s and l. If not provided a new object will be created.
* @return {object} An object with the hue, saturation and lightness values set in the h, s and l properties.
*/
RGBtoHSL: function (r, g, b, out) {
if (!out)
{
out = Phaser.Color.createColor(r, g, b, 1);
}
r /= 255;
g /= 255;
b /= 255;
var min = Math.min(r, g, b);
var max = Math.max(r, g, b);
// achromatic by default
out.h = 0;
out.s = 0;
out.l = (max + min) / 2;
if (max !== min)
{
var d = max - min;
out.s = out.l > 0.5 ? d / (2 - max - min) : d / (max + min);
if (max === r)
{
out.h = (g - b) / d + (g < b ? 6 : 0);
}
else if (max === g)
{
out.h = (b - r) / d + 2;
}
else if (max === b)
{
out.h = (r - g) / d + 4;
}
out.h /= 6;
}
return out;
},
/**
* Converts an HSL (hue, saturation and lightness) color value to RGB.
* Conversion forumla from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes HSL values are contained in the set [0, 1] and returns r, g and b values in the set [0, 255].
* Based on code by Michael Jackson (https://github.com/mjijackson)
*
* @method Phaser.Color.HSLtoRGB
* @static
* @param {number} h - The hue, in the range 0 - 1.
* @param {number} s - The saturation, in the range 0 - 1.
* @param {number} l - The lightness, in the range 0 - 1.
* @param {object} [out] - An object into which 3 properties will be created: r, g and b. If not provided a new object will be created.
* @return {object} An object with the red, green and blue values set in the r, g and b properties.
*/
HSLtoRGB: function (h, s, l, out) {
if (!out)
{
out = Phaser.Color.createColor(l, l, l);
}
else
{
// achromatic by default
out.r = l;
out.g = l;
out.b = l;
}
if (s !== 0)
{
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
out.r = Phaser.Color.hueToColor(p, q, h + 1 / 3);
out.g = Phaser.Color.hueToColor(p, q, h);
out.b = Phaser.Color.hueToColor(p, q, h - 1 / 3);
}
// out.r = (out.r * 255 | 0);
// out.g = (out.g * 255 | 0);
// out.b = (out.b * 255 | 0);
out.r = Math.floor((out.r * 255 | 0));
out.g = Math.floor((out.g * 255 | 0));
out.b = Math.floor((out.b * 255 | 0));
Phaser.Color.updateColor(out);
return out;
},
/**
* Converts an RGB color value to HSV (hue, saturation and value).
* Conversion forumla from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes RGB values are contained in the set [0, 255] and returns h, s and v in the set [0, 1].
* Based on code by Michael Jackson (https://github.com/mjijackson)
*
* @method Phaser.Color.RGBtoHSV
* @static
* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
* @param {object} [out] - An object into which 3 properties will be created, h, s and v. If not provided a new object will be created.
* @return {object} An object with the hue, saturation and value set in the h, s and v properties.
*/
RGBtoHSV: function (r, g, b, out) {
if (!out)
{
out = Phaser.Color.createColor(r, g, b, 255);
}
r /= 255;
g /= 255;
b /= 255;
var min = Math.min(r, g, b);
var max = Math.max(r, g, b);
var d = max - min;
// achromatic by default
out.h = 0;
out.s = max === 0 ? 0 : d / max;
out.v = max;
if (max !== min)
{
if (max === r)
{
out.h = (g - b) / d + (g < b ? 6 : 0);
}
else if (max === g)
{
out.h = (b - r) / d + 2;
}
else if (max === b)
{
out.h = (r - g) / d + 4;
}
out.h /= 6;
}
return out;
},
/**
* Converts an HSV (hue, saturation and value) color value to RGB.
* Conversion forumla from http://en.wikipedia.org/wiki/HSL_color_space.
* Assumes HSV values are contained in the set [0, 1] and returns r, g and b values in the set [0, 255].
* Based on code by Michael Jackson (https://github.com/mjijackson)
*
* @method Phaser.Color.HSVtoRGB
* @static
* @param {number} h - The hue, in the range 0 - 1.
* @param {number} s - The saturation, in the range 0 - 1.
* @param {number} v - The value, in the range 0 - 1.
* @param {object} [out] - An object into which 3 properties will be created: r, g and b. If not provided a new object will be created.
* @return {object} An object with the red, green and blue values set in the r, g and b properties.
*/
HSVtoRGB: function (h, s, v, out) {
if (typeof out === 'undefined') { out = Phaser.Color.createColor(0, 0, 0, 1, h, s, 0, 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;
}
out.r = Math.floor(r * 255);
out.g = Math.floor(g * 255);
out.b = Math.floor(b * 255);
Phaser.Color.updateColor(out);
return out;
},
/**
* Converts a hue to an RGB color.
* Based on code by Michael Jackson (https://github.com/mjijackson)
*
* @method Phaser.Color.hueToColor
* @static
* @param {number} p
* @param {number} q
* @param {number} t
* @return {number} The color component value.
*/
hueToColor: function (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;
},
/**
* A utility function to create a lightweight 'color' object with the default components.
* Any components that are not specified will default to zero.
*
* This is useful when you want to use a shared color object for the getPixel and getPixelAt methods.
*
* @author Matt DesLauriers (@mattdesl)
* @method Phaser.Color.createColor
* @static
* @param {number} [r=0] - The red color component, in the range 0 - 255.
* @param {number} [g=0] - The green color component, in the range 0 - 255.
* @param {number} [b=0] - The blue color component, in the range 0 - 255.
* @param {number} [a=1] - The alpha color component, in the range 0 - 1.
* @param {number} [h=0] - The hue, in the range 0 - 1.
* @param {number} [s=0] - The saturation, in the range 0 - 1.
* @param {number} [l=0] - The lightness, in the range 0 - 1.
* @param {number} [v=0] - The value, in the range 0 - 1.
* @return {object} The resulting object with r, g, b, a properties and h, s, l and v.
*/
createColor: function (r, g, b, a, h, s, l, v) {
var out = { r: r || 0, g: g || 0, b: b || 0, a: a || 1, h: h || 0, s: s || 0, l: l || 0, v: v || 0, color: 0 };
out.rgba = 'rgba(' + out.r + ',' + out.g + ',' + out.b + ',' + out.a + ')';
return out;
},
/**
* Takes a color object and updates the rgba property.
*
* @method Phaser.Color.updateColor
* @static
* @param {object} out - The color object to update.
* @returns {number} A native color value integer (format: 0xAARRGGBB).
*/
updateColor: function (out) {
out.rgba = 'rgba(' + out.r + ',' + out.g + ',' + out.b + ',' + out.a + ')';
return out;
},
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/**
* Given an alpha and 3 color values this will return an integer representation of it.
*
* @method Phaser.Color.getColor32
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* @static
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* @param {number} a - The alpha color component, in the range 0 - 255.
* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
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* @returns {number} A native color value integer (format: 0xAARRGGBB).
*/
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getColor32: function (a, r, g, b) {
return a < < 24 | r < < 16 | g < < 8 | b;
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},
/**
* Given 3 color values this will return an integer representation of it.
*
* @method Phaser.Color.getColor
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* @static
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* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
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* @returns {number} A native color value integer (format: 0xRRGGBB).
*/
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getColor: function (r, g, b) {
return r < < 16 | g < < 8 | b;
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},
/**
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* Converts the given color values into a string.
* If prefix was '#' it will be in the format `#RRGGBB` otherwise `0xAARRGGBB`.
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*
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* @method Phaser.Color.RGBtoString
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* @static
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* @param {number} r - The red color component, in the range 0 - 255.
* @param {number} g - The green color component, in the range 0 - 255.
* @param {number} b - The blue color component, in the range 0 - 255.
* @param {number} [a=255] - The alpha color component, in the range 0 - 255.
* @param {string} [prefix='#'] - The prefix used in the return string. If '#' it will return `#RRGGBB`, else `0xAARRGGBB`.
* @return {string} A string containing the color values. If prefix was '#' it will be in the format `#RRGGBB` otherwise `0xAARRGGBB`.
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*/
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RGBtoString: function (r, g, b, a, prefix) {
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if (typeof a === 'undefined') { a = 255; }
if (typeof prefix === 'undefined') { prefix = '#'; }
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if (prefix === '#')
{
return '#' + ((1 < < 24) + (r < < 16) + (g < < 8) + b).toString(16).slice(1);
}
else
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{
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return '0x' + Phaser.Color.componentToHex(a) + Phaser.Color.componentToHex(r) + Phaser.Color.componentToHex(g) + Phaser.Color.componentToHex(b);
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}
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},
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/**
* Converts a hex string into an integer color value.
*
* @method Phaser.Color.hexToRGB
* @static
* @param {string} hex - The hex string to convert. Can be in the short-hand format `#03f` or `#0033ff`.
* @return {number} The rgb color value in the format 0xAARRGGBB.
*/
hexToRGB: function (hex) {
var rgb = Phaser.Color.hexToColor(hex);
if (rgb)
{
return Phaser.Color.getColor32(rgb.a, rgb.r, rgb.g, rgb.b);
}
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},
/**
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* Converts a hex string into a Phaser Color object.
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*
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* @method Phaser.Color.hexToColor
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* @static
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* @param {string} hex - The hex string to convert. Can be in the short-hand format `#03f` or `#0033ff`.
* @param {object} [out] - An object into which 3 properties will be created: r, g and b. If not provided a new object will be created.
* @return {object} An object with the red, green and blue values set in the r, g and b properties.
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*/
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hexToColor: function (hex, out) {
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if (!out)
{
out = Phaser.Color.createColor();
}
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// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
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hex = hex.replace(shorthandRegex, function(m, r, g, b) {
return r + r + g + g + b + b;
});
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var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
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if (result)
{
out.r = parseInt(result[1], 16);
out.g = parseInt(result[2], 16);
out.b = parseInt(result[3], 16);
}
return out;
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},
/**
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* Return a string containing a hex representation of the given color component.
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*
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* @method Phaser.Color.componentToHex
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* @static
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* @param {number} color - The color channel to get the hex value for, must be a value between 0 and 255.
* @returns {string} A string of length 2 characters, i.e. 255 = ff, 100 = 64.
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*/
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componentToHex: function (color) {
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var hex = color.toString(16);
return hex.length == 1 ? "0" + hex : hex;
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},
/**
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* Get HSV color wheel values in an array which will be 360 elements in size.
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*
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* @method Phaser.Color.HSVColorWheel
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* @static
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* @param {number} [s=1] - The saturation, in the range 0 - 1.
* @param {number} [v=1] - The value, in the range 0 - 1.
* @return {array} An array containing 360 elements corresponding to the HSV color wheel.
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*/
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HSVColorWheel: function (s, v) {
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if (typeof s === 'undefined') { s = 1.0; }
if (typeof v === 'undefined') { v = 1.0; }
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var colors = [];
for (var c = 0; c < = 359; c++)
{
colors.push(Phaser.Color.HSVtoRGB(c / 359, s, v));
}
return colors;
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},
/**
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* Get HSL color wheel values in an array which will be 360 elements in size.
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*
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* @method Phaser.Color.HSLColorWheel
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* @static
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* @param {number} [s=0.5] - The saturation, in the range 0 - 1.
* @param {number} [l=0.5] - The lightness, in the range 0 - 1.
* @return {array} An array containing 360 elements corresponding to the HSL color wheel.
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*/
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HSLColorWheel: function (s, l) {
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if (typeof s === 'undefined') { s = 0.5; }
if (typeof l === 'undefined') { l = 0.5; }
var colors = [];
for (var c = 0; c < = 359; c++)
{
colors.push(Phaser.Color.HSLtoRGB(c / 359, s, l));
}
return colors;
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},
/**
* Interpolates the two given colours based on the supplied step and currentStep properties.
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*
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* @method Phaser.Color.interpolateColor
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* @static
* @param {number} color1 - The first color value.
* @param {number} color2 - The second color value.
* @param {number} steps - The number of steps to run the interpolation over.
* @param {number} currentStep - The currentStep value. If the interpolation will take 100 steps, a currentStep value of 50 would be half-way between the two.
* @param {number} alpha - The alpha of the returned color.
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* @returns {number} The interpolated color value.
*/
interpolateColor: function (color1, color2, steps, currentStep, alpha) {
if (typeof alpha === "undefined") { alpha = 255; }
var src1 = Phaser.Color.getRGB(color1);
var src2 = Phaser.Color.getRGB(color2);
var r = (((src2.red - src1.red) * currentStep) / steps) + src1.red;
var g = (((src2.green - src1.green) * currentStep) / steps) + src1.green;
var b = (((src2.blue - src1.blue) * currentStep) / steps) + src1.blue;
return Phaser.Color.getColor32(alpha, r, g, b);
},
/**
* Interpolates the two given colours based on the supplied step and currentStep properties.
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*
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* @method Phaser.Color.interpolateColorWithRGB
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* @static
* @param {number} color - The first color value.
* @param {number} r - The red color value, between 0 and 0xFF (255).
* @param {number} g - The green color value, between 0 and 0xFF (255).
* @param {number} b - The blue color value, between 0 and 0xFF (255).
* @param {number} steps - The number of steps to run the interpolation over.
* @param {number} currentStep - The currentStep value. If the interpolation will take 100 steps, a currentStep value of 50 would be half-way between the two.
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* @returns {number} The interpolated color value.
*/
interpolateColorWithRGB: function (color, r, g, b, steps, currentStep) {
var src = Phaser.Color.getRGB(color);
var or = (((r - src.red) * currentStep) / steps) + src.red;
var og = (((g - src.green) * currentStep) / steps) + src.green;
var ob = (((b - src.blue) * currentStep) / steps) + src.blue;
return Phaser.Color.getColor(or, og, ob);
},
/**
* Interpolates the two given colours based on the supplied step and currentStep properties.
* @method Phaser.Color.interpolateRGB
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* @static
* @param {number} r1 - The red color value, between 0 and 0xFF (255).
* @param {number} g1 - The green color value, between 0 and 0xFF (255).
* @param {number} b1 - The blue color value, between 0 and 0xFF (255).
* @param {number} r2 - The red color value, between 0 and 0xFF (255).
* @param {number} g2 - The green color value, between 0 and 0xFF (255).
* @param {number} b2 - The blue color value, between 0 and 0xFF (255).
* @param {number} steps - The number of steps to run the interpolation over.
* @param {number} currentStep - The currentStep value. If the interpolation will take 100 steps, a currentStep value of 50 would be half-way between the two.
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* @returns {number} The interpolated color value.
*/
interpolateRGB: function (r1, g1, b1, r2, g2, b2, steps, currentStep) {
var r = (((r2 - r1) * currentStep) / steps) + r1;
var g = (((g2 - g1) * currentStep) / steps) + g1;
var b = (((b2 - b1) * currentStep) / steps) + b1;
return Phaser.Color.getColor(r, g, b);
},
/**
* Returns a random color value between black and white
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* Set the min value to start each channel from the given offset.
* Set the max value to restrict the maximum color used per channel.
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*
* @method Phaser.Color.getRandomColor
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* @static
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* @param {number} min - The lowest value to use for the color.
* @param {number} max - The highest value to use for the color.
* @param {number} alpha - The alpha value of the returning color (default 255 = fully opaque).
* @returns {number} 32-bit color value with alpha.
*/
getRandomColor: function (min, max, alpha) {
if (typeof min === "undefined") { min = 0; }
if (typeof max === "undefined") { max = 255; }
if (typeof alpha === "undefined") { alpha = 255; }
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// Sanity checks
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if (max > 255 || min > max)
{
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return Phaser.Color.getColor(255, 255, 255);
}
var red = min + Math.round(Math.random() * (max - min));
var green = min + Math.round(Math.random() * (max - min));
var blue = min + Math.round(Math.random() * (max - min));
return Phaser.Color.getColor32(alpha, red, green, blue);
},
/**
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* Return the component parts of a color as an Object with the properties alpha, red, green, blue.
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*
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* Alpha will only be set if it exist in the given color (0xAARRGGBB)
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*
* @method Phaser.Color.getRGB
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* @static
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* @param {number} color - Color in RGB (0xRRGGBB) or ARGB format (0xAARRGGBB).
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* @returns {object} An Object with properties: alpha, red, green, blue (also r, g, b and a). Alpha will only be present if a color value > 16777215 was given.
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*/
getRGB: function (color) {
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if (color > 16777215)
{
// The color value has an alpha component
return {
alpha: color >>> 24,
red: color >> 16 & 0xFF,
green: color >> 8 & 0xFF,
blue: color & 0xFF,
a: color >>> 24,
r: color >> 16 & 0xFF,
g: color >> 8 & 0xFF,
b: color & 0xFF
};
}
else
{
return {
alpha: 255,
red: color >> 16 & 0xFF,
green: color >> 8 & 0xFF,
blue: color & 0xFF,
a: 255,
r: color >> 16 & 0xFF,
g: color >> 8 & 0xFF,
b: color & 0xFF
};
}
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},
/**
* Returns a CSS friendly string value from the given color.
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*
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* @method Phaser.Color.getWebRGB
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* @static
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* @param {number|Object} color - Color in RGB (0xRRGGBB), ARGB format (0xAARRGGBB) or an Object with r, g, b, a properties.
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* @returns {string} A string in the format: 'rgba(r,g,b,a)'
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*/
getWebRGB: function (color) {
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if (typeof color === 'object')
{
return 'rgba(' + color.r.toString() + ',' + color.g.toString() + ',' + color.b.toString() + ',' + (color.a / 255).toString() + ')';
}
else
{
var rgb = Phaser.Color.getRGB(color);
return 'rgba(' + rgb.r.toString() + ',' + rgb.g.toString() + ',' + rgb.b.toString() + ',' + (rgb.a / 255).toString() + ')';
}
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},
/**
* Given a native color value (in the format 0xAARRGGBB) this will return the Alpha component, as a value between 0 and 255.
*
* @method Phaser.Color.getAlpha
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* @static
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* @param {number} color - In the format 0xAARRGGBB.
* @returns {number} The Alpha component of the color, will be between 0 and 1 (0 being no Alpha (opaque), 1 full Alpha (transparent)).
*/
getAlpha: function (color) {
return color >>> 24;
},
/**
* Given a native color value (in the format 0xAARRGGBB) this will return the Alpha component as a value between 0 and 1.
*
* @method Phaser.Color.getAlphaFloat
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* @static
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* @param {number} color - In the format 0xAARRGGBB.
* @returns {number} The Alpha component of the color, will be between 0 and 1 (0 being no Alpha (opaque), 1 full Alpha (transparent)).
*/
getAlphaFloat: function (color) {
return (color >>> 24) / 255;
},
/**
* Given a native color value (in the format 0xAARRGGBB) this will return the Red component, as a value between 0 and 255.
*
* @method Phaser.Color.getRed
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* @static
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* @param {number} color In the format 0xAARRGGBB.
* @returns {number} The Red component of the color, will be between 0 and 255 (0 being no color, 255 full Red).
*/
getRed: function (color) {
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return color >> 16 & 0xFF;
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},
/**
* Given a native color value (in the format 0xAARRGGBB) this will return the Green component, as a value between 0 and 255.
*
* @method Phaser.Color.getGreen
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* @static
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* @param {number} color - In the format 0xAARRGGBB.
* @returns {number} The Green component of the color, will be between 0 and 255 (0 being no color, 255 full Green).
*/
getGreen: function (color) {
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return color >> 8 & 0xFF;
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},
/**
* Given a native color value (in the format 0xAARRGGBB) this will return the Blue component, as a value between 0 and 255.
*
* @method Phaser.Color.getBlue
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* @static
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* @param {number} color - In the format 0xAARRGGBB.
* @returns {number} The Blue component of the color, will be between 0 and 255 (0 being no color, 255 full Blue).
*/
getBlue: function (color) {
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return color & 0xFF;
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},
// The following are all DEPRECATED
/**
* DEPRECATED: This method will be removed in Phaser 2.1.
* Returns a string containing handy information about the given color including string hex value,
* RGB format information. Each section starts on a newline, 3 lines in total.
*
* @method Phaser.Color.getColorInfo
* @static
* @param {number} color - A color value in the format 0xAARRGGBB.
* @returns {string} String containing the 3 lines of information.
*/
getColorInfo: function (color) {
var argb = Phaser.Color.getRGB(color);
// Hex format
var result = Phaser.Color.RGBtoHexstring(color) + "\n";
// RGB format
result = result.concat("Alpha: " + argb.alpha + " Red: " + argb.red + " Green: " + argb.green + " Blue: " + argb.blue) + "\n";
return result;
},
/**
* DEPRECATED: This method will be removed in Phaser 2.1. Please use Phaser.Color.RGBtoString instead.
* Return a string representation of the color in the format 0xAARRGGBB.
*
* @method Phaser.Color.RGBtoHexstring
* @static
* @param {number} color - The color to get the string representation for
* @returns {string} A string of length 10 characters in the format 0xAARRGGBB
*/
RGBtoHexstring: function (color) {
var argb = Phaser.Color.getRGB(color);
return "0x" + Phaser.Color.colorToHexstring(argb.alpha) + Phaser.Color.colorToHexstring(argb.red) + Phaser.Color.colorToHexstring(argb.green) + Phaser.Color.colorToHexstring(argb.blue);
},
/**
* DEPRECATED: This method will be removed in Phaser 2.1. Please use Phaser.Color.RGBtoString instead.
* Return a string representation of the color in the format #RRGGBB.
*
* @method Phaser.Color.RGBtoWebstring
* @static
* @param {number} color - The color to get the string representation for.
* @returns {string} A string of length 10 characters in the format 0xAARRGGBB.
*/
RGBtoWebstring: function (color) {
var argb = Phaser.Color.getRGB(color);
return "#" + Phaser.Color.colorToHexstring(argb.red) + Phaser.Color.colorToHexstring(argb.green) + Phaser.Color.colorToHexstring(argb.blue);
},
/**
* DEPRECATED: This method will be removed in Phaser 2.1. Please use Phaser.Color.componentToHex instead.
* Return a string containing a hex representation of the given color.
*
* @method Phaser.Color.colorToHexstring
* @static
* @param {number} color - The color channel to get the hex value for, must be a value between 0 and 255).
* @returns {string} A string of length 2 characters, i.e. 255 = FF, 0 = 00.
*/
colorToHexstring: function (color) {
var digits = "0123456789ABCDEF";
var lsd = color % 16;
var msd = (color - lsd) / 16;
var hexified = digits.charAt(msd) + digits.charAt(lsd);
return hexified;
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}
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};
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