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<!DOCTYPE html> <html> <head> <title>psdcolor.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="blackwhite.html"> blackwhite.coffee </a> <a class="source" href="brightnesscontrast.html"> brightnesscontrast.coffee </a> <a class="source" href="colorbalance.html"> colorbalance.coffee </a> <a class="source" href="curves.html"> curves.coffee </a> <a class="source" href="exposure.html"> exposure.coffee </a> <a class="source" href="gradient.html"> gradient.coffee </a> <a class="source" href="huesaturation.html"> huesaturation.coffee </a> <a class="source" href="invert.html"> invert.coffee </a> <a class="source" href="layereffect.html"> layereffect.coffee </a> <a class="source" href="levels.html"> levels.coffee </a> <a class="source" href="pattern.html"> pattern.coffee </a> <a class="source" href="photofilter.html"> photofilter.coffee </a> <a class="source" href="posterize.html"> posterize.coffee </a> <a class="source" href="selectivecolor.html"> selectivecolor.coffee </a> <a class="source" href="solidcolor.html"> solidcolor.coffee </a> <a class="source" href="threshold.html"> threshold.coffee </a> <a class="source" href="typetool.html"> typetool.coffee </a> <a class="source" href="vibrance.html"> vibrance.coffee </a> <a class="source" href="log.html"> log.coffee </a> <a class="source" href="psd.html"> psd.coffee </a> <a class="source" href="psdassert.html"> psdassert.coffee </a> <a class="source" href="psdchannelimage.html"> psdchannelimage.coffee </a> <a class="source" href="psdcolor.html"> psdcolor.coffee </a> <a class="source" href="psddescriptor.html"> psddescriptor.coffee </a> <a class="source" href="psdfile.html"> psdfile.coffee </a> <a class="source" href="psdheader.html"> psdheader.coffee </a> <a class="source" href="psdimage.html"> psdimage.coffee </a> <a class="source" href="psdlayer.html"> psdlayer.coffee </a> <a class="source" href="psdlayermask.html"> psdlayermask.coffee </a> <a class="source" href="psdresource.html"> psdresource.coffee </a> <a class="source" href="util.html"> util.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> psdcolor.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> <p>Tons of color conversion functions.
Borrowed directly from CamanJS.</p> </td> <td class="code"> <div class="highlight"><pre><span class="nv">PSD.PSDColor = </span><span class="k">class</span> <span class="nx">PSDColor</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>Converts the hex representation of a color to RGB values.
Hex value can optionally start with the hash (#).</p>
<pre>
@param String hex The colors hex value
@return Array The RGB representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@hexToRGB: </span><span class="nf">(hex) -></span>
<span class="nv">hex = </span><span class="nx">hex</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> <span class="k">if</span> <span class="nx">hex</span><span class="p">.</span><span class="nx">charAt</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> <span class="o">is</span> <span class="s2">"#"</span>
<span class="nv">r = </span><span class="nb">parseInt</span> <span class="nx">hex</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">2</span><span class="p">),</span> <span class="mi">16</span>
<span class="nv">g = </span><span class="nb">parseInt</span> <span class="nx">hex</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">),</span> <span class="mi">16</span>
<span class="nv">b = </span><span class="nb">parseInt</span> <span class="nx">hex</span><span class="p">.</span><span class="nx">substr</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">2</span><span class="p">),</span> <span class="mi">16</span>
<span class="nv">r: </span><span class="nx">r</span><span class="p">,</span> <span class="nv">g: </span><span class="nx">g</span><span class="p">,</span> <span class="nv">b: </span><span class="nx">b</span>
<span class="vi">@rgbToHex: </span><span class="nf">(c) -></span>
<span class="k">if</span> <span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">is</span> <span class="mi">1</span>
<span class="nv">m = </span><span class="sr">/rgba?\((\d+), (\d+), (\d+)/</span><span class="p">.</span><span class="nx">exec</span><span class="p">(</span><span class="nx">c</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">m = </span><span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)</span>
<span class="nx">m</span><span class="p">.</span><span class="nx">unshift</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">m</span> <span class="k">then</span> <span class="s1">'#'</span> <span class="o">+</span> <span class="p">(</span> <span class="nx">m</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o"><<</span> <span class="mi">16</span> <span class="o">|</span> <span class="nx">m</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o"><<</span> <span class="mi">8</span> <span class="o">|</span> <span class="nx">m</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="p">).</span><span class="nx">toString</span><span class="p">(</span><span class="mi">16</span><span class="p">)</span> <span class="k">else</span> <span class="nx">c</span></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>Converts an RGB color to HSL.
Assumes r, g, and b are in the set [0, 255] and
returns h, s, and l in the set [0, 1].</p>
<pre>
@param Number r Red channel
@param Number g Green channel
@param Number b Blue channel
@return The HSL representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@rgbToHSL: </span><span class="nf">(r, g, b) -></span>
<span class="nx">r</span> <span class="err">/= 255</span>
<span class="nx">g</span> <span class="err">/= 255</span>
<span class="nx">b</span> <span class="err">/= 255</span>
<span class="nv">max = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">max</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span>
<span class="nv">min = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">min</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span>
<span class="nv">l = </span><span class="p">(</span><span class="nx">max</span> <span class="o">+</span> <span class="nx">min</span><span class="p">)</span> <span class="o">/</span> <span class="mi">2</span>
<span class="k">if</span> <span class="nx">max</span> <span class="o">is</span> <span class="nx">min</span>
<span class="nv">h = s = </span><span class="mi">0</span>
<span class="k">else</span>
<span class="nv">d = </span><span class="nx">max</span> <span class="o">-</span> <span class="nx">min</span>
<span class="nv">s = </span><span class="k">if</span> <span class="nx">l</span> <span class="o">></span> <span class="mf">0.5</span> <span class="k">then</span> <span class="nx">d</span> <span class="sr">/ (2 - max - min) else d /</span> <span class="p">(</span><span class="nx">max</span> <span class="o">+</span> <span class="nx">min</span><span class="p">)</span>
<span class="nv">h = </span><span class="k">switch</span> <span class="nx">max</span>
<span class="k">when</span> <span class="nx">r</span> <span class="k">then</span> <span class="p">(</span><span class="nx">g</span> <span class="o">-</span> <span class="nx">b</span><span class="p">)</span> <span class="o">/</span> <span class="nx">d</span> <span class="o">+</span> <span class="p">(</span><span class="k">if</span> <span class="nx">g</span> <span class="o"><</span> <span class="nx">b</span> <span class="k">then</span> <span class="mi">6</span> <span class="k">else</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">when</span> <span class="nx">g</span> <span class="k">then</span> <span class="p">(</span><span class="nx">b</span> <span class="o">-</span> <span class="nx">r</span><span class="p">)</span> <span class="o">/</span> <span class="nx">d</span> <span class="o">+</span> <span class="mi">2</span>
<span class="k">when</span> <span class="nx">b</span> <span class="k">then</span> <span class="p">(</span><span class="nx">r</span> <span class="o">-</span> <span class="nx">g</span><span class="p">)</span> <span class="o">/</span> <span class="nx">d</span> <span class="o">+</span> <span class="mi">4</span>
<span class="nx">h</span> <span class="err">/= 6</span>
<span class="nv">h: </span><span class="nx">Util</span><span class="p">.</span><span class="nx">round</span><span class="p">(</span><span class="nx">h</span><span class="p">,</span> <span class="mi">3</span><span class="p">),</span> <span class="nv">s: </span><span class="nx">Util</span><span class="p">.</span><span class="nx">round</span><span class="p">(</span><span class="nx">s</span><span class="p">,</span> <span class="mi">3</span><span class="p">),</span> <span class="nv">l: </span><span class="nx">Util</span><span class="p">.</span><span class="nx">round</span><span class="p">(</span><span class="nx">l</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>Converts an HSL color value to RGB. Conversion formula
adapted from http://en.wikipedia.org/wiki/HSL<em>color</em>space.
Assumes h, s, and l are contained in the set [0, 1] and
returns r, g, and b in the set [0, 255].</p>
<pre>
@param Number h The hue
@param Number s The saturation
@param Number l The lightness
@return Array The RGB representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@hslToRGB: </span><span class="nf">(h, s, l) -></span>
<span class="k">if</span> <span class="nx">s</span> <span class="o">is</span> <span class="mi">0</span>
<span class="nv">r = g = b = </span><span class="nx">l</span>
<span class="k">else</span>
<span class="nv">q = </span><span class="k">if</span> <span class="nx">l</span> <span class="o"><</span> <span class="mf">0.5</span> <span class="k">then</span> <span class="nx">l</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">+</span> <span class="nx">s</span><span class="p">)</span> <span class="k">else</span> <span class="nx">l</span> <span class="o">+</span> <span class="nx">s</span> <span class="o">-</span> <span class="nx">l</span> <span class="o">*</span> <span class="nx">s</span>
<span class="nv">p = </span><span class="mi">2</span> <span class="o">*</span> <span class="nx">l</span> <span class="o">-</span> <span class="nx">q</span>
<span class="nv">r = </span><span class="nx">@hueToRGB</span> <span class="nx">p</span><span class="p">,</span> <span class="nx">q</span><span class="p">,</span> <span class="nx">h</span> <span class="o">+</span> <span class="mi">1</span><span class="o">/</span><span class="mi">3</span>
<span class="nv">g = </span><span class="nx">@hueToRGB</span> <span class="nx">p</span><span class="p">,</span> <span class="nx">q</span><span class="p">,</span> <span class="nx">h</span>
<span class="nv">b = </span><span class="nx">@hueToRGB</span> <span class="nx">p</span><span class="p">,</span> <span class="nx">q</span><span class="p">,</span> <span class="nx">h</span> <span class="o">-</span> <span class="mi">1</span><span class="o">/</span><span class="mi">3</span>
<span class="nx">r</span> <span class="o">*=</span> <span class="mi">255</span>
<span class="nx">g</span> <span class="o">*=</span> <span class="mi">255</span>
<span class="nx">b</span> <span class="o">*=</span> <span class="mi">255</span>
<span class="nv">r: </span><span class="nb">Math</span><span class="p">.</span><span class="nx">round</span><span class="p">(</span><span class="nx">r</span><span class="p">),</span> <span class="nv">g: </span><span class="nb">Math</span><span class="p">.</span><span class="nx">round</span><span class="p">(</span><span class="nx">g</span><span class="p">),</span> <span class="nv">b: </span><span class="nb">Math</span><span class="p">.</span><span class="nx">round</span><span class="p">(</span><span class="nx">b</span><span class="p">)</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>Converts from the hue color space back to RGB</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@hueToRGB: </span><span class="nf">(p, q, t) -></span>
<span class="k">if</span> <span class="nx">t</span> <span class="o"><</span> <span class="mi">0</span> <span class="k">then</span> <span class="nx">t</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="k">if</span> <span class="nx">t</span> <span class="o">></span> <span class="mi">1</span> <span class="k">then</span> <span class="nx">t</span> <span class="o">-=</span> <span class="mi">1</span>
<span class="k">if</span> <span class="nx">t</span> <span class="o"><</span> <span class="mi">1</span><span class="o">/</span><span class="mi">6</span> <span class="k">then</span> <span class="k">return</span> <span class="nx">p</span> <span class="o">+</span> <span class="p">(</span><span class="nx">q</span> <span class="o">-</span> <span class="nx">p</span><span class="p">)</span> <span class="o">*</span> <span class="mi">6</span> <span class="o">*</span> <span class="nx">t</span>
<span class="k">if</span> <span class="nx">t</span> <span class="o"><</span> <span class="mi">1</span><span class="o">/</span><span class="mi">2</span> <span class="k">then</span> <span class="k">return</span> <span class="nx">q</span>
<span class="k">if</span> <span class="nx">t</span> <span class="o"><</span> <span class="mi">2</span><span class="o">/</span><span class="mi">3</span> <span class="k">then</span> <span class="k">return</span> <span class="nx">p</span> <span class="o">+</span> <span class="p">(</span><span class="nx">q</span> <span class="o">-</span> <span class="nx">p</span><span class="p">)</span> <span class="o">*</span> <span class="p">(</span><span class="mi">2</span><span class="o">/</span><span class="mi">3</span> <span class="o">-</span> <span class="nx">t</span><span class="p">)</span> <span class="o">*</span> <span class="mi">6</span>
<span class="k">return</span> <span class="nx">p</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <p>Converts an RGB color value to HSV. Conversion formula
adapted from http://en.wikipedia.org/wiki/HSV<em>color</em>space.
Assumes r, g, and b are contained in the set [0, 255] and
returns h, s, and v in the set [0, 1].</p>
<pre>
@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
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@rgbToHSV: </span><span class="nf">(r, g, b) -></span>
<span class="nx">r</span> <span class="err">/= 255</span>
<span class="nx">g</span> <span class="err">/= 255</span>
<span class="nx">b</span> <span class="err">/= 255</span>
<span class="nv">max = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">max</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span>
<span class="nv">min = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">min</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span>
<span class="nv">v = </span><span class="nx">max</span>
<span class="nv">d = </span><span class="nx">max</span> <span class="o">-</span> <span class="nx">min</span>
<span class="nv">s = </span><span class="k">if</span> <span class="nx">max</span> <span class="o">is</span> <span class="mi">0</span> <span class="k">then</span> <span class="mi">0</span> <span class="k">else</span> <span class="nx">d</span> <span class="err">/ max</span>
<span class="k">if</span> <span class="nx">max</span> <span class="o">is</span> <span class="nx">min</span>
<span class="nv">h = </span><span class="mi">0</span>
<span class="k">else</span>
<span class="nv">h = </span><span class="k">switch</span> <span class="nx">max</span>
<span class="k">when</span> <span class="nx">r</span> <span class="k">then</span> <span class="p">(</span><span class="nx">g</span> <span class="o">-</span> <span class="nx">b</span><span class="p">)</span> <span class="o">/</span> <span class="nx">d</span> <span class="o">+</span> <span class="p">(</span><span class="k">if</span> <span class="nx">g</span> <span class="o"><</span> <span class="nx">b</span> <span class="k">then</span> <span class="mi">6</span> <span class="k">else</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">when</span> <span class="nx">g</span> <span class="k">then</span> <span class="p">(</span><span class="nx">b</span> <span class="o">-</span> <span class="nx">r</span><span class="p">)</span> <span class="o">/</span> <span class="nx">d</span> <span class="o">+</span> <span class="mi">2</span>
<span class="k">when</span> <span class="nx">b</span> <span class="k">then</span> <span class="p">(</span><span class="nx">r</span> <span class="o">-</span> <span class="nx">g</span><span class="p">)</span> <span class="o">/</span> <span class="nx">d</span> <span class="o">+</span> <span class="mi">4</span>
<span class="nx">h</span> <span class="err">/= 6</span>
<span class="nv">h: </span><span class="nx">h</span><span class="p">,</span> <span class="nv">s: </span><span class="nx">s</span><span class="p">,</span> <span class="nv">v: </span><span class="nx">v</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <p>Converts an HSV color value to RGB. Conversion formula
adapted from http://en.wikipedia.org/wiki/HSV<em>color</em>space.
Assumes h, s, and v are contained in the set [0, 1] and
returns r, g, and b in the set [0, 255].</p>
<pre>
@param Number h The hue
@param Number s The saturation
@param Number v The value
@return Array The RGB representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@hsvToRGB: </span><span class="nf">(h, s, v) -></span>
<span class="nv">i = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">floor</span> <span class="nx">h</span> <span class="o">*</span> <span class="mi">6</span>
<span class="nv">f = </span><span class="nx">h</span> <span class="o">*</span> <span class="mi">6</span> <span class="o">-</span> <span class="nx">i</span>
<span class="nv">p = </span><span class="nx">v</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="nx">s</span><span class="p">)</span>
<span class="nv">q = </span><span class="nx">v</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="nx">f</span> <span class="o">*</span> <span class="nx">s</span><span class="p">)</span>
<span class="nv">t = </span><span class="nx">v</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="nx">f</span><span class="p">)</span> <span class="o">*</span> <span class="nx">s</span><span class="p">)</span>
<span class="k">switch</span> <span class="nx">i</span> <span class="o">%</span> <span class="mi">6</span>
<span class="k">when</span> <span class="mi">0</span>
<span class="nv">r = </span><span class="nx">v</span>
<span class="nv">g = </span><span class="nx">t</span>
<span class="nv">b = </span><span class="nx">p</span>
<span class="k">when</span> <span class="mi">1</span>
<span class="nv">r = </span><span class="nx">q</span>
<span class="nv">g = </span><span class="nx">v</span>
<span class="nv">b = </span><span class="nx">p</span>
<span class="k">when</span> <span class="mi">2</span>
<span class="nv">r = </span><span class="nx">p</span>
<span class="nv">g = </span><span class="nx">v</span>
<span class="nv">b = </span><span class="nx">t</span>
<span class="k">when</span> <span class="mi">3</span>
<span class="nv">r = </span><span class="nx">p</span>
<span class="nv">g = </span><span class="nx">q</span>
<span class="nv">b = </span><span class="nx">v</span>
<span class="k">when</span> <span class="mi">4</span>
<span class="nv">r = </span><span class="nx">t</span>
<span class="nv">g = </span><span class="nx">p</span>
<span class="nv">b = </span><span class="nx">v</span>
<span class="k">when</span> <span class="mi">5</span>
<span class="nv">r = </span><span class="nx">v</span>
<span class="nv">g = </span><span class="nx">p</span>
<span class="nv">b = </span><span class="nx">q</span>
<span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="p">{</span><span class="nv">r: </span><span class="nx">r</span> <span class="o">*</span> <span class="mi">255</span><span class="p">,</span> <span class="nv">g: </span><span class="nx">g</span> <span class="o">*</span> <span class="mi">255</span><span class="p">,</span> <span class="nv">b: </span><span class="nx">b</span> <span class="o">*</span> <span class="mi">255</span><span class="p">},</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <p>Converts a RGB color value to the XYZ color space. Formulas
are based on http://en.wikipedia.org/wiki/SRGB assuming that
RGB values are sRGB.</p>
<p>Assumes r, g, and b are contained in the set [0, 255] and
returns x, y, and z.</p>
<pre>
@param Number r The red color value
@param Number g The green color value
@param Number b The blue color value
@return Array The XYZ representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@rgbToXYZ: </span><span class="nf">(r, g, b) -></span>
<span class="nx">r</span> <span class="err">/= 255</span>
<span class="nx">g</span> <span class="err">/= 255</span>
<span class="nx">b</span> <span class="err">/= 255</span>
<span class="k">if</span> <span class="nx">r</span> <span class="o">></span> <span class="mf">0.04045</span>
<span class="nv">r = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">((</span><span class="nx">r</span> <span class="o">+</span> <span class="mf">0.055</span><span class="p">)</span> <span class="o">/</span> <span class="mf">1.055</span><span class="p">,</span> <span class="mf">2.4</span><span class="p">)</span>
<span class="k">else</span>
<span class="nx">r</span> <span class="err">/= 12.92</span>
<span class="k">if</span> <span class="nx">g</span> <span class="o">></span> <span class="mf">0.04045</span>
<span class="nv">g = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">((</span><span class="nx">g</span> <span class="o">+</span> <span class="mf">0.055</span><span class="p">)</span> <span class="o">/</span> <span class="mf">1.055</span><span class="p">,</span> <span class="mf">2.4</span><span class="p">)</span>
<span class="k">else</span>
<span class="nx">g</span> <span class="err">/= 12.92</span>
<span class="k">if</span> <span class="nx">b</span> <span class="o">></span> <span class="mf">0.04045</span>
<span class="nv">b = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">((</span><span class="nx">b</span> <span class="o">+</span> <span class="mf">0.055</span><span class="p">)</span> <span class="o">/</span> <span class="mf">1.055</span><span class="p">,</span> <span class="mf">2.4</span><span class="p">)</span>
<span class="k">else</span>
<span class="nx">b</span> <span class="err">/= 12.92</span>
<span class="nv">x = </span><span class="nx">r</span> <span class="o">*</span> <span class="mf">0.4124</span> <span class="o">+</span> <span class="nx">g</span> <span class="o">*</span> <span class="mf">0.3576</span> <span class="o">+</span> <span class="nx">b</span> <span class="o">*</span> <span class="mf">0.1805</span><span class="p">;</span>
<span class="nv">y = </span><span class="nx">r</span> <span class="o">*</span> <span class="mf">0.2126</span> <span class="o">+</span> <span class="nx">g</span> <span class="o">*</span> <span class="mf">0.7152</span> <span class="o">+</span> <span class="nx">b</span> <span class="o">*</span> <span class="mf">0.0722</span><span class="p">;</span>
<span class="nv">z = </span><span class="nx">r</span> <span class="o">*</span> <span class="mf">0.0193</span> <span class="o">+</span> <span class="nx">g</span> <span class="o">*</span> <span class="mf">0.1192</span> <span class="o">+</span> <span class="nx">b</span> <span class="o">*</span> <span class="mf">0.9505</span><span class="p">;</span>
<span class="nv">x: </span><span class="nx">x</span> <span class="o">*</span> <span class="mi">100</span><span class="p">,</span> <span class="nv">y: </span><span class="nx">y</span> <span class="o">*</span> <span class="mi">100</span><span class="p">,</span> <span class="nv">z: </span><span class="nx">z</span> <span class="o">*</span> <span class="mi">100</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">¶</a> </div> <p>Converts a XYZ color value to the sRGB color space. Formulas
are based on http://en.wikipedia.org/wiki/SRGB and the resulting
RGB value will be in the sRGB color space.
Assumes x, y and z values are whatever they are and returns
r, g and b in the set [0, 255].</p>
<pre>
@param Number x The X value
@param Number y The Y value
@param Number z The Z value
@return Array The RGB representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@xyzToRGB: </span><span class="nf">(x, y, z) -></span>
<span class="nx">x</span> <span class="err">/= 100</span>
<span class="nx">y</span> <span class="err">/= 100</span>
<span class="nx">z</span> <span class="err">/= 100</span>
<span class="nv">r = </span><span class="p">(</span><span class="mf">3.2406</span> <span class="o">*</span> <span class="nx">x</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="o">-</span><span class="mf">1.5372</span> <span class="o">*</span> <span class="nx">y</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="o">-</span><span class="mf">0.4986</span> <span class="o">*</span> <span class="nx">z</span><span class="p">)</span>
<span class="nv">g = </span><span class="p">(</span><span class="o">-</span><span class="mf">0.9689</span> <span class="o">*</span> <span class="nx">x</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="mf">1.8758</span> <span class="o">*</span> <span class="nx">y</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="mf">0.0415</span> <span class="o">*</span> <span class="nx">z</span><span class="p">)</span>
<span class="nv">b = </span><span class="p">(</span><span class="mf">0.0557</span> <span class="o">*</span> <span class="nx">x</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="o">-</span><span class="mf">0.2040</span> <span class="o">*</span> <span class="nx">y</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="mf">1.0570</span> <span class="o">*</span> <span class="nx">z</span><span class="p">)</span>
<span class="k">if</span> <span class="nx">r</span> <span class="o">></span> <span class="mf">0.0031308</span>
<span class="nv">r = </span><span class="p">(</span><span class="mf">1.055</span> <span class="o">*</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">r</span><span class="p">,</span> <span class="mf">0.4166666667</span><span class="p">))</span> <span class="o">-</span> <span class="mf">0.055</span>
<span class="k">else</span>
<span class="nx">r</span> <span class="o">*=</span> <span class="mf">12.92</span>
<span class="k">if</span> <span class="nx">g</span> <span class="o">></span> <span class="mf">0.0031308</span>
<span class="nv">g = </span><span class="p">(</span><span class="mf">1.055</span> <span class="o">*</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">g</span><span class="p">,</span> <span class="mf">0.4166666667</span><span class="p">))</span> <span class="o">-</span> <span class="mf">0.055</span>
<span class="k">else</span>
<span class="nx">g</span> <span class="o">*=</span> <span class="mf">12.92</span>
<span class="k">if</span> <span class="nx">b</span> <span class="o">></span> <span class="mf">0.0031308</span>
<span class="nv">b = </span><span class="p">(</span><span class="mf">1.055</span> <span class="o">*</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="mf">0.4166666667</span><span class="p">))</span> <span class="o">-</span> <span class="mf">0.055</span>
<span class="k">else</span>
<span class="nx">b</span> <span class="o">*=</span> <span class="mf">12.92</span>
<span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="p">{</span><span class="nv">r: </span><span class="nx">r</span> <span class="o">*</span> <span class="mi">255</span><span class="p">,</span> <span class="nv">g: </span><span class="nx">g</span> <span class="o">*</span> <span class="mi">255</span><span class="p">,</span> <span class="nv">b: </span><span class="nx">b</span> <span class="o">*</span> <span class="mi">255</span><span class="p">},</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">¶</a> </div> <p>Converts a XYZ color value to the CIELAB color space. Formulas
are based on http://en.wikipedia.org/wiki/Lab<em>color</em>space
The reference white point used in the conversion is D65.
Assumes x, y and z values are whatever they are and returns
L<em>, a</em> and b* values</p>
<pre>
@param Number x The X value
@param Number y The Y value
@param Number z The Z value
@return Array The Lab representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@xyzToLab: </span><span class="nf">(x, y, z) -></span>
<span class="nv">whiteX = </span><span class="mf">95.047</span>
<span class="nv">whiteY = </span><span class="mf">100.0</span>
<span class="nv">whiteZ = </span><span class="mf">108.883</span>
<span class="nx">x</span> <span class="err">/= whiteX</span>
<span class="nx">y</span> <span class="err">/= whiteY</span>
<span class="nx">z</span> <span class="err">/= whiteZ</span>
<span class="k">if</span> <span class="nx">x</span> <span class="o">></span> <span class="mf">0.008856451679</span>
<span class="nv">x = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">x</span><span class="p">,</span> <span class="mf">0.3333333333</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">x = </span><span class="p">(</span><span class="mf">7.787037037</span> <span class="o">*</span> <span class="nx">x</span><span class="p">)</span> <span class="o">+</span> <span class="mf">0.1379310345</span>
<span class="k">if</span> <span class="nx">y</span> <span class="o">></span> <span class="mf">0.008856451679</span>
<span class="nv">y = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">y</span><span class="p">,</span> <span class="mf">0.3333333333</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">y = </span><span class="p">(</span><span class="mf">7.787037037</span> <span class="o">*</span> <span class="nx">y</span><span class="p">)</span> <span class="o">+</span> <span class="mf">0.1379310345</span>
<span class="k">if</span> <span class="nx">z</span> <span class="o">></span> <span class="mf">0.008856451679</span>
<span class="nv">z = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">z</span><span class="p">,</span> <span class="mf">0.3333333333</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">z = </span><span class="p">(</span><span class="mf">7.787037037</span> <span class="o">*</span> <span class="nx">z</span><span class="p">)</span> <span class="o">+</span> <span class="mf">0.1379310345</span>
<span class="nv">l = </span><span class="mi">116</span> <span class="o">*</span> <span class="nx">y</span> <span class="o">-</span> <span class="mi">16</span>
<span class="nv">a = </span><span class="mi">500</span> <span class="o">*</span> <span class="p">(</span><span class="nx">x</span> <span class="o">-</span> <span class="nx">y</span><span class="p">)</span>
<span class="nv">b = </span><span class="mi">200</span> <span class="o">*</span> <span class="p">(</span><span class="nx">y</span> <span class="o">-</span> <span class="nx">z</span><span class="p">)</span>
<span class="nv">l: </span><span class="nx">l</span><span class="p">,</span> <span class="nv">a: </span><span class="nx">a</span><span class="p">,</span> <span class="nv">b: </span><span class="nx">b</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-11">¶</a> </div> <p>Converts a L<em>, a</em>, b* color values from the CIELAB color space
to the XYZ color space. Formulas are based on
http://en.wikipedia.org/wiki/Lab<em>color</em>space</p>
<p>The reference white point used in the conversion is D65.
Assumes L<em>, a</em> and b* values are whatever they are and returns
x, y and z values.</p>
<pre>
@param Number l The L* value
@param Number a The a* value
@param Number b The b* value
@return Array The XYZ representation
</pre> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@labToXYZ: </span><span class="nf">(l, a, b) -></span>
<span class="nv">y = </span><span class="p">(</span><span class="nx">l</span> <span class="o">+</span> <span class="mi">16</span><span class="p">)</span> <span class="o">/</span> <span class="mi">116</span>
<span class="nv">x = </span><span class="nx">y</span> <span class="o">+</span> <span class="p">(</span><span class="nx">a</span> <span class="err">/ 500)</span>
<span class="nv">z = </span><span class="nx">y</span> <span class="o">-</span> <span class="p">(</span><span class="nx">b</span> <span class="err">/ 200)</span>
<span class="k">if</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">x</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> <span class="o">></span> <span class="mf">0.008856</span>
<span class="nv">x = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">x</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">x = </span><span class="p">(</span><span class="nx">x</span> <span class="o">-</span> <span class="mi">16</span> <span class="o">/</span> <span class="mi">116</span><span class="p">)</span> <span class="o">/</span> <span class="mf">7.787</span>
<span class="k">if</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">y</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> <span class="o">></span> <span class="mf">0.008856</span>
<span class="nv">y = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">y</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">y = </span><span class="p">(</span><span class="nx">y</span> <span class="o">-</span> <span class="mi">16</span> <span class="o">/</span> <span class="mi">116</span><span class="p">)</span> <span class="o">/</span> <span class="mf">7.787</span>
<span class="k">if</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">z</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> <span class="o">></span> <span class="mf">0.008856</span>
<span class="nv">z = </span><span class="nb">Math</span><span class="p">.</span><span class="nx">pow</span><span class="p">(</span><span class="nx">z</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">z = </span><span class="p">(</span><span class="nx">z</span> <span class="o">-</span> <span class="mi">16</span> <span class="o">/</span> <span class="mi">116</span><span class="p">)</span> <span class="o">/</span> <span class="mf">7.787</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-12">¶</a> </div> <p>D65 reference white point</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">x: </span><span class="nx">x</span> <span class="o">*</span> <span class="mf">95.047</span><span class="p">,</span> <span class="nv">y: </span><span class="nx">y</span> <span class="o">*</span> <span class="mf">100.0</span><span class="p">,</span> <span class="nv">z: </span><span class="nx">z</span> <span class="o">*</span> <span class="mf">108.883</span>
<span class="vi">@labToRGB: </span><span class="nf">(l, a, b) -></span>
<span class="nv">xyz = </span><span class="nx">@labToXYZ</span><span class="p">(</span><span class="nx">l</span><span class="p">,</span> <span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span>
<span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="nx">@xyzToRGB</span><span class="p">(</span><span class="nx">xyz</span><span class="p">.</span><span class="nx">x</span><span class="p">,</span> <span class="nx">xyz</span><span class="p">.</span><span class="nx">y</span><span class="p">,</span> <span class="nx">xyz</span><span class="p">.</span><span class="nx">z</span><span class="p">),</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-13">¶</a> </div> <p>Convers CMYK color to RGB. This is not quite as accurate as what
Photoshop actually uses, becasue Photoshop converts using LAB color,
which takes into consideration the monitor white point.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@cmykToRGB: </span><span class="nf">(c, m, y, k) -></span>
<span class="nv">r = </span><span class="p">(</span><span class="mi">65535</span> <span class="o">-</span> <span class="p">(</span><span class="nx">c</span> <span class="o">*</span> <span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="nx">k</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="nx">k</span> <span class="o"><<</span> <span class="mi">8</span><span class="p">)))</span> <span class="o">>></span> <span class="mi">8</span>
<span class="nv">g = </span><span class="p">(</span><span class="mi">65535</span> <span class="o">-</span> <span class="p">(</span><span class="nx">m</span> <span class="o">*</span> <span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="nx">k</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="nx">k</span> <span class="o"><<</span> <span class="mi">8</span><span class="p">)))</span> <span class="o">>></span> <span class="mi">8</span>
<span class="nv">b = </span><span class="p">(</span><span class="mi">65535</span> <span class="o">-</span> <span class="p">(</span><span class="nx">y</span> <span class="o">*</span> <span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="nx">k</span><span class="p">)</span> <span class="o">+</span> <span class="p">(</span><span class="nx">k</span> <span class="o"><<</span> <span class="mi">8</span><span class="p">)))</span> <span class="o">>></span> <span class="mi">8</span>
<span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="p">{</span><span class="nv">r: </span><span class="nx">r</span><span class="p">,</span> <span class="nv">g: </span><span class="nx">g</span><span class="p">,</span> <span class="nv">b: </span><span class="nx">b</span><span class="p">},</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span>
<span class="vi">@rgbToColor: </span><span class="nf">(r, g, b) -></span> <span class="nx">@argbToColor</span><span class="p">(</span><span class="mi">255</span><span class="p">,</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span>
<span class="vi">@argbToColor: </span><span class="nf">(a, r, g, b) -></span>
<span class="p">(</span><span class="nx">alpha</span> <span class="o"><<</span> <span class="mi">24</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="nx">r</span> <span class="o"><<</span> <span class="mi">16</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="nx">g</span> <span class="o"><<</span> <span class="mi">8</span><span class="p">)</span> <span class="o">|</span> <span class="nx">b</span>
<span class="vi">@hsbToColor: </span><span class="nf">(h, s, b) -></span> <span class="nx">@ahsbToColor</span> <span class="mi">255</span><span class="p">,</span> <span class="nx">h</span><span class="p">,</span> <span class="nx">s</span><span class="p">,</span> <span class="nx">b</span>
<span class="vi">@ahsbToColor: </span><span class="nf">(alpha, hue, saturation, brightness) -></span>
<span class="k">if</span> <span class="nx">saturation</span> <span class="o">is</span> <span class="mi">0</span>
<span class="nv">b = g = r = </span><span class="mi">255</span> <span class="o">*</span> <span class="nx">brightness</span>
<span class="k">else</span>
<span class="k">if</span> <span class="nx">brightness</span> <span class="o"><=</span> <span class="mf">0.5</span>
<span class="nv">m2 = </span><span class="nx">brightness</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">+</span> <span class="nx">saturation</span><span class="p">)</span>
<span class="k">else</span>
<span class="nv">m2 = </span><span class="nx">brightness</span> <span class="o">+</span> <span class="nx">saturation</span> <span class="o">-</span> <span class="nx">brightness</span> <span class="o">*</span> <span class="nx">saturation</span>
<span class="nv">m1 = </span><span class="mi">2</span> <span class="o">*</span> <span class="nx">brightness</span> <span class="o">-</span> <span class="nx">m2</span>
<span class="nv">r = </span><span class="nx">@hueToColor</span> <span class="nx">hue</span> <span class="o">+</span> <span class="mi">120</span><span class="p">,</span> <span class="nx">m1</span><span class="p">,</span> <span class="nx">m2</span>
<span class="nv">g = </span><span class="nx">@hueToColor</span> <span class="nx">hue</span><span class="p">,</span> <span class="nx">m1</span><span class="p">,</span> <span class="nx">m2</span>
<span class="nv">b = </span><span class="nx">@hueToColor</span> <span class="nx">hue</span> <span class="o">-</span> <span class="mi">120</span><span class="p">,</span> <span class="nx">m1</span><span class="p">,</span> <span class="nx">m2</span>
<span class="nx">@argbToColor</span> <span class="nx">alpha</span><span class="p">,</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span>
<span class="vi">@hueToColor: </span><span class="nf">(hue, m1, m2) -></span>
<span class="nx">hue</span> <span class="o">%=</span> <span class="mi">360</span>
<span class="k">if</span> <span class="nx">hue</span> <span class="o"><</span> <span class="mi">60</span>
<span class="nv">v = </span><span class="nx">m1</span> <span class="o">+</span> <span class="p">(</span><span class="nx">m2</span> <span class="o">-</span> <span class="nx">m1</span><span class="p">)</span> <span class="o">*</span> <span class="nx">hue</span> <span class="err">/ 60</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">hue</span> <span class="o"><</span> <span class="mi">180</span>
<span class="nv">v = </span><span class="nx">m2</span>
<span class="k">else</span> <span class="k">if</span> <span class="nx">hue</span> <span class="o"><</span> <span class="mi">240</span>
<span class="nv">v = </span><span class="nx">m1</span> <span class="o">+</span> <span class="p">(</span><span class="nx">m2</span> <span class="o">-</span> <span class="nx">m1</span><span class="p">)</span> <span class="o">*</span> <span class="p">(</span><span class="mi">240</span> <span class="o">-</span> <span class="nx">hue</span><span class="p">)</span> <span class="o">/</span> <span class="mi">60</span>
<span class="k">else</span>
<span class="nv">v = </span><span class="nx">m1</span>
<span class="nx">v</span> <span class="o">*</span> <span class="mi">255</span>
<span class="vi">@cmykToColor: </span><span class="nf">(cyan, magenta, yellow, black) -></span>
<span class="nv">r = </span><span class="mi">1</span> <span class="o">-</span> <span class="p">(</span><span class="nx">cyan</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="nx">black</span><span class="p">)</span> <span class="o">+</span> <span class="nx">black</span><span class="p">)</span> <span class="o">*</span> <span class="mi">255</span>
<span class="nv">g = </span><span class="mi">1</span> <span class="o">-</span> <span class="p">(</span><span class="nx">magenta</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span> <span class="o">-</span> <span class="nx">black</span><span class="p">)</span> <span class="o">+</span> <span class="nx">black</span><span class="p">)</span> <span class="o">*</span> <span class="mi">255</span>
<span class="nv">b = </span><span class="mi">1</span> <span class="o">-</span> <span class="p">(</span><span class="nx">yellow</span> <span class="o">*</span> <span class="p">(</span><span class="mi">1</span><span class="o">-</span> <span class="nx">black</span><span class="p">)</span> <span class="o">+</span> <span class="nx">black</span><span class="p">)</span> <span class="o">*</span> <span class="mi">255</span>
<span class="nv">r = </span><span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="nx">r</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span>
<span class="nv">g = </span><span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="nx">g</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span>
<span class="nv">b = </span><span class="nx">Util</span><span class="p">.</span><span class="nx">clamp</span> <span class="nx">b</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">255</span>
<span class="nx">@rgbToColor</span> <span class="nx">r</span><span class="p">,</span> <span class="nx">g</span><span class="p">,</span> <span class="nx">b</span>
<span class="vi">@labToColor: </span><span class="nf">(l, a, b) -></span> <span class="nx">@alabToColor</span><span class="p">(</span><span class="mi">255</span><span class="p">,</span> <span class="nx">l</span><span class="p">,</span> <span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span>
<span class="vi">@alabToColor: </span><span class="nf">(alpha, lightness, a, b) -></span>
<span class="nv">xyz = </span><span class="nx">@labToXYZ</span><span class="p">(</span><span class="nx">lightness</span><span class="p">,</span> <span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span>
<span class="nx">@axyzToColor</span> <span class="nx">alpha</span><span class="p">,</span> <span class="nx">xyz</span><span class="p">.</span><span class="nx">x</span><span class="p">,</span> <span class="nx">xyz</span><span class="p">.</span><span class="nx">y</span><span class="p">,</span> <span class="nx">xyz</span><span class="p">.</span><span class="nx">z</span>
<span class="vi">@axyzToColor: </span><span class="nf">(alpha, x, y, z) -></span>
<span class="nv">rgb = </span><span class="nx">@xyzToRGB</span><span class="p">(</span><span class="nx">x</span><span class="p">,</span> <span class="nx">y</span><span class="p">,</span> <span class="nx">z</span><span class="p">)</span>
<span class="nx">@argbToColor</span> <span class="nx">alpha</span><span class="p">,</span> <span class="nx">rgb</span><span class="p">.</span><span class="nx">r</span><span class="p">,</span> <span class="nx">rgb</span><span class="p">.</span><span class="nx">g</span><span class="p">,</span> <span class="nx">rgb</span><span class="p">.</span><span class="nx">b</span>
<span class="vi">@colorSpaceToARGB: </span><span class="nf">(colorSpace, colorComponent) -></span>
<span class="k">switch</span> <span class="nx">colorSpace</span>
<span class="k">when</span> <span class="mi">0</span>
<span class="nv">dstColor = </span><span class="nx">@rgbToColor</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
<span class="nx">colorComponent</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
<span class="k">when</span> <span class="mi">1</span>
<span class="nv">dstColor = </span><span class="nx">@hsbToColor</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
<span class="nx">colorComponent</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">/</span> <span class="mf">100.0</span><span class="p">,</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">/</span> <span class="mf">100.0</span>
<span class="k">when</span> <span class="mi">2</span>
<span class="nv">dstColor = </span><span class="nx">@cmykToColor</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">/</span> <span class="mf">100.0</span><span class="p">,</span>
<span class="nx">colorComponent</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">/</span> <span class="mf">100.0</span><span class="p">,</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">/</span> <span class="mf">100.0</span><span class="p">,</span>
<span class="nx">colorComponent</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">/</span> <span class="mf">100.0</span>
<span class="k">when</span> <span class="mi">7</span>
<span class="nv">dstColor = </span><span class="nx">@labToColor</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
<span class="nx">colorComponent</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">colorComponent</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
<span class="k">else</span>
<span class="nv">dstColor = </span><span class="mh">0x00FFFFFF</span>
<span class="nx">dstColor</span>
</pre></div> </td> </tr> </tbody> </table> </div> </body> </html>
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