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fabric.Image.filters.Brightness.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: Brightness</title>
<script src="scripts/prettify/prettify.js"> </script>
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<div id="main">
<h1 class="page-title">Class: Brightness</h1>
<section>
<header>
<h2>
<span class="ancestors"><a href="fabric.html">fabric</a><a href="fabric.Image.html">.Image</a><a href="fabric.Image.filters.html">.filters</a>.</span>Brightness</h2>
</header>
<article>
<div class="container-overview">
<h4 class="name" id="Brightness"><span class="type-signature"></span>new Brightness<span class="signature">()</span><span class="type-signature"></span></h4>
<div class="description">
Brightness filter class
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19949">line 19949</a>
</li></ul></dd>
<dt class="tag-see">See:</dt>
<dd class="tag-see">
<ul>
<li><a href="fabric.Image.filters.Brightness.html#initialize">fabric.Image.filters.Brightness#initialize</a> for constructor definition</li>
<li><a href="http://fabricjs.com/image-filters">ImageFilters demo</a></li>
</ul>
</dd>
</dl>
<h5>Example</h5>
<pre class="prettyprint"><code>var filter = new fabric.Image.filters.Brightness({
brightness: 200
});
object.filters.push(filter);
object.applyFilters();</code></pre>
</div>
<h3 class="subsection-title">Extends</h3>
<ul>
<li><a href="fabric.Image.filters.BaseFilter.html">fabric.Image.filters.BaseFilter</a></li>
</ul>
<h3 class="subsection-title">Members</h3>
<h4 class="name" id="brightness"><span class="type-signature"></span>brightness<span class="type-signature"></span></h4>
<div class="description">
Brightness value, from -1 to 1.
translated to -255 to 255 for 2d
0.0039215686 is the part of 1 that get translated to 1 in 2d
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19992">line 19992</a>
</li></ul></dd>
</dl>
<h4 class="name" id="fragmentSource"><span class="type-signature"></span>fragmentSource<span class="type-signature"></span></h4>
<div class="description">
Fragment source for the brightness program
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19975">line 19975</a>
</li></ul></dd>
</dl>
<h4 class="name" id="mainParameter"><span class="type-signature"></span>mainParameter<span class="type-signature"></span></h4>
<div class="description">
Describe the property that is the filter parameter
</div>
<dl class="details">
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy">
<li>brightness</li>
</ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19999">line 19999</a>
</li></ul></dd>
</dl>
<h4 class="name" id="type"><span class="type-signature"></span>type<span class="type-signature"></span></h4>
<div class="description">
Filter type
</div>
<dl class="details">
<dt class="tag-overrides">Overrides:</dt>
<dd class="tag-overrides"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#type">fabric.Image.filters.BaseFilter#type</a>
</li></ul></dd>
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy">
<li>Brightness</li>
</ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19970">line 19970</a>
</li></ul></dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<div class="inherited">
<h4 class="name" id="applyTo"><span class="type-signature"></span>applyTo<span class="signature">(options)</span><span class="type-signature"></span></h4>
<div class="description">
Apply this filter to the input image data provided.
Determines whether to use WebGL or Canvas2D based on the options.webgl flag.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">
<h6>Properties</h6>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>passes</code></td>
<td class="type">
<span class="param-type">Number</span>
</td>
<td class="description last">The number of filters remaining to be executed</td>
</tr>
<tr>
<td class="name"><code>webgl</code></td>
<td class="type">
<span class="param-type">Boolean</span>
</td>
<td class="description last">Whether to use webgl to render the filter.</td>
</tr>
<tr>
<td class="name"><code>sourceTexture</code></td>
<td class="type">
<span class="param-type">WebGLTexture</span>
</td>
<td class="description last">The texture setup as the source to be filtered.</td>
</tr>
<tr>
<td class="name"><code>targetTexture</code></td>
<td class="type">
<span class="param-type">WebGLTexture</span>
</td>
<td class="description last">The texture where filtered output should be drawn.</td>
</tr>
<tr>
<td class="name"><code>context</code></td>
<td class="type">
<span class="param-type">WebGLRenderingContext</span>
</td>
<td class="description last">The GL context used for rendering.</td>
</tr>
<tr>
<td class="name"><code>programCache</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">A map of compiled shader programs, keyed by filter type.</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#applyTo">fabric.Image.filters.BaseFilter#applyTo</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19647">line 19647</a>
</li></ul></dd>
</dl>
</div>
<h4 class="name" id="applyTo2d"><span class="type-signature"></span>applyTo2d<span class="signature">(options)</span><span class="type-signature"></span></h4>
<div class="description">
Apply the Brightness operation to a Uint8ClampedArray representing the pixels of an image.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">
<h6>Properties</h6>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>imageData</code></td>
<td class="type">
<span class="param-type">ImageData</span>
</td>
<td class="description last">The Uint8ClampedArray to be filtered.</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line20007">line 20007</a>
</li></ul></dd>
</dl>
<div class="inherited">
<h4 class="name" id="applyToWebGL"><span class="type-signature"></span>applyToWebGL<span class="signature">(options)</span><span class="type-signature"></span></h4>
<div class="description">
Apply this filter using webgl.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">
<h6>Properties</h6>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>