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fabric.Image.filters.Convolute.html
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fabric.Image.filters.Convolute.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: Convolute</title>
<script src="scripts/prettify/prettify.js"> </script>
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<div id="main">
<h1 class="page-title">Class: Convolute</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>Convolute</h2>
</header>
<article>
<div class="container-overview">
<h4 class="name" id="Convolute"><span class="type-signature"></span>new Convolute<span class="signature">()</span><span class="type-signature"></span></h4>
<div class="description">
Adapted from <a href="http://www.html5rocks.com/en/tutorials/canvas/imagefilters/">html5rocks article</a>
</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#line18490">line 18490</a>
</li></ul></dd>
<dt class="tag-see">See:</dt>
<dd class="tag-see">
<ul>
<li><a href="fabric.Image.filters.Convolute.html#initialize">fabric.Image.filters.Convolute#initialize</a> for constructor definition</li>
<li><a href="http://fabricjs.com/image-filters">ImageFilters demo</a></li>
</ul>
</dd>
</dl>
<h5>Examples</h5>
<p class="code-caption">Sharpen filter</p>
<pre class="prettyprint"><code>var filter = new fabric.Image.filters.Convolute({
matrix: [ 0, -1, 0,
-1, 5, -1,
0, -1, 0 ]
});
object.filters.push(filter);
object.applyFilters(canvas.renderAll.bind(canvas));</code></pre>
<p class="code-caption">Blur filter</p>
<pre class="prettyprint"><code>var filter = new fabric.Image.filters.Convolute({
matrix: [ 1/9, 1/9, 1/9,
1/9, 1/9, 1/9,
1/9, 1/9, 1/9 ]
});
object.filters.push(filter);
object.applyFilters(canvas.renderAll.bind(canvas));</code></pre>
<p class="code-caption">Emboss filter</p>
<pre class="prettyprint"><code>var filter = new fabric.Image.filters.Convolute({
matrix: [ 1, 1, 1,
1, 0.7, -1,
-1, -1, -1 ]
});
object.filters.push(filter);
object.applyFilters(canvas.renderAll.bind(canvas));</code></pre>
<p class="code-caption">Emboss filter with opaqueness</p>
<pre class="prettyprint"><code>var filter = new fabric.Image.filters.Convolute({
opaque: true,
matrix: [ 1, 1, 1,
1, 0.7, -1,
-1, -1, -1 ]
});
object.filters.push(filter);
object.applyFilters(canvas.renderAll.bind(canvas));</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="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>Convolute</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#line18538">line 18538</a>
</li></ul></dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<h4 class="name" id="applyTo"><span class="type-signature"></span>applyTo<span class="signature">(canvasEl)</span><span class="type-signature"></span></h4>
<div class="description">
Applies filter to canvas element
</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>canvasEl</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">Canvas element to apply filter to</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#line18562">line 18562</a>
</li></ul></dd>
</dl>
<h4 class="name" id="initialize"><span class="type-signature"></span>initialize<span class="signature">(options<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>
<div class="description">
Constructor
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</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="attributes">
<optional><br>
</td>
<td class="description last">Options object
<h6>Properties</h6>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>opaque</code></td>
<td class="type">
<span class="param-type">Boolean</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
false
</td>
<td class="description last">Opaque value (true/false)</td>
</tr>
<tr>
<td class="name"><code>matrix</code></td>
<td class="type">
<span class="param-type"><a href="Array.html">Array</a></span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last">Filter matrix</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-overrides">Overrides:</dt>
<dd class="tag-overrides"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#initialize">fabric.Image.filters.BaseFilter#initialize</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#line18547">line 18547</a>
</li></ul></dd>
</dl>
<div class="inherited">
<h4 class="name" id="setOptions"><span class="type-signature"></span>setOptions<span class="signature">(options<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>
<div class="description">
Sets filter's properties from options
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</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="attributes">
<optional><br>
</td>
<td class="description last">Options object</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#setOptions">fabric.Image.filters.BaseFilter#setOptions</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#line18374">line 18374</a>
</li></ul></dd>
</dl>
</div>
<div class="inherited">
<h4 class="name" id="toJSON"><span class="type-signature"></span>toJSON<span class="signature">()</span><span class="type-signature"> → {Object}</span></h4>
<div class="description">
Returns a JSON representation of an instance
</div>
<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#toJSON">fabric.Image.filters.BaseFilter#toJSON</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#line18392">line 18392</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
JSON
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Object</span>
</dd>
</dl>
</div>
<h4 class="name" id="toObject"><span class="type-signature"></span>toObject<span class="signature">()</span><span class="type-signature"> → {Object}</span></h4>
<div class="description">
Returns object representation of an instance
</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#toObject">fabric.Image.filters.BaseFilter#toObject</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#line18620">line 18620</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
Object representation of an instance
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Object</span>