<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Resets the pixel iterator</title>
</head>
<body><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="imagickpixeliterator.newpixelregioniterator.html">ImagickPixelIterator::newPixelRegionIterator</a></div>
<div class="next" style="text-align: right; float: right;"><a href="imagickpixeliterator.setiteratorfirstrow.html">ImagickPixelIterator::setIteratorFirstRow</a></div>
<div class="up"><a href="class.imagickpixeliterator.html">ImagickPixelIterator</a></div>
<div class="home"><a href="index.html">PHP Manual</a></div>
</div><hr /><div id="imagickpixeliterator.resetiterator" class="refentry">
<div class="refnamediv">
<h1 class="refname">ImagickPixelIterator::resetIterator</h1>
<p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">ImagickPixelIterator::resetIterator</span> — <span class="dc-title">Resets the pixel iterator</span></p>
</div>
<div class="refsect1 description" id="refsect1-imagickpixeliterator.resetiterator-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>ImagickPixelIterator::resetIterator</strong></span>
( <span class="methodparam">void</span>
)</div>
<div class="warning"><strong class="warning">Warning</strong><p class="simpara">This function is
currently not documented; only its argument list is available.
</p></div>
<p class="para">
Resets the pixel iterator. Use it in conjunction with
ImagickPixelIterator::getNextIteratorRow() to iterate over all the pixels
in a pixel container.
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-imagickpixeliterator.resetiterator-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success.
</p>
</div>
<div class="refsect1 examples" id="refsect1-imagickpixeliterator.resetiterator-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4130">
<p><strong>Example #1 <span class="function"><strong>ImagickPixelIterator::resetIterator()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">resetIterator</span><span style="color: #007700">(</span><span style="color: #0000BB">$imagePath</span><span style="color: #007700">) {<br /><br /> </span><span style="color: #0000BB">$imagick </span><span style="color: #007700">= new \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">(</span><span style="color: #0000BB">realpath</span><span style="color: #007700">(</span><span style="color: #0000BB">$imagePath</span><span style="color: #007700">));<br /><br /> </span><span style="color: #0000BB">$imageIterator </span><span style="color: #007700">= </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">-></span><span style="color: #0000BB">getPixelIterator</span><span style="color: #007700">();<br /><br /> </span><span style="color: #FF8000">/* Loop trough pixel rows */<br /> </span><span style="color: #007700">foreach (</span><span style="color: #0000BB">$imageIterator </span><span style="color: #007700">as </span><span style="color: #0000BB">$pixels</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/* Loop through the pixels in the row (columns) */<br /> </span><span style="color: #007700">foreach (</span><span style="color: #0000BB">$pixels </span><span style="color: #007700">as </span><span style="color: #0000BB">$column </span><span style="color: #007700">=> </span><span style="color: #0000BB">$pixel</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/** @var $pixel \ImagickPixel */<br /> </span><span style="color: #007700">if (</span><span style="color: #0000BB">$column </span><span style="color: #007700">% </span><span style="color: #0000BB">2</span><span style="color: #007700">) {<br /><br /> </span><span style="color: #FF8000">/* Make every second pixel 25% red*/<br /> </span><span style="color: #0000BB">$pixel</span><span style="color: #007700">-></span><span style="color: #0000BB">setColorValue</span><span style="color: #007700">(\</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COLOR_RED</span><span style="color: #007700">, </span><span style="color: #0000BB">64</span><span style="color: #007700">); <br /> }<br /> }<br /> </span><span style="color: #FF8000">/* Sync the iterator, this is important to do on each iteration */<br /> </span><span style="color: #0000BB">$imageIterator</span><span style="color: #007700">-></span><span style="color: #0000BB">syncIterator</span><span style="color: #007700">();<br /> }<br /><br /> </span><span style="color: #0000BB">$imageIterator</span><span style="color: #007700">-></span><span style="color: #0000BB">resetiterator</span><span style="color: #007700">();<br /><br /> </span><span style="color: #FF8000">/* Loop trough pixel rows */<br /> </span><span style="color: #007700">foreach (</span><span style="color: #0000BB">$imageIterator </span><span style="color: #007700">as </span><span style="color: #0000BB">$pixels</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/* Loop through the pixels in the row (columns) */<br /> </span><span style="color: #007700">foreach (</span><span style="color: #0000BB">$pixels </span><span style="color: #007700">as </span><span style="color: #0000BB">$column </span><span style="color: #007700">=> </span><span style="color: #0000BB">$pixel</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">/** @var $pixel \ImagickPixel */<br /> </span><span style="color: #007700">if (</span><span style="color: #0000BB">$column </span><span style="color: #007700">% </span><span style="color: #0000BB">3</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$pixel</span><span style="color: #007700">-></span><span style="color: #0000BB">setColorValue</span><span style="color: #007700">(\</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">::</span><span style="color: #0000BB">COLOR_BLUE</span><span style="color: #007700">, </span><span style="color: #0000BB">64</span><span style="color: #007700">); </span><span style="color: #FF8000">/* Make every second pixel a little blue*/<br /> //$pixel->setColor("rgba(0, 0, 128, 0)"); /* Paint every second pixel black*/<br /> </span><span style="color: #007700">}<br /> }<br /> </span><span style="color: #0000BB">$imageIterator</span><span style="color: #007700">-></span><span style="color: #0000BB">syncIterator</span><span style="color: #007700">(); </span><span style="color: #FF8000">/* Sync the iterator, this is important to do on each iteration */<br /> </span><span style="color: #007700">}<br /><br /> </span><span style="color: #0000BB">$imageIterator</span><span style="color: #007700">-></span><span style="color: #0000BB">clear</span><span style="color: #007700">();<br /><br /> </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/jpg"</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$imagick</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
</div><hr /><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="imagickpixeliterator.newpixelregioniterator.html">ImagickPixelIterator::newPixelRegionIterator</a></div>
<div class="next" style="text-align: right; float: right;"><a href="imagickpixeliterator.setiteratorfirstrow.html">ImagickPixelIterator::setIteratorFirstRow</a></div>
<div class="up"><a href="class.imagickpixeliterator.html">ImagickPixelIterator</a></div>
<div class="home"><a href="index.html">PHP Manual</a></div>
</div></body></html>
