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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="imagickpixeliterator.construct">
<refnamediv>
<refname>ImagickPixelIterator::__construct</refname>
<refpurpose>The ImagickPixelIterator constructor</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <methodname>ImagickPixelIterator::__construct</methodname>
<methodparam><type>Imagick</type><parameter>wand</parameter></methodparam>
</methodsynopsis>
&warn.undocumented.func;
<para>
The ImagickPixelIterator constructor
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&imagick.return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title> <function>ImagickPixelIterator::construct</function></title>
<programlisting role="php">
<![CDATA[
<?php
function construct($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
$imageIterator = new \ImagickPixelIterator($imagick);
/* Loop through pixel rows */
foreach ($imageIterator as $pixels) {
/* Loop through the pixels in the row (columns) */
foreach ($pixels as $column => $pixel) {
/** @var $pixel \ImagickPixel */
if ($column % 2) {
/* Paint every second pixel black*/
$pixel->setColor("rgba(0, 0, 0, 0)");
}
}
/* Sync the iterator, this is important to do on each iteration */
$imageIterator->syncIterator();
}
header("Content-Type: image/jpg");
echo $imagick;
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
</refentry>
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sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
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sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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