mirror of
https://github.com/sigmasternchen/php-doc-en
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fa0c88f1e3
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@351855 c90b9560-bf6c-de11-be94-00142212c4b1
110 lines
2.9 KiB
XML
110 lines
2.9 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="imagickpixeliterator.resetiterator">
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<refnamediv>
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<refname>ImagickPixelIterator::resetIterator</refname>
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<refpurpose>Resets the pixel iterator</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<modifier>public</modifier> <type>bool</type><methodname>ImagickPixelIterator::resetIterator</methodname>
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<void/>
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</methodsynopsis>
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&warn.undocumented.func;
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<para>
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Resets the pixel iterator. Use it in conjunction with
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ImagickPixelIterator::getNextIteratorRow() to iterate over all the pixels
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in a pixel container.
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&imagick.return.success;
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title> <function>ImagickPixelIterator::resetIterator</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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function resetIterator($imagePath) {
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$imagick = new \Imagick(realpath($imagePath));
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$imageIterator = $imagick->getPixelIterator();
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/* Loop trough pixel rows */
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foreach ($imageIterator as $pixels) {
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/* Loop through the pixels in the row (columns) */
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foreach ($pixels as $column => $pixel) {
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/** @var $pixel \ImagickPixel */
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if ($column % 2) {
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/* Make every second pixel 25% red*/
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$pixel->setColorValue(\Imagick::COLOR_RED, 64);
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}
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}
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/* Sync the iterator, this is important to do on each iteration */
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$imageIterator->syncIterator();
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}
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$imageIterator->resetiterator();
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/* Loop trough pixel rows */
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foreach ($imageIterator as $pixels) {
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/* Loop through the pixels in the row (columns) */
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foreach ($pixels as $column => $pixel) {
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/** @var $pixel \ImagickPixel */
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if ($column % 3) {
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$pixel->setColorValue(\Imagick::COLOR_BLUE, 64); /* Make every second pixel a little blue*/
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//$pixel->setColor("rgba(0, 0, 128, 0)"); /* Paint every second pixel black*/
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}
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}
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$imageIterator->syncIterator(); /* Sync the iterator, this is important to do on each iteration */
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}
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$imageIterator->clear();
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header("Content-Type: image/jpg");
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echo $imagick;
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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