mirror of
https://github.com/php/doc-pt_br.git
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111 lines
3.0 KiB
XML
111 lines
3.0 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- EN-Revision: fa0c88f1e36a3f28b4fcee0b2d1e188b54e0c44b Maintainer: leonardolara Status: ready --><!-- CREDITS: leonardolara -->
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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>Redefine o iterador de pixel</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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Redefine o iterador de pixel. Use-o em conjunto com
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ImagickPixelIterator::getNextIteratorRow() para iterar sobre todos os pixels
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em um contêiner de pixels.
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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>Exemplo de <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 = $imagick->getPixelIterator();
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/* Itera obre linhas de pixels */
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foreach ($imageIterator as $pixels) {
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/* Itera sobre os pixels na linha (colunas) */
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foreach ($pixels as $column => $pixel) {
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/** @var $pixel \ImagickPixel */
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if ($column % 2) {
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/* Torna cada segundo pixel vermelho 25% */
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$pixel->setColorValue(\Imagick::COLOR_RED, 64);
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}
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}
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/* Sincroniza o iterador, importante fazer isso a cada iteração */
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$imageIterator->syncIterator();
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}
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$imageIterator->resetiterator();
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/* Itera obre linhas de pixels */
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foreach ($imageIterator as $pixels) {
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/* Itera sobre os pixels na linha (colunas) */
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foreach ($pixels as $column => $pixel) {
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/** @var $pixel \ImagickPixel */
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if ($column % 3) {
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$pixel->setColorValue(\Imagick::COLOR_BLUE, 64); /* Torna cada segundo pixel um pouco azul */
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//$pixel->setColor("rgba(0, 0, 128, 0)"); /* Pinta cada segundo pixel de preto */
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}
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}
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$imageIterator->syncIterator(); /* Sincroniza o iterador, importante fazer isso a cada iteração */
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}
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$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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