Imagick::getPixelIterator

(PECL imagick 2, PECL imagick 3)

Imagick::getPixelIteratorReturns a MagickPixelIterator

说明

public Imagick::getPixelIterator(): ImagickPixelIterator

Returns a MagickPixelIterator.

参数

此函数没有参数。

返回值

Returns an ImagickPixelIterator on success.

错误/异常

错误时抛出 ImagickException。

示例

示例 #1 Imagick::getPixelIterator()

<?php
function getPixelIterator($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
$imageIterator = $imagick->getPixelIterator();

foreach (
$imageIterator as $row => $pixels) { /* Loop through pixel rows */
foreach ($pixels as $column => $pixel) { /* Loop through the pixels in the row (columns) */
/** @var $pixel \ImagickPixel */
if ($column % 2) {
$pixel->setColor("rgba(0, 0, 0, 0)"); /* Paint every second pixel black*/
}
}
$imageIterator->syncIterator(); /* Sync the iterator, this is important to do on each iteration */
}

header("Content-Type: image/jpg");
echo
$imagick;
}

?>

add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top