ImagickPixelIterator::__construct
(PECL imagick 2.0.0)
ImagickPixelIterator::__construct — The ImagickPixelIterator constructor
说明
ImagickPixelIterator::__construct (
Imagick
$wand )
Warning
本函数还未编写文档，仅有参数列表。
The ImagickPixelIterator constructor
返回值
成功时返回 TRUE。
范例
Example #1 ImagickPixelIterator::construct()
<?php
function construct($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;
}
?>
