ImagickPixelIterator::resetIterator
(PECL imagick 2, PECL imagick 3)
ImagickPixelIterator::resetIterator — Resets the pixel iterator
Beschreibung
Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Argumente zur Verfügung.
Resets the pixel iterator. Use it in conjunction with ImagickPixelIterator::getNextIteratorRow() to iterate over all the pixels in a pixel container.
Rückgabewerte
Liefert true
bei Erfolg.
Beispiele
Beispiel #1 ImagickPixelIterator::resetIterator()
<?php
function resetIterator($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
$imageIterator = $imagick->getPixelIterator();
/* Loop trough pixel rows */
foreach ($imageIterator as $pixels) {
/* Loop through the pixels in the row (columns) */
foreach ($pixels as $column => $pixel) {
/** @var $pixel \ImagickPixel */
if ($column % 2) {
/* Make every second pixel 25% red*/
$pixel->setColorValue(\Imagick::COLOR_RED, 64);
}
}
/* Sync the iterator, this is important to do on each iteration */
$imageIterator->syncIterator();
}
$imageIterator->resetiterator();
/* Loop trough pixel rows */
foreach ($imageIterator as $pixels) {
/* Loop through the pixels in the row (columns) */
foreach ($pixels as $column => $pixel) {
/** @var $pixel \ImagickPixel */
if ($column % 3) {
$pixel->setColorValue(\Imagick::COLOR_BLUE, 64); /* Make every second pixel a little blue*/
//$pixel->setColor("rgba(0, 0, 128, 0)"); /* Paint every second pixel black*/
}
}
$imageIterator->syncIterator(); /* Sync the iterator, this is important to do on each iteration */
}
$imageIterator->clear();
header("Content-Type: image/jpg");
echo $imagick;
}
?>