Resets the pixel iterator

ImagickPixelIterator::newPixelRegionIterator
ImagickPixelIterator::setIteratorFirstRow
ImagickPixelIterator
PHP Manual

# ImagickPixelIterator::resetIterator

(PECL imagick 2.0.0)

ImagickPixelIterator::resetIterator — Resets the pixel iterator

### Description

bool ImagickPixelIterator::resetIterator ( void )
Warning

This function is currently not documented; only its argument list is available.

Resets the pixel iterator. Use it in conjunction with ImagickPixelIterator::getNextIteratorRow() to iterate over all the pixels in a pixel container.

### Return Values

Returns `TRUE` on success.

### Examples

Example #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;
}
?>`

ImagickPixelIterator::newPixelRegionIterator
ImagickPixelIterator::setIteratorFirstRow
ImagickPixelIterator
PHP Manual