ImagickPixelIterator::getNextIteratorRow

(PECL imagick 2.0.0)

Returns the next row of the pixel iterator

array ImagickPixelIterator::getNextIteratorRow ( void )

Returns the next row as an array of pixel wands from the pixel iterator.

Returns:

Returns the next row as an array of ImagickPixel objects, throwing ImagickPixelIteratorException on error.

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

Examples:

ImagickPixelIterator::getNextIteratorRow()

<?php
function getNextIteratorRow($imagePath) {
    $imagick = new \Imagick(realpath($imagePath));
    $imageIterator = $imagick->getPixelIterator();
 
    $count = 0;
    while ($pixels = $imageIterator->getNextIteratorRow()) {
        if (($count % 3) == 0) {
            /* 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(); 
        }
 
        $count += 1;
    }
 
    header("Content-Type: image/jpg");
    echo $imagick;
}
 
?>

Links:

http://php.net/manual/en/imagickpixeliterator.getnextiteratorrow.php

doc_php

2025-01-10 15:47:30

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