Php/docs/imagickpixeliterator.resetiterator
ImagickPixelIterator::resetIterator
(PECL imagick 2, PECL imagick 3)
ImagickPixelIterator::resetIterator — Resets the pixel iterator
Description
public ImagickPixelIterator::resetIterator ( ) : bool
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()
<?phpfunction 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;}?>
