(PECL imagick 2.0.0)
Resets the pixel iterator
bool ImagickPixelIterator::resetIterator ( void )
Resets the pixel iterator. Use it in conjunction with ImagickPixelIterator::getNextIteratorRow() to iterate over all the pixels in a pixel container.
Returns:
Returns TRUE
on success.
This function is currently not documented; only its argument list is available.
Examples:
ImagickPixelIterator::resetIterator()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | <?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 ; } ?> |
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