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Imagick::coalesceImages

(PECL imagick 2.0.0)

Imagick::coalesceImagesComposites a set of images

Descrição

Imagick Imagick::coalesceImages ( void )

Composites a set of images while respecting any page offsets and disposal methods. GIF, MIFF, and MNG animation sequences typically start with an image background and each subsequent image varies in size and offset. Returns a new Imagick object where each image in the sequence is the same size as the first and composited with the next image in the sequence.

Valor Retornado

Returns a new Imagick object on success.

Erros

Throws ImagickException on error.

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User Contributed Notes 3 notes

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2
ktr
1 year ago
resize and/or crop an animated GIF

<?php
$image
= new Imagick($file_src);

$image = $image->coalesceImages();

foreach (
$image as $frame) {
 
$frame->cropImage($crop_w, $crop_h, $crop_x, $crop_y);
 
$frame->thumbnailImage($size_w, $size_h);
 
$frame->setImagePage($size_w, $size_h, 0, 0);
}

$image = $image->deconstructImages();
$image->writeImages($file_dst, true);
?>
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0
dikirill
1 year ago
I tried examples below, and couldn't make them work. And found that version of my php-imagick extension is 3.1.0RC1, and looks like it's buggy in function "writeImages", downgrade to 3.0.1 helped me.
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-1
vikomic at gmail dot com
3 years ago
Here goes an exaple how to resize GIF-s.

<?php
$imagick
= new Imagick("original.gif");

$format = $imagick->getImageFormat();
if (
$format == 'GIF') {
 
$imagick = $imagick->coalesceImages();
  do {
    
$imagick->resizeImage(120, 120, Imagick::FILTER_BOX, 1);
  } while (
$imagick->nextImage());
 
$imagick = $imagick->deconstructImages();
 
$imagick->writeImages('new_120x120.gif', true);

 
// can be added some more gifs
 
$imagick = $imagick->coalesceImages();
  do {
    
$imagick->resizeImage(100, 100, Imagick::FILTER_BOX, 1);
  } while (
$imagick->nextImage());
 
$imagick = $imagick->deconstructImages();
 
$imagick->writeImages('new_100x100.gif', true);
}

$imagick->clear();
$imagick->destroy();
?>

You can use any resize method (resizeImage) with this example.

This example works fine with *imagick module version 2.2.1-dev*, but doesn't work correctly with *imagick module version 3.0.1*.
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