Imagick::setImageOpacity

(PECL imagick 2.0.0)

Imagick::setImageOpacity — Sets the image opacity level

Opis

Imagick::setImageOpacity ( float $opacity ) : bool

Sets the image to the specified opacity level. Ta metoda jest dostępna, jeśli rozszerzenie Imagick zostało skompilowane z ImageMagick w wersji 6.3.1 lub nowszej. This method operates on all channels, which means that for example opacity value of 0.5 will set all transparent areas to partially opaque. To add transparency to areas that are not already transparent use Imagick::evaluateImage()

Parametry

opacity: The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.

Zwracane wartości

Zwraca TRUE w przypadku sukcesu.

Przykłady

Przykład #1 A Imagick::setImageOpacity() example

An example of using Imagick::setImageOpacity()


<?php
/* Create the object */
$image = new Imagick('source.png');

/* Set the opacity */
$image->setImageOpacity(0.7);

/* output the image */
header('Content-type: image/png');
echo $image;

?>

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User Contributed Notes 1 note

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hola at rafaeltovar dot info ¶

4 years ago


This function is deprecated from last stable version (3.4.4 - 2019-05-02) of PECL Imagick extension. 

More info: http://pecl.php.net/package-changelog.php?package=imagick&release=3.4.4

"setImageAlpha" is the new alternative function, but doesn't work with ImageMagick < 7.

More info: https://github.com/avalanche123/Imagine/issues/715

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