Imagick::setImageOpacity

(PECL imagick 2, PECL imagick 3)

Imagick::setImageOpacity — Sets the image opacity level

Aviso

Esta função tornou-se OBSOLETA a partir da Imagick 3.4.4. O uso desta função é fortemente desencorajado.

Descrição

public Imagick::setImageOpacity(float $opacity): bool

Sets the image to the specified opacity level. Este método estará disponível se a extensão Imagick tiver sido compilada com a ImageMagick versão 6.3.1 ou superior. 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()

Parâmetros

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

Valor Retornado

Retorna true em caso de sucesso.

Exemplos

Exemplo #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;

?>

＋add a note

User Contributed Notes 1 note

down

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

＋add a note