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Imagick::setImageOpacity

(PECL imagick 2, PECL imagick 3)

Imagick::setImageOpacity — Sets the image opacity level

Avviso

This function has been DEPRECATED as of Imagick 3.4.4. Relying on this function is highly discouraged.

Descrizione

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

Sets the image to the specified opacity level. Questo metodo è disponibile se Imagick è stato compilato con ImageMagick versione 6.3.1 o successive. 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()

Elenco dei parametri

opacity

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

Valori restituiti

Restituisce true in caso di successo.

Esempi

Example #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;

?>