Imagick::negateImage

(PECL imagick 2.0.0)

Imagick::negateImage — Negates the colors in the reference image

Descrierea

Imagick::negateImage ( bool $gray [, int $channel = Imagick::CHANNEL_DEFAULT ] ) : bool

Negates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.

Parametri

gray: Whether to only negate grayscale pixels within the image.
channel: Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

Valorile întoarse

Întoarce TRUE în caz de succes.

Erori/Excepții

Emite ImagickException în caz de eroare.

Exemple

Example #1 Imagick::negateImage()


<?php
function negateImage($imagePath, $grayOnly, $channel) {
    $imagick = new \Imagick(realpath($imagePath));
    $imagick->negateImage($grayOnly, $channel);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>