Imagick::negateImage
(PECL imagick 2, PECL imagick 3)
Imagick::negateImage — Negates the colors in the reference image
Descrierea
public Imagick::negateImage
( bool
$gray
, int $channel = Imagick::CHANNEL_DEFAULT
) : boolNegates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.
Parametri
-
gray -
Whether to only negate grayscale pixels within the image.
-
channel -
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Valorile întoarse
Întoarce true în caz de succes.
Erori/Excepții
Emite ImagickException în caz de eroare.
Exemple
Example #1 Imagick::negateImage()
<?php
function negateImage($imagePath, $grayOnly, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->negateImage($grayOnly, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
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