Imagick::negateImage
(PECL imagick 2.0.0)
Imagick::negateImage — Negates the colors in the reference image
Opis
Imagick::negateImage
( bool
$gray
[, int $channel = Imagick::CHANNEL_DEFAULT
] ) : boolNegates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.
Parametry
-
gray -
Whether to only negate grayscale pixels within the image.
-
channel -
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Zwracane wartości
Zwraca TRUE w przypadku sukcesu.
Błędy/Wyjątki
Zgłasza wyjątek ImagickException w przypadku błędu.
Przykłady
Przykład #1 Imagick::negateImage()
<?php
function negateImage($imagePath, $grayOnly, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->negateImage($grayOnly, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
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