Imagick::negateImage
(PECL imagick 2.0.0)
Imagick::negateImage — Negates the colors in the reference image
Description
bool Imagick::negateImage ( bool $gray [, int $channel = Imagick::CHANNEL_ALL ] )Negates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated.
Parameters
gray
Whether to only negate grayscale pixels within the image.
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.
Return Values
Returns TRUE on success.
Errors/Exceptions
Throws ImagickException on error.
Examples
Example #1 Imagick::negateImage()
<?php
function?negateImage($imagePath,?$grayOnly,?$channel)?{
????$imagick?=?new?\Imagick(realpath($imagePath));
????$imagick->negateImage($grayOnly,?$channel);
????header("Content-Type:?image/jpg");
????echo?$imagick->getImageBlob();
}
?>← Imagick::motionBlurImage
Imagick::newImage →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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