Imagick::transparentPaintImage
(No version information available, might only be in Git)
Imagick::transparentPaintImage — Paints pixels transparent
Description
bool Imagick::transparentPaintImage ( mixed $target , float $alpha , float $fuzz , bool $invert )Paints pixels matching the target color transparent. This method is available if Imagick has been compiled against ImageMagick version 6.3.8 or newer.
Parameters
target
The target color to paint
alpha
The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.
fuzz
The amount of fuzz. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color.
invert
If TRUE paints any pixel that does not match the target color.
Return Values
Returns TRUE on success.
Examples
Example #1 Imagick::transparentPaintImage()
<?php
function?transparentPaintImage($color,?$alpha,?$fuzz)?{
????$imagick?=?new?\Imagick(realpath("images/BlueScreen.jpg"));
????//Need?to?be?in?a?format?that?supports?transparency
????$imagick->setimageformat('png');
????$imagick->transparentPaintImage(
????????$color,?$alpha,?$fuzz?*?\Imagick::getQuantum(),?false
????);
????//Not?required,?but?helps?tidy?up?left?over?pixels
????$imagick->despeckleimage();
????header("Content-Type:?image/png");
????echo?$imagick->getImageBlob();
}
?>← Imagick::transformImageColorspace
Imagick::transposeImage →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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