Php/docs/imagick.transparentpaintimage
Imagick::transparentPaintImage
(PECL imagick 2 >= 2.3.0, PECL imagick 3)
Imagick::transparentPaintImage — Paints pixels transparent
Description
public Imagick::transparentPaintImage
( mixed $target
, float $alpha
, float $fuzz
, bool $invert
) : bool
Paints pixels matching the target color transparent. This method is available if Imagick has been compiled against ImageMagick version 6.3.8 or newer.
Parameters
target
- The target color to paint
alpha
- The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.
fuzz
- The amount of fuzz. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color.
invert
- If
TRUE
paints any pixel that does not match the target color.
Return Values
Returns TRUE
on success.
Examples
Example #1 Imagick::transparentPaintImage()
<?phpfunction transparentPaintImage($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();}?>