Imagick::paintTransparentImage

(PECL imagick 2.0.0)

Imagick::paintTransparentImage — Changes any pixel that matches color with the color defined by fill

bool Imagick::paintTransparentImage ( mixed $target , float $alpha , float $fuzz )

Changes any pixel that matches color with the color defined by fill.

target: Change this target color to specified opacity value within the image.
alpha: The level of transparency: 1.0 is fully opaque and 0.0 is fully transparent.
fuzz: The fuzz member of image defines how much tolerance is acceptable to consider two colors as the same.

成功时返回 TRUE。

错误时抛出 ImagickException。

版本	说明
2.1.0	Now allows a string representing the color as the first parameter. Previous versions allow only an ImagickPixel object.