Imagick::matteFloodfillImage()

(PECL imagick 2.0.0)

Changes the transparency value of a color

说明

Imagick::matteFloodfillImage(float $alpha,float $fuzz, mixed $bordercolor,int $x,int $y): bool

Changes the transparency value of any pixel that matches target and is an immediate neighbor. If the method FillToBorderMethod is specified, the transparency value is changed for any neighbor pixel that does not match the bordercolor member of image.

参数

$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.

$bordercolor

An ImagickPixel object or string representing the border color.

$x

The starting x coordinate of the operation.

$y

The starting y coordinate of the operation.

返回值

成功时返回TRUE。

错误／异常

错误时抛出 ImagickException。

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