Changes the transparency value of a color

# Imagick::matteFloodfillImage

(PECL imagick 2, PECL imagick 3)

Imagick::matteFloodfillImage — Changes the transparency value of a color

警告

此函数在 Imagick 3.4.4 中被 废弃，强烈建议不要应用此函数。

### 说明

public function 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。

### 更新日志

版本 | 说明
--- | ---
PECL imagick 2.1.0 | Now allows a string representing the color as the third parameter. Previous versions allow only an ImagickPixel object.

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