Randomly displaces each pixel in a block

# Gmagick::spreadimage

(PECL gmagick >= Unknown)

Gmagick::spreadimage — Randomly displaces each pixel in a block

### 说明

public function Gmagick::spreadimage(float `$radius`): Gmagick

Special effects method that randomly displaces each pixel in a block defined by the radius parameter.

### 参数

`radius`
  Choose a random pixel in a neighborhood of this extent.

### 返回值

The Gmagick object.

### 错误／异常

错误时抛出 GmagickException。

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