# Gmagick::modulateimage

(PECL gmagick >= Unknown)

Gmagick::modulateimage — Control the brightness, saturation, and hue

### 说明

public Gmagick::modulateimage(float `$brightness`, float `$saturation`, float `$hue`): Gmagick

Lets you control the brightness, saturation, and hue of an image. Hue is the percentage of absolute rotation from the current position. For example 50 results in a counter-clockwise rotation of 90 degrees, 150 results in a clockwise rotation of 90 degrees, with 0 and 200 both resulting in a rotation of 180 degrees.

### 参数

`brightness`
  The percent change in brighness (-100 thru +100).
`saturation`
  The percent change in saturation (-100 thru +100)
`hue`
  The percent change in hue (-100 thru +100)

### 返回值

The Gmagick object.

### 错误／异常

错误时抛出 GmagickException。

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