Gmagick::modulateimage

(PECL gmagick >= Unknown)

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

说明

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。