Gmagick::modulateimage

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.

The percent change in brighness (-100 thru +100).

The percent change in saturation (-100 thru +100)

The percent change in hue (-100 thru +100)

The Gmagick object on success

Throws an GmagickException on error.