Gmagick::modulateimage
Control the brightness, saturation, and hue
Description
public Gmagick Gmagick::modulateimage(float $brightness, float $saturation, float $hue)
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.
Parameters
-
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)
Return Values
The Gmagick object.
Errors/Exceptions
Throws an
GmagickException on error.