Gmagick::modulateimage
(PECL gmagick >= Unknown)
Gmagick::modulateimage — Control the brightness, saturation, and hue
説明
public void 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.
パラメータ
-
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)
返り値
The Gmagick object on success
エラー / 例外
エラー時に GmagickException をスローします。
