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  • Gmagick::modulateimage()

    (PECL gmagick >= Unknown)

    Control the brightness, saturation, and hue

    说明

    publicGmagick::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 on success

    错误/异常

    错误时抛出GmagickException