(PECL imagick 2.0.0)
Imagick::vignetteImage — Adds vignette filter to the image
$blackPoint
, float $whitePoint
, int $x
, int $y
)Softens the edges of the image in vignette style. 此方法在Imagick基于ImageMagick 6.2.9以上版本编译时可用。
blackPoint
The black point.
whitePoint
The white point
x
X offset of the ellipse
y
Y offset of the ellipse
成功时返回 TRUE .