(PECL imagick 2.0.0)
Imagick::cycleColormapImage — Displaces an image's colormap
$displace
)Displaces an image's colormap by a given number of positions. If you cycle the colormap a number of times you can produce a psychedelic effect.
displace
The amount to displace the colormap.
成功时返回 TRUE .
错误时抛出 ImagickException .