ImagickPixel
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ImagickPixel::setHSL

(PECL imagick 2.0.0)

ImagickPixel::setHSLSets the normalized HSL color

说明

bool ImagickPixel::setHSL ( float $hue , float $saturation , float $luminosity )
Warning

本函数还未编写文档,仅有参数列表。

Sets the color described by the ImagickPixel object using normalized values for hue, saturation and luminosity.

参数

hue

The normalized value for hue, described as a fractional arc (between 0 and 1) of the hue circle, where the zero value is red.

saturation

The normalized value for saturation, with 1 as full saturation.

luminosity

The normalized value for luminosity, on a scale from black at 0 to white at 1, with the full HS value at 0.5 luminosity.

返回值

成功时返回 TRUE

注释

Note:

Available with ImageMagick library version 6.2.9 and higher.


ImagickPixel
PHP 手册