ImagickPixel
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ImagickPixel::getColorValue

(PECL imagick 2.0.0)

ImagickPixel::getColorValueGets the normalized value of the provided color channel

说明

float ImagickPixel::getColorValue ( int $color )
Warning

本函数还未编写文档,仅有参数列表。

Retrieves the value of the color channel specified, as a floating-point number between 0 and 1.

参数

color

The channel to check, specified as one of the Imagick channel constants.

返回值

The value of the channel, as a normalized floating-point number, throwing ImagickPixelException on error.


ImagickPixel
PHP 手册