ImagickPixel::getColor

(PECL imagick 2, PECL imagick 3)

ImagickPixel::getColor — Returns the color

说明

public ImagickPixel::getColor(int $normalized = 0): array

Returns the color described by the ImagickPixel object, as an array. If the color has an opacity channel set, this is provided as a fourth value in the list.

参数

normalized

Normalize the color values. Possible values are 0, 1 or 2.

List of possible values for normalized
normalized Description
0 The RGB values are returned as ints in the range 0 to 255 (inclusive.) The alpha value is returned as int and is either 0 or 1.
1 The RGBA values are returned as floats in the range 0 to 1 (inclusive.)
2 The RGBA values are returned as ints in the range 0 to 255 (inclusive.)

返回值

An array of channel values. Throws ImagickPixelException on error.

范例

示例 #1 Basic Imagick::getColor() usage

<?php

//Create an ImagickPixel with the predefined color 'brown'
$color = new ImagickPixel('brown');

//Set the color to have an alpha of 25%
$color->setColorValue(Imagick::COLOR_ALPHA, 64 / 256.0);

$colorInfo = $color->getColor();

echo "Standard values".PHP_EOL;
print_r($colorInfo);

$colorInfo = $color->getColor(1);

echo "Normalized values:".PHP_EOL;
print_r($colorInfo);

?>

以上例程会输出：

Standard values
Array
(
    [r] => 165
    [g] => 42
    [b] => 42
    [a] => 0
)
Normalized values:
Array
(
    [r] => 0.64705882352941
    [g] => 0.16470588235294
    [b] => 0.16470588235294
    [a] => 0.25000381475547
)