ImagickDraw::setStrokeOpacity()函數是PHP中的內置函數,用於指定筆觸對象輪廓的不透明度。不透明度的值介於0到1之間。
用法:
bool ImagickDraw::setStrokeOpacity( $stroke_opacity )
參數:該函數接受單個參數$stroke_opacity,該參數用於將筆觸不透明度的值保留為float類型。
返回值:該函數不返回任何值。
以下示例程序旨在說明PHP中的ImagickDraw::setStrokeOpacity()函數:
程序1:
<?php
// require_once('path/vendor/autoload.php');
// Create an ImagickDraw object to draw into.
$draw = new \ImagickDraw();
// Set the stroke color
$draw->setStrokeColor('Green');
// Set the filled color
$draw->setFillColor('Red');
// Set the stroke opacity
$draw->setStrokeOpacity(0.5);
// Set the stroke width
$draw->setStrokeWidth(9);
// Draw the rectangle
$draw->rectangle(40, 30, 200, 260);
// Create new imagick object
$image = new \Imagick();
// Create new image of given size
$image->newImage(240, 300, 'White');
// Set the image format
$image->setImageFormat("png");
// Draw the image
$image->drawImage($draw);
header("Content-Type: image/png");
// Display the output image
echo $image->getImageBlob();
?>
輸出:
程序2:
<?php
// require_once('path/vendor/autoload.php');
// Create an ImagickDraw object to draw into.
$draw = new \ImagickDraw();
// Set the Stroke Color
$draw->setStrokeColor('Black');
// Set the Stroke Opacity
$draw->setStrokeOpacity(0.6);
// Set the Stroke Width
$draw->setStrokeWidth(4);
//Set the filled color
$draw->setFillColor('lightgreen');
$points = [
['x' => 50 * 6, 'y' => 10 * 5],
['x' => 20 * 7, 'y' => 30 * 5],
['x' => 60 * 8, 'y' => 50 * 5],
['x' => 70 * 3, 'y' => 15 * 5],
];
// Draw the polygon
$draw->polygon($points);
// Create new Imagick object
$image = new \Imagick();
// Set the image dimensions
$image->newImage(500, 300, 'white');
// Set the image format
$image->setImageFormat("png");
// Draw the image
$image->drawImage($draw);
header("Content-Type: image/png");
// Display the image
echo $image->getImageBlob();
?>
輸出:
參考: http://php.net/manual/en/imagickdraw.setstrokeopacity.php
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注:本文由純淨天空篩選整理自sarthak_ishu11大神的英文原創作品 PHP | ImagickDraw setStrokeOpacity() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。