PHP | GmagickDraw setstrokeopacity()函数
GmagickDraw::setstrokeopacity()函数是PHP中的一个内置函数,用于指定描边对象轮廓的不透明度。不透明度的值介于 0 和 1 之间。
句法:
public GmagickDraw::setstrokeopacity( $stroke_opacity ) : GmagickDraw
参数:此函数接受单个参数$stroke_opacity ,该参数用于将描边不透明度的值保存为浮点类型。
返回值:此函数在成功时返回 GmagickDraw 对象。
下面的程序说明了PHP中的 GmagickDraw::setstrokeopacity()函数:
方案一:
php
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 gmagick object
$image = new \Gmagick();
// 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();
?>
php
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 Gmagick object
$image = new \Gmagick();
// 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();
?>
输出:
方案二:
PHP
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 Gmagick object
$image = new \Gmagick();
// 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();
?>
输出:
参考: http: PHP。 PHP