Imagick::shadowImage()

(PECL imagick 2.0.0)

Simulates an image shadow

说明

Imagick::shadowImage(float $opacity,float $sigma,int $x,int $y): bool

Simulates an image shadow.

参数

$opacity

$sigma

$x

$y

返回值

成功时返回TRUE。

范例

Example #1 Imagick::shadowImage()

<?php
function shadowImage($imagePath) {
    $imagick = new \Imagick(realpath($imagePath));
    $imagick->shadowImage(0.4, 10, 50, 5);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}
?>

<?php
/* Read the image into the object */
$im = new Imagick( 'a.jpg' );
$im->setImageFormat("png");
 
/* Make the image a little smaller, maintain aspect ratio */
$im->thumbnailImage( 200, null );
 
/* Clone the current object */
$shadow = $im->clone();
 
/* Set image background color to black
    (this is the color of the shadow) */
$shadow->setImageBackgroundColor( new ImagickPixel( 'black' ) );
 
/* Create the shadow */
$shadow->shadowImage( 80, 3, 5, 5 );
 
/* Imagick::shadowImage only creates the shadow.
    That is why the original image is composited over it */
$shadow->compositeImage( $im, Imagick::COMPOSITE_OVER, 0, 0 );
 
/* Display the image */
header( "Content-Type: image/jpeg" );
echo $shadow;
?>