note 102255 added to function.imagick-distortimage

Slide image with shadow using distortImage

<?php

$slideValue = 150;

// Create new object 
$im = new Imagick("grnhrs.jpg");

// Resize 
$im->thumbnailImage(500,400);

// Set the image format to png 
$im->setImageFormat('png');

//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, 10, 5, 5 );

// Fill background area with transparent for image
//VIRTUALPIXELMETHOD_TRANSPARENT
$im->setImageVirtualPixelMethod(Imagick::VIRTUALPIXELMETHOD_ TRANSPARENT);

// Activate matte 
$im->setImageMatte(true);

//Control points for the distortion 
$controlPoints = array( 0, 0,
						$slideValue, 0,
                        
						0, $im->getImageHeight(),
						0, $im->getImageHeight(),
                        
						$im->getImageWidth(), 0,
						$im->getImageWidth(), 0,
                        
						$im->getImageWidth(), $im->getImageHeight(),
						$im->getImageWidth()-$slideValue, $im->getImageHeight());
                        
// Perform the distortion 
$im->distortImage(Imagick::DISTORTION_PERSPECTIVEPROJECTION, $controlPoints, true);

// Perform the distortion in shadow image
$shadow->distortImage(Imagick::DISTORTION_PERSPECTIVEPROJECTION, $controlPoints, true);

// Imagick::shadowImage only creates the shadow.
// That is why the original image is composited over it 
$shadow->compositeImage( $im, Imagick::COMPOSITE_OVER, 0, 0 );

/* Ouput the image */
header("Content-Type: image/png");
echo $shadow;

?>
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Manual Page -- http://www.php.net/manual/en/function.imagick-distortimage.php
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