Description:
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I am doing some picture composition with imagick in PHP. I translate the image before I do the composition. Depending on the amount of translation, I can get the image or the script fails. If I translate +1000 in the horizontal direction I get a valid image. If I translate -1000 units, the script fails and I get a zero size result.

I am using Imagick 2.1.1, Ubuntu 7.10, PHP Version 5.2.3, Apache 2.2.4, ImageMagick 6.2.4.

Any ideas would be appreciated.

As to why I want to translate by -1000, I am doing some map alignment affine transforms and they can be quite complex - this is just a test case.

Regards,

TimSC

Reproduce code:
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<?php 
	//phpinfo();

	//Create a blank blue image
	$image = new Imagick();
	$col = new ImagickPixel();
	$col->setColor  ("blue");
	$image->newImage( 640, 480, $col );
	$image->setImageFormat( 'png' );
	
	//Create a small green image
	$col->setColor  ("green");
	$image2 = new Imagick();
	$image2->newImage( 100, 100, $col );
	$image2->setImageFormat( 'png' );
	
	//Composit green image onto blue image
	$ImagickDraw = new ImagickDraw();
	$ImagickDraw->translate(-1000.0,0.0); //Translation step
	$ImagickDraw->composite(imagick::COMPOSITE_OVER,0,0,-1,-1,$image2);
	$image->drawImage( $ImagickDraw );

	//Output image
	header( "Content-Type: image/{$image->getImageFormat()}" );
	echo $image->getImageBlob( );
?>

Expected result:
----------------
Ideally the code example would return a valid image. Any composite that has been translated outside the image bounds should not be displayed.

Or if that is not possible, I would expect Imagick to throw an exception if there was a problem rather than just silently failing.

Actual result:
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Script appears to stop running when I call ImageickDraw::drawImage(...). A zero size file is returned to the browser.