public function rotate( $angle, $type = NULL )
	{
		if( !$this->sourceUri )
			throw new RuntimeException( 'No source image set' );

#		if( function_exists( 'imageantialias' ) )
#			imageantialias( $this->target, TRUE );

		$this->target	= imagerotate( $this->source, $angle, 0 );
		if( $this->targetUri )
			return $this->saveImage( $type );
		return TRUE;
	}