#define	SW$VERSION	01.00
#define	SW$RELEASE	10-Dec-2003 12:00

import java.awt.*;
import java.awt.image.*;
import java.awt.image.renderable.*;
import javax.media.jai.*;

public class ImageInverter {

    private static final String SW_VERSION ="SW$VERSION";
    private static final String SW_RELEASE_DATE ="SW$RELEASE";

    /** Creates a new instance of ImageInverter */
    private ImageInverter() {}

    
    /** inverts an image
     * @param image image to invert
     * @return the inverted image.
     */    
    public static Image invert(Image image) {
	// convert the image into a buffered Image.
	BufferedImage image2 = new BufferedImage(image.getWidth(null),
			       image.getHeight(null),
			       BufferedImage.TYPE_INT_RGB);
	Graphics g = image2.getGraphics();
	g.drawImage(image, 0, 0, null);
	g.dispose();
	
	// invert it.
	ParameterBlock pb = new ParameterBlock();
	pb.addSource(image2);
	return JAI.create("invert", pb).getAsBufferedImage();
	}

    }