import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class Pie extends Applet {
    Image image,image2;
    Dimension size;
    
    public void init() {
        size=getSize();
        image=createImage(size.width,size.height);
        image2=createImage(size.width,size.height);
        addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent e) {
                Graphics g2=image2.getGraphics();
                g2.drawImage(image,0,0,size.width,size.height/2,
                    0,0,size.width/2,size.height,Pie.this);
                g2.drawImage(image,0,size.height/2,size.width,size.height,
                    size.width/2,0,size.width,size.height,Pie.this);
                g2.dispose();
                Graphics g=image.getGraphics();
                g.drawImage(image2,0,0,Pie.this);
                g.dispose();
                repaint();
            }
        });
    }
    
    public void start() {
        Image image3=getImage(getCodeBase(),getParameter("filename"));
        MediaTracker mt=new MediaTracker(this);
        mt.addImage(image3,0);
        try {
            mt.waitForAll();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        Graphics g=image.getGraphics();
        g.drawImage(image3,0,0,size.width,size.height,this);
        g.dispose();
    }
	
    public void paint (Graphics g) {
        g.drawImage(image,0,0,this);
    }
}