package Thread;

import java.awt.geom.*;

/**

*

* @author Administrator

*

*/

public class Ball {

private static final int XSIZE=15;

private static final int YSIZE=15;

private double x=0;

private double y=0;

private double dx=1;

private double dy=1;

public void move(Rectangle2D bounds){

x+=dx;

y+=dy;

if(x<bounds.getMinX()){

x=bounds.getMinX();

dx=-dx;

}

if(x+XSIZE>=bounds.getMaxX()){

x=bounds.getMaxX()-XSIZE;

dx=-dx;

}

if(y<bounds.getMinY()){

y=bounds.getMinY();

dy=-dy;

}

if(y+YSIZE>=bounds.getMaxY()){

y=bounds.getMaxY()-YSIZE;

dy=-dy;

}

}

public Ellipse2D getShape()

{

return new Ellipse2D.Double(x,y,XSIZE,YSIZE);

}

}