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Cantor.java
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/*
* Author: Havard Rast Blok
* E-mail: 
* Web : www.rememberjava.com
*/
import java.awt.*;
import javax.swing.*;
/*
* Draw recursive circles
*/
public class Cantor extends JFrame
{
public Cantor()
{
setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
setSize(400, 400);
show();
}
public void paint( Graphics g )
{
g.setColor( Color.white );
g.fillRect( 0, 0, getWidth(), getHeight() );
g.setColor( Color.black );
drawCantor(200, 200, 150, Math.PI/2, 7, g);
}
public void drawCantor(int x, int y, int r, double a, int times, Graphics g)
{
System.out.println("x="+x+", y="+y+", r="+r+", times="+times);
if(times>0)
{
drawMidCircle(x, y, r, g);
drawCantor(x+r/2, y, r/2, 0, times-1, g);
drawCantor(x-r/2, y, r/2, 0, times-1, g);
}
}
public void drawMidCircle(int x, int y, int r, Graphics g)
{
g.drawOval(x-r, y-r, 2*r, 2*r);
}
public static void main( String args[] )
{
new Cantor();
}
}
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