import java.applet.Applet;
import java.awt.*;

public class Farn extends Applet {

    public void init(){
        setBackground(Color.BLACK);
    }
    
    public void paint(Graphics g) {
        setForeground(Color.WHITE);
        
        zeichneFarn(g, 150, 50, 250, 150);
    }
    
    public void zeichneFarn(Graphics g, int x0, int y0, int x1, int y1) {
        double x = x1 - x0;
        double y = y1 - y0;
        double laenge = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
        
        //System.out.println(laenge);
        
        if (laenge <= 1) {
            return;
        }
        
        g.drawLine(x0, y0, x1, y1);
        
        double winkel = Math.atan2(y,x);
        
        double winkel10 = winkel - Math.PI / 18;
        double winkel50 = winkel + 5 * Math.PI / 18;
        double winkel60 = winkel - Math.PI / 3;
        
        int x2 = x1 + (int) (0.5*laenge*Math.cos(winkel50));
        int x3 = x1 + (int) (0.8*laenge*Math.cos(winkel10));
        int x4 = x1 + (int) (0.5*laenge*Math.cos(winkel60));
        
        int y2 = y1 + (int) (0.5*laenge*Math.sin(winkel50));
        int y3 = y1 + (int) (0.8*laenge*Math.sin(winkel10));
        int y4 = y1 + (int) (0.5*laenge*Math.sin(winkel60));

        zeichneFarn(g, x1, y1, x2, y2);
        zeichneFarn(g, x1, y1, x3, y3);
        zeichneFarn(g, x1, y1, x4, y4);
    }
    
}