import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Polygon;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;


public class kolos8 extends JFrame{

    MyComponent komponent;
    int MAXN=80;
    int n=0;
    int alfa=61;
    int dalfa=1;
    Timer timer;
    int [] xtab=new int[MAXN];
    int [] ytab=new int[MAXN];
    int D=10;
    class MyComponent extends JComponent{

        @Override
        protected void paintComponent(Graphics g) {
            int w=getWidth();
            int h=getHeight();
            int x=0,y=0;
            int r=((w<h)?w:h)*9/20;
            int x0=w/2;
            int y0=h/2;

            int xsE=(int)Math.round(x0+r/2*Math.cos(Math.toRadians(alfa)));
            int ysE=(int)Math.round(y0+r/2*Math.sin(Math.toRadians(alfa)));
            g.drawArc(xsE-r/2, ysE-r/2, r,r, 180-alfa, -180);

            int xsW=(int)Math.round(x0-r/2*Math.cos(Math.toRadians(alfa)));
            int ysW=(int)Math.round(y0-r/2*Math.sin(Math.toRadians(alfa)));
            g.drawArc(xsW-r/2, ysW-r/2, r,r, 180-alfa, -180);

            int xp=xKart(x0,r,Math.toRadians(alfa));
            int yp=yKart(y0,r,Math.toRadians(alfa));
            int xd=xKart(x0,r,Math.toRadians(alfa+90));
            int yd=yKart(y0,r,Math.toRadians(alfa+90));
            int xc=xKart(x0,r,Math.toRadians(alfa+180));
            int yc=yKart(y0,r,Math.toRadians(alfa+180));
            g.drawLine(xp, yp, xd, yd);
            g.drawLine(xd, yd, xc, yc);
            int b=(int)Math.round(r*Math.sqrt(2.0));
            int c=(int)Math.round(r/2*Math.PI/2.0);
            int obw=2*b+2*c;
            int nc=MAXN*c/obw;
            int nb=(MAXN-2*nc)/2;
            if(n<nc){
                double kat=Math.PI*n/nc+Math.toRadians(alfa);
                x=(int)Math.round(xsE-r/2*Math.cos(kat));
                y=(int)Math.round(ysE-r/2*Math.sin(kat));
            }

            else if(n<nc+nb){
                x=xp+(xd-xp)*(n-nc)/nb;
                y=yp+(yd-yp)*(n-nc)/nb;
            }else if(n<nc+2*nb){
                x=xd+(xc-xd)*(n-nc-nb)/nb;
                y=yd+(yc-yd)*(n-nc-nb)/nb;
            }else {
                double kat=0+Math.PI*(n-nc-nb-nb)/nc+Math.toRadians(alfa);
                x=(int)Math.round(xsW-r/2*Math.cos(kat));
                y=(int)Math.round(ysW-r/2*Math.sin(kat));
            }

            g.setColor(Color.RED);
            g.fillOval(x-6, y-6, 12, 12);
            g.setColor(Color.BLACK);


            super.paintComponent(g);
        }

        private int yKart(int y0, int r, double kat) {
            return (int)Math.round(y0+r*Math.sin(kat));
        }

        private int xKart(int x0, int r, double kat) {
            return (int)Math.round(x0+r*Math.cos(kat));
        }

    }
    public kolos8(String string) {
        super(string);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Toolkit kit=Toolkit.getDefaultToolkit();
        Dimension d=kit.getScreenSize();
        setBounds(d.width/4, d.height/4, d.width/2, d.height/2);
        add(komponent=new MyComponent());
        timer=new Timer(20,new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                n++;
                //if(alfa>35) zm=-1;
                //if(alfa<0) zm=1;
                //alfa=alfa+zm;
                alfa++;
                if(n>=MAXN)
                    n-=MAXN;
                komponent.repaint();
            }
        });
        timer.start();
        setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new kolos8("Animek 8");
            }
        });
    }

}