package jpp;

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 niewiem extends JFrame{

	MyComponent komponent;
	int MAXN=400;
	int n=0;
	Timer timer;
	
	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;
			
			
			g.drawArc(x0-R,y0-R , 2*R, 2*R, 0	, 270);
			g.drawLine(x0, y0, x0+R, y0);
			g.drawLine(x0, y0, x0, y0+R);
			double kat;
			int kolo = (int)Math.round(Math.PI*R/2.0);
			int obw=2*R+3*kolo;
			int nb=MAXN*R/obw;
			int na=(MAXN-2*nb)/3;
			if(n<nb) {
				x=x0+R-R*n/nb;
				y=y0;
				
			}else if(n<2*nb) {
				x=x0;
				y=y0+R*(n-nb)/nb;
			
			}else {
				kat = Math.PI/2.0+Math.PI/2.0*(n-2*nb)/na;
				x=(int)Math.round(x0+R*Math.cos(kat));
				y=(int)Math.round(y0+R*Math.sin(kat));
			}
			
			
			
			g.fillOval(x-6,y-6, 12, 12);
			super.paintComponent(g);
		}
		
	}
	public niewiem(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(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 niewiem("Animek 2");
			}
		});
	}

}