import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class Pentagon extends Canvas implements ComponentListener{
	private BufferedImage bi = null;
	private Graphics g = null;
	
	private int sek = 5;
	private int kordusi = 10;
	private double nihe = 0.2;
	private double jaak = 1 - nihe;

	private Color foreground = Color.white;
	private Color background = Color.black;
	
	Pentagon(){
		super();	
		addComponentListener(this);
	}
	
	public void paint(Graphics g){
		if(bi != null){
			g.drawImage(bi, 0, 0, this);
		}
	}
	
	public void update(Graphics g){
		paint(g);
	}
	
	public void updateBufImage(){
		int[] x = new int[sek];
		int[] y = new int[sek];
		int[] ax = new int[sek];
		int[] ay = new int[sek];
		double kraad = 2*Math.PI/sek;
		double z = 0;
		
		double a = getSize().width/2;
		double b = getSize().height/2;
		
		double r = Math.min(a, b) - 10;
		
		for(int c = 0; c<sek; c++){
	       x[c] = (int)( r * Math.cos(z) + a);
	       y[c] = (int)( r * Math.sin(z) + b);
	       z+=kraad;
		}
		
		if(g != null){
			g.setColor(background);
			g.fillRect(0, 0, getSize().width, getSize().height);
			g.setColor(foreground);
			for(int m=0; m<kordusi; m++){
				for(int n=0; n<sek; n++){
					g.drawLine(x[n], y[n], x[(n+1)%sek], y[(n+1)%sek]);
					ax[n]=(int)(x[n]*jaak+x[(n+1)%sek]*nihe);
					ay[n]=(int)(y[n]*jaak+y[(n+1)%sek]*nihe);
				}
				x=ax;
				y=ay;
			}//kordusi
		}
	}
	/**
	 * Some setters and getters
	 **/
	
	public int getCornerCount(){
		return(sek);
	}
	public void setCornerCount(int val){ 
		sek = val;
		updateBufImage();
		repaint();
	}
	
	public int getRepeateCount(){
		return(kordusi);
	}
	public void setRepeatCount(int rep){
		kordusi = rep;
		updateBufImage();
		repaint();
	}
	
	public double getRotation(){
		return(nihe);
	}
	public void setRotation(double offset){
		nihe = offset;
		jaak = 1 - offset;
		updateBufImage();
		repaint();
	}
	
	public Color getForeground(){
		return(foreground);
	}
	
	public Color getBackground(){
		return(background);
	}
	
	public void setForeground(Color fg){
		foreground = fg;
	}
	
	public void setBackground(Color bg){
		background = bg;
	}

	/**
	 * Componentlistener
	 **/
   public void componentResized(ComponentEvent e){
		bi = new BufferedImage(getSize().width, getSize().height, BufferedImage.TYPE_INT_RGB);
		g = bi.getGraphics();
		updateBufImage();
   }

   public void componentHidden(ComponentEvent e){}
   public void componentShown(ComponentEvent e){}
   public void componentMoved(ComponentEvent e){}
	
	/**
	 * main
	 **/
	public static void main(String args[]){
		JFrame f = new JFrame("Viisnurk");
		f.setSize(300, 400);
		f.addWindowListener(new WindowAdapter(){
				public void windowClosing(WindowEvent e){
					System.exit(0);
				}
			});
		Pentagon p = new Pentagon();
		Container c = f.getContentPane();
		c.setLayout( new BorderLayout() );
		c.add(p, BorderLayout.CENTER);

		JToolBar tb = new JToolBar();
		JSlider rotSl = new JSlider(JSlider.HORIZONTAL, 0, 100, (int)(p.getRotation()*100));
		rotSl.addChangeListener(new RotationCL(p));
		JSlider corSl = new JSlider(JSlider.HORIZONTAL, 3, 24, p.getCornerCount());
		corSl.addChangeListener(new CornerCL(p));
		JSlider repSl = new JSlider(JSlider.HORIZONTAL, 0, 200, p.getRepeateCount());
		repSl.addChangeListener(new RepeatCL(p));
		tb.add(rotSl);
		tb.add(corSl);
		tb.add(repSl);
		
		tb.setFloatable(true);
		c.add(tb, BorderLayout.NORTH);
		
		f.show();
	}
}
class RotationCL implements ChangeListener {
	Pentagon p;

	RotationCL(Pentagon k){
		super();
		p=k;
	}

	public void stateChanged(ChangeEvent e) {
		double val =((JSlider)e.getSource()).getValue();
		p.setRotation( val/100 );
		//System.out.println(val);
   }
}

class CornerCL implements ChangeListener {
	Pentagon p;
	CornerCL(Pentagon k){
		super();
		p=k;
	}

	public void stateChanged(ChangeEvent e) {
		p.setCornerCount( ((JSlider)e.getSource()).getValue() );
   }
}

class RepeatCL implements ChangeListener {
	Pentagon p;
	RepeatCL(Pentagon k){
		super();
		p=k;
	}

	public void stateChanged(ChangeEvent e) {
		p.setRepeatCount( ((JSlider)e.getSource()).getValue() );
   }
}