import java.applet.Applet;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseEvent;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.*;
import java.applet.*;
import java.lang.Math;

public class Test extends Applet implements MouseListener,
					     MouseMotionListener {
    Screen s=new Screen(300,0,0);
    int n=5,m=5,iterates=10;
    double x;
    Point P,Q;
    Transform A,B;
    // A and B generate the tiling
    boolean model=true;

    public void init() { 
        s.PoincareModel();
	reevaluate();
	addMouseMotionListener(this);
	addMouseListener(this);
    }

    void reevaluate(){ // heres some nice formulas
	try{
	    double m2=m, n2=n;
	    x=Math.sqrt(Math.cos((1/m2 - 1/n2)*Math.PI)*
			Math.cos((1/m2 + 1/n2)*Math.PI))/
		(Math.cos(Math.PI/m2)*Math.cos(Math.PI/n2));
	    Transform T=new Transform(x,0);
	    A=new Transform(2*Math.PI/n2);
	    Transform R=new Transform(-2*Math.PI/m2);
	    B=T.dot(R).dot(T);
	    P=new Point(x,0);
	    Q=A.dot(P);
	} catch (ArithmeticException e) {
	    // This should never happen
	}
    }

    void apply(Graphics g, Point P, Point Q, int num){
	s.drawLineSegment(g,P,Q);
	if (num>0){
	    apply(g,A.dot(P),A.dot(Q),num-1);
	    apply(g,B.dot(P),B.dot(Q),num-1);
	}	    
    }

    public void paint(Graphics g) {    
	s.clear(g);
	
	g.setColor(Color.black);
	apply(g,P,Q,iterates);
	
	drawMenu(g);
    }	  

    void drawMenu(Graphics g){

	g.setColor(Color.white);
	g.fillRect(530,3,60,12);
	g.setColor(Color.black);
	g.drawString("Model",535,13);
	if (model) {
	    g.setColor(Color.black);
	    g.fillRect(530,15,60,12);
	    g.setColor(Color.white);
	    g.drawString("Poincare",535,25);
	} else {
	    g.setColor(Color.black);
	    g.fillRect(530,15,60,12);
	    g.setColor(Color.white);
	    g.drawString("Klien",535,25);
	}

	g.setColor(Color.white);
	g.fillRect(10,3,60,24);
	g.setColor(Color.black);
	g.drawString("n-gons",15,13);
	g.drawString("n="+n+" ",25,25);
	g.fillRect(10,15,12,12);
	g.fillRect(58,15,12,12);
	g.setColor(Color.white);
	g.drawString("+",12,25);
	g.drawString("-",60,25);	

	g.setColor(Color.white);
	g.fillRect(10,33,60,24);
	g.setColor(Color.black);
	g.drawString("mult",15,43);
	g.drawString("m="+m+" ",25,55);
	g.fillRect(10,45,12,12);
	g.fillRect(58,45,12,12);
	g.setColor(Color.white);
	g.drawString("+",12,55);
	g.drawString("-",60,55);	

	g.setColor(Color.white);
	g.fillRect(10,63,60,24);
	g.setColor(Color.black);
	g.drawString("iterates",12,73);
	g.drawString("i="+iterates+" ",25,85);
	g.fillRect(10,75,12,12);
	g.fillRect(58,75,12,12);
	g.setColor(Color.white);
	g.drawString("+",12,85);
	g.drawString("-",60,85);	
    }
    
    void clickMenu(int x,int y){
	if ((x>=530)&&(x<=590)&&(y>=15)&&(y<=27)) {
	    model=(! model);
	    if (model)
		s.PoincareModel();
	    else
		s.KlienModel();
	    repaint();
	}
	if ((x>=10)&&(x<=22)&&(y>=15)&&(y<=27)) {
	    n=n+1;
	    reevaluate();
	    repaint();
	}
	if ((x>=58)&&(x<=70)&&(y>=15)&&(y<=27)) {
	    n=n-1;
	    reevaluate();
	    repaint();
	}
	if ((x>=10)&&(x<=22)&&(y>=45)&&(y<=57)) {
	    m=m+1;
	    reevaluate();
	    repaint();
	}
	if ((x>=58)&&(x<=70)&&(y>=45)&&(y<=57)) {
	    m=m-1;
	    reevaluate();
	    repaint();
	}
	if ((x>=10)&&(x<=22)&&(y>=75)&&(y<=87)) {
	    iterates=iterates+1;
	    repaint();
	}
	if ((x>=58)&&(x<=70)&&(y>=75)&&(y<=87)) {
	    iterates=iterates-1;
	    repaint();
	}
    }

    public void mousePressed(MouseEvent e) {
    }
    
    public void mouseDragged(MouseEvent e) {
    }
    
    public void mouseMoved(MouseEvent e) {
    }

    public void mouseReleased(MouseEvent e) {
    }

    public void mouseEntered(MouseEvent e) {
    }

    public void mouseExited(MouseEvent e) {
    }

    public void mouseClicked(MouseEvent e) {
	e.consume();
        clickMenu(e.getX(),e.getY());
    }

}