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




public class test1 extends Applet {
    MotionCanvas I;
    Animator A;
    ControlCanvas C;

    public void init() {   
	A=new Animator();
	setBackground(Color.black);
	C=new ControlCanvas();
	C.setBackground(Color.black);
	MotionCanvas I=new MotionCanvas(A);  
	C=C.addMotionCanvas(I);
	C.resize(150,250);
	I.resize(150,150);
	I.setBackground(Color.black);
	A=A.addMotionCanvas(I);
	add(C);
	add(I);
	try {A.start();}
	catch(Exception e) {}
    }                                                  
}

   


class DBCanvas extends Canvas {
    
    public void update(Graphics g) {
        Graphics g2;
        Image offscreen = null;
        offscreen = createImage(size().width, size().height);
        g2 = offscreen.getGraphics();
        paint(g2);
        g.drawImage(offscreen, 0, 0, this);
	g2.dispose();
	offscreen.flush();
    }
}
 




class MotionCanvas extends DBCanvas {
    Animator A;
    int number,length;
    double mesh;
    MotionCanvas(Animator A) {
	this.A=A;
	number=25;
	mesh=0;
	length=75;
    }

    public void paint(Graphics gfx) {
      Graphics2D g=(Graphics2D) gfx;
      g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                         RenderingHints.VALUE_ANTIALIAS_ON);

	double ii=A.getCount(mesh);
	int pow=1;
	g.setColor(Color.white);
	for(int i=1;i<=number;++i) {
	double x=length*Math.cos(pow*2.0*Math.PI*ii);
	double y=length*Math.sin(pow*2.0*Math.PI*ii);
	pow=1+pow;
	g.drawLine(75,75,(int)(x+75),(int)(y+75));
	}
    }

  
}




class VSlider {
    int x,y,w,h;
    int pos;
    Color[] C;
    String S;
    VSlider(int x,int y,int w,int h,int pos,Color[] C,String S) {
	this.x=x;
	this.y=y;
	this.h=h;
	this.w=w;
	this.pos=pos;
	this.C=C;
	this.S=S; 
    }

    void render(Graphics g) {
	g.setColor(C[1]);
	g.fillRect(x,y,w,h);
	g.setColor(C[2]);
        g.drawRect(x,y,w,h);
	g.setColor(C[3]);
	g.drawRect(x+1,pos-1,w-2,2); 
        g.setColor(C[2]);    
        g.setFont(new Font("TimesRoman",Font.PLAIN,13));
	g.drawString(S,x,y+h+12);
    }

    int inside(Point p) {
	int test=0;
	if((p.x>x)&&(p.x<x+w)&&(p.y>y)&&(p.y<y+h)) test=1;
	return(test);
    }

    void redo(ControlCanvas C) {
	C.repaint(x,y,w,h);
    }

}









class ControlCanvas extends Canvas implements MouseListener {
    MotionCanvas I;
    VSlider V1,V2,V3;

    ControlCanvas() {
	addMouseListener(this);
	Color C[]=new Color[4];
	C[1]=Color.black;
	C[2]=Color.white;
	C[3]=Color.red;
	V1=new VSlider(3,10,17,170,100,C,"speed");
        V2=new VSlider(43,10,17,170,100,C,"# rays");

    }

    public void paint(Graphics g) {
	V1.render(g);
        V2.render(g);
        g.setColor(Color.red);  
        g.setFont(new Font("TimesRoman",Font.PLAIN,30));
        g.drawString("Rich: ",5,222);
        g.drawString("Applet 25",5,246);
    }

    ControlCanvas addMotionCanvas(MotionCanvas I) {
	ControlCanvas B=this;
	B.I=I;
	return(B);
    }

    public void mouseReleased(MouseEvent e) {}
    public void mousePressed(MouseEvent e) {}
    public void mouseEntered(MouseEvent e) {}
    public void mouseExited(MouseEvent e) {}
    public void mouseClicked(MouseEvent e) {
	e.consume();
	Point p=new Point();
	p.x=e.getX();
	p.y=e.getY();
	if(V1.inside(p)==1) {
           double mesh1,mesh2;
	    mesh1=I.A.getCount(0.0);
            I.A.speed=100*p.y;
            mesh2=I.A.getCount(0.0);
	    I.mesh=I.mesh+mesh1-mesh2;
	    V1.pos=p.y;
	    V1.redo(this);
	}   
        if(V2.inside(p)==1) {
	    I.number=p.y/4;
	    V2.pos=p.y;
	    V2.redo(this);
	}      

    }

}











class Animator extends Thread {
    private int count;
    MotionCanvas I;
    double speed;


    public void run() {
	count=0;
	speed=10000.0;
	while(true) {
	    count=count+1;
	    I.repaint();
	    try {sleep(10);}
	    catch(Exception e) {}
	}
    }

    Animator addMotionCanvas(MotionCanvas I) {
	Animator B=this;
	B.I=I;
	return(B);
    }

    public double getCount(double mesh) {
        double mod;
	mod=count/speed+mesh;
	return(mod);
    }
}