import java.applet.*;
import java.awt.Graphics;
import RKDemo;
import Rectangle;

public class NumJava extends Applet 
{
    int width=100; // the real width is 200
    int height=100; // the real height is 200
    int offsetx=50;
    int offsety=50;
    double x1 = 225.0;
    double y1 = 30;

    double tim =0;
    double dtim=0.01;

    public double[] x;

    int maxtim = 5;
    int brectcx;
    int brectcy;

public void paint(Graphics g)
    {
	setBackground(java.awt.Color.white);
	
        x = new double[3];

	x[0]=3;
	x[1]=0;
	x[2]=0;

        double[] xold=new double[3];

	xold[0]=x[0];
	xold[1]=x[1]; 
	xold[2]=x[2];

	Rectangle rect = new Rectangle(15,10,(int)x1,(int)y1);
	RKDemo nint=new RKDemo(tim,x,.01);

	System.out.println("time                    xold[0]                    ");
	if(tim==0)
	    {
		while(tim<maxtim)
	    	    {
			rect.cx = (int)x1;
			rect.cy = (int)y1;

			y1 = 30+(70*(3-xold[0]));

			g.setColor(java.awt.Color.white);
    			g.drawLine(brectcx-rect.rw,brectcy-rect.rh,brectcx-rect.rw,brectcy+rect.rh);
    			g.drawLine(brectcx-rect.rw,brectcy-rect.rh,brectcx+rect.rw,brectcy-rect.rh);
    			g.drawLine(brectcx+rect.rw,brectcy-rect.rh,brectcx+rect.rw,brectcy+rect.rh);
    			g.drawLine(brectcx+rect.rw,brectcy+rect.rh,brectcx-rect.rw,brectcy+rect.rh);
			g.setColor(java.awt.Color.black);

    			g.drawLine(rect.cx-rect.rw,rect.cy-rect.rh,rect.cx-rect.rw,rect.cy+rect.rh);
    			g.drawLine(rect.cx-rect.rw,rect.cy-rect.rh,rect.cx+rect.rw,rect.cy-rect.rh);
    			g.drawLine(rect.cx+rect.rw,rect.cy-rect.rh,rect.cx+rect.rw,rect.cy+rect.rh);
    			g.drawLine(rect.cx+rect.rw,rect.cy+rect.rh,rect.cx-rect.rw,rect.cy+rect.rh);

			System.out.println("" +tim+"     " +xold[0]);
			brectcx = rect.cx;
			brectcy = rect.cy;
	
			nint.iterate();
			xold[0]=nint.x[0]; xold[1]=nint.x[1]; xold[2]=nint.x[2];
	    		tim+=dtim;

			g.setColor(java.awt.Color.black);
			g.drawOval(125,230,200,20);
    	 	    }  	   
    	    }
	g.setColor(java.awt.Color.black);
	g.drawOval(125,230,200,20);

    	g.drawLine(rect.cx-rect.rw,rect.cy-rect.rh,rect.cx-rect.rw,rect.cy+rect.rh);
    	g.drawLine(rect.cx-rect.rw,rect.cy-rect.rh,rect.cx+rect.rw,rect.cy-rect.rh);
    	g.drawLine(rect.cx+rect.rw,rect.cy-rect.rh,rect.cx+rect.rw,rect.cy+rect.rh);
    	g.drawLine(rect.cx+rect.rw,rect.cy+rect.rh,rect.cx-rect.rw,rect.cy+rect.rh);
    }
}