import java.awt.Graphics;

public class c12_rossler extends java.applet.Applet {
  static final int left = 20;
  static final int w = 300;
  static final double a = 0.2;
  static final double b = 0.2;
  static final double c = 5.7;
  static final double dt = 0.04;
  static final double dt2 = dt/2;
  static final int hide = 5000;

  public void paint(Graphics g)
  {
    LineTo lt = new LineTo(g);
    double xmin = 1000;
    double xmax = -1000;
    double ymin = 1000;
    double ymax = -1000;
    double xn = 0;
    double yn = 1;
    double zn = 0;
    double xfac = 0;
    double yfac = 0;
    double fn[] = new double[3];
    for (int i = 0; i < 50000; i++) {
      f(xn, yn, zn, fn);
      double xn0 = xn;
      double yn0 = yn;
      double zn0 = zn;
      double xfn0 = fn[0];
      double yfn0 = fn[1];
      double zfn0 = fn[2];
      xn = xn0 + dt*xfn0;
      yn = yn0 + dt*yfn0;
      zn = zn0 + dt*zfn0;
      f(xn, yn, zn, fn);
      xn = xn0 + dt2*(fn[0] + xfn0);
      yn = yn0 + dt2*(fn[1] + yfn0);
      zn = zn0 + dt2*(fn[2] + zfn0);
      if (i < hide) {
        if (xn > xmax) xmax = xn;
        if (xn < xmin) xmin = xn;
        if (yn+zn > ymax) ymax = yn+zn;
        if (yn+zn < ymin) ymin = yn+zn;
        if (i == hide-1) {
          xfac = w/(xmax-xmin);
          yfac = w/(ymax-ymin);
          lt.drawLine((int)(left-xfac*(1+xmin)), (int)(left+w+yfac*ymin), (int)(left+xfac*(1-xmin)), (int)(left+w+yfac*ymin));
          lt.drawLine((int)(left-xfac*xmin), (int)(left+w-yfac*(1-ymin)), (int)(left-xfac*xmin), (int)(left+w+yfac*(1+ymin)));
          lt.moveTo((int)(left+xfac*(xn-xmin)), (int)(left+w-yfac*(yn+zn-ymin)));
        }
      } else {
        lt.lineTo((int)(left+xfac*(xn-xmin)), (int)(left+w-yfac*(yn+zn-ymin)));
      }
    }
  }

  void f(double xn, double yn, double zn, double[] fn)
  {
    fn[0] = - yn - zn;
    fn[1] = xn + a*yn;
    fn[2] = b+xn*zn-c*zn;
  }
}