/* -*-ePiX-*- */
/* koch.c -- May 29, 2002 */
#include "epix.h"
using namespace ePiX;

const int koch_seed[] = {6, 4, 0, 1, -1, 0};

int main() 
{
  picture(P(0,0), P(4, 1), "6 x 1.5in");

  begin();
  degrees();

  for (int i=1; i <= 4; ++i)
    {
      // draw von Koch curve at "depth" i
      screen tmp(P(-1,-1), P(1,1));
      activate(tmp);

      if (i==1)
        {
          bold(Red());
          fractal(cis(150), cis(30), i, koch_seed);
          plain(Black());
        }
      else
	fractal(cis(150), cis( 30), i, koch_seed);

      fractal(cis( 30), cis(-90), i, koch_seed);
      fractal(cis(-90), cis(150), i, koch_seed);

      inset(tmp, P(i-1,0), P(i,1));
      deactivate(tmp);
    }
  end();
}