/* -*-ePiX-*- */
#include "epix.h"
#include "cme_style.h"
using namespace ePiX;

double rad1(1), rad2(1.5), th(40);

int main()
{
  picture(P(-rad2,-rad2), P(rad2,rad2), "1.5 x 1.5in");

  begin();
  degrees();
  arrow_inset(0.75);
  arrow_ratio(1.5);
  arrow_width(5);

  P O(0,0);
  cme_bold();
  circle(O, rad1);
  circle(O, rad2);

  arrow(O, polar(rad1,0));
  arrow(O, polar(rad2,th));

  label(polar(0.5*rad1,0), P(0,-4), "$r_1$", b);
  label_angle(th);
  label(polar(0.5*rad2,th), P(-2,0), "$r_2$", t);

  label_angle(0);

  caption("Fig.~56.", P(0,12));
  tikz_format();
  end();
}