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

double dx(0.5), rad(0.125);

void veloc(const P& loc, const P& off,
	   const std::string& msg, epix_label_posn A)
{
  arrow(loc, loc + P(dx,0));
  label(loc + 0.5*dx, off, msg, A);
}

int main()
{
  picture(P(0,-rad), P(3,rad), "3 x 0.3in");

  begin();
  bold();
  arrow_inset(0.5);
  arrow_ratio(2);
  arrow_width(2);

  line(P(xmin(), -rad), P(xmax(), -rad));
  line(P(xmin(),  rad), P(xmax(),  rad));

  veloc(P(dx, 0), P(0,2), "$v$", t);

  label(P(0.5*xmax(), ymax()), P(0,2), "$T$", t);

  tikz_format();
  end();
}