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/* -*-ePiX-*- */
#include "epix.h"
using namespace ePiX;
void mirror(const P& loc, const P& refl)
{
P dir(J(refl - loc));
dir *= pt_to_screen(6.0)/(norm(dir));
line(loc + dir, loc - dir);
}
int main()
{
picture(P(-0.5,0), P(2,1), "3 x 1.2in");
begin();
P O(0, 0), Op(0.75, 0), Opp(1.25, 0), pA(1.75, 1);
arrow_inset(0.75);
bold();
arrow(P(xmin(), 0), P(xmax(), 0));
line(pA, O);
line(pA, Op);
line(pA, Opp);
bbold();
mirror(pA, Op);
plain();
arc_measure(Op, Opp - Op, pA - Op, P(2, 2), "$\\theta$", r, 16);
arc_measure(pA, Op - pA, Opp - pA, 24);
arc_measure(pA, O - pA, Op - pA, 20);
circ(O, P(0, -4), "$O$", b);
circ(Op, P(0, -4), "$O'$", b);
circ(Opp, P(0, -4), "$O''$", b);
label(0.5*(O + Op), P(0, -4), "$vt'$", b);
label(0.5*(Op + Opp), P(0, -4), "$vt''$", b);
label(pA, P(2, 2), "$A'$", tr);
label(0.5*(O + pA), P(-2, 2), "$ct'$", tl);
label(0.5*(Opp + pA), P(2, -2), "$ct''$", br);
label(P(0.5*(xmin() + xmax()), ymin()), P(0, -24), "\\textsc{Fig.~8.}", b);
tikz_format();
end();
}
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