Method dist

code/geometry/rotating_calipers.cpp:16–20

    while (angle < 0) angle += 2*pi; }
  void move_to(ii pt2) { pt = pt2; }
  double dist(const caliper &other) {
    point a(pt.first,pt.second),
       b = a + exp(point(0,angle)) * 10.0,
       c(other.pt.first, other.pt.second);
    return abs(c - closest_point(a, b, c)); } };
// int h = convex_hull(pts);
// double mx = 0;
// if (h > 1) {