static double g22_squareness(Rect r) {
  ret doubleRatio(min(r.w, r.h), max(r.w, r.h));
}

// Original approach - turns out this is just the same as the version
// above
/*static double g22_squareness_b(Rect r) {
  ret distanceToProbability(doubleRatio(max(r.w, r.h), min(r.w, r.h))-1);
}*/