sbool containsPt(int x1, int y1, int w, int h, Pt p) {
  ret p.x >= x1 && p.y >= y1 && p.x < x1+w && p.y < y1+h;
}

sbool containsPt(Rect a, int x, int y) {
  ret a != null && a.contains(x, y);
}

sbool containsPt(Rect a, Pt p) {
  ret a != null && p != null && a.contains(p.x, p.y);
}

Began life as a copy of #1006664