docs: def set_points(self, pt1, pt2):
          """Reset the rectangle coordinates."""
          (x1, y1) = pt1.as_tuple()
          (x2, y2) = pt2.as_tuple()
          self.left = min(x1, x2)
          self.top = min(y1, y2)
          self.right = max(x1, x2)
          self.bottom = max(y1, y2)