CONTROL_POINT_EXTEND
rect.InsetBy(-CONTROL_POINT_EXTEND, -CONTROL_POINT_EXTEND);
rect.InsetBy(-CONTROL_POINT_EXTEND, -CONTROL_POINT_EXTEND);
r.Set(pointIn.x - CONTROL_POINT_EXTEND, pointIn.y - CONTROL_POINT_EXTEND,
pointIn.x + CONTROL_POINT_EXTEND, pointIn.y + CONTROL_POINT_EXTEND);
r.Set(pointOut.x - CONTROL_POINT_EXTEND, pointOut.y - CONTROL_POINT_EXTEND,
pointOut.x + CONTROL_POINT_EXTEND, pointOut.y + CONTROL_POINT_EXTEND);