void HelloMultitouch::handlePointEvents(const std::vector<gwc::PointEvent>& point_events){
	for (const auto& point : point_events){
		if (point.status == gwc::TOUCHADDED || point.status == gwc::TOUCHUPDATE){

			// By default, GestureWorks sends us coordinates in normalized screen space. To get to localized pixel
			// coordinates we need to do a conversion.
			std::pair<int, int> screen_coords(normScreenToWindowPx(point.position.x, point.position.y));

			// Update the touchpoints position
			touch_points[point.point_id] = TouchPoint(point.point_id, screen_coords.first, screen_coords.second);
		}
		else{	
			touch_points.erase(point.point_id);
		}
	}
}