private static IEnumerable <Intersection> GetIntersections(IEventQueue eventQueue) { var status = new Status(); List <Intersection> intersections = new List <Intersection>(); while (eventQueue.Count > 0) { var eventPoint = eventQueue.Pop(); switch (eventPoint.type) { case EventPoint.EP_START: break; case EventPoint.EP_INTERSECT: break; case EventPoint.EP_END: break; default: throw new Exception("Unexpected event point type: " + eventPoint.type); } } return(intersections); }