private Route CalculateRoute(Waypoint start, Waypoint end)
{
IEnumerable<Connection> shortestPathResult;
if (!(World.ShortestPathsDijkstra(e => e.Time.TotalSeconds, start)(end, out shortestPathResult)))
throw new Exception("Cannot locate a path from " + start + " to " + end);
var waypoints = shortestPathResult.ToList();
return new Route(waypoints);
}
public Route Route(Waypoint start, Waypoint end)
{
if (!_routeCache.ContainsKey(start))
_routeCache[start] = new ConcurrentDictionary<Waypoint, Route>();
if (_routeCache[start].ContainsKey(end))
return _routeCache[start][end];
return (_routeCache[start][end] = CalculateRoute(start, end));
}
