public override List <Edge> GetShortestRoute(int sourceStopId, int destinationStopId, DateTime when)
{
if (!_priorityQueues.ContainsKey(Thread.CurrentThread))
{
var storage = new BinaryHeapPriorityQueue();
_priorityQueues.Add(Thread.CurrentThread, storage);
}
var result = new List <Edge>();
#region Dijkstra
{
int iterationCount = 0;
Console.WriteLine("Looking for route between '" + GetStop(sourceStopId).StopName + "' and '" + GetStop(destinationStopId).StopName + "'");
var inclompleteNodes = new List <Node>();
bool traceComplete = false;
// Kezdetben csak a forráspont van kész, nem vezet hozzá semmi
var currentNode = new CompleteNode
{
stopId = sourceStopId,
departureTime = when.TimeOfDay,
viaNode = null,
usedEdges = new Stack <Edge>(),
usedRouteIds = new Stack <int>()
};
// Mindenki mást pedig várakozik a kifejtésre
foreach (var stop in AllStops.Where(s => s.DbId != sourceStopId))
{
inclompleteNodes.Add(new Node
{
stopId = stop.DbId
});
}
// Az útvonalkereső hurok
while ((!traceComplete) && (inclompleteNodes.Count > 0))
{
if ((iterationCount % 25) == 0)
{
Console.WriteLine("Iteration: " + ((iterationCount / 25) + 1) + " x 25 | with " + inclompleteNodes.Count + " icnodes");
iterationCount++;
}
currentNode = GetNextCompleteNode(currentNode, inclompleteNodes, when);
if (currentNode == null)
{
Console.WriteLine("No route between '" + GetStop(sourceStopId).StopName + "' and '" + GetStop(destinationStopId).StopName + "'");
break;
}
// Áthelyezés a kész csomópontok közé
{
var removedNode = inclompleteNodes.Single(n => n.stopId == currentNode.stopId);
inclompleteNodes.Remove(removedNode);
}
// Ha megtaláltuk a célt, akkor leállunk
if (currentNode.stopId == destinationStopId)
{
traceComplete = true;
Console.WriteLine("Trace complete between '" + GetStop(sourceStopId).StopName + "' and '" + GetStop(destinationStopId).StopName + "'");
Console.WriteLine("Shortest path Found. # of used routes: " + currentNode.usedRouteIds.Count + " | arrival: " + currentNode.departureTime.ToString());
result.AddRange(currentNode.usedEdges.Reverse());
result.ForEach(
e =>
{
Console.WriteLine(e.GetType().Name + " " + e.ToString());
});
}
}
}
#endregion
if (_priorityQueues.ContainsKey(Thread.CurrentThread))
{
_priorityQueues.Remove(Thread.CurrentThread);
}
return(result);
}
public override List<Edge> GetShortestRoute(int sourceStopId, int destinationStopId, DateTime when)
{
if (!_priorityQueues.ContainsKey(Thread.CurrentThread))
{
var storage = new BinaryHeapPriorityQueue();
_priorityQueues.Add(Thread.CurrentThread, storage);
}
var result = new List<Edge>();
#region Dijkstra
{
int iterationCount = 0;
Console.WriteLine("Looking for route between '" + GetStop(sourceStopId).StopName + "' and '" + GetStop(destinationStopId).StopName + "'");
var inclompleteNodes = new List<Node>();
bool traceComplete = false;
// Kezdetben csak a forráspont van kész, nem vezet hozzá semmi
var currentNode = new CompleteNode
{
stopId = sourceStopId,
departureTime = when.TimeOfDay,
viaNode = null,
usedEdges = new Stack<Edge>(),
usedRouteIds = new Stack<int>()
};
// Mindenki mást pedig várakozik a kifejtésre
foreach (var stop in AllStops.Where(s => s.DbId != sourceStopId))
{
inclompleteNodes.Add(new Node
{
stopId = stop.DbId
});
}
// Az útvonalkereső hurok
while ((!traceComplete) && (inclompleteNodes.Count > 0))
{
if ((iterationCount % 25) == 0)
{
Console.WriteLine("Iteration: " + ((iterationCount / 25) + 1) + " x 25 | with " + inclompleteNodes.Count + " icnodes");
iterationCount++;
}
currentNode = GetNextCompleteNode(currentNode, inclompleteNodes, when);
if (currentNode == null)
{
Console.WriteLine("No route between '" + GetStop(sourceStopId).StopName + "' and '" + GetStop(destinationStopId).StopName + "'");
break;
}
// Áthelyezés a kész csomópontok közé
{
var removedNode = inclompleteNodes.Single(n => n.stopId == currentNode.stopId);
inclompleteNodes.Remove(removedNode);
}
// Ha megtaláltuk a célt, akkor leállunk
if (currentNode.stopId == destinationStopId)
{
traceComplete = true;
Console.WriteLine("Trace complete between '" + GetStop(sourceStopId).StopName + "' and '" + GetStop(destinationStopId).StopName + "'");
Console.WriteLine("Shortest path Found. # of used routes: " + currentNode.usedRouteIds.Count + " | arrival: " + currentNode.departureTime.ToString());
result.AddRange(currentNode.usedEdges.Reverse());
result.ForEach(
e =>
{
Console.WriteLine(e.GetType().Name + " " + e.ToString());
});
}
}
}
#endregion
if (_priorityQueues.ContainsKey(Thread.CurrentThread))
{
_priorityQueues.Remove(Thread.CurrentThread);
}
return result;
}