public void Delete_RedNode_With_NoChildren_Should_TriggerRotations_AndRecoloring()
{
RBTree <int> tree = new RBTree <int>();
for (int i = 0; i < 10; i++)
{
tree.Add(i);
}
tree.Delete(tree.GetNode(7));
var exception = Assert.Throws <KeyNotFoundException>(() => tree.GetNode(7));
Assert.True(exception.Message == "Key not found.");
}
public void GetNode_Should_ReturnNode()
{
RBTree <int> tree = new RBTree <int>();
for (int i = 0; i < 10; i++)
{
tree.Add(i);
}
Assert.True(tree.GetNode(3).Key == 3);
}
public void GetNonExistentKey_ShouldBe_False()
{
RBTree <int> tree = new RBTree <int>();
for (int i = 0; i < 10; i++)
{
tree.Add(i);
}
Assert.False(tree.GetNode(3).Key == 10);
}
public void GetNonExistentKey_Should_ReturnDefault()
{
RBTree <int> tree = new RBTree <int>();
for (int i = 0; i < 10; i++)
{
tree.Add(i);
}
var exception = Assert.Throws <KeyNotFoundException>(() => tree.GetNode(33));
Assert.True(exception.Message == "Key not found.");
}
/// <summary>
/// Dijkstra in graph gr, from source to destination, using vehicle v.
/// </summary>
/// <param name="source"> the startpoint </param>
/// <param name="destination"> the destination </param>
/// <param name="v"> vehicle that is used </param>
/// <returns></returns>
public Route Dijkstra(long from, long to, Vehicle[] vehicles, RouteMode mode, bool useBus)
{
Route result = null;
if (from == 0 || to == 0 || graph == null)
return result;
Node source = graph.GetNode(from);
Node destination = graph.GetNode(to);
//all nodes that are completely solved
SortedList<long, Node> solved = new SortedList<long, Node>();
//nodes that are encountered but not completely solved
SortedList<double, Node> unsolved = new SortedList<double, Node>();
RBTree<Node> prevs = new RBTree<Node>();
RBTree<double> times = new RBTree<double>();
RBTree<double> distances = new RBTree<double>();
RBTree<Vehicle> vehicleUse = new RBTree<Vehicle>();
ListTree<Vehicle> forbiddenVehicles = new ListTree<Vehicle>();
List<Edge> abstractBusses = graph.GetAbstractBusEdges();
Node current = source;
bool found = false;
//if there's no new current node it means the algorithm should stop
while (current != null)
{
//if we encounter the destination it means we found the shortest route so we break
if (current == destination)
{
found = true;
break;
}
List<Edge> edges = new List<Edge>(graph.GetEdgesFromNode(current.ID));
foreach (Edge busEdge in abstractBusses)
{
if (busEdge.End == current.ID || busEdge.Start == current.ID)
edges.Add(busEdge);
}
Node prev = prevs.Get(current.ID);
if (prev != null)
{
foreach (Vehicle vehicle in forbiddenVehicles.Get(prev.ID))
{
forbiddenVehicles.Insert(current.ID, vehicle);
}
}
foreach (Edge e in edges)
{
if (IsAllowed(e, vehicles, useBus))
{
Node start = graph.GetNode(e.Start);
Node end = graph.GetNode(e.End);
double distance = double.PositiveInfinity;
double time = double.PositiveInfinity;
Vehicle v = vehicles[0];
if (e.Type != CurveType.AbstractBusRoute)
{
if (e.Type != CurveType.Bus)
{
double speed = 0;
foreach (Vehicle vehicle in vehicles)
{
if (!forbiddenVehicles.Get(current.ID).Contains(vehicle))
{
double vSpeed = GetSpeed(vehicle, e);
if (vSpeed > speed && IsAllowed(e, vehicle, useBus))
{
speed = vSpeed;
v = vehicle;
}
}
}
distance = NodeCalcExtensions.Distance(start, end);
time = distance / speed;
}
else if (e.Route != null)
{
// Take busroute if better
if (mode == RouteMode.Fastest && time > e.Route.Time || mode == RouteMode.Shortest && distance > e.Route.Length)
{
distance = e.Route.Length;
time = e.Route.Time;
v = Vehicle.Foot;
foreach (Vehicle vehicle in vehicles)
if (vehicle != Vehicle.Foot)
forbiddenVehicles.Insert(current.ID, vehicle);
}
}
}
else
{
Node n1 = null, n2 = null;
if (start.Longitude != 0 || start.Latitude != 0)
n1 = graph.GetNodeByPos(start.Longitude, start.Latitude, Vehicle.Bus);
if (end.Longitude != 0 || end.Latitude != 0)
n2 = graph.GetNodeByPos(end.Longitude, end.Latitude, Vehicle.Bus);
if (n1 != default(Node) && n2 != default(Node))
{
Curve curve = new Curve(new long[] { start.ID, end.ID }, e.Name);
Route r = this.Dijkstra(n1.ID, n2.ID, new Vehicle[] { Vehicle.Bus }, RouteMode.Fastest, false);
r = new Route(new Node[] { start }, Vehicle.Bus) + r + new Route(new Node[] { end }, Vehicle.Bus);
curve.Type = CurveType.Bus;
curve.Route = r;
// We calculate with 60 seconds of switch over to the bus.
r.Time += 60;
graph.AddWay(start.ID, curve);
graph.AddWay(end.ID, curve);
e.Route = r;
e.Type = CurveType.Bus;
// Take busroute if better
if (mode == RouteMode.Fastest && time > e.Route.Time || mode == RouteMode.Shortest && distance > e.Route.Length)
{
distance = e.Route.Length;
time = e.Route.Time;
v = Vehicle.Foot;
foreach (Vehicle vehicle in vehicles)
if (vehicle != Vehicle.Foot)
forbiddenVehicles.Insert(current.ID, vehicle);
}
}
graph.RemoveAbstractBus(e);
abstractBusses.Remove(e);
}
time += times.Get(current.ID);
double trueDist = distances.Get(current.ID) + distance;
if (!solved.ContainsValue(end) && current != end)
{
if (end.Latitude != 0 && end.Longitude != 0)
{
if (times.Get(end.ID) == 0 || distances.Get(end.ID) == 0)
{
times.Insert(end.ID, double.PositiveInfinity);
distances.Insert(end.ID, double.PositiveInfinity);
vehicleUse.Insert(end.ID, v);
}
if ((mode == RouteMode.Fastest &&
times.Get(end.ID) > time) ||
(mode == RouteMode.Shortest &&
distances.Get(end.ID) > trueDist))
{
times.GetNode(end.ID).Content = time;
distances.GetNode(end.ID).Content = trueDist;
vehicleUse.GetNode(end.ID).Content = v;
if (prevs.GetNode(end.ID).Content == null)
prevs.Insert(end.ID, current);
else
prevs.GetNode(end.ID).Content = current;
if (!unsolved.ContainsValue(end))
{
if (mode == RouteMode.Fastest)
{
// Very bad solution but I couldn't think of a simple better one.
while (unsolved.ContainsKey(times.Get(end.ID)))
{
times.GetNode(end.ID).Content += 0.0000000001;
}
unsolved.Add(times.Get(end.ID), end);
}
else if (mode == RouteMode.Shortest)
{
// Very bad solution but I couldn't think of a simple better one.
while (unsolved.ContainsKey(distances.Get(end.ID)))
{
distances.GetNode(end.ID).Content += 0.0000000001;
}
unsolved.Add(distances.Get(end.ID), end);
}
if (prevs.GetNode(current.ID).Content != null &&
vehicleUse.Get(prevs.GetNode(current.ID).Content.ID) == Vehicle.Car)
{
if (v == Vehicle.Foot)
{
forbiddenVehicles.Insert(end.ID, Vehicle.Car);
}
}
}
}
}
}
else if (!solved.ContainsValue(start) && current != start)
{
if (start.Latitude != 0 && start.Longitude != 0)
{
if (times.Get(start.ID) == 0 || distances.Get(start.ID) == 0)
{
times.Insert(start.ID, double.PositiveInfinity);
distances.Insert(start.ID, double.PositiveInfinity);
vehicleUse.Insert(start.ID, v);
}
if ((mode == RouteMode.Fastest &&
times.Get(start.ID) > time) ||
(mode == RouteMode.Shortest &&
distances.Get(start.ID) > trueDist))
{
times.GetNode(start.ID).Content = time;
distances.GetNode(start.ID).Content = trueDist;
vehicleUse.GetNode(start.ID).Content = v;
if (prevs.GetNode(start.ID).Content == null)
prevs.Insert(start.ID, current);
else
prevs.GetNode(start.ID).Content = current;
if (!unsolved.ContainsValue(start))
{
if (mode == RouteMode.Fastest)
{
// Very bad solution but I couldn't think of a simple better one.
while (unsolved.ContainsKey(times.Get(start.ID)))
{
times.GetNode(start.ID).Content += 0.0000000001;
}
unsolved.Add(times.Get(start.ID), start);
}
else if (mode == RouteMode.Shortest)
{
// Very bad solution but I couldn't think of a simple better one.
while (unsolved.ContainsKey(distances.Get(start.ID)))
{
distances.GetNode(start.ID).Content += 0.0000000001;
}
unsolved.Add(distances.Get(start.ID), start);
}
}
if (prevs.GetNode(current.ID).Content != null &&
vehicleUse.Get(prevs.GetNode(current.ID).Content.ID) == Vehicle.Car)
{
if (v == Vehicle.Foot)
{
forbiddenVehicles.Insert(start.ID, Vehicle.Car);
}
}
}
}
}
}
}
//dit zou niet voor moeten komen maar toch gebeurt het...
if (!solved.ContainsKey(current.ID))
solved.Add(current.ID, current);
if (unsolved.Count > 0)
{
current = unsolved.Values[0];
unsolved.RemoveAt(0);
}
else
{
current = null;
}
}
if (found)
{
List<Node> nodes = new List<Node>();
List<long> extras = graph.GetExtras();
Node n = destination;
List<long> busStartStop = new List<long>();
do
{
bool foundRoute = false;
if (extras.Contains(n.ID))
{
// Change straigt buslines in for the actual route.
foreach (Edge e in graph.GetEdgesFromNode(n.ID))
{
if (prevs.Get(n.ID) != null && e.Route != null)
{
if (n.ID == e.Start &&
prevs.Get(n.ID).ID == e.End)
{
Node[] busNodes = e.Route.Points;
if (busNodes[0].ID == e.Start)
Array.Reverse(busNodes);
busStartStop.Add(busNodes[busNodes.Length - 1].ID);
busStartStop.Add(busNodes[0].ID);
nodes.InsertRange(0, busNodes);
n = prevs.Get(n.ID);
foundRoute = true;
break;
}
else if (n.ID == e.End &&
prevs.Get(n.ID).ID == e.Start)
{
Node[] busNodes = e.Route.Points;
if (busNodes[0].ID == e.End)
Array.Reverse(busNodes);
busStartStop.Add(busNodes[busNodes.Length - 1].ID);
busStartStop.Add(busNodes[0].ID);
nodes.InsertRange(0, busNodes);
n = prevs.Get(n.ID);
foundRoute = true;
break;
}
}
}
}
if (!foundRoute)
{
nodes.Insert(0, n);
n = prevs.Get(n.ID);
}
} while (n != null);
result = new Route(nodes.ToArray(), vehicles[0]);
result.Time = times.Get(destination.ID);
result.Length = distances.Get(destination.ID);
// Set bus as vehicle
if (busStartStop.Count > 0)
{
int i = busStartStop.Count - 1;
Node[] routePoints = result.Points;
for (int j = 0; j < routePoints.Length; j++)
{
if (routePoints[j].ID == busStartStop[i])
{
if (i % 2 == 1)
{
result.SetVehicle(Vehicle.Bus, j);
i--;
}
else
{
result.SetVehicle(Vehicle.Foot, j);
i--;
}
}
if (i < 0)
break;
}
}
Vehicle cur = result.GetVehicle(0), prev;
for (int i = 2; i < result.NumOfNodes; i++)
{
if (result.GetVehicle(i) != Vehicle.Bus)
{
prev = vehicleUse.Get(result[i].ID);
if (prev != cur && i > 1)
result.SetVehicle(prev, i - 1);
cur = prev;
}
}
}
else
{
result = new Route(new Node[] { source }, vehicles[0]);
result.Time = double.PositiveInfinity;
result.Length = double.PositiveInfinity;
}
return result;
}