public void TestUncontractedWitnessed()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.MetaSize);
graph.AddEdge(0, 1, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 0, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 2, 100, null, Constants.NO_VERTEX);
graph.AddEdge(2, 1, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 3, 10, null, Constants.NO_VERTEX);
graph.AddEdge(3, 1, 10, null, Constants.NO_VERTEX);
graph.AddEdge(3, 2, 10, null, Constants.NO_VERTEX);
graph.AddEdge(2, 3, 10, null, Constants.NO_VERTEX);
graph.Compress();
// contract graph.
var priorities = new Dictionary <uint, float>();
priorities.Add(1, 0);
priorities.Add(0, 1);
priorities.Add(2, 2);
priorities.Add(3, 3);
var hierarchyBuilder = new HierarchyBuilder(graph,
new MockPriorityCalculator(priorities),
new DykstraWitnessCalculator(int.MaxValue));
hierarchyBuilder.Run();
// edges 1->2 and 2->1 should have been removed.
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
var edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(110, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(10, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(10, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
}
public void Test3Vertices()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, null);
graph.AddEdge(1, 0, 100, null);
graph.AddEdge(1, 2, 100, null);
graph.AddEdge(2, 1, 100, null);
graph.Compress();
// contract graph.
var hierarchyBuilder = new HierarchyBuilder(graph, new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue)),
new DykstraWitnessCalculator(int.MaxValue), (i) => Enumerable.Empty <uint[]>());
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edge10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge10);
var edge12 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge12);
var edges21 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges21);
}
public void Test2VerticesAgumented()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.MetaAugmentedSize);
graph.AddEdge(0, 1, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(1, 0, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.Compress();
// contract graph.
var hierarchyBuilder = new HierarchyBuilder <Weight>(graph,
new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue)),
new DykstraWitnessCalculator(int.MaxValue), new WeightHandler(null));
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edge10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge10);
}
/// <summary>
/// The main entry point for the application
/// </summary>
private static void Main(string[] args)
{
try
{
Settings settings;
if (!TryInitialize(out settings))
{
Usage();
return;
}
using (var builder = new HierarchyBuilder(settings))
{
builder.Run();
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
Usage();
}
}
/// <summary>
/// The main entry point for the application
/// </summary>
private static void Main(string[] args)
{
try
{
Settings settings;
if (!TryInitialize(out settings))
{
Usage();
return;
}
using (var builder = new HierarchyBuilder(settings))
{
builder.Run();
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
Usage();
}
}
/// <summary>
/// Creates a new contracted graph and adds it to the router db for the given profile.
/// </summary>
public static void AddContracted <T>(this RouterDb db, Profiles.Profile profile, WeightHandler <T> weightHandler, bool forceEdgeBased = false)
where T : struct
{
// create the raw directed graph.
ContractedDb contractedDb = null;
lock (db)
{
if (forceEdgeBased)
{ // edge-based is needed when complex restrictions found.
var contracted = new DirectedDynamicGraph(weightHandler.DynamicSize);
var directedGraphBuilder = new Itinero.Algorithms.Contracted.EdgeBased.DirectedGraphBuilder <T>(db.Network.GeometricGraph.Graph, contracted,
weightHandler);
directedGraphBuilder.Run();
// contract the graph.
var priorityCalculator = new Itinero.Algorithms.Contracted.EdgeBased.EdgeDifferencePriorityCalculator <T>(contracted, weightHandler,
new Itinero.Algorithms.Contracted.EdgeBased.Witness.DykstraWitnessCalculator <T>(weightHandler, int.MaxValue));
priorityCalculator.DifferenceFactor = 5;
priorityCalculator.DepthFactor = 5;
priorityCalculator.ContractedFactor = 8;
var hierarchyBuilder = new Itinero.Algorithms.Contracted.EdgeBased.HierarchyBuilder <T>(contracted, priorityCalculator,
new Itinero.Algorithms.Contracted.EdgeBased.Witness.DykstraWitnessCalculator <T>(weightHandler, int.MaxValue), weightHandler, db.GetGetRestrictions(profile, null));
hierarchyBuilder.Run();
contractedDb = new ContractedDb(contracted);
}
else
{ // vertex-based is ok when no complex restrictions found.
var contracted = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size, weightHandler.MetaSize);
var directedGraphBuilder = new DirectedGraphBuilder <T>(db.Network.GeometricGraph.Graph, contracted, weightHandler);
directedGraphBuilder.Run();
// contract the graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(contracted,
new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.DifferenceFactor = 5;
priorityCalculator.DepthFactor = 5;
priorityCalculator.ContractedFactor = 8;
var hierarchyBuilder = new HierarchyBuilder <T>(contracted, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue), weightHandler);
hierarchyBuilder.Run();
contractedDb = new ContractedDb(contracted);
}
}
// add the graph.
lock (db)
{
db.AddContracted(profile, contractedDb);
}
}
public void TestDoubleContraction()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.MetaSize);
graph.AddEdge(0, 2, 100, null, Constants.NO_VERTEX);
graph.AddEdge(2, 0, 100, null, Constants.NO_VERTEX);
graph.AddEdge(0, 3, 100, null, Constants.NO_VERTEX);
graph.AddEdge(3, 0, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 2, 200, null, Constants.NO_VERTEX);
graph.AddEdge(2, 1, 200, null, Constants.NO_VERTEX);
graph.AddEdge(1, 3, 200, null, Constants.NO_VERTEX);
graph.AddEdge(3, 1, 200, null, Constants.NO_VERTEX);
graph.Compress();
// contract graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.DepthFactor = 0;
priorityCalculator.ContractedFactor = 0;
var hierarchyBuilder = new HierarchyBuilder(graph, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue));
hierarchyBuilder.Run();
// check edges.
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
}
public void Test3VerticesComplete()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.MetaSize);
graph.AddEdge(0, 1, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 0, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 2, 100, null, Constants.NO_VERTEX);
graph.AddEdge(2, 1, 100, null, Constants.NO_VERTEX);
graph.AddEdge(0, 2, 100, null, Constants.NO_VERTEX);
graph.AddEdge(2, 0, 100, null, Constants.NO_VERTEX);
graph.Compress();
// contract graph.
var hierarchyBuilder = new HierarchyBuilder(graph, new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue)),
new DykstraWitnessCalculator(int.MaxValue));
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edges02 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edges02);
var edge10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge10);
var edge12 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edge12);
var edges20 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges20);
var edges21 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges21);
}
public void TestRestrictedNetwork2()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, null);
graph.AddEdge(1, 0, 100, null);
graph.AddEdge(1, 2, 100, null);
graph.AddEdge(2, 1, 100, null);
graph.AddEdge(1, 3, 100, null);
graph.AddEdge(3, 1, 100, null);
graph.AddEdge(1, 4, 100, null);
graph.AddEdge(4, 1, 100, null);
graph.AddEdge(2, 3, 100, null);
graph.AddEdge(3, 2, 100, null);
graph.Compress();
// contract graph.
var priorities = new Dictionary <uint, float>();
priorities.Add(1, 0);
priorities.Add(0, 1);
priorities.Add(2, 2);
priorities.Add(3, 3);
priorities.Add(4, 4);
var hierarchyBuilder = new HierarchyBuilder(graph,
new MockPriorityCalculator(priorities),
new DykstraWitnessCalculator(int.MaxValue), (i) =>
{
if (i == 0 || i == 1 || i == 4)
{
return(new uint[][]
{
new uint[] { 0, 1, 4 }
});
}
return(null);
});
hierarchyBuilder.Run();
// check all edges.
ContractedEdgeData edgeData;
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x =>
{
if (x.Neighbour == 4)
{
edgeData = ContractedEdgeDataSerializer.Deserialize(x.Data[0], Constants.NO_VERTEX);
return(edgeData.Direction == true);
}
return(false);
});
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(500, edgeData.Weight);
Assert.AreEqual(true, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x =>
{
if (x.Neighbour == 4)
{
edgeData = ContractedEdgeDataSerializer.Deserialize(x.Data[0], Constants.NO_VERTEX);
return(edgeData.Direction == false);
}
return(false);
});
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(false, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
}
public void TestPentagonDirected()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, true);
graph.AddEdge(1, 0, 100, false);
graph.AddEdge(1, 2, 100, true);
graph.AddEdge(2, 1, 100, false);
graph.AddEdge(2, 3, 100, true);
graph.AddEdge(3, 2, 100, false);
graph.AddEdge(3, 4, 100, true);
graph.AddEdge(4, 3, 100, false);
graph.AddEdge(4, 0, 100, true);
graph.AddEdge(0, 4, 100, false);
graph.Compress();
// contract graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.ContractedFactor = 0;
priorityCalculator.DepthFactor = 0;
var hierarchyBuilder = new HierarchyBuilder(graph, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue), (i) => Enumerable.Empty <uint[]>());
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edges10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges10);
var edges12 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edges12);
var edges21 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges21);
var edges23 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edges23);
var edges32 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edges32);
var edges34 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNull(edges34);
var edges43 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edges43);
var edges40 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges40);
var edges04 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edges04);
var edges41 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges41);
var s1 = edges41.GetSequence1();
var s2 = edges41.GetSequence2();
Assert.AreEqual(1, s1.Length);
Assert.AreEqual(0, s1[0]);
Assert.AreEqual(1, s2.Length);
Assert.AreEqual(0, s2[0]);
var edges14 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNull(edges14);
var edges31 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges31);
s1 = edges31.GetSequence1();
s2 = edges31.GetSequence2();
Assert.AreEqual(1, s1.Length);
Assert.AreEqual(4, s1[0]);
Assert.AreEqual(1, s2.Length);
Assert.AreEqual(0, s2[0]);
var edges13 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNull(edges13);
}
public void TestPentagonAugmented()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.DynamicAugmentedFixedSize);
graph.AddEdge(0, 1, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(1, 0, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(1, 2, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(2, 1, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(2, 3, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(3, 2, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(3, 4, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(4, 3, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(4, 0, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.AddEdge(0, 4, 100, null, Constants.NO_VERTEX, 50, 1000);
graph.Compress();
// contract graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.ContractedFactor = 0;
priorityCalculator.DepthFactor = 0;
var hierarchyBuilder = new HierarchyBuilder <Weight>(graph, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue), new WeightHandler(null));
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edges10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges10);
var edges12 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edges12);
var edges21 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges21);
var edges23 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edges23);
var edges32 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edges32);
var edges34 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNull(edges34);
var edges43 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edges43);
var edges40 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges40);
var edges04 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edges04);
var edges41 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges41);
var edges14 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNull(edges14);
var edges31 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges31);
var edges13 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNull(edges13);
}
public void TestDoubleContractionOneway()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.MetaSize);
graph.AddEdge(0, 2, 100, true, Constants.NO_VERTEX);
graph.AddEdge(2, 0, 100, false, Constants.NO_VERTEX);
graph.AddEdge(0, 3, 10, false, Constants.NO_VERTEX);
graph.AddEdge(3, 0, 10, true, Constants.NO_VERTEX);
graph.AddEdge(1, 2, 1000, false, Constants.NO_VERTEX);
graph.AddEdge(2, 1, 1000, true, Constants.NO_VERTEX);
graph.AddEdge(1, 3, 10000, true, Constants.NO_VERTEX);
graph.AddEdge(3, 1, 10000, false, Constants.NO_VERTEX);
graph.Compress();
// contract graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.ContractedFactor = 0;
priorityCalculator.DepthFactor = 0;
var hierarchyBuilder = new HierarchyBuilder(graph, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue));
hierarchyBuilder.Run();
// check edges.
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
var edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(true, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(10, edgeData.Weight);
Assert.AreEqual(false, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(110, edgeData.Weight);
Assert.AreEqual(false, edgeData.Direction);
Assert.AreEqual(0, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(1000, edgeData.Weight);
Assert.AreEqual(true, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1 &&
ContractedEdgeDataSerializer.Deserialize(x.Data[0], x.MetaData[0]).Direction == true);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(1110, edgeData.Weight);
Assert.AreEqual(2, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1 &&
ContractedEdgeDataSerializer.Deserialize(x.Data[0], x.MetaData[0]).Direction == false);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], edge.MetaData[0]);
Assert.AreEqual(10000, edgeData.Weight);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNull(edge);
}