/// <summary>
/// Creates a new preprocessor.
/// </summary>
public DefaultPreprocessor(GraphBase <CHEdgeData> graph)
{
var witnessCalculator = new DykstraWitnessCalculator();
var edgeDifference = new EdgeDifferenceContractedSearchSpace(graph, witnessCalculator);
_preprocessor = new CHPreprocessor(graph, edgeDifference, witnessCalculator);
}
public void TestPriorityCalculation1NoWitnesses()
{
var graph = new DirectedGraph <CHEdgeData>();
var vertex1 = graph.AddVertex(1, 0);
var vertex2 = graph.AddVertex(2, 0);
var vertex3 = graph.AddVertex(3, 0);
graph.AddEdge(vertex1, vertex3, new CHEdgeData(1, true, true, true, 10));
graph.AddEdge(vertex3, vertex1, new CHEdgeData(1, false, true, true, 10));
graph.AddEdge(vertex2, vertex3, new CHEdgeData(1, true, true, true, 10));
graph.AddEdge(vertex3, vertex2, new CHEdgeData(1, false, true, true, 10));
var witnessCalculator = new DykstraWitnessCalculator(int.MaxValue);
var priorityCalculator = new EdgeDifferenceContractedSearchSpace(graph, witnessCalculator);
int newEdges, removedEdges, contracted, depth;
priorityCalculator.Calculate(vertex1, out newEdges, out removedEdges, out depth, out contracted);
Assert.AreEqual(0, newEdges);
Assert.AreEqual(1, removedEdges);
Assert.AreEqual(0, depth);
Assert.AreEqual(0, contracted);
priorityCalculator.Calculate(vertex2, out newEdges, out removedEdges, out depth, out contracted);
Assert.AreEqual(0, newEdges);
Assert.AreEqual(1, removedEdges);
Assert.AreEqual(0, depth);
Assert.AreEqual(0, contracted);
priorityCalculator.Calculate(vertex3, out newEdges, out removedEdges, out depth, out contracted);
Assert.AreEqual(2, newEdges);
Assert.AreEqual(2, removedEdges);
Assert.AreEqual(0, depth);
Assert.AreEqual(0, contracted);
}
/// <summary>
/// Returns the preprocessor.
/// </summary>
/// <returns></returns>
public override Graph.PreProcessor.IPreProcessor GetPreprocessor()
{
var witnessCalculator = new DykstraWitnessCalculator();
var edgeDifference = new EdgeDifferenceContractedSearchSpace(this.Graph, witnessCalculator);
return(new CHPreProcessor(this.Graph, edgeDifference, witnessCalculator));
}
/// <summary>
/// Preprocesses the data from the given OsmStreamReader and converts it directly to a routable data source.
/// </summary>
/// <param name="reader"></param>
/// <param name="tagsIndex"></param>
/// <param name="interpreter"></param>
/// <param name="vehicle"></param>
/// <returns></returns>
public static DynamicGraphRouterDataSource <CHEdgeData> Preprocess(OsmStreamSource reader,
ITagsCollectionIndex tagsIndex, IOsmRoutingInterpreter interpreter, Vehicle vehicle)
{
// pull in the data.
var graph = new DynamicGraphRouterDataSource <CHEdgeData>(new MemoryDirectedGraph <CHEdgeData>(), tagsIndex);
var targetData = new CHEdgeGraphOsmStreamTarget(
graph, interpreter, tagsIndex, vehicle);
targetData.RegisterSource(reader);
targetData.Pull();
// compress the graph.
var witnessCalculator = new DykstraWitnessCalculator();
var edgeDifference = new EdgeDifferenceContractedSearchSpace(graph, witnessCalculator);
var preProcessor = new CHPreProcessor(graph, edgeDifference, witnessCalculator);
preProcessor.Start();
return(graph);
}
/// <summary>
/// Flushes all data.
/// </summary>
public override void Flush()
{
base.Flush();
// compress the graph.
INodeWitnessCalculator witnessCalculator = new DykstraWitnessCalculator();
var edgeDifference = new EdgeDifferenceContractedSearchSpace(
_graph, witnessCalculator);
var preProcessor = new CHPreProcessor(
_graph, edgeDifference, witnessCalculator);
preProcessor.Start();
// create tags.
TagsCollectionBase metaTags = new TagsCollection();
// create serializer.
var routingSerializer = new CHEdgeDataDataSourceSerializer();
routingSerializer.Serialize(_graphStream, _graph, metaTags);
_graphStream.Flush();
}
