public void TestTwoEdgesRightHighest()
{
// build graph.
var graph = new DirectedMetaGraph(ContractedEdgeDataSerializer.Size,
ContractedEdgeDataSerializer.MetaSize);
graph.AddEdge(0, 1, 100, null, Constants.NO_VERTEX);
graph.AddEdge(1, 2, 100, null, Constants.NO_VERTEX);
// create algorithm and run.
var algorithm = new Itinero.Algorithms.Contracted.Dykstra(graph,
new EdgePath <float>[] { new EdgePath <float>(0) }, true);
algorithm.Run();
// check results.
Assert.IsTrue(algorithm.HasRun);
Assert.IsTrue(algorithm.HasSucceeded);
EdgePath <float> visit;
Assert.IsTrue(algorithm.TryGetVisit(0, out visit));
Assert.AreEqual(0, visit.Weight);
Assert.AreEqual(0, visit.Vertex);
Assert.AreEqual(null, visit.From);
Assert.IsTrue(algorithm.TryGetVisit(1, out visit));
Assert.AreEqual(100, visit.Weight);
Assert.AreEqual(1, visit.Vertex);
Assert.IsNotNull(visit.From);
Assert.AreEqual(0, visit.From.Vertex);
Assert.IsTrue(algorithm.TryGetVisit(2, out visit));
Assert.AreEqual(200, visit.Weight);
Assert.AreEqual(2, visit.Vertex);
Assert.IsNotNull(visit.From);
Assert.AreEqual(1, visit.From.Vertex);
// create algorithm and run.
algorithm = new Itinero.Algorithms.Contracted.Dykstra(graph,
new EdgePath <float>[] { new EdgePath <float>(0) }, false);
algorithm.Run();
// check results.
Assert.IsTrue(algorithm.HasRun);
Assert.IsTrue(algorithm.HasSucceeded);
Assert.IsTrue(algorithm.TryGetVisit(0, out visit));
Assert.AreEqual(0, visit.Weight);
Assert.AreEqual(0, visit.Vertex);
Assert.AreEqual(null, visit.From);
Assert.IsTrue(algorithm.TryGetVisit(1, out visit));
Assert.AreEqual(100, visit.Weight);
Assert.AreEqual(1, visit.Vertex);
Assert.IsNotNull(visit.From);
Assert.AreEqual(0, visit.From.Vertex);
Assert.IsTrue(algorithm.TryGetVisit(2, out visit));
Assert.AreEqual(200, visit.Weight);
Assert.AreEqual(2, visit.Vertex);
Assert.IsNotNull(visit.From);
Assert.AreEqual(1, visit.From.Vertex);
}
/// <summary>
/// Executes the actual run.
/// </summary>
protected override void DoRun(CancellationToken cancellationToken)
{
// put in default weights and weights for one-edge-paths.
_paths = new Solution[_sources.Length][];
for (var i = 0; i < _sources.Length; i++)
{
var source = _sources[i];
_paths[i] = new Solution[_targets.Length];
for (var j = 0; j < _targets.Length; j++)
{
var target = _targets[j];
if (target.EdgeId == source.EdgeId)
{
var path = source.EdgePathTo(_routerDb, _weightHandler, target);
if (path != null)
{
_paths[i][j] = new Solution()
{
Path = path
};
}
}
}
}
// do forward searches into buckets.
for (var i = 0; i < _sources.Length; i++)
{
var forward = new Dykstra <T>(_graph, _weightHandler, _sources[i].ToEdgePaths(_routerDb, _weightHandler, true), false, _max);
forward.WasFound += (path) =>
{
return(this.ForwardVertexFound(i, path));
};
forward.Run(cancellationToken);
}
// do backward searches into buckets.
for (var i = 0; i < _targets.Length; i++)
{
var backward = new Dykstra <T>(_graph, _weightHandler, _targets[i].ToEdgePaths(_routerDb, _weightHandler, false), true, _max);
backward.WasFound += (path) =>
{
return(this.BackwardVertexFound(i, path));
};
backward.Run(cancellationToken);
}
this.HasSucceeded = true;
}
/// <summary>
/// Executes the actual run.
/// </summary>
protected override void DoRun()
{
// put in default weights and weights for one-edge-paths.
_weights = new T[_sources.Length][];
for (var i = 0; i < _sources.Length; i++)
{
var source = _sources[i];
_weights[i] = new T[_targets.Length];
for (var j = 0; j < _targets.Length; j++)
{
var target = _targets[j];
_weights[i][j] = _weightHandler.Infinite;
if (target.EdgeId == source.EdgeId)
{
var path = source.EdgePathTo(_routerDb, _weightHandler, target);
if (path != null)
{
_weights[i][j] = path.Weight;
}
}
}
}
// do forward searches into buckets.
for (var i = 0; i < _sources.Length; i++)
{
var forward = new Dykstra <T>(_graph, _weightHandler, _sources[i].ToEdgePaths(_routerDb, _weightHandler, true), false);
forward.WasFound += (vertex, weight) =>
{
return(this.ForwardVertexFound(i, vertex, weight));
};
forward.Run();
}
// do backward searches into buckets.
for (var i = 0; i < _targets.Length; i++)
{
var backward = new Dykstra <T>(_graph, _weightHandler, _targets[i].ToEdgePaths(_routerDb, _weightHandler, false), true);
backward.WasFound += (vertex, weight) =>
{
return(this.BackwardVertexFound(i, vertex, weight));
};
backward.Run();
}
this.HasSucceeded = true;
}
