Class DijkstraShortestPathAlgorithm<TVertex, TEdge>

Dijkstra single source shortest path algorithm for directed graph with positive distance.

Inheritance
System.Object
AlgorithmBase<IVertexListGraph<TVertex, TEdge>>
RootedAlgorithmBase<TVertex, IVertexListGraph<TVertex, TEdge>>
ShortestPathAlgorithmBase<TVertex, TEdge, IVertexListGraph<TVertex, TEdge>>
DijkstraShortestPathAlgorithm<TVertex, TEdge>
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: QuikGraph.Algorithms.ShortestPath
Assembly: QuikGraph.dll
Syntax
public sealed class DijkstraShortestPathAlgorithm<TVertex, TEdge> : ShortestPathAlgorithmBase<TVertex, TEdge, IVertexListGraph<TVertex, TEdge>>, IAlgorithm<IVertexListGraph<TVertex, TEdge>>, IComputation, IAlgorithmComponent, IVertexColorizerAlgorithm<TVertex>, IDistancesCollection<TVertex>, IVertexPredecessorRecorderAlgorithm<TVertex, TEdge>, ITreeBuilderAlgorithm<TVertex, TEdge>, IDistanceRecorderAlgorithm<TVertex> where TEdge : IEdge<TVertex>
Type Parameters
Name Description
TVertex

Vertex type.
TEdge

Edge type.

Constructors

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DijkstraShortestPathAlgorithm(IAlgorithmComponent, IVertexListGraph<TVertex, TEdge>, Func<TEdge, Double>, IDistanceRelaxer)

Initializes a new instance of the DijkstraShortestPathAlgorithm<TVertex, TEdge> class.

Declaration
public DijkstraShortestPathAlgorithm(IAlgorithmComponent host, IVertexListGraph<TVertex, TEdge> visitedGraph, Func<TEdge, double> edgeWeights, IDistanceRelaxer distanceRelaxer)
Parameters
Type Name Description
IAlgorithmComponent host

Host to use if set, otherwise use this reference.
IVertexListGraph<TVertex, TEdge> visitedGraph

Graph to visit.
System.Func<TEdge, System.Double> edgeWeights

Function that computes the weight for a given edge.
IDistanceRelaxer distanceRelaxer

Distance relaxer.
Exceptions
Type Condition
System.ArgumentNullException

visitedGraph is null.
System.ArgumentNullException

edgeWeights is null.
System.ArgumentNullException

distanceRelaxer is null.
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DijkstraShortestPathAlgorithm(IVertexListGraph<TVertex, TEdge>, Func<TEdge, Double>)

Initializes a new instance of the DijkstraShortestPathAlgorithm<TVertex, TEdge> class.

Declaration
public DijkstraShortestPathAlgorithm(IVertexListGraph<TVertex, TEdge> visitedGraph, Func<TEdge, double> edgeWeights)
Parameters
Type Name Description
IVertexListGraph<TVertex, TEdge> visitedGraph

Graph to visit.
System.Func<TEdge, System.Double> edgeWeights

Function that computes the weight for a given edge.
Exceptions
Type Condition
System.ArgumentNullException

visitedGraph is null.
System.ArgumentNullException

edgeWeights is null.
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DijkstraShortestPathAlgorithm(IVertexListGraph<TVertex, TEdge>, Func<TEdge, Double>, IDistanceRelaxer)

Initializes a new instance of the DijkstraShortestPathAlgorithm<TVertex, TEdge> class.

Declaration
public DijkstraShortestPathAlgorithm(IVertexListGraph<TVertex, TEdge> visitedGraph, Func<TEdge, double> edgeWeights, IDistanceRelaxer distanceRelaxer)
Parameters
Type Name Description
IVertexListGraph<TVertex, TEdge> visitedGraph

Graph to visit.
System.Func<TEdge, System.Double> edgeWeights

Function that computes the weight for a given edge.
IDistanceRelaxer distanceRelaxer

Distance relaxer.
Exceptions
Type Condition
System.ArgumentNullException

visitedGraph is null.
System.ArgumentNullException

edgeWeights is null.
System.ArgumentNullException

distanceRelaxer is null.

Methods

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Initialize()

Called on algorithm initialization step.

Declaration
protected override void Initialize()
Overrides
QuikGraph.Algorithms.ShortestPath.ShortestPathAlgorithmBase<TVertex, TEdge, QuikGraph.IVertexListGraph<TVertex, TEdge>>.Initialize()
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InternalCompute()

Algorithm compute step.

Declaration
protected override void InternalCompute()
Overrides
QuikGraph.Algorithms.AlgorithmBase<QuikGraph.IVertexListGraph<TVertex, TEdge>>.InternalCompute()

Events

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DiscoverVertex

Fired when a vertex is discovered.

Declaration
public event VertexAction<TVertex> DiscoverVertex
Event Type
Type Description
VertexAction<TVertex>
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EdgeNotRelaxed

Fired when relax of an edge does not decrease distance.

Declaration
public event EdgeAction<TVertex, TEdge> EdgeNotRelaxed
Event Type
Type Description
EdgeAction<TVertex, TEdge>
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ExamineEdge

Fired when an edge is going to be analyzed.

Declaration
public event EdgeAction<TVertex, TEdge> ExamineEdge
Event Type
Type Description
EdgeAction<TVertex, TEdge>
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ExamineVertex

Fired when a vertex is going to be analyzed.

Declaration
public event VertexAction<TVertex> ExamineVertex
Event Type
Type Description
VertexAction<TVertex>
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FinishVertex

Fired when a vertex is fully treated.

Declaration
public event VertexAction<TVertex> FinishVertex
Event Type
Type Description
VertexAction<TVertex>
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InitializeVertex

Fired when a vertex is initialized.

Declaration
public event VertexAction<TVertex> InitializeVertex
Event Type
Type Description
VertexAction<TVertex>
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StartVertex

Fired on a starting vertex once before the start of the search from it.

Declaration
public event VertexAction<TVertex> StartVertex
Event Type
Type Description
VertexAction<TVertex>

Implements

Extension Methods