public override ISet <Edge> GetDirectSuccessorEdges(Vertex vertex)
{
HashSet <Edge> result = new();
foreach (Edge edge in vertex.GetConnectedEdges())
{
UndirectedEdge undirectedEdge = (UndirectedEdge)edge;
IList <Vertex> connectedVertices = undirectedEdge.ConnectedVertices;
bool sourceIsThis = connectedVertices[0].Equals(vertex);
bool targetIsThis = connectedVertices[1].Equals(vertex);
if (sourceIsThis && targetIsThis)
{
result.Add(edge);
}
else
{
if (sourceIsThis)
{
result.Add(edge);
}
if (targetIsThis)
{
result.Add(edge);
}
}
}
return(result);
}
/// <inheritdoc/>
public override void AddEdge(Edge edge)
{
if (!(edge is UndirectedEdge))
{
throw new InvalidEdgeTypeException($"{nameof(UndirectedGraph)}-objects can only have edges of type {nameof(UndirectedEdge)}");
}
UndirectedEdge undirectedEdge = (UndirectedEdge)edge;
List <Vertex> connectedVertices = undirectedEdge.ConnectedVertices.ToList();
this.AddCheck(edge, connectedVertices[0], connectedVertices[1]);
this._UndirectedEdges.Add((UndirectedEdge)edge);
this.OnEdgeAdded(edge);
}
public override bool Equals(object obj)
{
if (!base.Equals(obj))
{
return(false);
}
UndirectedEdge typedObject = (UndirectedEdge)obj;
if (!this.ConnectedVertices.NullSafeEnumerableEquals(typedObject.ConnectedVertices))
{
return(false);
}
return(true);
}
