public void MergeVertex(TVertex v, EdgeFactory <TVertex, TEdge> edgeFactory)
{
Contract.Requires(GraphContract.InVertexSet(this, v));
Contract.Requires(edgeFactory != null);
// storing edges in local array
var inedges = this.vertexInEdges[v];
var outedges = this.vertexOutEdges[v];
// remove vertex
this.RemoveVertex(v);
// add edges from each source to each target
foreach (var source in inedges)
{
//is it a self edge
if (source.Source.Equals(v))
{
continue;
}
foreach (var target in outedges)
{
if (v.Equals(target.Target))
{
continue;
}
// we add an new edge
this.AddEdge(edgeFactory(source.Source, target.Target));
}
}
}