public static void GraphHasCorrectNumberOfEdges <K, T>(int expectedEdges, List <GraphVertex <K, T> > graph)
where K : IUnfoldableEdge
where T : IUnfoldablePlanarFace <K>
{
var alledges = GraphUtilities.GetAllGraphEdges(graph);
Assert.AreEqual(expectedEdges, alledges.Count);
Console.WriteLine("correct number of edges");
}
// Method to remove this graphvertex from graph and to remove all edges which point to it
// from other nodes in the graphT
public void RemoveFromGraph(List <GraphVertex <K, T> > graph)
{
//collect all edges
var allGraphEdges = GraphUtilities.GetAllGraphEdges(graph);
var edgesToRemove = new List <GraphEdge <K, T> >();
// mark all edges we need to remove
foreach (var edge in allGraphEdges)
{
if (edge.Head == this)
{
edgesToRemove.Add(edge);
}
}
// iterate the graph again, if during traversal we see
// a marked edge, remove it
foreach (var vertex in graph)
{
vertex.GraphEdges.ExceptWith(edgesToRemove);
}
//finally remove the node
graph.Remove(this);
}