/// <summary>
/// Removes a node from the graph, along with any associated DirectedEdges and Edges.
/// </summary>
public void Remove(Node node)
{
// unhook all directed edges
ArrayList outEdges = node.OutEdges.Edges;
for (IEnumerator i = outEdges.GetEnumerator(); i.MoveNext();)
{
DirectedEdge de = (DirectedEdge)i.Current;
DirectedEdge sym = de.Sym;
// remove the diredge that points to this node
if (sym != null)
{
Remove(sym);
}
// remove this diredge from the graph collection
dirEdges.Remove(de);
Edge edge = de.Edge;
if (edge != null)
{
m_arrEdges.Remove(edge);
}
}
// remove the node from the graph
nodeMap.Remove(node.Coordinate);
node.Remove();
}