/// <summary> Adds an {@link Edge} to the subgraph.
/// The associated {@link DirectedEdge}s and {@link Node}s
/// are also added.
///
/// </summary>
/// <param name="e">the edge to add
/// </param>
public void Add(Edge e)
{
if (edges.Contains(e))
{
return;
}
edges.Add(e);
dirEdges.Add(e.GetDirEdge(0));
dirEdges.Add(e.GetDirEdge(1));
nodeMap.Add(e.GetDirEdge(0).FromNode);
nodeMap.Add(e.GetDirEdge(1).FromNode);
}
/// <summary>
/// Adds a node to the map, replacing any that is already at that location.
/// Only subclasses can Add Nodes, to ensure Nodes are of the right type.
/// </summary>
/// <returns> The added node.</returns>
protected void Add(Node node)
{
nodeMap.Add(node);
}