/// <summary>
/// Adds an existing vertex to the cluster
/// </summary>
/// <param name="v">vertex to add</param>
public virtual void AddVertex(IVertex v)
{
if (v == null)
{
throw new ArgumentNullException("v");
}
if (Parent != null && !Parent.ContainsVertex(v))
{
Parent.AddVertex(v);
}
Wrapped.AddVertex(v);
}
/// <summary>
/// Adds a vertex to this graph.
/// </summary>
/// <param name="vertex">Vertex to add.</param>
/// <returns>True if the vertex was added, false otherwise.</returns>
public virtual bool AddVertex([NotNull] TVertex vertex)
{
if (vertex == null)
{
throw new ArgumentNullException(nameof(vertex));
}
if (!(Parent is null || Parent.ContainsVertex(vertex)))
{
Parent.AddVertex(vertex);
return(Wrapped.AddVertex(vertex));
}
return(Wrapped.AddVertex(vertex));
}
/// <summary>
/// Adds a new vertex to the cluster
/// </summary>
/// <returns>new vertex</returns>
public virtual IVertex AddVertex()
{
if (Parent != null)
{
// add new vertex in the parent
IVertex v = Parent.AddVertex();
// add new vertex in the cluster
Wrapped.AddVertex(v);
// return vertex
return(v);
}
else
{
return(Wrapped.AddVertex());
}
}
