/// <summary>
/// Tests if a edge is part of the graph
/// </summary>
/// <param name="e">Edge to test</param>
/// <returns>true if is part of the graph, false otherwize</returns>
public bool ContainsEdge(IEdge e)
{
foreach (DictionaryEntry di in VertexOutEdges)
{
EdgeCollection es = (EdgeCollection)di.Value;
if (es.Contains(e))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Removes an edge from the graph.
///
/// Complexity: 2 edges removed from the vertex edge list + 1 edge
/// removed from the edge list.
/// </summary>
/// <param name="e">edge to remove</param>
/// <exception cref="ArgumentNullException">e is null</exception>
public virtual void RemoveEdge(IEdge e)
{
if (e == null)
{
throw new ArgumentNullException("edge");
}
// removing edge from vertices
EdgeCollection outEdges = VertexOutEdges[e.Source];
if (outEdges == null || !outEdges.Contains(e))
{
throw new EdgeNotFoundException();
}
outEdges.Remove(e);
}
/// <summary>
/// Removes an edge from the graph.
///
/// Complexity: 2 edges removed from the vertex edge list + 1 edge
/// removed from the edge list.
/// </summary>
/// <param name="e">edge to remove</param>
/// <exception cref="ArgumentNullException">e is null</exception>
public override void RemoveEdge(IEdge e)
{
if (e == null)
{
throw new ArgumentNullException("edge");
}
base.RemoveEdge(e);
EdgeCollection inEdges = VertexInEdges[e.Target];
if (inEdges == null || !inEdges.Contains(e))
{
throw new EdgeNotFoundException();
}
inEdges.Remove(e);
}
int[,] CreateMatrix()
{
int[,] array = new int[this.Controls.Count - 1, this.Controls.Count - 1];
for (int i = 0; i < array.GetLength(0); i++)
{
for (int j = 0; j < array.GetLength(0); j++)
{
if (_edges.Contains(new Edge(i + 1, j + 1), this.IsUndirectedGraph))
{
array[i, j] = GetDistance(this.Controls[i + 1].Location, this.Controls[j + 1].Location);
}
else if (i != j)
{
array[i, j] = -1;
}
}
}
return(array);
}
/// <summary>
/// Tests if a edge is part of the graph
/// </summary>
/// <param name="v">Edge to test</param>
/// <returns>true if is part of the graph, false otherwize</returns>
public bool ContainsEdge(IEdge v)
{
return(m_Edges.Contains(v));
}