NodeXLEdgeToGleeEdge
(
IEdge oEdge
)
{
Debug.Assert(oEdge != null);
AssertValid();
Object oValue = oEdge.GetRequiredValue(
ReservedMetadataKeys.SugiyamaGleeEdge,
typeof(Microsoft.Glee.Edge)
);
return ( (Microsoft.Glee.Edge)oValue );
}
GetEdgeWeight
(
IVertex vertex1,
IVertex vertex2
)
{
Debug.Assert(vertex1 != null);
Debug.Assert(vertex2 != null);
Double dEdgeWeight = 0;
// Get the edges that connect the two vertices. This includes all
// connecting edges and does not take directedness into account.
ICollection <IEdge> oConnectingEdges =
vertex1.GetConnectingEdges(vertex2);
Int32 iConnectingEdges = oConnectingEdges.Count;
IEdge oConnectingEdgeWithEdgeWeight = null;
switch (vertex1.ParentGraph.Directedness)
{
case GraphDirectedness.Directed:
// There can be 0, 1, or 2 edges between the vertices. Only
// one of them can originate at vertex1.
Debug.Assert(iConnectingEdges <= 2);
foreach (IEdge oConnectingEdge in oConnectingEdges)
{
if (oConnectingEdge.BackVertex == vertex1)
{
oConnectingEdgeWithEdgeWeight = oConnectingEdge;
break;
}
}
break;
case GraphDirectedness.Undirected:
// There can be 0 or 1 edges between the vertices. There can't
// be 2 edges, because the duplicate edges (A,B) and (B,A) have
// been merged.
Debug.Assert(iConnectingEdges <= 1);
if (iConnectingEdges == 1)
{
oConnectingEdgeWithEdgeWeight = oConnectingEdges.First();
}
break;
default:
Debug.Assert(false);
break;
}
if (oConnectingEdgeWithEdgeWeight != null)
{
dEdgeWeight = (Double)
oConnectingEdgeWithEdgeWeight.GetRequiredValue(
ReservedMetadataKeys.EdgeWeight, typeof(Double));
}
return(dEdgeWeight);
}