private GeneralLayoutEdge[] SplitEdge(GeneralLayoutEdge edgeToSplit, LayoutVertexBase interimVertex)
{
var newEdge1 = new GeneralLayoutEdge(edgeToSplit.Source, interimVertex, edgeToSplit.DiagramConnector);
var newEdge2 = new GeneralLayoutEdge(interimVertex, edgeToSplit.Target, edgeToSplit.DiagramConnector);
_properGraph.RemoveEdge(edgeToSplit);
_properGraph.AddVertex(interimVertex);
_properGraph.AddEdge(newEdge1);
_properGraph.AddEdge(newEdge2);
return(new[] { newEdge1, newEdge2 });
}
private GeneralLayoutEdge MergeEdges(GeneralLayoutEdge firstEdge, GeneralLayoutEdge nextEdge)
{
if (firstEdge.Target != nextEdge.Source)
{
throw new InvalidOperationException("Only consecutive edges can be merged.");
}
if (firstEdge.DiagramConnector != nextEdge.DiagramConnector)
{
throw new InvalidOperationException("Only edges of the same DiagramConnector can be merged.");
}
var mergedEdge = new GeneralLayoutEdge(firstEdge.Source, nextEdge.Target, firstEdge.DiagramConnector);
_properGraph.RemoveEdge(firstEdge);
_properGraph.RemoveEdge(nextEdge);
_properGraph.RemoveVertex(firstEdge.Target);
_properGraph.AddEdge(mergedEdge);
return(mergedEdge);
}
