private void RegisterAggregationCallbacks()
{
Graph.NodeCreated += (sender, args) => {
if (AggregateGraph.IsAggregationItem(args.Item))
{
// add a label with the number of aggregated items to the new aggregation node
Graph.AddLabel(args.Item, AggregateGraph.GetAggregatedItems(args.Item).Count.ToString());
}
};
Graph.EdgeCreated += (sender, args) => {
var edge = args.Item;
if (!AggregateGraph.IsAggregationItem(edge))
{
return;
}
// add a label with the number of all original aggregated edges represented by the new aggregation edge
var aggregatedEdgesCount = AggregateGraph.GetAllAggregatedOriginalItems(edge).Count;
if (aggregatedEdgesCount > 1)
{
Graph.AddLabel(edge, aggregatedEdgesCount.ToString());
}
// set the thickness to the number of aggregated edges
Graph.SetStyle(edge,
new PolylineEdgeStyle {
Pen = new Pen(Brushes.Gray, 1 + aggregatedEdgesCount)
});
};
}
