// Show only nodes which can reach the target cluster
private GraphPresentation ReduceGraph(Cluster targetCluster, RelaxedGraphBuilder builder)
{
var presentation = new GraphPresentation();
presentation.Graph = builder.Graph;
var algo = new AddRemoveTransitiveHull(presentation);
algo.Add = false;
algo.Reverse = true;
var mask = algo.Compute(targetCluster.Nodes);
mask.Invert(presentation);
presentation.Masks().Push(mask);
presentation.Masks().Push(new RemoveNodesWithoutSiblings(presentation).Compute());
return(presentation);
}
