public Nodes dual() {
Graph graph = belongsTo();
Nodes vertices = graph.nodes(Node.Duality.hvert);
Nodes edges = graph.nodes(Node.Duality.hedge);
return (this == vertices) ? edges : (this == edges) ? vertices : this;
}
public Node.Duality duality() {
Graph graph = belongsTo();
Nodes vertices = graph.nodes(Node.Duality.hvert);
Nodes edges = graph.nodes(Node.Duality.hedge);
return (this == vertices)
? Node.Duality.hvert
: (this == edges) ? Node.Duality.hedge : Node.Duality.hvert;
}
public static String format(Graph graph) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("type", graph.type());
map.put("label", graph.label());
map.put("families", graph.factory().families().toArray());
if (graph.factory().contains(GraphFactory.Family.dual)) {
map.put("nodes:hvert", graph.nodes(Node.Duality.hvert));
map.put("hedge:hedge", graph.nodes(Node.Duality.hedge));
} else {
map.put("nodes", graph.nodes());
}
if (graph.factory().contains(GraphFactory.Family.fractal)) {
map.put("up", graph.up());
}
return format(map);
}