#include <digraph.h>

Inheritance diagram for cluster< GraphTraits >:

Public Types
typedef GraphTraits::node_t	node_t

typedef GraphTraits::dump_args_t	dump_args_t

Public Member Functions
virtual	~cluster ()

virtual void	add_node (node_t *node)=0

virtual void	dump_dot (graphviz_out *gv, const dump_args_t &) const =0

Detailed Description

template<typename GraphTraits>
class cluster< GraphTraits >

Abstract base class for splitting dnodes into hierarchical clusters
in the generated .dot file.

See "Subgraphs and Clusters" within
  https://www.graphviz.org/doc/info/lang.html
and e.g.
  https://graphviz.gitlab.io/_pages/Gallery/directed/cluster.html

If a root_cluster is passed to dump_dot*, then all nodes will be
added to it at the start of dumping, via calls to add_node.

The root cluster can organize the nodes into a hierarchy of
child clusters.

After all nodes are added to the root cluster, dump_dot will then
be called on it (and not on the nodes themselves).