SubDigraph< DGR, NF, AF > Class Template Reference

Detailed Description

template<typename DGR, typename NF, typename AF>
class lemon::SubDigraph< DGR, NF, AF >

SubDigraph can be used for hiding nodes and arcs in a digraph. A bool node map and a bool arc map must be specified, which define the filters for nodes and arcs. Only the nodes and arcs with true filter value are shown in the subdigraph. The arcs that are incident to hidden nodes are also filtered out. This adaptor conforms to the Digraph concept.

The adapted digraph can also be modified through this adaptor by adding or removing nodes or arcs, unless the GR template parameter is set to be const.

This class provides only linear time counting for nodes and arcs.

Template Parameters

DGR	The type of the adapted digraph. It must conform to the Digraph concept. It can also be specified to be const.
NF	The type of the node filter map. It must be a bool (or convertible) node map of the adapted digraph. The default type is DGR::NodeMap<bool>.
AF	The type of the arc filter map. It must be bool (or convertible) arc map of the adapted digraph. The default type is DGR::ArcMap<bool>.

Note

The Node and Arc types of this adaptor and the adapted digraph are convertible to each other.

See Also

FilterNodes

FilterArcs

#include <lemon/adaptors.h>

Public Types
typedef DGR	Digraph
	The type of the adapted digraph.
typedef NF	NodeFilterMap
	The type of the node filter map.
typedef AF	ArcFilterMap
	The type of the arc filter map.

Public Member Functions
	SubDigraph (DGR &digraph, NF &node_filter, AF &arc_filter)
	Constructor.
void	status (const Node &n, bool v) const
	Sets the status of the given node.
void	status (const Arc &a, bool v) const
	Sets the status of the given arc.
bool	status (const Node &n) const
	Returns the status of the given node.
bool	status (const Arc &a) const
	Returns the status of the given arc.
void	disable (const Node &n) const
	Disables the given node.
void	disable (const Arc &a) const
	Disables the given arc.
void	enable (const Node &n) const
	Enables the given node.
void	enable (const Arc &a) const
	Enables the given arc.

Related Functions
(Note that these are not member functions.)
template<typename DGR , typename NF , typename AF >
SubDigraph< const DGR, NF, AF >	subDigraph (const DGR &digraph, NF &node_filter, AF &arc_filter)
	Returns a read-only SubDigraph adaptor.

Constructor & Destructor Documentation

SubDigraph ( DGR &  digraph, NF &  node_filter, AF &  arc_filter  )

inline

Creates a subdigraph for the given digraph with the given node and arc filter maps.

Member Function Documentation

void status ( const Node &  n, bool  v  ) const

inline

This function sets the status of the given node. It is done by simply setting the assigned value of n to v in the node filter map.

void status ( const Arc &  a, bool  v  ) const

inline

This function sets the status of the given arc. It is done by simply setting the assigned value of a to v in the arc filter map.

bool status ( const Node &  n ) const

inline

This function returns the status of the given node. It is true if the given node is enabled (i.e. not hidden).

bool status ( const Arc &  a ) const

inline

This function returns the status of the given arc. It is true if the given arc is enabled (i.e. not hidden).

void disable ( const Node &  n ) const

inline

This function disables the given node in the subdigraph, so the iteration jumps over it. It is the same as status(n, false).

void disable ( const Arc &  a ) const

inline

This function disables the given arc in the subdigraph, so the iteration jumps over it. It is the same as status(a, false).

void enable ( const Node &  n ) const

inline

This function enables the given node in the subdigraph. It is the same as status(n, true).

void enable ( const Arc &  a ) const

inline

This function enables the given arc in the subdigraph. It is the same as status(a, true).