BaseGraphComponent Class Reference

Detailed Description

This class describes the base interface of undirected graph types. All graph concepts have to conform to this class. It extends the interface of BaseDigraphComponent with an Edge type and functions to get the end nodes of edges, to convert from arcs to edges and to get both direction of edges.

#include <lemon/concepts/graph_components.h>

Inheritance diagram for BaseGraphComponent:

Classes
class	Edge
	Undirected edge class of the graph. More...

Public Member Functions
Node	u (const Edge &) const
	Return one end node of an edge.
Node	v (const Edge &) const
	Return the other end node of an edge.
Arc	direct (const Edge &, bool) const
	Return a directed arc related to an edge.
Arc	direct (const Edge &, const Node &) const
	Return a directed arc related to an edge.
bool	direction (const Arc &) const
	Return the direction of the arc.
Arc	oppositeArc (const Arc &) const
	Return the opposite arc.
Public Member Functions inherited from BaseDigraphComponent
Node	source (const Arc &) const
	Return the source node of an arc.
Node	target (const Arc &) const
	Return the target node of an arc.
Node	oppositeNode (const Node &, const Arc &) const
	Return the opposite node on the given arc.

Additional Inherited Members
Public Types inherited from BaseDigraphComponent
typedef GraphItem< 'n'>	Node
	Node class of the digraph.
typedef GraphItem< 'a'>	Arc
	Arc class of the digraph.

Member Function Documentation

u()

Node u ( const Edge & ) const

inline

This function returns one end node of an edge.

v()

Node v ( const Edge & ) const

inline

This function returns the other end node of an edge.

direct() [1/2]

Arc direct ( const Edge & , bool  ) const

inline

This function returns a directed arc from its direction and the represented edge.

direct() [2/2]

Arc direct ( const Edge & , const Node &  ) const

inline

This function returns a directed arc from its source node and the represented edge.

direction()

bool direction ( const Arc & ) const

inline

Returns the direction of the arc. Each arc represents an edge with a direction. It gives back the direction.

oppositeArc()

Arc oppositeArc ( const Arc & ) const

inline

This function returns the opposite arc, i.e. the arc representing the same edge and has opposite direction.