geos::planargraph::Subgraph Class Reference

A subgraph of a PlanarGraph. More...

#include <Subgraph.h>

Public Member Functions
	Subgraph (PlanarGraph &parent)
	Creates a new subgraph of the given PlanarGraph.
PlanarGraph &	getParent () const
	Gets the PlanarGraph which this subgraph is part of.
std::pair< std::set< Edge * >::iterator, bool >	add (Edge *e)
	Adds an Edge to the subgraph.
std::vector< constDirectedEdge * >::iterator	getDirEdgeBegin ()
	Returns an iterator over the DirectedEdge in this graph, in the order in which they were added.
std::set< Edge * >::iterator	edgeBegin ()
	Returns an iterator over the Edges in this graph, in the order in which they were added.
std::set< Edge * >::iterator	edgeEnd ()
NodeMap::container::iterator	nodeBegin ()
	Returns a iterators over the planar NodeMap::container in this graph.
NodeMap::container::const_iterator	nodeEnd () const
NodeMap::container::iterator	nodeEnd ()
NodeMap::container::const_iterator	nodeBegin () const
bool	contains (Edge *e)
	Tests whether an Edge is contained in this subgraph.

Protected Member Functions
	Subgraph (const Subgraph &other)=delete
Subgraph &	operator= (const Subgraph &rhs)=delete

Protected Attributes
PlanarGraph &	parentGraph
std::set< Edge * >	edges
std::vector< const DirectedEdge * >	dirEdges
NodeMap	nodeMap

Detailed Description

A subgraph of a PlanarGraph.

A subgraph may contain any subset of Edges from the parent graph. It will also automatically contain all DirectedEdges and Nodes associated with those edges. No new objects are created when edges are added - all associated components must already exist in the parent graph.

Note

Actually we'll be copying Coordinates in NodeMap. I guess that'll need to be changed soon.

Constructor & Destructor Documentation

Subgraph()

geos::planargraph::Subgraph::Subgraph ( PlanarGraph &  parent )

inline

Creates a new subgraph of the given PlanarGraph.

Parameters

parent

the parent graph

Member Function Documentation

add()

std::pair< std::set< Edge * >::iterator, bool > geos::planargraph::Subgraph::add

(

Edge *

e

)

Adds an Edge to the subgraph.

The associated DirectedEdges and Nodes are also added.

Parameters

e	the edge to add

Returns

a pair with first element being an iterator to the Edge in set and second element being a boolean value indicating whether the Edge has been inserted now or was already in the set.

contains()

bool geos::planargraph::Subgraph::contains ( Edge *  e )

inline

Tests whether an Edge is contained in this subgraph.

Parameters

e	the edge to test

Returns

true if the edge is contained in this subgraph

edgeBegin()

std::set< Edge * >::iterator geos::planargraph::Subgraph::edgeBegin ( )

inline

Returns an iterator over the Edges in this graph, in the order in which they were added.

Returns

an iterator over the edges

See also

Adding methods

getDirEdgeBegin()

std::vector< constDirectedEdge * >::iterator geos::planargraph::Subgraph::getDirEdgeBegin ( )

inline

Returns an iterator over the DirectedEdge in this graph, in the order in which they were added.

Returns

an iterator over the directed edges

See also

Adding methods

getParent()

PlanarGraph & geos::planargraph::Subgraph::getParent ( ) const

inline

Gets the PlanarGraph which this subgraph is part of.

Returns

the parent PlanarGraph

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The documentation for this class was generated from the following file:

• Subgraph.h