Creates a reduced graph by removing leaves, self-loops, and reducing chains. More...

#include <ogdf/graphalg/GraphReduction.h>

Inheritance diagram for ogdf::GraphReduction:

Public Member Functions
	GraphReduction (const Graph &G)

virtual	~GraphReduction ()

const Graph &	original () const

const List< edge > &	original (edge e) const

node	original (node v) const

edge	reduction (edge e) const

node	reduction (node v) const

Public Member Functions inherited from ogdf::Graph
	Graph ()
	Constructs an empty graph. More...

	Graph (const Graph &copy)
	Constructs a graph that is a copy of `G`. More...

	Graph (Graph &&move)=delete

virtual	~Graph ()
	Destructor. More...

Graph &	operator= (const Graph &copy)
	Overwrites this graph to be a copy of `G`. More...

Graph &	operator= (Graph &&move)=delete

bool	empty () const
	Returns true iff the graph is empty, i.e., contains no nodes. More...

int	numberOfNodes () const
	Returns the number of nodes in the graph. More...

int	numberOfEdges () const
	Returns the number of edges in the graph. More...

int	maxNodeIndex () const
	Returns the largest used node index. More...

int	maxEdgeIndex () const
	Returns the largest used edge index. More...

int	maxAdjEntryIndex () const
	Returns the largest used adjEntry index. More...

node	firstNode () const
	Returns the first node in the list of all nodes. More...

node	lastNode () const
	Returns the last node in the list of all nodes. More...

edge	firstEdge () const
	Returns the first edge in the list of all edges. More...

edge	lastEdge () const
	Returns the last edge in the list of all edges. More...

node	chooseNode (std::function< bool(node)> includeNode=[](node) { return true;}, bool isFastTest=true) const
	Returns a random node. More...

edge	chooseEdge (std::function< bool(edge)> includeEdge=[](edge) { return true;}, bool isFastTest=true) const
	Returns a random edge. More...

template<class CONTAINER >
void	allNodes (CONTAINER &nodeContainer) const
	Returns a container with all nodes of the graph. More...

template<class CONTAINER >
void	allEdges (CONTAINER &edgeContainer) const
	Returns a container with all edges of the graph. More...

node	newNode (int index=-1)
	Creates a new node and returns it. More...

edge	newEdge (node v, node w, int index=-1)
	Creates a new edge (`v`,`w`) and returns it. More...

edge	newEdge (node v, adjEntry adjTgt, int index=-1)
	Creates a new edge at predefined positions in the adjacency lists. More...

edge	newEdge (adjEntry adjSrc, node w, int index=-1)
	Creates a new edge at predefined positions in the adjacency lists. More...

edge	newEdge (adjEntry adjSrc, adjEntry adjTgt, Direction dir=Direction::after, int index=-1)
	Creates a new edge at predefined positions in the adjacency lists. More...

template<typename S , typename T >
edge	newEdge (S src, Direction dirSrc, T tgt, Direction dirTgt, int index=-1)
	Creates a new edge at predefined positions in the adjacency lists. More...

virtual void	delNode (node v)
	Removes node `v` and all incident edges from the graph. More...

virtual void	delEdge (edge e)
	Removes edge `e` from the graph. More...

virtual void	clear ()
	Removes all nodes and all edges from the graph. More...

void	restoreAllEdges ()
	Restore all hidden edges and invalidate all HiddenEdgeSets. More...

virtual edge	split (edge e)
	Splits edge `e` into two edges introducing a new node. More...

void	unsplit (node u)
	Undoes a split operation. More...

virtual void	unsplit (edge eIn, edge eOut)
	Undoes a split operation. More...

node	splitNode (adjEntry adjStartLeft, adjEntry adjStartRight)
	Splits a node while preserving the order of adjacency entries. More...

node	contract (edge e, bool keepSelfLoops=false)
	Contracts edge `e` while preserving the order of adjacency entries. More...

void	move (edge e, adjEntry adjSrc, Direction dirSrc, adjEntry adjTgt, Direction dirTgt)
	Moves edge `e` to a different adjacency list. More...

void	moveTarget (edge e, node w)
	Moves the target node of edge `e` to node `w`. More...

void	moveTarget (edge e, adjEntry adjTgt, Direction dir)
	Moves the target node of edge `e` to a specific position in an adjacency list. More...

void	moveSource (edge e, node w)
	Moves the source node of edge `e` to node `w`. More...

void	moveSource (edge e, adjEntry adjSrc, Direction dir)
	Moves the source node of edge `e` to a specific position in an adjacency list. More...

edge	searchEdge (node v, node w, bool directed=false) const
	Searches and returns an edge connecting nodes `v` and `w` in time O( min(deg(`v` ), deg(`w` ))). More...

void	reverseEdge (edge e)
	Reverses the edge `e`, i.e., exchanges source and target node. More...

void	reverseAllEdges ()
	Reverses all edges in the graph. More...

template<class NODELIST >
void	collapse (NODELIST &nodesToCollapse)
	Collapses all nodes in the list `nodesToCollapse` to the first node in the list. More...

template<class ADJ_ENTRY_LIST >
void	sort (node v, const ADJ_ENTRY_LIST &newOrder)
	Sorts the adjacency list of node `v` according to `newOrder`. More...

template<class IT >
void	sort (node v, IT begin, IT end)
	Sorts the adjacency list of node `v` according to the range denoted by two iterators. More...

void	reverseAdjEdges (node v)
	Reverses the adjacency list of `v`. More...

void	moveAdj (adjEntry adjMove, Direction dir, adjEntry adjPos)
	Moves adjacency entry `adjMove` before or after `adjPos`. More...

void	moveAdjAfter (adjEntry adjMove, adjEntry adjAfter)
	Moves adjacency entry `adjMove` after `adjAfter`. More...

void	moveAdjBefore (adjEntry adjMove, adjEntry adjBefore)
	Moves adjacency entry `adjMove` before `adjBefore`. More...

void	reverseAdjEdges ()
	Reverses all adjacency lists. More...

void	swapAdjEdges (adjEntry adj1, adjEntry adj2)
	Exchanges two entries in an adjacency list. More...

int	genus () const
	Returns the genus of the graph's embedding. More...

bool	representsCombEmbedding () const
	Returns true iff the graph represents a combinatorial embedding. More...

void	consistencyCheck () const
	Asserts that this graph is consistent. More...

internal::GraphNodeRegistry &	nodeRegistry ()
	Returns a reference to the registry of node arrays associated with this graph. More...

const internal::GraphNodeRegistry &	nodeRegistry () const
	Returns a const reference to the registry of node arrays associated with this graph. More...

	operator const internal::GraphNodeRegistry & () const

internal::GraphEdgeRegistry &	edgeRegistry ()
	Returns a reference to the registry of edge arrays associated with this graph. More...

const internal::GraphEdgeRegistry &	edgeRegistry () const
	Returns a const reference to the registry of edge arrays associated with this graph. More...

	operator const internal::GraphEdgeRegistry & () const

internal::GraphAdjRegistry &	adjEntryRegistry ()
	Returns a reference to the registry of adjEntry arrays associated with this graph. More...

const internal::GraphAdjRegistry &	adjEntryRegistry () const
	Returns a const reference to the registry of adjEntry arrays associated with this graph. More...

	operator const internal::GraphAdjRegistry & () const

void	resetEdgeIdCount (int maxId)
	Resets the edge id count to `maxId`. More...

void	resetNodeIdCount (int maxId)

template<OGDF_NODE_ITER NI, OGDF_EDGE_ITER EI, bool copyEmbedding = true, bool copyIDs = false, bool notifyObservers = true>
std::pair< int, int >	insert (const NI &nodesBegin, const NI &nodesEnd, const EI &edgesBegin, const EI &edgesEnd, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given subgraph into this graph. More...

template<OGDF_NODE_ITER NI, OGDF_EDGE_FILTER EF, bool copyIDs = false, bool notifyObservers = true>
std::pair< int, int >	insert (const NI &nodesBegin, const NI &nodesEnd, const EF &edgeFilter, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given subgraph into this graph. More...

template<OGDF_NODE_LIST NL>
std::pair< int, int >	insert (const NL &nodeList, const EdgeSet< true > &edgeSet, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given subgraph into this graph. More...

template<OGDF_NODE_LIST NL>
std::pair< int, int >	insert (const NL &nodeList, const EdgeSet< false > &edgeSet, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given subgraph into this graph. More...

template<OGDF_NODE_LIST NL, OGDF_EDGE_LIST EL>
std::pair< int, int >	insert (const NL &nodeList, const EL &edgeList, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given subgraph into this graph. More...

std::pair< int, int >	insert (const CCsInfo &info, int cc, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given connected component `cc` into this graph. More...

std::pair< int, int >	insert (const Graph &G, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap)
	Inserts a copy of a given Graph `G` into this graph. More...

std::pair< int, int >	insert (const Graph &G)
	Inserts a copy of a given Graph `G` into this graph. More...

Public Member Functions inherited from ogdf::Observable< GraphObserver, Graph >
	Observable ()=default

	Observable (const Observable &copy)=delete
	If you want to copy a subclass of Observable, call the default Observable() constructor. More...

	Observable (Observable &&move)=delete
	If you want to move a subclass of Observable, call the default Observable() constructor. More...

virtual	~Observable ()

Observable &	operator= (const Observable &copy)=delete

Observable &	operator= (Observable &&move)=delete

Protected Member Functions
	GraphReduction ()

Protected Member Functions inherited from ogdf::Graph
virtual void *	preInsert (bool copyEmbedding, bool copyIDs, bool notifyObservers, bool edgeFilter, NodeArray< node > &nodeMap, EdgeArray< edge > &edgeMap, int newNodes, int newEdges)
	Callback notifying subclasses that some graph is about to be insert() -ed. More...

virtual void	nodeInserted (void *userData, node original, node copy)
	Callback notifying subclasses that insert() copied a node. More...

virtual void	edgeInserted (void *userData, edge original, edge copy)
	Callback notifying subclasses that insert() copied an edge. More...

virtual void	postInsert (void *userData, int newNodes, int newEdges)
	Callback notifying subclasses that an insert() call has finished. More...

Protected Member Functions inherited from ogdf::Observable< GraphObserver, Graph >
void	clearObservers ()

const ListPure< GraphObserver * > &	getObservers () const

Protected Attributes
EdgeArray< List< edge > >	m_eOrig

EdgeArray< edge >	m_eReduction

const Graph *	m_pGraph

NodeArray< node >	m_vOrig

NodeArray< node >	m_vReduction

Additional Inherited Members
Public Types inherited from ogdf::Graph
enum	EdgeType { EdgeType::association = 0, EdgeType::generalization = 1, EdgeType::dependency = 2 }
	The type of edges (only used in derived classes). More...

enum	NodeType { NodeType::vertex = 0, NodeType::dummy = 1, NodeType::generalizationMerger = 2, NodeType::generalizationExpander = 3, NodeType::highDegreeExpander = 4, NodeType::lowDegreeExpander = 5, NodeType::associationClass = 6 }
	The type of nodes. More...

using	node_iterator = internal::GraphIterator< node >
	Provides a bidirectional iterator to a node in a graph. More...

using	edge_iterator = internal::GraphIterator< edge >
	Provides a bidirectional iterator to an edge in a graph. More...

using	adjEntry_iterator = internal::GraphIterator< adjEntry >
	Provides a bidirectional iterator to an entry in an adjacency list. More...

Public Attributes inherited from ogdf::Graph
internal::GraphObjectContainer< NodeElement >	nodes
	The container containing all node objects. More...

internal::GraphObjectContainer< EdgeElement >	edges
	The container containing all edge objects. More...

Detailed Description

Creates a reduced graph by removing leaves, self-loops, and reducing chains.

GraphReduction is read-only !!!

Definition at line 49 of file GraphReduction.h.

Constructor & Destructor Documentation

◆ GraphReduction() [1/2]

ogdf::GraphReduction::GraphReduction ( )

inlineprotected

Definition at line 58 of file GraphReduction.h.

◆ GraphReduction() [2/2]

ogdf::GraphReduction::GraphReduction ( const Graph & G )

explicit

◆ ~GraphReduction()

virtual ogdf::GraphReduction::~GraphReduction ( )

inlinevirtual

Definition at line 64 of file GraphReduction.h.

Member Function Documentation

◆ original() [1/3]

const Graph& ogdf::GraphReduction::original ( ) const

inline

Definition at line 67 of file GraphReduction.h.

◆ original() [2/3]

const List<edge>& ogdf::GraphReduction::original ( edge e ) const

inline

Definition at line 73 of file GraphReduction.h.

◆ original() [3/3]

node ogdf::GraphReduction::original ( node v ) const

inline

Definition at line 70 of file GraphReduction.h.

◆ reduction() [1/2]

edge ogdf::GraphReduction::reduction ( edge e ) const

inline

Definition at line 79 of file GraphReduction.h.

◆ reduction() [2/2]

node ogdf::GraphReduction::reduction ( node v ) const

inline

Definition at line 76 of file GraphReduction.h.

Member Data Documentation

◆ m_eOrig

EdgeArray<List<edge> > ogdf::GraphReduction::m_eOrig

protected

Definition at line 53 of file GraphReduction.h.

◆ m_eReduction

EdgeArray<edge> ogdf::GraphReduction::m_eReduction

protected

Definition at line 56 of file GraphReduction.h.

◆ m_pGraph

const Graph* ogdf::GraphReduction::m_pGraph

protected

Definition at line 51 of file GraphReduction.h.

◆ m_vOrig

NodeArray<node> ogdf::GraphReduction::m_vOrig

protected

Definition at line 52 of file GraphReduction.h.

◆ m_vReduction

NodeArray<node> ogdf::GraphReduction::m_vReduction

protected

Definition at line 55 of file GraphReduction.h.

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

include/ogdf/graphalg/GraphReduction.h

OpenGraph DrawingFramework

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GraphReduction() [1/2]

◆ GraphReduction() [2/2]

◆ ~GraphReduction()

Member Function Documentation

◆ original() [1/3]

◆ original() [2/3]

◆ original() [3/3]

◆ reduction() [1/2]

◆ reduction() [2/2]

Member Data Documentation

◆ m_eOrig

◆ m_eReduction

◆ m_pGraph

◆ m_vOrig

◆ m_vReduction

Open
Graph Drawing
Framework