Data type for general directed graphs (adjacency list representation). More...

#include <ogdf/basic/Graph_d.h>

Inheritance diagram for ogdf::Graph:

Classes
class	CCsInfo
	Info structure for maintaining connected components. More...

class	HiddenEdgeSet
	Functionality for temporarily hiding edges in constant time. More...

Public Types
Enumerations
These enumerations are mainly meant for advanced or internal usage scenarios.
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...

Iterators
These types are used for graph object iterators, which are returned by graph object containers like nodes and edges.
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 Member Functions
	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

Access methods
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...

Creation of new nodes and edges
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...

Removing nodes and edges
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...

Advanced modification methods
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...

Miscellaneous
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...

Registering arrays and observers
These methods are used by various graph array types like NodeArray or EdgeArray. There should be no need to use them directly in user code.
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)

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

Public Attributes
Graph object containers
These containers maintain the nodes and edges of the graph, and provide node and edge iterators.
internal::GraphObjectContainer< NodeElement >	nodes
	The container containing all node objects. More...

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

Private Member Functions
void	moveAdj (adjEntry adj, node w)
	moves adjacency entry to node w More...

edge	pureNewEdge (node src, node tgt, int index)
	Creates a new edge object with id `index` and corresponding AdjElements and adds it to the list of edges. More...

node	pureNewNode (int index)
	Creates a new node object with id `index` and adds it to the list of nodes. More...

Static Private Member Functions
static void	insertAdjEntry (adjEntry oldAdj, adjEntry newAdj, Direction dir)

static void	insertAdjEntry (node n, adjEntry newAdj, Direction dir)

Private Attributes
int	m_edgeIdCount
	The Index that will be assigned to the next created edge. More...

List< HiddenEdgeSet * >	m_hiddenEdgeSets
	The list of hidden edges. More...

int	m_nodeIdCount
	The Index that will be assigned to the next created node. More...

internal::GraphAdjRegistry	m_regAdjArrays
	The registered adjEntry arrays. More...

internal::GraphEdgeRegistry	m_regEdgeArrays
	The registered edge arrays. More...

internal::GraphNodeRegistry	m_regNodeArrays
	The registered node arrays. More...

Friends
class	GraphObserver

Subgraph insertion
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...

template<OGDF_NODE_ITER NI, bool notifyObservers, bool copyIDs>
void	insertNodes (const NI &nodesBegin, const NI &nodesEnd, NodeArray< node, true > &nodeMap, int &newNodes, void *cbData)

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...

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

const ListPure< GraphObserver * > &	getObservers () const

Detailed Description

Data type for general directed graphs (adjacency list representation).

In embedded graphs, adjacency lists are given in clockwise order.

Thread Safety

The class Graph allows shared access of threads to const methods only. If one thread executes a non-const method, shared access is no longer thread-safe.

Iteration

You may iterate over the nodes and edges of a graph using C++11 range-based for loops. Find some examples below.

Iterate over all nodes v of graph G using c++11 syntax :
for(node v : G.nodes) {

// do stuff with node v

}
Iterate over all nodes v of graph G :
for(node v = G.firstNode(); v != nullptr; v = v->succ()) {

// do stuff with node v

}
Iterate over all edges e of graph G using c++11 syntax :
for(edge e : G.edges) {

// do stuff with node v

}
Iterate over all incident edges of node v using c++11 syntax:
for(adjEntry adj : v->adjEntries) {

edge e = adj->theEdge();

// do stuff with edge e

}

Definition at line 869 of file Graph_d.h.

Member Typedef Documentation

◆ adjEntry_iterator

using ogdf::Graph::adjEntry_iterator = internal::GraphIterator<adjEntry>

Provides a bidirectional iterator to an entry in an adjacency list.

Definition at line 899 of file Graph_d.h.

◆ edge_iterator

using ogdf::Graph::edge_iterator = internal::GraphIterator<edge>

Provides a bidirectional iterator to an edge in a graph.

Definition at line 897 of file Graph_d.h.

◆ node_iterator

using ogdf::Graph::node_iterator = internal::GraphIterator<node>

Provides a bidirectional iterator to a node in a graph.

Definition at line 895 of file Graph_d.h.

Member Enumeration Documentation

◆ EdgeType

enum ogdf::Graph::EdgeType

strong

The type of edges (only used in derived classes).

Enumerator
association
generalization
dependency

Definition at line 909 of file Graph_d.h.

◆ NodeType

enum ogdf::Graph::NodeType

strong

The type of nodes.

Enumerator
vertex
dummy
generalizationMerger
generalizationExpander
highDegreeExpander
lowDegreeExpander
associationClass

Definition at line 912 of file Graph_d.h.

Constructor & Destructor Documentation

◆ Graph() [1/3]

ogdf::Graph::Graph ( )

Constructs an empty graph.

◆ Graph() [2/3]

ogdf::Graph::Graph ( const Graph & copy )

Constructs a graph that is a copy of G.

The constructor assures that the adjacency lists of nodes in the constructed graph are in the same order as the adjacency lists in G. This is in particular important when dealing with embedded graphs.

Parameters

copy	is the graph that will be copied.

See also: insert()

◆ Graph() [3/3]

ogdf::Graph::Graph ( Graph && move )

delete

◆ ~Graph()

virtual ogdf::Graph::~Graph ( )

virtual

Destructor.

Member Function Documentation

◆ adjEntryRegistry() [1/2]

internal::GraphAdjRegistry& ogdf::Graph::adjEntryRegistry ( )

inline

Returns a reference to the registry of adjEntry arrays associated with this graph.

Definition at line 1641 of file Graph_d.h.

◆ adjEntryRegistry() [2/2]

const internal::GraphAdjRegistry& ogdf::Graph::adjEntryRegistry ( ) const

inline

Returns a const reference to the registry of adjEntry arrays associated with this graph.

Definition at line 1644 of file Graph_d.h.

◆ allEdges()

template<class CONTAINER >

void ogdf::Graph::allEdges ( CONTAINER & edgeContainer ) const

inline

Returns a container with all edges of the graph.

Template Parameters

CONTAINER is the type of the edge container which is returned.

Parameters

edgeContainer is assigned the list of all edges.

Definition at line 1046 of file Graph_d.h.

◆ allNodes()

template<class CONTAINER >

void ogdf::Graph::allNodes ( CONTAINER & nodeContainer ) const

inline

Returns a container with all nodes of the graph.

Template Parameters

CONTAINER is the type of node container which is returned.

Parameters

nodeContainer is assigned the container of all nodes.

Definition at line 1036 of file Graph_d.h.

◆ chooseEdge()

edge ogdf::Graph::chooseEdge	(	std::function< bool(edge)>	includeEdge = `[](edge) { return true;}`,
		bool	isFastTest = `true`
	)		const

Returns a random edge.

nullptr is returned if no feasible edge exists.

See also: chooseIteratorFrom

◆ chooseNode()

node ogdf::Graph::chooseNode	(	std::function< bool(node)>	includeNode = `[](node) { return true;}`,
		bool	isFastTest = `true`
	)		const

Returns a random node.

nullptr is returned if no feasible node exists.

See also: chooseIteratorFrom

◆ clear()

virtual void ogdf::Graph::clear ( )

virtual

Removes all nodes and all edges from the graph.

Reimplemented in ogdf::GraphCopyBase, ogdf::GraphCopy, ogdf::GraphCopySimple, ogdf::OverlappingGraphCopy, and ogdf::TwoSAT.

◆ collapse()

template<class NODELIST >

void ogdf::Graph::collapse ( NODELIST & nodesToCollapse )

inline

Collapses all nodes in the list nodesToCollapse to the first node in the list.

Parallel edges are removed.

Template Parameters

NODELIST is the type of input node list.

Parameters

nodesToCollapse is the list of nodes that will be collapsed. This list will be empty after the call.

Definition at line 1452 of file Graph_d.h.

◆ consistencyCheck()

void ogdf::Graph::consistencyCheck ( ) const

Asserts that this graph is consistent.

◆ contract()

node ogdf::Graph::contract	(	edge	e,
		bool	keepSelfLoops = `false`
	)

Contracts edge e while preserving the order of adjacency entries.

Parameters

e	is the edge to be contracted.
keepSelfLoops	determines whether edges parallel to `e` will result in self-loops or not (in the latter case, they will also be contracted).

Returns: The endpoint of e to which all edges have been moved. The implementation ensures this to be the source of the former edge e.

◆ delEdge()

virtual void ogdf::Graph::delEdge ( edge e )

virtual

Removes edge e from the graph.

Reimplemented in ogdf::GraphCopy, ogdf::GraphCopySimple, ogdf::PlanRepExpansion, and ogdf::OverlappingGraphCopy.

◆ delNode()

virtual void ogdf::Graph::delNode ( node v )

virtual

Removes node v and all incident edges from the graph.

Reimplemented in ogdf::GraphCopyBase, and ogdf::OverlappingGraphCopy.

◆ edgeInserted()

virtual void ogdf::Graph::edgeInserted	(	void *	userData,
		edge	original,
		edge	copy
	)

inlineprotectedvirtual

Callback notifying subclasses that insert() copied an edge.

Parameters

userData	value returned from the initial preInsert() call
original	the original edge
copy	the created copy

Reimplemented in ogdf::GraphCopy, and ogdf::GraphCopySimple.

Definition at line 1894 of file Graph_d.h.

◆ edgeRegistry() [1/2]

internal::GraphEdgeRegistry& ogdf::Graph::edgeRegistry ( )

inline

Returns a reference to the registry of edge arrays associated with this graph.

Definition at line 1633 of file Graph_d.h.

◆ edgeRegistry() [2/2]

const internal::GraphEdgeRegistry& ogdf::Graph::edgeRegistry ( ) const

inline

Returns a const reference to the registry of edge arrays associated with this graph.

Definition at line 1636 of file Graph_d.h.

◆ empty()

bool ogdf::Graph::empty ( ) const

inline

Returns true iff the graph is empty, i.e., contains no nodes.

Definition at line 979 of file Graph_d.h.

◆ firstEdge()

edge ogdf::Graph::firstEdge ( ) const

inline

Returns the first edge in the list of all edges.

Definition at line 1003 of file Graph_d.h.

◆ firstNode()

node ogdf::Graph::firstNode ( ) const

inline

Returns the first node in the list of all nodes.

Definition at line 997 of file Graph_d.h.

◆ genus()

int ogdf::Graph::genus ( ) const

Returns the genus of the graph's embedding.

The genus of a graph is defined as follows. Let G be a graph with m edges, n nodes, nz isolated vertices, fc face cycles, and c connected components. Then,

\[ genus(G) = (m - n - nz - fc + 2c)/2 \]

Returns: the genus of the graph's current embedding; if this is 0, then the graph is planarly embedded.

◆ insert() [1/8]

std::pair<int, int> ogdf::Graph::insert	(	const CCsInfo &	info,
		int	cc,
		NodeArray< node > &	nodeMap,
		EdgeArray< edge > &	edgeMap
	)

inline

Inserts a copy of a given connected component cc into this graph.

See the other insert() variants for details, this method is a short-cut for inserting a whole connected component cc as described by CCsInfo info.

Definition at line 1802 of file Graph_d.h.

◆ insert() [2/8]

std::pair<int, int> ogdf::Graph::insert ( const Graph & G )

inline

Inserts a copy of a given Graph G into this graph.

See the other insert() variants for details, this method is a short-cut for inserting a whole Graph G without the need to specify node or edge maps.

Definition at line 1846 of file Graph_d.h.

◆ insert() [3/8]

std::pair<int, int> ogdf::Graph::insert	(	const Graph &	G,
		NodeArray< node > &	nodeMap,
		EdgeArray< edge > &	edgeMap
	)

inline

Inserts a copy of a given Graph G into this graph.

See the other insert() variants for details, this method is a short-cut for inserting a whole Graph G.

Definition at line 1822 of file Graph_d.h.

◆ insert() [4/8]

template<OGDF_NODE_ITER NI, OGDF_EDGE_FILTER EF, bool copyIDs, bool notifyObservers>

std::pair< int, int > ogdf::Graph::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.

Inserts copies of the nodes given by the iterator pair nodesBegin ... nodesEnd into this Graph and, for each of these nodes, sets the corresponding value in nodeMap to the newly created node. The same happens with all incident edges for which function edgeFilter returns true, although an edge is only inserted if both its endpoints were also inserted (i.e., the corresponding values in nodeMap are non-null). This method always copies the embedding of the subgraph without an overhead.

Template Parameters

NI	The iterator type used for `nodesBegin` ... `nodesEnd`.
EF	The function type used for filtering edges, e.g. `std::function<bool(edge)>`.
copyIDs	if explicitly set to true, the newly inserted nodes and edges will have the same IDs as their originals. The Graph datastructure will become corrupt if one of the IDs is already present in the graph. By default, new IDs are generated as by newNode() and newEdge().
notifyObservers	if explicitly set to false, no GraphObservers will be notified and (Node-,Edge-,AdjEntry-)Arrays won't grow. Only use if you know what you are doing!

Parameters

nodesBegin	Iterator to the first node to insert.
nodesEnd	Iterator one past the last node to insert.
edgeFilter	Function returning `true` for all edges that should be inserted.
nodeMap	A NodeArray registered with the Graph of the nodes in `nodesBegin` ... `nodesEnd`. For each of these original nodes, this map will point to the newly-created copy after this call returns. Note that this map may only contain nullptr values, otherwise the result is undefined.
edgeMap	An EdgeArray registered with the Graph of the edges in `edgesBegin` ... `edgesEnd`. For each of these original edges, this map will point to the newly-created copy after this call returns. Note that this map may only contain nullptr values, otherwise the result is undefined.

Returns: a pair (n, m) where n is the number of created nodes and m is the number of created edges.

Definition at line 214 of file InducedSubgraph.h.

◆ insert() [5/8]

template<OGDF_NODE_ITER NI, OGDF_EDGE_ITER EI, bool copyEmbedding, bool copyIDs, bool notifyObservers>

std::pair< int, int > ogdf::Graph::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.

Inserts copies of the nodes given by the iterator pair nodesBegin ... nodesEnd into this Graph and, for each of these nodes, sets the corresponding value in nodeMap to the newly created node. The same happens with the edges in edgesBegin ... edgesEnd and new edges in edgeMap, although an edge is only inserted if both its endpoints were also inserted (i.e., the corresponding values in nodeMap are non-null).

Template Parameters

NI	The iterator type used for `nodesBegin` ... `nodesEnd`.
EI	The iterator type used for `edgesBegin` ... `edgesEnd`.
copyEmbedding	if explicitly set to false, the inserted subgraph will have an arbitrary embedding. Otherwise, the embedding of the inserted subgraph will be copied from the original.
copyIDs	if explicitly set to true, the newly inserted nodes and edges will have the same IDs as their originals. The Graph datastructure will become corrupt if one of the IDs is already present in the graph. By default, new IDs are generated as by newNode() and newEdge().
notifyObservers	if explicitly set to false, no GraphObservers will be notified and (Node-,Edge-,AdjEntry-)Arrays won't grow. Only use if you know what you are doing!

Parameters

nodesBegin	Iterator to the first node to insert.
nodesEnd	Iterator one past the last node to insert.
edgesBegin	Iterator to the first edge to insert (if its endpoints are also inserted).
edgesEnd	Iterator one past the last edge to insert (if its endpoints are also inserted).
nodeMap	A NodeArray registered with the Graph of the nodes in `nodesBegin` ... `nodesEnd`. After this call returns, for each of these original nodes, this map will point to the newly-created copy. Note that all (and only) edges in `edgesBegin` ... `edgesEnd` will be created if they have non-null endpoints after the call, which includes user-supplied non-null values present when the function is called. It is thus recommended to pass a map with only nullptrs. However, it is possible to use the same nodeMap for multiple calls of insert using edge iterators (which then of course will contain non-null values for the second call onwards).
edgeMap	An EdgeArray registered with the Graph of the edges in `edgesBegin` ... `edgesEnd`. For each of these original edges, this map will point to the newly-created copy after this call returns.

Returns: a pair (n, m) where n is the number of created nodes and m is the number of created edges.

Definition at line 102 of file InducedSubgraph.h.

◆ insert() [6/8]

template<OGDF_NODE_LIST NL>

std::pair< int, int > ogdf::Graph::insert	(	const NL &	nodeList,
		const EdgeSet< false > &	edgeSet,
		NodeArray< node > &	nodeMap,
		EdgeArray< edge > &	edgeMap
	)

Inserts a copy of a given subgraph into this graph.

See the other insert() variants for details, this method is a short-cut for a container of nodes together with an EdgeSet<false> used for filtering edges.

Definition at line 162 of file GraphSets.h.

◆ insert() [7/8]

template<OGDF_NODE_LIST NL>

std::pair< int, int > ogdf::Graph::insert	(	const NL &	nodeList,
		const EdgeSet< true > &	edgeSet,
		NodeArray< node > &	nodeMap,
		EdgeArray< edge > &	edgeMap
	)

Inserts a copy of a given subgraph into this graph.

See the other insert() variants for details, this method is a short-cut for a container of nodes together with an EdgeSet<true> used for filtering edges.

Definition at line 150 of file GraphSets.h.

◆ insert() [8/8]

template<OGDF_NODE_LIST NL, OGDF_EDGE_LIST EL>

std::pair<int, int> ogdf::Graph::insert	(	const NL &	nodeList,
		const EL &	edgeList,
		NodeArray< node > &	nodeMap,
		EdgeArray< edge > &	edgeMap
	)

inline

Inserts a copy of a given subgraph into this graph.

See the other insert() variants for details, this method is a short-cut for a container of nodes together with a further container used for iterating edges.

Definition at line 1783 of file Graph_d.h.

◆ insertAdjEntry() [1/2]

static void ogdf::Graph::insertAdjEntry	(	adjEntry	oldAdj,
		adjEntry	newAdj,
		Direction	dir
	)

inlinestaticprivate

Definition at line 2035 of file Graph_d.h.

◆ insertAdjEntry() [2/2]

static void ogdf::Graph::insertAdjEntry	(	node	n,
		adjEntry	newAdj,
		Direction	dir
	)

inlinestaticprivate

Definition at line 2043 of file Graph_d.h.

◆ insertNodes()

template<OGDF_NODE_ITER NI, bool notifyObservers, bool copyIDs>

void ogdf::Graph::insertNodes	(	const NI &	nodesBegin,
		const NI &	nodesEnd,
		NodeArray< node, true > &	nodeMap,
		int &	newNodes,
		void *	cbData
	)

private

Definition at line 76 of file InducedSubgraph.h.

◆ lastEdge()

edge ogdf::Graph::lastEdge ( ) const

inline

Returns the last edge in the list of all edges.

Definition at line 1006 of file Graph_d.h.

◆ lastNode()

node ogdf::Graph::lastNode ( ) const

inline

Returns the last node in the list of all nodes.

Definition at line 1000 of file Graph_d.h.

◆ maxAdjEntryIndex()

int ogdf::Graph::maxAdjEntryIndex ( ) const

inline

Returns the largest used adjEntry index.

Definition at line 994 of file Graph_d.h.

◆ maxEdgeIndex()

int ogdf::Graph::maxEdgeIndex ( ) const

inline

Returns the largest used edge index.

Definition at line 991 of file Graph_d.h.

◆ maxNodeIndex()

int ogdf::Graph::maxNodeIndex ( ) const

inline

Returns the largest used node index.

Definition at line 988 of file Graph_d.h.

◆ move()

void ogdf::Graph::move	(	edge	e,
		adjEntry	adjSrc,
		Direction	dirSrc,
		adjEntry	adjTgt,
		Direction	dirTgt
	)

Moves edge e to a different adjacency list.

The source adjacency entry of e is moved to the adjacency list containing adjSrc and is inserted before or after adjSrc, and its target adjacency entry to the adjacency list containing adjTgt and is inserted before or after adjTgt; e is afterwards an edge from owner(adjSrc) to owner(adjTgt).

Parameters

e	is the edge to be moved.
adjSrc	is the adjaceny entry before or after which the source adjacency entry of `e` will be inserted.
dirSrc	specifies if the source adjacency entry of `e` will be inserted before or after `adjSrc`.
adjTgt	is the adjaceny entry before or after which the target adjacency entry of `e` will be inserted.
dirTgt	specifies if the target adjacency entry of `e` will be inserted before or after `adjTgt`.

◆ moveAdj() [1/2]

void ogdf::Graph::moveAdj	(	adjEntry	adj,
		node	w
	)

private

moves adjacency entry to node w

◆ moveAdj() [2/2]

void ogdf::Graph::moveAdj	(	adjEntry	adjMove,
		Direction	dir,
		adjEntry	adjPos
	)

inline

Moves adjacency entry adjMove before or after adjPos.

Precondition: adjMove and adjAfter are distinct entries in the same adjacency list.

Parameters

adjMove	is an entry in the adjacency list of a node in this graph.
adjPos	is an entry in the same adjacency list as `adjMove`.
dir	specifies if `adjMove` is moved before or after `adjPos`.

Definition at line 1530 of file Graph_d.h.

◆ moveAdjAfter()

void ogdf::Graph::moveAdjAfter	(	adjEntry	adjMove,
		adjEntry	adjAfter
	)

inline

Moves adjacency entry adjMove after adjAfter.

Precondition: adjMove and adjAfter are distinct entries in the same adjacency list.

Parameters

adjMove	is an entry in the adjacency list of a node in this graph.
adjAfter	is an entry in the same adjacency list as `adjMove`.

Definition at line 1546 of file Graph_d.h.

◆ moveAdjBefore()

void ogdf::Graph::moveAdjBefore	(	adjEntry	adjMove,
		adjEntry	adjBefore
	)

inline

Moves adjacency entry adjMove before adjBefore.

Precondition: adjMove and adjBefore are distinct entries in the same adjacency list.

Parameters

adjMove	is an entry in the adjacency list of a node in this graph.
adjBefore	is an entry in the same adjacency list as `adjMove`.

Definition at line 1561 of file Graph_d.h.

◆ moveSource() [1/2]

void ogdf::Graph::moveSource	(	edge	e,
		adjEntry	adjSrc,
		Direction	dir
	)

Moves the source node of edge e to a specific position in an adjacency list.

Let w be the node containing adjSrc. If e=(v,u) before, then e=(w,u) afterwards. Inserts the adjacency entry before or after adjSrc according to dir.

Parameters

e	is the edge whose source node is moved.
adjSrc	is the adjacency entry before or after which the source adjacency entry of `e` is inserted.
dir	specifies if the source adjacency entry of `e` is inserted before or after `adjSrc`.

◆ moveSource() [2/2]

void ogdf::Graph::moveSource	(	edge	e,
		node	w
	)

Moves the source node of edge e to node w.

If e=(v,u) before, then e=(w,u) afterwards.

Parameters

e	is the edge whose source node is moved.
w	is the new source node of `e`.

◆ moveTarget() [1/2]

void ogdf::Graph::moveTarget	(	edge	e,
		adjEntry	adjTgt,
		Direction	dir
	)

Moves the target node of edge e to a specific position in an adjacency list.

Let w be the node containing adjTgt. If e=(v,u) before, then e=(v,w) afterwards. Inserts the adjacency entry before or after adjTgt according to dir.

Parameters

e	is the edge whose target node is moved.
adjTgt	is the adjacency entry before or after which the target adjacency entry of `e` is inserted.
dir	specifies if the target adjacency entry of `e` is inserted before or after `adjTgt`.

◆ moveTarget() [2/2]

void ogdf::Graph::moveTarget	(	edge	e,
		node	w
	)

Moves the target node of edge e to node w.

If e=(v,u) before, then e=(v,w) afterwards.

Parameters

e	is the edge whose target node is moved.
w	is the new target node of `e`.

◆ newEdge() [1/5]

edge ogdf::Graph::newEdge	(	adjEntry	adjSrc,
		adjEntry	adjTgt,
		Direction	dir = `Direction::after`,
		int	index = `-1`
	)

inline

Creates a new edge at predefined positions in the adjacency lists.

Let v be the node whose adjacency list contains adjSrc, and w the node whose adjacency list contains adjTgt. Then, the created edge is (v,w).

Parameters

adjSrc	is the adjacency entry before / after which the new edge is inserted in the adjacency list of v.
adjTgt	is the adjacency entry before / after which the new edge is inserted in the adjacency list of w.
dir	specifies if the edge is inserted before or after the given adjacency entries.
index	is the index that will be assigned to the newly created edge. If negative or not given will use the next free index `maxEdgeIndex()`. Passing an edge index that is already in use results in an inconsistent data structure. Only specify this parameter if you know what you're doing!

Returns: the newly created edge.

Definition at line 1143 of file Graph_d.h.

◆ newEdge() [2/5]

edge ogdf::Graph::newEdge	(	adjEntry	adjSrc,
		node	w,
		int	index = `-1`
	)

inline

Creates a new edge at predefined positions in the adjacency lists.

Let v be the node whose adjacency list contains adjSrc. Then, the created edge is (v,w).

Parameters

adjSrc	is the adjacency entry after which the new edge is inserted in the adjacency list of v.
w	is the target node of the new edge; the edge is added at the end of the adjacency list of `w`.
index	is the index that will be assigned to the newly created edge. If negative or not given will use the next free index `maxEdgeIndex()`. Passing an edge index that is already in use results in an inconsistent data structure. Only specify this parameter if you know what you're doing!

Returns: the newly created edge.

Definition at line 1121 of file Graph_d.h.

◆ newEdge() [3/5]

edge ogdf::Graph::newEdge	(	node	v,
		adjEntry	adjTgt,
		int	index = `-1`
	)

inline

Creates a new edge at predefined positions in the adjacency lists.

Let w be the node whose adjacency list contains adjTgt. Then, the created edge is (v,w).

Parameters

v	is the source node of the new edge; the edge is added at the end of the adjacency list of `v`.
adjTgt	is the adjacency entry after which the new edge is inserted in the adjacency list of w.
index	is the index that will be assigned to the newly created edge. If negative or not given will use the next free index `maxEdgeIndex()`. Passing an edge index that is already in use results in an inconsistent data structure. Only specify this parameter if you know what you're doing!

Returns: the newly created edge.

Definition at line 1102 of file Graph_d.h.

◆ newEdge() [4/5]

edge ogdf::Graph::newEdge	(	node	v,
		node	w,
		int	index = `-1`
	)

inline

Creates a new edge (v,w) and returns it.

Parameters

v	is the source node of the newly created edge.
w	is the target node of the newly created edge.
index	is the index that will be assigned to the newly created edge. If negative or not given will use the next free index `maxEdgeIndex()`. Passing an edge index that is already in use results in an inconsistent data structure. Only specify this parameter if you know what you're doing!

Returns: the newly created edge.

Definition at line 1083 of file Graph_d.h.

◆ newEdge() [5/5]

template<typename S , typename T >

edge ogdf::Graph::newEdge	(	S	src,
		Direction	dirSrc,
		T	tgt,
		Direction	dirTgt,
		int	index = `-1`
	)

inline

Creates a new edge at predefined positions in the adjacency lists.

Let v either be the node src or the node whose adjacency list contains the adjEntry src, and w either the node tgt or the node whose adjacency list contains the adjEntry tgt. Then, the created edge is (v,w).

Parameters

src	is v or the adjacency entry before / after which the new edge is inserted in the adjacency list of v.
dirSrc	specifies if the edge is inserted before or after `adjSrc`.
tgt	is w or the adjacency entry before / after which the new edge is inserted in the adjacency list of w.
dirTgt	specifies if the edge is inserted before or after `adjTgt`.
index	is the index that will be assigned to the newly created edge. If negative or not given will use the next free index `maxEdgeIndex()`. Passing an edge index that is already in use results in an inconsistent data structure. Only specify this parameter if you know what you're doing!

Returns: the newly created edge.

Definition at line 1168 of file Graph_d.h.

◆ newNode()

node ogdf::Graph::newNode ( int index = -1 )

inline

Creates a new node and returns it.

Parameters

index is the index that will be assigned to the newly created node. If negative or not given will use the next free index maxNodeIndex(). Passing a node index that is already in use results in an inconsistent data structure. Only specify this parameter if you know what you're doing!

Returns: the newly created node.

Definition at line 1064 of file Graph_d.h.

◆ nodeInserted()

virtual void ogdf::Graph::nodeInserted	(	void *	userData,
		node	original,
		node	copy
	)

inlineprotectedvirtual

Callback notifying subclasses that insert() copied a node.

Parameters

userData	value returned from the initial preInsert() call
original	the original node
copy	the created copy

Reimplemented in ogdf::GraphCopyBase.

Definition at line 1885 of file Graph_d.h.

◆ nodeRegistry() [1/2]

internal::GraphNodeRegistry& ogdf::Graph::nodeRegistry ( )

inline

Returns a reference to the registry of node arrays associated with this graph.

Definition at line 1625 of file Graph_d.h.

◆ nodeRegistry() [2/2]

const internal::GraphNodeRegistry& ogdf::Graph::nodeRegistry ( ) const

inline

Returns a const reference to the registry of node arrays associated with this graph.

Definition at line 1628 of file Graph_d.h.

◆ numberOfEdges()

int ogdf::Graph::numberOfEdges ( ) const

inline

Returns the number of edges in the graph.

Definition at line 985 of file Graph_d.h.

◆ numberOfNodes()

int ogdf::Graph::numberOfNodes ( ) const

inline

Returns the number of nodes in the graph.

Definition at line 982 of file Graph_d.h.

◆ operator const internal::GraphAdjRegistry &()

ogdf::Graph::operator const internal::GraphAdjRegistry & ( ) const

inline

Definition at line 1646 of file Graph_d.h.

◆ operator const internal::GraphEdgeRegistry &()

ogdf::Graph::operator const internal::GraphEdgeRegistry & ( ) const

inline

Definition at line 1638 of file Graph_d.h.

◆ operator const internal::GraphNodeRegistry &()

ogdf::Graph::operator const internal::GraphNodeRegistry & ( ) const

inline

Definition at line 1630 of file Graph_d.h.

◆ operator=() [1/2]

Graph& ogdf::Graph::operator= ( const Graph & copy )

Overwrites this graph to be a copy of G.

The assignment operator assures that the adjacency lists of nodes in the constructed graph are in the same order as the adjacency lists in G. This is in particular important when dealing with embedded graphs.

Parameters

copy	is the graph to be copied.

Returns: this graph.

See also: insert()

◆ operator=() [2/2]

Graph& ogdf::Graph::operator= ( Graph && move )

delete

◆ postInsert()

virtual void ogdf::Graph::postInsert	(	void *	userData,
		int	newNodes,
		int	newEdges
	)

inlineprotectedvirtual

Callback notifying subclasses that an insert() call has finished.

Parameters

userData	value returned from the initial preInsert() call
newNodes	final number of created nodes
newEdges	final number of created edges

Definition at line 1903 of file Graph_d.h.

◆ preInsert()

virtual void* ogdf::Graph::preInsert	(	bool	copyEmbedding,
		bool	copyIDs,
		bool	notifyObservers,
		bool	edgeFilter,
		NodeArray< node > &	nodeMap,
		EdgeArray< edge > &	edgeMap,
		int *	newNodes,
		int *	newEdges
	)

inlineprotectedvirtual

Callback notifying subclasses that some graph is about to be insert() -ed.

See its implementation in GraphCopy for an example.

Parameters

copyEmbedding	value of the template parameter `copyEmbedding` of the insert() call
copyIDs	value of the template parameter `copyIDs` of the insert() call
notifyObservers	value of the template parameter `notifyObservers` of the insert() call
edgeFilter	true if the insert variant with an edge filter instead of an iterator is used
nodeMap	value of the template parameter `nodeMap` of the insert() call
edgeMap	value of the template parameter `edgeMap` of the insert() call
newNodes	pointer to the counter of inserted nodes, will be valid until after postInsert()
newEdges	pointer to the counter of inserted edges, will be valid until after postInsert()

Returns: arbitrary value, which will be passed to all following callbacks

Reimplemented in ogdf::GraphCopyBase.

Definition at line 1873 of file Graph_d.h.

◆ pureNewEdge()

edge ogdf::Graph::pureNewEdge	(	node	src,
		node	tgt,
		int	index
	)

inlineprivate

Creates a new edge object with id index and corresponding AdjElements and adds it to the list of edges.

Registered EdgeArrays won't get resized and GraphObservers also won't get notified of the new edge.

Warning: The adjacency lists of the passed nodes won't be updated.

Parameters

src	The source node of the new edge.
tgt	The target node of the new edge.
index	The index of the new edge.

Returns: The newly created edge.

Definition at line 2002 of file Graph_d.h.

◆ pureNewNode()

node ogdf::Graph::pureNewNode ( int index )

inlineprivate

Creates a new node object with id index and adds it to the list of nodes.

Registered NodeArrays won't get resized and GraphObservers also won't get notified of the new node.

Parameters

index The index of the new node.

Returns: The newly created node.

Definition at line 1971 of file Graph_d.h.

◆ representsCombEmbedding()

bool ogdf::Graph::representsCombEmbedding ( ) const

inline

Returns true iff the graph represents a combinatorial embedding.

Returns: true if the current embedding (given by the adjacency lists) represents a combinatorial embedding, false otherwise.

Definition at line 1609 of file Graph_d.h.

◆ resetEdgeIdCount()

void ogdf::Graph::resetEdgeIdCount ( int maxId )

Resets the edge id count to maxId.

The next edge will get edge id maxId +1. Use this function with caution! It is provided as an efficient way to reduce the edge id count. The Graph class increments the edge id count whenever an edge is created; free edge ids resulting from removing edges are not reused (there is not something like a freelist).

This function is , e.g., useful, when a lot of edges has been added and all these edges are removed again (without creating other new edges meanwile). Then, it is safe to reduce the edge id count to the value it had before, cf. the following code snippet:

int oldIdCount = G.maxEdgeIndex();
Create some edges
...
Remove all these edges again
G.resetEdgeIdCount(oldIdCount);

Reducing the edge id count will reduce the memory consumption of edge arrays associated with the graph.

Precondition: -1 <= maxId <= maximal edge id in the graph.

Parameters

maxId is an upper bound of the edge ids in the graph.

◆ resetNodeIdCount()

void ogdf::Graph::resetNodeIdCount ( int maxId )

◆ restoreAllEdges()

void ogdf::Graph::restoreAllEdges ( )

Restore all hidden edges and invalidate all HiddenEdgeSets.

◆ reverseAdjEdges() [1/2]

void ogdf::Graph::reverseAdjEdges ( )

Reverses all adjacency lists.

◆ reverseAdjEdges() [2/2]

void ogdf::Graph::reverseAdjEdges ( node v )

inline

Reverses the adjacency list of v.

Parameters

v	is the node whose adjacency list will be reveresed.

Definition at line 1520 of file Graph_d.h.

◆ reverseAllEdges()

void ogdf::Graph::reverseAllEdges ( )

Reverses all edges in the graph.

◆ reverseEdge()

void ogdf::Graph::reverseEdge ( edge e )

Reverses the edge e, i.e., exchanges source and target node.

◆ searchEdge()

edge ogdf::Graph::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 ))).

Parameters

v	is the first endpoint of the edge to be searched.
w	is the second endpoint of the edge to be searched.
directed	iff set to true, enforces that `v` must be the source node and `w` the target node of the edge.

Returns: an edge (v,w) (or (w,v) for !directed) if such an edge exists, nullptr otherwise.

◆ sort() [1/2]

template<class ADJ_ENTRY_LIST >

void ogdf::Graph::sort	(	node	v,
		const ADJ_ENTRY_LIST &	newOrder
	)

inline

Sorts the adjacency list of node v according to newOrder.

Precondition: newOrder contains exactly the adjacency entries of v!

Template Parameters

ADJ_ENTRY_LIST is the type of the input adjacency entry list.

Parameters

v	is the node whose adjacency list will be sorted.
newOrder	is the list of adjacency entries of `v` in the new order.

Definition at line 1482 of file Graph_d.h.

◆ sort() [2/2]

template<class IT >

void ogdf::Graph::sort	(	node	v,
		IT	begin,
		IT	end
	)

inline

Sorts the adjacency list of node v according to the range denoted by two iterators.

Precondition: begin ... end contains exactly the adjacency entries of v!

Template Parameters

IT	is the type of the input adjacency entry list iterator.

Parameters

v	is the node whose adjacency list will be sorted.
begin	is the iterator to the adjacency entry that should come first
end	is the iterator one past the adjacency entry that should come last

Definition at line 1498 of file Graph_d.h.

◆ split()

virtual edge ogdf::Graph::split ( edge e )

virtual

Splits edge e into two edges introducing a new node.

Let e=(v,w). Then, the resulting two edges are e=(v,u) and e'=(u,w), where u is a new node.

Note: The edge e is modified by this operation.

Parameters

e	is the edge to be split.

Returns: The edge e'.

Reimplemented in ogdf::PlanRep, ogdf::GraphCopy, ogdf::PlanRepExpansion, ogdf::PlanRepInc, ogdf::PlanRepUML, and ogdf::ClusterPlanRep.

◆ splitNode()

node ogdf::Graph::splitNode	(	adjEntry	adjStartLeft,
		adjEntry	adjStartRight
	)

Splits a node while preserving the order of adjacency entries.

This method splits a node v into two nodes vl and vr. Node vl receives all adjacent edges of v from adjStartLeft until the edge preceding adjStartRight, and vr the remaining nodes (thus adjStartRight is the first edge that goes to vr). The order of adjacency entries is preserved. Additionally, a new edge (vl,vr) is created, such that this edge is inserted before adjStartLeft and adjStartRight in the adjacency lists of vl and vr.

When adjStartLeft and adjStartRight are the same, vl receives all edges and the edge (vl, vr) is inserted before adjStartLeft in the adjacency list of vl.

Node v is modified to become node vl, and node vr is returned. This method is useful when modifying combinatorial embeddings.

Parameters

adjStartLeft	is the first entry that goes to the left node.
adjStartRight	is the first entry that goes to the right node.

Returns: the newly created node.

◆ swapAdjEdges()

void ogdf::Graph::swapAdjEdges	(	adjEntry	adj1,
		adjEntry	adj2
	)

inline

Exchanges two entries in an adjacency list.

Precondition: adj1 and adj2 must be belong to the same adjacency list.

Parameters

adj1	the first adjacency entry to be swapped.
adj2	the secomd adjacency entry to be swapped.

Definition at line 1579 of file Graph_d.h.

◆ unsplit() [1/2]

virtual void ogdf::Graph::unsplit	(	edge	eIn,
		edge	eOut
	)

virtual

Undoes a split operation.

For two edges eIn = (x,u) and eOut = (u,y), removes node u by joining eIn and eOut. Edge eOut is removed and eIn is reused.

Precondition: eIn and eOut are the only edges incident with u and none of them is a self-loop.

Parameters

eIn	is the (only) incoming edge of u.
eOut	is the (only) outgoing edge of u.

Reimplemented in ogdf::GraphCopy, and ogdf::PlanRepExpansion.

◆ unsplit() [2/2]

void ogdf::Graph::unsplit ( node u )

Undoes a split operation.

Removes node u by joining the two edges adjacent to u. The outgoing edge of u is removed and the incoming edge is reused

Precondition: u has exactly one incoming and one outgoing edge, and none of them is a self-loop.

Parameters

u	is the node to be unsplit.

Friends And Related Function Documentation

◆ GraphObserver

friend class GraphObserver

friend

Definition at line 872 of file Graph_d.h.

Member Data Documentation

◆ edges

internal::GraphObjectContainer<EdgeElement> ogdf::Graph::edges

The container containing all edge objects.

Definition at line 935 of file Graph_d.h.

◆ m_edgeIdCount

int ogdf::Graph::m_edgeIdCount

private

The Index that will be assigned to the next created edge.

Definition at line 878 of file Graph_d.h.

◆ m_hiddenEdgeSets

List<HiddenEdgeSet*> ogdf::Graph::m_hiddenEdgeSets

private

The list of hidden edges.

Definition at line 884 of file Graph_d.h.

◆ m_nodeIdCount

int ogdf::Graph::m_nodeIdCount

private

The Index that will be assigned to the next created node.

Definition at line 877 of file Graph_d.h.

◆ m_regAdjArrays

internal::GraphAdjRegistry ogdf::Graph::m_regAdjArrays

private

The registered adjEntry arrays.

Definition at line 882 of file Graph_d.h.

◆ m_regEdgeArrays

internal::GraphEdgeRegistry ogdf::Graph::m_regEdgeArrays

private

The registered edge arrays.

Definition at line 881 of file Graph_d.h.

◆ m_regNodeArrays

internal::GraphNodeRegistry ogdf::Graph::m_regNodeArrays

private

The registered node arrays.

Definition at line 880 of file Graph_d.h.

◆ nodes

internal::GraphObjectContainer<NodeElement> ogdf::Graph::nodes

The container containing all node objects.

Definition at line 932 of file Graph_d.h.

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

include/ogdf/basic/Graph_d.h
include/ogdf/basic/GraphSets.h
include/ogdf/basic/InducedSubgraph.h

OpenGraph DrawingFramework

Classes

Public Types

Public Member Functions

Public Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Subgraph insertion

Additional Inherited Members

Detailed Description

Thread Safety

Iteration

Member Typedef Documentation

◆ adjEntry_iterator

◆ edge_iterator

◆ node_iterator

Member Enumeration Documentation

◆ EdgeType

◆ NodeType

Constructor & Destructor Documentation

◆ Graph() [1/3]

◆ Graph() [2/3]

◆ Graph() [3/3]

◆ ~Graph()

Member Function Documentation

◆ adjEntryRegistry() [1/2]

◆ adjEntryRegistry() [2/2]

◆ allEdges()

◆ allNodes()

◆ chooseEdge()

◆ chooseNode()

◆ clear()

◆ collapse()

◆ consistencyCheck()

◆ contract()

◆ delEdge()

◆ delNode()

◆ edgeInserted()

◆ edgeRegistry() [1/2]

◆ edgeRegistry() [2/2]

◆ empty()

◆ firstEdge()

◆ firstNode()

◆ genus()

◆ insert() [1/8]

◆ insert() [2/8]

◆ insert() [3/8]

◆ insert() [4/8]

◆ insert() [5/8]

◆ insert() [6/8]

◆ insert() [7/8]

◆ insert() [8/8]

◆ insertAdjEntry() [1/2]

◆ insertAdjEntry() [2/2]

◆ insertNodes()

◆ lastEdge()

◆ lastNode()

◆ maxAdjEntryIndex()

◆ maxEdgeIndex()

◆ maxNodeIndex()

◆ move()

◆ moveAdj() [1/2]

◆ moveAdj() [2/2]

◆ moveAdjAfter()

◆ moveAdjBefore()

◆ moveSource() [1/2]

◆ moveSource() [2/2]

◆ moveTarget() [1/2]

◆ moveTarget() [2/2]

◆ newEdge() [1/5]

◆ newEdge() [2/5]

◆ newEdge() [3/5]

◆ newEdge() [4/5]

◆ newEdge() [5/5]

◆ newNode()

◆ nodeInserted()

◆ nodeRegistry() [1/2]

◆ nodeRegistry() [2/2]

Open
Graph Drawing
Framework