vtkReebGraph Class Reference

Reeb graph computation for PL scalar fields. More...

#include <vtkReebGraph.h>

Inheritance diagram for vtkReebGraph:

Collaboration diagram for vtkReebGraph:

Public Types
enum	{ ERR_INCORRECT_FIELD = -1 , ERR_NO_SUCH_FIELD = -2 , ERR_NOT_A_SIMPLICIAL_MESH = -3 }
typedef vtkMutableDirectedGraph	Superclass
Public Types inherited from vtkMutableDirectedGraph
typedef vtkDirectedGraph	Superclass
Public Types inherited from vtkDirectedGraph
typedef vtkGraph	Superclass
Public Types inherited from vtkGraph
typedef vtkDataObject	Superclass
Public Types inherited from vtkDataObject
enum	FieldAssociations {   FIELD_ASSOCIATION_POINTS , FIELD_ASSOCIATION_CELLS , FIELD_ASSOCIATION_NONE , FIELD_ASSOCIATION_POINTS_THEN_CELLS ,   FIELD_ASSOCIATION_VERTICES , FIELD_ASSOCIATION_EDGES , FIELD_ASSOCIATION_ROWS , NUMBER_OF_ASSOCIATIONS }
	Possible values for the FIELD_ASSOCIATION information entry. More...
enum	AttributeTypes {   POINT , CELL , FIELD , POINT_THEN_CELL ,   VERTEX , EDGE , ROW , NUMBER_OF_ATTRIBUTE_TYPES }
	Possible attribute types. More...
enum	FieldOperations { FIELD_OPERATION_PRESERVED , FIELD_OPERATION_REINTERPOLATED , FIELD_OPERATION_MODIFIED , FIELD_OPERATION_REMOVED }
	Possible values for the FIELD_OPERATION information entry. More...
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkReebGraph *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
void	PrintNodeData (ostream &os, vtkIndent indent)
int	GetDataObjectType () override
	Return class name of data type.
int	Build (vtkPolyData *mesh, vtkDataArray *scalarField)
	Build the Reeb graph of the field 'scalarField' defined on the surface mesh 'mesh'.
int	Build (vtkUnstructuredGrid *mesh, vtkDataArray *scalarField)
	Build the Reeb graph of the field 'scalarField' defined on the volume mesh 'mesh'.
int	Build (vtkPolyData *mesh, vtkIdType scalarFieldId)
	Build the Reeb graph of the field given by the Id 'scalarFieldId', defined on the surface mesh 'mesh'.
int	Build (vtkUnstructuredGrid *mesh, vtkIdType scalarFieldId)
	Build the Reeb graph of the field given by the Id 'scalarFieldId', defined on the volume mesh 'mesh'.
int	Build (vtkPolyData *mesh, const char *scalarFieldName)
	Build the Reeb graph of the field given by the name 'scalarFieldName', defined on the surface mesh 'mesh'.
int	Build (vtkUnstructuredGrid *mesh, const char *scalarFieldName)
	Build the Reeb graph of the field given by the name 'scalarFieldName', defined on the volume mesh 'mesh'.
int	StreamTriangle (vtkIdType vertex0Id, double scalar0, vtkIdType vertex1Id, double scalar1, vtkIdType vertex2Id, double scalar2)
	Streaming Reeb graph computation.
int	StreamTetrahedron (vtkIdType vertex0Id, double scalar0, vtkIdType vertex1Id, double scalar1, vtkIdType vertex2Id, double scalar2, vtkIdType vertex3Id, double scalar3)
	Streaming Reeb graph computation.
void	CloseStream ()
	Finalize internal data structures, in the case of streaming computations (with StreamTriangle or StreamTetrahedron).
void	DeepCopy (vtkDataObject *src) override
	Deep copies the data object into this graph.
int	Simplify (double simplificationThreshold, vtkReebGraphSimplificationMetric *simplificationMetric)
	Simplify the Reeb graph given a threshold 'simplificationThreshold' (between 0 and 1).
void	Set (vtkMutableDirectedGraph *g)
	Use a pre-defined Reeb graph (post-processing).
Public Member Functions inherited from vtkMutableDirectedGraph
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkMutableDirectedGraph *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
virtual vtkIdType	SetNumberOfVertices (vtkIdType numVerts)
	Allocates space for the specified number of vertices in the graph's internal data structures.
vtkIdType	AddVertex ()
	Adds a vertex to the graph and returns the index of the new vertex.
vtkIdType	AddVertex (vtkVariantArray *propertyArr)
	Adds a vertex to the graph with associated properties defined in propertyArr and returns the index of the new vertex.
vtkIdType	AddVertex (const vtkVariant &pedigreeId)
	Adds a vertex with the given pedigreeID to the graph and returns the index of the new vertex.
vtkEdgeType	AddEdge (vtkIdType u, vtkIdType v)
	Adds a directed edge from u to v, where u and v are vertex indices, and returns a vtkEdgeType structure describing that edge.
vtkEdgeType	AddEdge (vtkIdType u, vtkIdType v, vtkVariantArray *propertyArr)
	Adds a directed edge from u to v, where u and v are vertex indices, with associated properties defined in propertyArr and returns a vtkEdgeType structure describing that edge.
vtkEdgeType	AddEdge (const vtkVariant &u, vtkIdType v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u is a vertex pedigree ID and v is a vertex index, and returns a vtkEdgeType structure describing that edge.
vtkEdgeType	AddEdge (vtkIdType u, const vtkVariant &v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u is a vertex index and v is a vertex pedigree ID, and returns a vtkEdgeType structure describing that edge.
vtkEdgeType	AddEdge (const vtkVariant &u, const vtkVariant &v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u and v are vertex pedigree IDs, and returns a vtkEdgeType structure describing that edge.
void	LazyAddVertex ()
	Adds a vertex to the graph.
void	LazyAddVertex (vtkVariantArray *propertyArr)
	Adds a vertex to the graph with associated properties defined in propertyArr.
void	LazyAddVertex (const vtkVariant &pedigreeId)
	Adds a vertex with the given pedigreeID to the graph.
void	LazyAddEdge (vtkIdType u, vtkIdType v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u and v are vertex indices.
void	LazyAddEdge (const vtkVariant &u, vtkIdType v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u is a vertex pedigree ID and v is a vertex index.
void	LazyAddEdge (vtkIdType u, const vtkVariant &v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u is a vertex index and v is a vertex pedigree ID.
void	LazyAddEdge (const vtkVariant &u, const vtkVariant &v, vtkVariantArray *propertyArr=nullptr)
	Adds a directed edge from u to v, where u and v are vertex pedigree IDs.
vtkGraphEdge *	AddGraphEdge (vtkIdType u, vtkIdType v)
	Variant of AddEdge() that returns a heavyweight vtkGraphEdge object.
vtkIdType	AddChild (vtkIdType parent, vtkVariantArray *propertyArr)
	Convenience method for creating trees.
vtkIdType	AddChild (vtkIdType parent)
void	RemoveVertex (vtkIdType v)
	Removes the vertex from the graph along with any connected edges.
void	RemoveEdge (vtkIdType e)
	Removes the edge from the graph.
void	RemoveVertices (vtkIdTypeArray *arr)
	Removes a collection of vertices from the graph along with any connected edges.
void	RemoveEdges (vtkIdTypeArray *arr)
	Removes a collection of edges from the graph.
Public Member Functions inherited from vtkDirectedGraph
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkDirectedGraph *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
int	GetDataObjectType () override
	Return what type of dataset this is.
bool	IsStructureValid (vtkGraph *g) override
	Check the storage, and accept it if it is a valid undirected graph.
Public Member Functions inherited from vtkGraph
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkGraph *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
int	GetDataObjectType () override
	Return what type of dataset this is.
void	Initialize () override
	Initialize to an empty graph.
void	ComputeBounds ()
	Compute the bounds of the graph.
vtkMTimeType	GetMTime () override
	The modified time of the graph.
virtual void	GetOutEdges (vtkIdType v, vtkOutEdgeIterator *it)
	Initializes the out edge iterator to iterate over all outgoing edges of vertex v.
virtual vtkIdType	GetDegree (vtkIdType v)
	The total of all incoming and outgoing vertices for vertex v.
virtual vtkIdType	GetOutDegree (vtkIdType v)
	The number of outgoing edges from vertex v.
virtual vtkOutEdgeType	GetOutEdge (vtkIdType v, vtkIdType index)
	Random-access method for retrieving outgoing edges from vertex v.
virtual void	GetOutEdge (vtkIdType v, vtkIdType index, vtkGraphEdge *e)
	Random-access method for retrieving outgoing edges from vertex v.
virtual void	GetInEdges (vtkIdType v, vtkInEdgeIterator *it)
	Initializes the in edge iterator to iterate over all incoming edges to vertex v.
virtual vtkIdType	GetInDegree (vtkIdType v)
	The number of incoming edges to vertex v.
virtual vtkInEdgeType	GetInEdge (vtkIdType v, vtkIdType index)
	Random-access method for retrieving incoming edges to vertex v.
virtual void	GetInEdge (vtkIdType v, vtkIdType index, vtkGraphEdge *e)
	Random-access method for retrieving incoming edges to vertex v.
virtual void	GetAdjacentVertices (vtkIdType v, vtkAdjacentVertexIterator *it)
	Initializes the adjacent vertex iterator to iterate over all outgoing vertices from vertex v.
virtual void	GetEdges (vtkEdgeListIterator *it)
	Initializes the edge list iterator to iterate over all edges in the graph.
virtual vtkIdType	GetNumberOfEdges ()
	The number of edges in the graph.
virtual void	GetVertices (vtkVertexListIterator *it)
	Initializes the vertex list iterator to iterate over all vertices in the graph.
virtual vtkIdType	GetNumberOfVertices ()
	The number of vertices in the graph.
void	SetDistributedGraphHelper (vtkDistributedGraphHelper *helper)
	Sets the distributed graph helper of this graph, turning it into a distributed graph.
vtkDistributedGraphHelper *	GetDistributedGraphHelper ()
	Retrieves the distributed graph helper for this graph.
vtkIdType	FindVertex (const vtkVariant &pedigreeID)
	Retrieve the vertex with the given pedigree ID.
void	ShallowCopy (vtkDataObject *obj) override
	Shallow copies the data object into this graph.
void	DeepCopy (vtkDataObject *obj) override
	Deep copies the data object into this graph.
virtual void	CopyStructure (vtkGraph *g)
	Does a shallow copy of the topological information, but not the associated attributes.
virtual bool	CheckedShallowCopy (vtkGraph *g)
	Performs the same operation as ShallowCopy(), but instead of reporting an error for an incompatible graph, returns false.
virtual bool	CheckedDeepCopy (vtkGraph *g)
	Performs the same operation as DeepCopy(), but instead of reporting an error for an incompatible graph, returns false.
virtual void	Squeeze ()
	Reclaim unused memory.
unsigned long	GetActualMemorySize () override
	Return the actual size of the data in kibibytes (1024 bytes).
void	ReorderOutVertices (vtkIdType v, vtkIdTypeArray *vertices)
	Reorder the outgoing vertices of a vertex.
bool	IsSameStructure (vtkGraph *other)
	Returns true if both graphs point to the same adjacency structure.
vtkIdType	GetNumberOfEdgePoints (vtkIdType e)
	Get the number of edge points associated with an edge.
double *	GetEdgePoint (vtkIdType e, vtkIdType i)
	Get the x,y,z location of a point along edge e.
void	ClearEdgePoints (vtkIdType e)
	Clear all points associated with an edge.
void	SetEdgePoint (vtkIdType e, vtkIdType i, const double x[3])
	Set an x,y,z location of a point along an edge.
void	SetEdgePoint (vtkIdType e, vtkIdType i, double x, double y, double z)
void	AddEdgePoint (vtkIdType e, const double x[3])
	Adds a point to the end of the list of edge points for a certain edge.
void	AddEdgePoint (vtkIdType e, double x, double y, double z)
vtkGraphInternals *	GetGraphInternals (bool modifying)
	Returns the internal representation of the graph.
void	GetInducedEdges (vtkIdTypeArray *verts, vtkIdTypeArray *edges)
	Fills a list of edge indices with the edges contained in the induced subgraph formed by the vertices in the vertex list.
vtkFieldData *	GetAttributesAsFieldData (int type) override
	Returns the attributes of the data object as a vtkFieldData.
vtkIdType	GetNumberOfElements (int type) override
	Get the number of elements for a specific attribute type (VERTEX, EDGE, etc.).
void	Dump ()
	Dump the contents of the graph to standard output.
vtkIdType	GetEdgeId (vtkIdType a, vtkIdType b)
	Returns the Id of the edge between vertex a and vertex b.
bool	ToDirectedGraph (vtkDirectedGraph *g)
	Convert the graph to a directed graph.
bool	ToUndirectedGraph (vtkUndirectedGraph *g)
	Convert the graph to an undirected graph.
virtual vtkDataSetAttributes *	GetVertexData ()
	Get the vertex or edge data.
virtual vtkDataSetAttributes *	GetEdgeData ()
	Get the vertex or edge data.
double *	GetPoint (vtkIdType ptId)
	These methods return the point (0,0,0) until the points structure is created, when it returns the actual point position.
void	GetPoint (vtkIdType ptId, double x[3])
	These methods return the point (0,0,0) until the points structure is created, when it returns the actual point position.
vtkPoints *	GetPoints ()
	Returns the points array for this graph.
virtual void	SetPoints (vtkPoints *points)
	Returns the points array for this graph.
double *	GetBounds ()
	Return a pointer to the geometry bounding box in the form (xmin,xmax, ymin,ymax, zmin,zmax).
void	GetBounds (double bounds[6])
	Return a pointer to the geometry bounding box in the form (xmin,xmax, ymin,ymax, zmin,zmax).
vtkIdType	GetSourceVertex (vtkIdType e)
	Retrieve the source and target vertices for an edge id.
vtkIdType	GetTargetVertex (vtkIdType e)
	Retrieve the source and target vertices for an edge id.
void	SetEdgePoints (vtkIdType e, vtkIdType npts, const double pts[])
	Get/Set the internal edge control points associated with each edge.
void	GetEdgePoints (vtkIdType e, vtkIdType &npts, double *&pts)
	Get/Set the internal edge control points associated with each edge.
void	ShallowCopyEdgePoints (vtkGraph *g)
	Copy the internal edge point data from another graph into this graph.
void	DeepCopyEdgePoints (vtkGraph *g)
	Copy the internal edge point data from another graph into this graph.
Public Member Functions inherited from vtkDataObject
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkDataObject *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
vtkMTimeType	GetMTime () override
	Data objects are composite objects and need to check each part for MTime.
virtual void	Initialize ()
	Restore data object to initial state,.
void	ReleaseData ()
	Release data back to system to conserve memory resource.
virtual int	GetDataObjectType ()
	Return class name of data type.
vtkMTimeType	GetUpdateTime ()
	Used by Threaded ports to determine if they should initiate an asynchronous update (still in development).
virtual unsigned long	GetActualMemorySize ()
	Return the actual size of the data in kibibytes (1024 bytes).
virtual void	CopyInformationFromPipeline (vtkInformation *vtkNotUsed(info))
	Copy from the pipeline information to the data object's own information.
virtual void	CopyInformationToPipeline (vtkInformation *vtkNotUsed(info))
	Copy information from this data object to the pipeline information.
void	DataHasBeenGenerated ()
	This method is called by the source when it executes to generate data.
virtual void	PrepareForNewData ()
	make the output data ready for new data to be inserted.
virtual void	ShallowCopy (vtkDataObject *src)
	The goal of the method is to copy the data up to the array pointers only.
virtual void	DeepCopy (vtkDataObject *src)
	The goal of the method is to copy the complete data from src into this object.
virtual int	GetExtentType ()
	The ExtentType will be left as VTK_PIECES_EXTENT for data objects such as vtkPolyData and vtkUnstructuredGrid.
virtual void	Crop (const int *updateExtent)
	This method crops the data object (if necessary) so that the extent matches the update extent.
virtual vtkDataSetAttributes *	GetAttributes (int type)
	Returns the attributes of the data object of the specified attribute type.
virtual vtkUnsignedCharArray *	GetGhostArray (int type)
	Returns the ghost arrays of the data object of the specified attribute type.
virtual bool	SupportsGhostArray (int type)
	Returns if this type of data object support ghost array for specified type.
virtual vtkFieldData *	GetAttributesAsFieldData (int type)
	Returns the attributes of the data object as a vtkFieldData.
virtual int	GetAttributeTypeForArray (vtkAbstractArray *arr)
	Retrieves the attribute type that an array came from.
virtual vtkIdType	GetNumberOfElements (int type)
	Get the number of elements for a specific attribute type (POINT, CELL, etc.).
virtual vtkInformation *	GetInformation ()
	Set/Get the information object associated with this data object.
virtual void	SetInformation (vtkInformation *)
	Set/Get the information object associated with this data object.
virtual vtkTypeBool	GetDataReleased ()
	Get the flag indicating the data has been released.
virtual void	SetFieldData (vtkFieldData *)
	Assign or retrieve a general field data to this data object.
virtual vtkFieldData *	GetFieldData ()
	Assign or retrieve a general field data to this data object.
void	GlobalReleaseDataFlagOn ()
	Turn on/off flag to control whether every object releases its data after being used by a filter.
void	GlobalReleaseDataFlagOff ()
	Turn on/off flag to control whether every object releases its data after being used by a filter.
Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)
virtual void	DebugOn ()
	Turn debugging output on.
virtual void	DebugOff ()
	Turn debugging output off.
bool	GetDebug ()
	Get the value of the debug flag.
void	SetDebug (bool debugFlag)
	Set the value of the debug flag.
virtual void	Modified ()
	Update the modification time for this object.
virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
void	RemoveObserver (unsigned long tag)
void	RemoveObservers (unsigned long event)
void	RemoveObservers (const char *event)
void	RemoveAllObservers ()
vtkTypeBool	HasObserver (unsigned long event)
vtkTypeBool	HasObserver (const char *event)
vtkTypeBool	InvokeEvent (unsigned long event)
vtkTypeBool	InvokeEvent (const char *event)
std::string	GetObjectDescription () const override
	The object description printed in messages and PrintSelf output.
unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
unsigned long	AddObserver (const char *event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
void	RemoveObservers (const char *event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
vtkTypeBool	HasObserver (const char *event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.
vtkTypeBool	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.
vtkTypeBool	InvokeEvent (const char *event, void *callData)
	This method invokes an event and return whether the event was aborted or not.
virtual void	SetObjectName (const std::string &objectName)
	Set/get the name of this object for reporting purposes.
virtual std::string	GetObjectName () const
	Set/get the name of this object for reporting purposes.
Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.
virtual std::string	GetObjectDescription () const
	The object description printed in messages and PrintSelf output.
virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.
virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
virtual void	Delete ()
	Delete a VTK object.
virtual void	FastDelete ()
	Delete a reference to this object.
void	InitializeObjectBase ()
void	Print (ostream &os)
	Print an object to an ostream.
void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).
virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).
int	GetReferenceCount ()
	Return the current reference count of this object.
void	SetReferenceCount (int)
	Sets the reference count.
bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.
virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.
virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.
virtual bool	UsesGarbageCollector () const
	Indicate whether the class uses vtkGarbageCollector or not.

Static Public Member Functions
static vtkReebGraph *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkReebGraph *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkMutableDirectedGraph
static vtkMutableDirectedGraph *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkMutableDirectedGraph *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkDirectedGraph
static vtkDirectedGraph *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkDirectedGraph *	SafeDownCast (vtkObjectBase *o)
static vtkDirectedGraph *	GetData (vtkInformation *info)
	Retrieve a graph from an information vector.
static vtkDirectedGraph *	GetData (vtkInformationVector *v, int i=0)
	Retrieve a graph from an information vector.
Static Public Member Functions inherited from vtkGraph
static vtkTypeBool	IsTypeOf (const char *type)
static vtkGraph *	SafeDownCast (vtkObjectBase *o)
static vtkGraph *	GetData (vtkInformation *info)
	Retrieve a graph from an information vector.
static vtkGraph *	GetData (vtkInformationVector *v, int i=0)
	Retrieve a graph from an information vector.
Static Public Member Functions inherited from vtkDataObject
static vtkDataObject *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkDataObject *	SafeDownCast (vtkObjectBase *o)
static vtkInformation *	GetActiveFieldInformation (vtkInformation *info, int fieldAssociation, int attributeType)
	Return the information object within the input information object's field data corresponding to the specified association (FIELD_ASSOCIATION_POINTS or FIELD_ASSOCIATION_CELLS) and attribute (SCALARS, VECTORS, NORMALS, TCOORDS, or TENSORS)
static vtkInformation *	GetNamedFieldInformation (vtkInformation *info, int fieldAssociation, const char *name)
	Return the information object within the input information object's field data corresponding to the specified association (FIELD_ASSOCIATION_POINTS or FIELD_ASSOCIATION_CELLS) and name.
static void	RemoveNamedFieldInformation (vtkInformation *info, int fieldAssociation, const char *name)
	Remove the info associated with an array.
static vtkInformation *	SetActiveAttribute (vtkInformation *info, int fieldAssociation, const char *attributeName, int attributeType)
	Set the named array to be the active field for the specified type (SCALARS, VECTORS, NORMALS, TCOORDS, or TENSORS) and association (FIELD_ASSOCIATION_POINTS or FIELD_ASSOCIATION_CELLS).
static void	SetActiveAttributeInfo (vtkInformation *info, int fieldAssociation, int attributeType, const char *name, int arrayType, int numComponents, int numTuples)
	Set the name, array type, number of components, and number of tuples within the passed information object for the active attribute of type attributeType (in specified association, FIELD_ASSOCIATION_POINTS or FIELD_ASSOCIATION_CELLS).
static void	SetPointDataActiveScalarInfo (vtkInformation *info, int arrayType, int numComponents)
	Convenience version of previous method for use (primarily) by the Imaging filters.
static const char *	GetAssociationTypeAsString (int associationType)
	Given an integer association type, this static method returns a string type for the attribute (i.e.
static int	GetAssociationTypeFromString (const char *associationName)
	Given a string association name, this static method returns an integer association type for the attribute (i.e.
static vtkInformationStringKey *	DATA_TYPE_NAME ()
static vtkInformationDataObjectKey *	DATA_OBJECT ()
static vtkInformationIntegerKey *	DATA_EXTENT_TYPE ()
static vtkInformationIntegerPointerKey *	DATA_EXTENT ()
static vtkInformationIntegerVectorKey *	ALL_PIECES_EXTENT ()
static vtkInformationIntegerKey *	DATA_PIECE_NUMBER ()
static vtkInformationIntegerKey *	DATA_NUMBER_OF_PIECES ()
static vtkInformationIntegerKey *	DATA_NUMBER_OF_GHOST_LEVELS ()
static vtkInformationDoubleKey *	DATA_TIME_STEP ()
static vtkInformationInformationVectorKey *	POINT_DATA_VECTOR ()
static vtkInformationInformationVectorKey *	CELL_DATA_VECTOR ()
static vtkInformationInformationVectorKey *	VERTEX_DATA_VECTOR ()
static vtkInformationInformationVectorKey *	EDGE_DATA_VECTOR ()
static vtkInformationIntegerKey *	FIELD_ARRAY_TYPE ()
static vtkInformationIntegerKey *	FIELD_ASSOCIATION ()
static vtkInformationIntegerKey *	FIELD_ATTRIBUTE_TYPE ()
static vtkInformationIntegerKey *	FIELD_ACTIVE_ATTRIBUTE ()
static vtkInformationIntegerKey *	FIELD_NUMBER_OF_COMPONENTS ()
static vtkInformationIntegerKey *	FIELD_NUMBER_OF_TUPLES ()
static vtkInformationIntegerKey *	FIELD_OPERATION ()
static vtkInformationDoubleVectorKey *	FIELD_RANGE ()
static vtkInformationIntegerVectorKey *	PIECE_EXTENT ()
static vtkInformationStringKey *	FIELD_NAME ()
static vtkInformationDoubleVectorKey *	ORIGIN ()
static vtkInformationDoubleVectorKey *	SPACING ()
static vtkInformationDoubleVectorKey *	DIRECTION ()
static vtkInformationDoubleVectorKey *	BOUNDING_BOX ()
static vtkInformationDataObjectKey *	SIL ()
static vtkDataObject *	GetData (vtkInformation *info)
	Retrieve an instance of this class from an information object.
static vtkDataObject *	GetData (vtkInformationVector *v, int i=0)
	Retrieve an instance of this class from an information object.
static void	SetGlobalReleaseDataFlag (vtkTypeBool val)
	Turn on/off flag to control whether every object releases its data after being used by a filter.
static vtkTypeBool	GetGlobalReleaseDataFlag ()
	Turn on/off flag to control whether every object releases its data after being used by a filter.
Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.
static void	SetGlobalWarningDisplay (vtkTypeBool val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.
static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.
static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.
static vtkTypeBool	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.
Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.
static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.
static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkReebGraph ()
	~vtkReebGraph () override
Protected Member Functions inherited from vtkMutableDirectedGraph
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkMutableDirectedGraph ()
	~vtkMutableDirectedGraph () override
Protected Member Functions inherited from vtkDirectedGraph
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkDirectedGraph ()
	~vtkDirectedGraph () override
Protected Member Functions inherited from vtkGraph
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkGraph ()
	~vtkGraph () override
void	AddVertexInternal (vtkVariantArray *propertyArr=nullptr, vtkIdType *vertex=nullptr)
	Protected method for adding vertices, optionally with properties, used by mutable subclasses.
void	AddVertexInternal (const vtkVariant &pedigree, vtkIdType *vertex)
	Adds a vertex with the given pedigree ID to the graph.
void	RemoveVertexInternal (vtkIdType v, bool directed)
	Removes a vertex from the graph, along with any adjacent edges.
void	RemoveEdgeInternal (vtkIdType e, bool directed)
	Removes an edge from the graph.
void	RemoveVerticesInternal (vtkIdTypeArray *arr, bool directed)
	Removes a collection of vertices from the graph, along with any adjacent edges.
void	RemoveEdgesInternal (vtkIdTypeArray *arr, bool directed)
	Removes a collection of edges from the graph.
virtual bool	IsStructureValid (vtkGraph *g)=0
	Subclasses override this method to accept the structure based on their requirements.
virtual void	CopyInternal (vtkGraph *g, bool deep)
	Copy internal data structure.
void	SetInternals (vtkGraphInternals *internals)
	Private method for setting internals.
void	SetEdgePoints (vtkGraphEdgePoints *edgePoints)
	Private method for setting edge points.
void	ForceOwnership ()
	If this instance does not own its internals, it makes a copy of the internals.
void	BuildEdgeList ()
	Builds a mapping from edge id to source/target vertex id.
void	AddEdgeInternal (vtkIdType u, vtkIdType v, bool directed, vtkVariantArray *propertyArr, vtkEdgeType *edge)
	Protected method for adding edges of a certain directedness used by mutable subclasses.
void	AddEdgeInternal (const vtkVariant &uPedigree, vtkIdType v, bool directed, vtkVariantArray *propertyArr, vtkEdgeType *edge)
	Protected method for adding edges of a certain directedness used by mutable subclasses.
void	AddEdgeInternal (vtkIdType u, const vtkVariant &vPedigree, bool directed, vtkVariantArray *propertyArr, vtkEdgeType *edge)
	Protected method for adding edges of a certain directedness used by mutable subclasses.
void	AddEdgeInternal (const vtkVariant &uPedigree, const vtkVariant &vPedigree, bool directed, vtkVariantArray *propertyArr, vtkEdgeType *edge)
	Protected method for adding edges of a certain directedness used by mutable subclasses.
virtual void	GetOutEdges (vtkIdType v, const vtkOutEdgeType *&edges, vtkIdType &nedges)
	Fast access functions for iterators.
virtual void	GetInEdges (vtkIdType v, const vtkInEdgeType *&edges, vtkIdType &nedges)
	Fast access functions for iterators.
virtual vtkIdTypeArray *	GetEdgeList ()
	The optional mapping from edge id to source/target ids.
virtual void	SetEdgeList (vtkIdTypeArray *list)
	The optional mapping from edge id to source/target ids.
Protected Member Functions inherited from vtkDataObject
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkDataObject ()
	~vtkDataObject () override
Protected Member Functions inherited from vtkObject
	vtkObject ()
	~vtkObject () override
void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override
void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override
void	InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.
void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.
Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()
virtual	~vtkObjectBase ()
virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)
virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)
virtual void	ReportReferences (vtkGarbageCollector *)
virtual void	ObjectFinalize ()
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
Implementation *	Storage
Protected Attributes inherited from vtkMutableDirectedGraph
vtkGraphEdge *	GraphEdge
	Graph edge that is reused of AddGraphEdge calls.
Protected Attributes inherited from vtkGraph
vtkGraphInternals *	Internals
	The adjacency list internals of this graph.
vtkDistributedGraphHelper *	DistributedHelper
	The distributed graph helper.
vtkGraphEdgePoints *	EdgePoints
	The structure for holding the edge points.
double	Bounds [6]
	(xmin,xmax, ymin,ymax, zmin,zmax) geometric bounds.
vtkTimeStamp	ComputeTime
	Time at which bounds were computed.
vtkDataSetAttributes *	VertexData
	The vertex and edge data.
vtkDataSetAttributes *	EdgeData
	The vertex and edge data.
vtkPoints *	Points
	The vertex locations.
vtkIdTypeArray *	EdgeList
	The optional mapping from edge id to source/target ids.
Protected Attributes inherited from vtkDataObject
vtkFieldData *	FieldData
vtkTypeBool	DataReleased
vtkTimeStamp	UpdateTime
vtkInformation *	Information
Protected Attributes inherited from vtkObject
bool	Debug
vtkTimeStamp	MTime
vtkSubjectHelper *	SubjectHelper
std::string	ObjectName
Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount
vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()
static vtkReallocingFunction	GetCurrentReallocFunction ()
static vtkFreeingFunction	GetCurrentFreeFunction ()
static vtkFreeingFunction	GetAlternateFreeFunction ()
Static Protected Attributes inherited from vtkGraph
static double	DefaultPoint [3]
	The vertex locations.

Detailed Description

Reeb graph computation for PL scalar fields.

vtkReebGraph is a class that computes a Reeb graph given a PL scalar field (vtkDataArray) defined on a simplicial mesh. A Reeb graph is a concise representation of the connectivity evolution of the level sets of a scalar function.

It is particularly useful in visualization (optimal seed set computation, fast flexible isosurface extraction, automated transfer function design, feature-driven visualization, etc.) and computer graphics (shape deformation, shape matching, shape compression, etc.).

Reference: "Sur les points singuliers d'une forme de Pfaff completement integrable ou d'une fonction numerique", G. Reeb, Comptes-rendus de l'Academie des Sciences, 222:847-849, 1946.

vtkReebGraph implements one of the latest and most robust Reeb graph computation algorithms.

Reference: "Robust on-line computation of Reeb graphs: simplicity and speed", V. Pascucci, G. Scorzelli, P.-T. Bremer, and A. Mascarenhas, ACM Transactions on Graphics, Proc. of SIGGRAPH 2007.

vtkReebGraph provides methods for computing multi-resolution topological hierarchies through topological simplification. Topoligical simplification can be either driven by persistence homology concepts (default behavior) or by application specific metrics (see vtkReebGraphSimplificationMetric). In the latter case, designing customized simplification metric evaluation algorithms enables the user to control the definition of what should be considered as noise or signal in the topological filtering process.

References: "Topological persistence and simplification", H. Edelsbrunner, D. Letscher, and A. Zomorodian, Discrete Computational Geometry, 28:511-533, 2002.

"Extreme elevation on a 2-manifold", P.K. Agarwal, H. Edelsbrunner, J. Harer, and Y. Wang, ACM Symposium on Computational Geometry, pp. 357-365, 2004.

"Simplifying flexible isosurfaces using local geometric measures", H. Carr, J. Snoeyink, M van de Panne, IEEE Visualization, 497-504, 2004

"Loop surgery for volumetric meshes: Reeb graphs reduced to contour trees", J. Tierny, A. Gyulassy, E. Simon, V. Pascucci, IEEE Trans. on Vis. and Comp. Graph. (Proc of IEEE VIS), 15:1177-1184, 2009.

Reeb graphs can be computed from 2D data (vtkPolyData, with triangles only) or 3D data (vtkUnstructuredGrid, with tetrahedra only), sequentially (see the "Build" calls) or in streaming (see the "StreamTriangle" and "StreamTetrahedron" calls).

vtkReebGraph inherits from vtkMutableDirectedGraph.

Each vertex of a vtkReebGraph object represents a critical point of the scalar field where the connectivity of the related level set changes (creation, deletion, split or merge of connected components). A vtkIdTypeArray (called "Vertex Ids") is associated with the VertexData of a vtkReebGraph object, in order to retrieve if necessary the exact Ids of the corresponding vertices in the input mesh.

The edges of a vtkReebGraph object represent the regions of the input mesh separated by the critical contours of the field, and where the connectivity of the input field does not change. A vtkVariantArray is associated with the EdgeDta of a vtkReebGraph object and each entry of this array is a vtkAbstractArray containing the Ids of the vertices of those regions, sorted by function value (useful for flexible isosurface extraction or level set signature computation, for instance).

See Graphics/Testing/Cxx/TestReebGraph.cxx for examples of traversals and typical usages (customized simplification, skeletonization, contour spectra, etc.) of a vtkReebGraph object.

See also

vtkReebGraphSimplificationMetric vtkPolyDataToReebGraphFilter vtkUnstructuredGridToReebGraphFilter vtkReebGraphSimplificationFilter vtkReebGraphSurfaceSkeletonFilter vtkReebGraphVolumeSkeletonFilter vtkAreaContourSpectrumFilter vtkVolumeContourSpectrumFilter

Tests:

Graphics/Testing/Cxx/TestReebGraph.cxx

Tests:

vtkReebGraph (Tests)

Definition at line 120 of file vtkReebGraph.h.

Member Typedef Documentation

Superclass

typedef vtkMutableDirectedGraph vtkReebGraph::Superclass

Definition at line 126 of file vtkReebGraph.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
ERR_INCORRECT_FIELD
ERR_NO_SUCH_FIELD
ERR_NOT_A_SIMPLICIAL_MESH

Definition at line 138 of file vtkReebGraph.h.

Constructor & Destructor Documentation

vtkReebGraph()

vtkReebGraph::vtkReebGraph ( )

protected

~vtkReebGraph()

vtkReebGraph::~vtkReebGraph ( )

overrideprotected

Member Function Documentation

New()

static vtkReebGraph * vtkReebGraph::New ( )

static

IsTypeOf()

static vtkTypeBool vtkReebGraph::IsTypeOf ( const char *  type )

static

IsA()

virtual vtkTypeBool vtkReebGraph::IsA ( const char *  name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkMutableDirectedGraph.

SafeDownCast()

static vtkReebGraph * vtkReebGraph::SafeDownCast ( vtkObjectBase *  o )

static

NewInstanceInternal()

virtual vtkObjectBase * vtkReebGraph::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkMutableDirectedGraph.

NewInstance()

vtkReebGraph * vtkReebGraph::NewInstance

(

)

const

PrintSelf()

void vtkReebGraph::PrintSelf ( ostream &  os, vtkIndent  indent  )

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkMutableDirectedGraph.

PrintNodeData()

void vtkReebGraph::PrintNodeData	(	ostream &	os,
		vtkIndent	indent
	)

GetDataObjectType()

int vtkReebGraph::GetDataObjectType ( )

inlineoverridevirtual

Return class name of data type.

This is one of VTK_STRUCTURED_GRID, VTK_STRUCTURED_POINTS, VTK_UNSTRUCTURED_GRID, VTK_POLY_DATA, or VTK_RECTILINEAR_GRID (see vtkSetGet.h for definitions). THIS METHOD IS THREAD SAFE

Reimplemented from vtkDirectedGraph.

Definition at line 136 of file vtkReebGraph.h.

Build() [1/6]

int vtkReebGraph::Build	(	vtkPolyData *	mesh,
		vtkDataArray *	scalarField
	)

Build the Reeb graph of the field 'scalarField' defined on the surface mesh 'mesh'.

Returned values:

vtkReebGraph::ERR_INCORRECT_FIELD: 'scalarField' does not have as many tuples as 'mesh' has vertices.

vtkReebGraph::ERR_NOT_A_SIMPLICIAL_MESH: the input mesh 'mesh' is not a simplicial mesh (for example, the surface mesh contains quads instead of triangles).

Build() [2/6]

int vtkReebGraph::Build	(	vtkUnstructuredGrid *	mesh,
		vtkDataArray *	scalarField
	)

Build the Reeb graph of the field 'scalarField' defined on the volume mesh 'mesh'.

Returned values:

vtkReebGraph::ERR_INCORRECT_FIELD: 'scalarField' does not have as many tuples as 'mesh' has vertices.

vtkReebGraph::ERR_NOT_A_SIMPLICIAL_MESH: the input mesh 'mesh' is not a simplicial mesh.

Build() [3/6]

int vtkReebGraph::Build	(	vtkPolyData *	mesh,
		vtkIdType	scalarFieldId
	)

Build the Reeb graph of the field given by the Id 'scalarFieldId', defined on the surface mesh 'mesh'.

Returned values:

vtkReebGraph::ERR_INCORRECT_FIELD: 'scalarField' does not have as many tuples as 'mesh' as vertices.

vtkReebGraph::ERR_NOT_A_SIMPLICIAL_MESH: the input mesh 'mesh' is not a simplicial mesh (for example, the surface mesh contains quads instead of triangles).

vtkReebGraph::ERR_NO_SUCH_FIELD: the scalar field given by the Id 'scalarFieldId' does not exist.

Build() [4/6]

int vtkReebGraph::Build	(	vtkUnstructuredGrid *	mesh,
		vtkIdType	scalarFieldId
	)

Build the Reeb graph of the field given by the Id 'scalarFieldId', defined on the volume mesh 'mesh'.

Returned values:

vtkReebGraph::ERR_INCORRECT_FIELD: 'scalarField' does not have as many tuples as 'mesh' as vertices.

vtkReebGraph::ERR_NOT_A_SIMPLICIAL_MESH: the input mesh 'mesh' is not a simplicial mesh.

vtkReebGraph::ERR_NO_SUCH_FIELD: the scalar field given by the Id 'scalarFieldId' does not exist.

Build() [5/6]

int vtkReebGraph::Build	(	vtkPolyData *	mesh,
		const char *	scalarFieldName
	)

Build the Reeb graph of the field given by the name 'scalarFieldName', defined on the surface mesh 'mesh'.

Returned values:

vtkReebGraph::ERR_INCORRECT_FIELD: 'scalarField' does not have as many tuples as 'mesh' as vertices.

vtkReebGraph::ERR_NOT_A_SIMPLICIAL_MESH: the input mesh 'mesh' is not a simplicial mesh (for example, the surface mesh contains quads instead of triangles).

vtkReebGraph::ERR_NO_SUCH_FIELD: the scalar field given by the name 'scalarFieldName' does not exist.

Build() [6/6]

int vtkReebGraph::Build	(	vtkUnstructuredGrid *	mesh,
		const char *	scalarFieldName
	)

Build the Reeb graph of the field given by the name 'scalarFieldName', defined on the volume mesh 'mesh'.

Returned values:

vtkReebGraph::ERR_INCORRECT_FIELD: 'scalarField' does not have as many tuples as 'mesh' as vertices.

vtkReebGraph::ERR_NOT_A_SIMPLICIAL_MESH: the input mesh 'mesh' is not a simplicial mesh.

vtkReebGraph::ERR_NO_SUCH_FIELD: the scalar field given by the name 'scalarFieldName' does not exist.

StreamTriangle()

int vtkReebGraph::StreamTriangle	(	vtkIdType	vertex0Id,
		double	scalar0,
		vtkIdType	vertex1Id,
		double	scalar1,
		vtkIdType	vertex2Id,
		double	scalar2
	)

Streaming Reeb graph computation.

Add to the streaming computation the triangle of the vtkPolyData surface mesh described by vertex0Id, scalar0 vertex1Id, scalar1 vertex2Id, scalar2

where vertexNId is the Id of the vertex in the vtkPolyData structure and scalarN is the corresponding scalar field value.

IMPORTANT: The stream must be finalized with the "CloseStream" call.

StreamTetrahedron()

int vtkReebGraph::StreamTetrahedron	(	vtkIdType	vertex0Id,
		double	scalar0,
		vtkIdType	vertex1Id,
		double	scalar1,
		vtkIdType	vertex2Id,
		double	scalar2,
		vtkIdType	vertex3Id,
		double	scalar3
	)

Streaming Reeb graph computation.

Add to the streaming computation the tetrahedra of the vtkUnstructuredGrid volume mesh described by vertex0Id, scalar0 vertex1Id, scalar1 vertex2Id, scalar2 vertex3Id, scalar3

where vertexNId is the Id of the vertex in the vtkUnstructuredGrid structure and scalarN is the corresponding scalar field value.

IMPORTANT: The stream must be finalized with the "CloseStream" call.

CloseStream()

void vtkReebGraph::CloseStream

(

)

Finalize internal data structures, in the case of streaming computations (with StreamTriangle or StreamTetrahedron).

After this call, no more triangle or tetrahedron can be inserted via StreamTriangle or StreamTetrahedron. IMPORTANT: This method must be called when the input stream is finished. If you need to get a snapshot of the Reeb graph during the streaming process (to parse or simplify it), do a DeepCopy followed by a CloseStream on the copy.

DeepCopy()

void vtkReebGraph::DeepCopy ( vtkDataObject *  obj )

overridevirtual

Deep copies the data object into this graph.

If it is an incompatible graph, reports an error.

Reimplemented from vtkGraph.

Simplify()

int vtkReebGraph::Simplify	(	double	simplificationThreshold,
		vtkReebGraphSimplificationMetric *	simplificationMetric
	)

Simplify the Reeb graph given a threshold 'simplificationThreshold' (between 0 and 1).

This method is the core feature for Reeb graph multi-resolution hierarchy construction.

Return the number of arcs that have been removed through the simplification process.

'simplificationThreshold' represents a "scale", under which each Reeb graph feature is considered as noise. 'simplificationThreshold' is expressed as a fraction of the scalar field overall span. It can vary from 0 (no simplification) to 1 (maximal simplification).

'simplificationMetric' is an object in charge of evaluating the importance of a Reeb graph arc at each step of the simplification process. if 'simplificationMetric' is nullptr, the default strategy (persitence of the scalar field) is used. Customized simplification metric evaluation algorithm can be designed (see vtkReebGraphSimplificationMetric), enabling the user to control the definition of what should be considered as noise or signal.

References:

"Topological persistence and simplification", H. Edelsbrunner, D. Letscher, and A. Zomorodian, Discrete Computational Geometry, 28:511-533, 2002.

"Extreme elevation on a 2-manifold", P.K. Agarwal, H. Edelsbrunner, J. Harer, and Y. Wang, ACM Symposium on Computational Geometry, pp. 357-365, 2004.

"Simplifying flexible isosurfaces using local geometric measures", H. Carr, J. Snoeyink, M van de Panne, IEEE Visualization, 497-504, 2004

"Loop surgery for volumetric meshes: Reeb graphs reduced to contour trees", J. Tierny, A. Gyulassy, E. Simon, V. Pascucci, IEEE Trans. on Vis. and Comp. Graph. (Proc of IEEE VIS), 15:1177-1184,2009.

Set()

void vtkReebGraph::Set

(

vtkMutableDirectedGraph *

g

)

Use a pre-defined Reeb graph (post-processing).

Use with caution!

Member Data Documentation

Storage

Implementation* vtkReebGraph::Storage

protected

Definition at line 348 of file vtkReebGraph.h.

---

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

• Common/DataModel/vtkReebGraph.h