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vtkLabelHierarchy Class Reference

contains an octree of labels More...

#include <vtkLabelHierarchy.h>

Inheritance diagram for vtkLabelHierarchy:
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Collaboration diagram for vtkLabelHierarchy:
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Classes

class  Implementation
 

Public Types

enum  IteratorType { FULL_SORT , QUEUE , DEPTH_FIRST , FRUSTUM }
 Enumeration of iterator types. More...
 
typedef vtkPointSet Superclass
 
- Public Types inherited from vtkPointSet
typedef vtkDataSet Superclass
 Standard methods for type information and printing. More...
 
- Public Types inherited from vtkDataSet
enum  FieldDataType { DATA_OBJECT_FIELD = 0 , POINT_DATA_FIELD = 1 , CELL_DATA_FIELD = 2 }
 
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)
 Standard methods for type information and printing. More...
 
vtkLabelHierarchyNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Standard methods for type information and printing. More...
 
void SetPoints (vtkPoints *) override
 Override SetPoints so we can reset the hierarchy when the points change. More...
 
virtual void ComputeHierarchy ()
 Fill the hierarchy with the input labels. More...
 
vtkLabelHierarchyIteratorNewIterator (int type, vtkRenderer *ren, vtkCamera *cam, double frustumPlanes[24], bool positionsAsNormals, float bucketSize[2])
 Returns an iterator for this data object. More...
 
void GetDiscreteNodeCoordinatesFromWorldPoint (int ijk[3], double pt[3], int level)
 Given a depth in the hierarchy (level) and a point pt in world space, compute ijk. More...
 
ImplementationGetImplementation ()
 
virtual void SetTargetLabelCount (int)
 The number of labels that is ideally present at any octree node. More...
 
virtual int GetTargetLabelCount ()
 The number of labels that is ideally present at any octree node. More...
 
virtual void SetMaximumDepth (int)
 The maximum depth of the octree. More...
 
virtual int GetMaximumDepth ()
 The maximum depth of the octree. More...
 
virtual void SetTextProperty (vtkTextProperty *tprop)
 The default text property assigned to labels in this hierarchy. More...
 
virtual vtkTextPropertyGetTextProperty ()
 The default text property assigned to labels in this hierarchy. More...
 
virtual void SetPriorities (vtkDataArray *arr)
 Set/get the array specifying the importance (priority) of each label. More...
 
virtual vtkDataArrayGetPriorities ()
 Set/get the array specifying the importance (priority) of each label. More...
 
virtual void SetLabels (vtkAbstractArray *arr)
 Set/get the array specifying the text of each label. More...
 
virtual vtkAbstractArrayGetLabels ()
 Set/get the array specifying the text of each label. More...
 
virtual void SetOrientations (vtkDataArray *arr)
 Set/get the array specifying the orientation of each label. More...
 
virtual vtkDataArrayGetOrientations ()
 Set/get the array specifying the orientation of each label. More...
 
virtual void SetIconIndices (vtkIntArray *arr)
 Set/get the array specifying the icon index of each label. More...
 
virtual vtkIntArrayGetIconIndices ()
 Set/get the array specifying the icon index of each label. More...
 
virtual void SetSizes (vtkDataArray *arr)
 Set/get the array specifying the size of each label. More...
 
virtual vtkDataArrayGetSizes ()
 Set/get the array specifying the size of each label. More...
 
virtual void SetBoundedSizes (vtkDataArray *arr)
 Set/get the array specifying the maximum width and height in world coordinates of each label. More...
 
virtual vtkDataArrayGetBoundedSizes ()
 Set/get the array specifying the maximum width and height in world coordinates of each label. More...
 
vtkIdType GetNumberOfCells () override
 Inherited members (from vtkDataSet) More...
 
vtkCellGetCell (vtkIdType) override
 Inherited members (from vtkDataSet) More...
 
void GetCell (vtkIdType, vtkGenericCell *) override
 Inherited members (from vtkDataSet) More...
 
int GetCellType (vtkIdType) override
 Inherited members (from vtkDataSet) More...
 
void GetCellPoints (vtkIdType, vtkIdList *) override
 Inherited members (from vtkDataSet) More...
 
void GetPointCells (vtkIdType, vtkIdList *) override
 Inherited members (from vtkDataSet) More...
 
vtkIdType FindCell (double *, vtkCell *, vtkIdType, double, int &, double *, double *) override
 Inherited members (from vtkDataSet) More...
 
vtkIdType FindCell (double *, vtkCell *, vtkGenericCell *, vtkIdType, double, int &, double *, double *) override
 Inherited members (from vtkDataSet) More...
 
int GetMaxCellSize () override
 Inherited members (from vtkDataSet) More...
 
virtual vtkCellGetCell (vtkIdType cellId)=0
 Get cell with cellId such that: 0 <= cellId < NumberOfCells. More...
 
virtual vtkCellGetCell (int vtkNotUsed(i), int vtkNotUsed(j), int vtkNotUsed(k))
 Inherited members (from vtkDataSet) More...
 
virtual void GetCell (vtkIdType cellId, vtkGenericCell *cell)=0
 Get cell with cellId such that: 0 <= cellId < NumberOfCells. More...
 
virtual vtkPointsGetCenterPts ()
 Provide access to original coordinates of sets of coincident points. More...
 
virtual vtkCoincidentPointsGetCoincidentPoints ()
 Provide access to the set of coincident points that have been perturbed by the hierarchy in order to render labels for each without overlap. More...
 
- Public Member Functions inherited from vtkPointSet
int GetDataObjectType () override
 Standard vtkDataSet API methods. More...
 
void Initialize () override
 Reset to an empty state and free any memory. More...
 
void CopyStructure (vtkDataSet *pd) override
 Copy the geometric structure of an input point set object. More...
 
vtkIdType GetCellSize (vtkIdType) override
 This method always returns 1, as all cells are point in a pure vtkPointSet. More...
 
double * GetPoint (vtkIdType ptId) override
 See vtkDataSet for additional information. More...
 
vtkCellIteratorNewCellIterator () override
 Return an iterator that traverses the cells in this data set. More...
 
void BuildCellLocator ()
 Build the cell locator. More...
 
vtkMTimeType GetMTime () override
 Get MTime which also considers its vtkPoints MTime. More...
 
void ComputeBounds () override
 Compute the (X, Y, Z) bounds of the data. More...
 
void Squeeze () override
 Reclaim any unused memory. More...
 
unsigned long GetActualMemorySize () override
 Return the actual size of the data in kibibytes (1024 bytes). More...
 
virtual void SetEditable (bool)
 Specify whether this dataset is editable after creation. More...
 
virtual bool GetEditable ()
 Specify whether this dataset is editable after creation. More...
 
virtual void EditableOn ()
 Specify whether this dataset is editable after creation. More...
 
virtual void EditableOff ()
 Specify whether this dataset is editable after creation. More...
 
vtkIdType GetNumberOfPoints () override
 See vtkDataSet for additional information. More...
 
void GetPoint (vtkIdType ptId, double x[3]) override
 See vtkDataSet for additional information. More...
 
vtkIdType FindPoint (double x[3]) override
 See vtkDataSet for additional information. More...
 
vtkIdType FindCell (double x[3], vtkCell *cell, vtkIdType cellId, double tol2, int &subId, double pcoords[3], double *weights) override
 See vtkDataSet for additional information. More...
 
vtkIdType FindCell (double x[3], vtkCell *cell, vtkGenericCell *gencell, vtkIdType cellId, double tol2, int &subId, double pcoords[3], double *weights) override
 See vtkDataSet for additional information. More...
 
virtual void GetCellPoints (vtkIdType cellId, vtkIdList *ptIds)=0
 This method resets parameter idList, as there is no cell in a vtkPointSet. More...
 
virtual void GetCellPoints (vtkIdType cellId, vtkIdType &npts, vtkIdType const *&pts, vtkIdList *ptIds)
 This method resets parameter idList, as there is no cell in a vtkPointSet. More...
 
void BuildPointLocator ()
 Build the internal point locator . More...
 
void BuildLocator ()
 Build the internal point locator . More...
 
virtual void SetPointLocator (vtkAbstractPointLocator *)
 Set / get an instance of vtkAbstractPointLocator which is used to support the FindPoint() and FindCell() methods. More...
 
virtual vtkAbstractPointLocatorGetPointLocator ()
 Set / get an instance of vtkAbstractPointLocator which is used to support the FindPoint() and FindCell() methods. More...
 
virtual void SetCellLocator (vtkAbstractCellLocator *)
 Set / get an instance of vtkAbstractCellLocator which may be used when a vtkCellLocatorStrategy is used during a FindCell() operation. More...
 
virtual vtkAbstractCellLocatorGetCellLocator ()
 Set / get an instance of vtkAbstractCellLocator which may be used when a vtkCellLocatorStrategy is used during a FindCell() operation. More...
 
vtkPointsGetPoints () override
 Specify point array to define point coordinates. More...
 
void ShallowCopy (vtkDataObject *src) override
 Shallow and Deep copy. More...
 
void DeepCopy (vtkDataObject *src) override
 Shallow and Deep copy. More...
 
bool UsesGarbageCollector () const override
 Overwritten to handle the data/locator loop. More...
 
vtkPointSetNewInstance () const
 Standard methods for type information and printing. More...
 
- Public Member Functions inherited from vtkDataSet
vtkDataSetNewInstance () const
 
virtual void CopyAttributes (vtkDataSet *ds)
 Copy the attributes associated with the specified dataset to this instance of vtkDataSet. More...
 
virtual vtkCellGetCell (int vtkNotUsed(i), int vtkNotUsed(j), int vtkNotUsed(k))
 
void SetCellOrderAndRationalWeights (vtkIdType cellId, vtkGenericCell *cell)
 
virtual void GetCellBounds (vtkIdType cellId, double bounds[6])
 Get the bounds of the cell with cellId such that: 0 <= cellId < NumberOfCells. More...
 
virtual void GetCellTypes (vtkCellTypes *types)
 Get a list of types of cells in a dataset. More...
 
virtual void GetCellPoints (vtkIdType cellId, vtkIdType &npts, vtkIdType const *&pts, vtkIdList *ptIds)
 Topological inquiry to get points defining cell. More...
 
virtual void GetCellNeighbors (vtkIdType cellId, vtkIdList *ptIds, vtkIdList *cellIds)
 Topological inquiry to get all cells using list of points exclusive of cell specified (e.g., cellId). More...
 
int GetCellNumberOfFaces (vtkIdType cellId, unsigned char &cellType, vtkGenericCell *cell)
 Get the number of faces of a cell. More...
 
virtual vtkCellFindAndGetCell (double x[3], vtkCell *cell, vtkIdType cellId, double tol2, int &subId, double pcoords[3], double *weights)
 Locate the cell that contains a point and return the cell. More...
 
vtkCellDataGetCellData ()
 Return a pointer to this dataset's cell data. More...
 
vtkPointDataGetPointData ()
 Return a pointer to this dataset's point data. More...
 
double * GetBounds ()
 Return a pointer to the geometry bounding box in the form (xmin,xmax, ymin,ymax, zmin,zmax). More...
 
void GetBounds (double bounds[6])
 Return a pointer to the geometry bounding box in the form (xmin,xmax, ymin,ymax, zmin,zmax). More...
 
double * GetCenter ()
 Get the center of the bounding box. More...
 
void GetCenter (double center[3])
 Get the center of the bounding box. More...
 
double GetLength ()
 Return the length of the diagonal of the bounding box. More...
 
double GetLength2 ()
 Return the squared length of the diagonal of the bounding box. More...
 
virtual void GetScalarRange (double range[2])
 Convenience method to get the range of the first component (and only the first component) of any scalars in the data set. More...
 
double * GetScalarRange ()
 Convenience method to get the range of the first component (and only the first component) of any scalars in the data set. More...
 
virtual int GetMaxSpatialDimension ()
 Get the maximum spatial dimensionality of the data which is the maximum dimension of all cells. More...
 
int CheckAttributes ()
 This method checks to see if the cell and point attributes match the geometry. More...
 
vtkFieldDataGetAttributesAsFieldData (int type) override
 Returns the attributes of the data object as a vtkFieldData. More...
 
vtkIdType GetNumberOfElements (int type) override
 Get the number of elements for a specific attribute type (POINT, CELL, etc.). More...
 
bool HasAnyGhostCells ()
 Returns 1 if there are any ghost cells 0 otherwise. More...
 
bool HasAnyGhostPoints ()
 Returns 1 if there are any ghost points 0 otherwise. More...
 
virtual bool HasAnyBlankCells ()
 Returns 1 if there are any blanking cells 0 otherwise. More...
 
virtual bool HasAnyBlankPoints ()
 Returns 1 if there are any blanking points 0 otherwise. More...
 
vtkUnsignedCharArrayGetPointGhostArray ()
 Gets the array that defines the ghost type of each point. More...
 
void UpdatePointGhostArrayCache ()
 Updates the pointer to the point ghost array. More...
 
vtkUnsignedCharArrayAllocatePointGhostArray ()
 Allocate ghost array for points. More...
 
vtkUnsignedCharArrayGetCellGhostArray ()
 Get the array that defines the ghost type of each cell. More...
 
void UpdateCellGhostArrayCache ()
 Updates the pointer to the cell ghost array. More...
 
vtkUnsignedCharArrayAllocateCellGhostArray ()
 Allocate ghost array for cells. More...
 
vtkUnsignedCharArrayGetGhostArray (int type) override
 Returns the ghost array for the given type (point or cell). More...
 
bool SupportsGhostArray (int type) override
 Returns true for POINT or CELL, false otherwise. More...
 
vtkIdType FindPoint (double x, double y, double z)
 Locate the closest point to the global coordinate x. More...
 
virtual void GenerateGhostArray (int zeroExt[6])
 Normally called by pipeline executives or algorithms only. More...
 
virtual void GenerateGhostArray (int zeroExt[6], bool cellOnly)
 Normally called by pipeline executives or algorithms only. More...
 
- Public Member Functions inherited from vtkDataObject
vtkDataObjectNewInstance () const
 
void ReleaseData ()
 Release data back to system to conserve memory resource. More...
 
vtkMTimeType GetUpdateTime ()
 Used by Threaded ports to determine if they should initiate an asynchronous update (still in development). More...
 
virtual void CopyInformationFromPipeline (vtkInformation *vtkNotUsed(info))
 Copy from the pipeline information to the data object's own information. More...
 
virtual void CopyInformationToPipeline (vtkInformation *vtkNotUsed(info))
 Copy information from this data object to the pipeline information. More...
 
void DataHasBeenGenerated ()
 This method is called by the source when it executes to generate data. More...
 
virtual void PrepareForNewData ()
 make the output data ready for new data to be inserted. More...
 
virtual int GetExtentType ()
 The ExtentType will be left as VTK_PIECES_EXTENT for data objects such as vtkPolyData and vtkUnstructuredGrid. More...
 
virtual void Crop (const int *updateExtent)
 This method crops the data object (if necessary) so that the extent matches the update extent. More...
 
virtual vtkDataSetAttributesGetAttributes (int type)
 Returns the attributes of the data object of the specified attribute type. More...
 
virtual int GetAttributeTypeForArray (vtkAbstractArray *arr)
 Retrieves the attribute type that an array came from. More...
 
virtual vtkInformationGetInformation ()
 Set/Get the information object associated with this data object. More...
 
virtual void SetInformation (vtkInformation *)
 Set/Get the information object associated with this data object. More...
 
virtual vtkTypeBool GetDataReleased ()
 Get the flag indicating the data has been released. More...
 
virtual void SetFieldData (vtkFieldData *)
 Assign or retrieve a general field data to this data object. More...
 
virtual vtkFieldDataGetFieldData ()
 Assign or retrieve a general field data to this data object. More...
 
void GlobalReleaseDataFlagOn ()
 Turn on/off flag to control whether every object releases its data after being used by a filter. More...
 
void GlobalReleaseDataFlagOff ()
 Turn on/off flag to control whether every object releases its data after being used by a filter. More...
 
- Public Member Functions inherited from vtkObject
 vtkBaseTypeMacro (vtkObject, vtkObjectBase)
 
virtual void DebugOn ()
 Turn debugging output on. More...
 
virtual void DebugOff ()
 Turn debugging output off. More...
 
bool GetDebug ()
 Get the value of the debug flag. More...
 
void SetDebug (bool debugFlag)
 Set the value of the debug flag. More...
 
virtual void Modified ()
 Update the modification time for this object. More...
 
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. More...
 
unsigned long AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
unsigned long AddObserver (const char *event, vtkCommand *, float priority=0.0f)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
vtkCommandGetCommand (unsigned long tag)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
void RemoveObserver (vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
void RemoveObservers (unsigned long event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
void RemoveObservers (const char *event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
vtkTypeBool HasObserver (unsigned long event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
vtkTypeBool HasObserver (const char *event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
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. More...
 
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. More...
 
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. More...
 
vtkTypeBool InvokeEvent (unsigned long event, void *callData)
 This method invokes an event and return whether the event was aborted or not. More...
 
vtkTypeBool InvokeEvent (const char *event, void *callData)
 This method invokes an event and return whether the event was aborted or not. More...
 
virtual void SetObjectName (const std::string &objectName)
 Set/get the name of this object for reporting purposes. More...
 
virtual std::string GetObjectName () const
 Set/get the name of this object for reporting purposes. More...
 
- Public Member Functions inherited from vtkObjectBase
const char * GetClassName () const
 Return the class name as a string. More...
 
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). More...
 
virtual void Delete ()
 Delete a VTK object. More...
 
virtual void FastDelete ()
 Delete a reference to this object. More...
 
void InitializeObjectBase ()
 
void Print (ostream &os)
 Print an object to an ostream. More...
 
void Register (vtkObjectBase *o)
 Increase the reference count (mark as used by another object). More...
 
virtual void UnRegister (vtkObjectBase *o)
 Decrease the reference count (release by another object). More...
 
int GetReferenceCount ()
 Return the current reference count of this object. More...
 
void SetReferenceCount (int)
 Sets the reference count. More...
 
bool GetIsInMemkind () const
 A local state flag that remembers whether this object lives in the normal or extended memory space. More...
 
virtual void PrintHeader (ostream &os, vtkIndent indent)
 Methods invoked by print to print information about the object including superclasses. More...
 
virtual void PrintTrailer (ostream &os, vtkIndent indent)
 Methods invoked by print to print information about the object including superclasses. More...
 

Static Public Member Functions

static vtkLabelHierarchyNew ()
 
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkLabelHierarchySafeDownCast (vtkObjectBase *o)
 
static bool GetPathForNodalCoordinates (int *path, int ijk[3], int level)
 Given a level of the tree and ijk coordinates in a lattice, compute a path down the tree to reach the corresponding lattice node. More...
 
static void GetAnchorFrustumPlanes (double frustumPlanes[24], vtkRenderer *ren, vtkCoordinate *anchorTransform)
 Compute frustum for quickly excluding labels from rendering that are outside the visible region. More...
 
- Static Public Member Functions inherited from vtkPointSet
static vtkPointSetNew ()
 Standard instantiation method. More...
 
static vtkPointSetExtendedNew ()
 
static vtkPointSetGetData (vtkInformation *info)
 Retrieve an instance of this class from an information object. More...
 
static vtkPointSetGetData (vtkInformationVector *v, int i=0)
 Retrieve an instance of this class from an information object. More...
 
static vtkTypeBool IsTypeOf (const char *type)
 Standard methods for type information and printing. More...
 
static vtkPointSetSafeDownCast (vtkObjectBase *o)
 Standard methods for type information and printing. More...
 
- Static Public Member Functions inherited from vtkDataSet
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkDataSetSafeDownCast (vtkObjectBase *o)
 
static vtkDataSetGetData (vtkInformation *info)
 Retrieve an instance of this class from an information object. More...
 
static vtkDataSetGetData (vtkInformationVector *v, int i=0)
 Retrieve an instance of this class from an information object. More...
 
- Static Public Member Functions inherited from vtkDataObject
static vtkDataObjectNew ()
 
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkDataObjectSafeDownCast (vtkObjectBase *o)
 
static vtkInformationGetActiveFieldInformation (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) More...
 
static vtkInformationGetNamedFieldInformation (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. More...
 
static void RemoveNamedFieldInformation (vtkInformation *info, int fieldAssociation, const char *name)
 Remove the info associated with an array. More...
 
static vtkInformationSetActiveAttribute (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). More...
 
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). More...
 
static void SetPointDataActiveScalarInfo (vtkInformation *info, int arrayType, int numComponents)
 Convenience version of previous method for use (primarily) by the Imaging filters. More...
 
static const char * GetAssociationTypeAsString (int associationType)
 Given an integer association type, this static method returns a string type for the attribute (i.e. More...
 
static int GetAssociationTypeFromString (const char *associationName)
 Given a string association name, this static method returns an integer association type for the attribute (i.e. More...
 
static vtkInformationStringKeyDATA_TYPE_NAME ()
 
static vtkInformationDataObjectKeyDATA_OBJECT ()
 
static vtkInformationIntegerKeyDATA_EXTENT_TYPE ()
 
static vtkInformationIntegerPointerKeyDATA_EXTENT ()
 
static vtkInformationIntegerVectorKeyALL_PIECES_EXTENT ()
 
static vtkInformationIntegerKeyDATA_PIECE_NUMBER ()
 
static vtkInformationIntegerKeyDATA_NUMBER_OF_PIECES ()
 
static vtkInformationIntegerKeyDATA_NUMBER_OF_GHOST_LEVELS ()
 
static vtkInformationDoubleKeyDATA_TIME_STEP ()
 
static vtkInformationInformationVectorKeyPOINT_DATA_VECTOR ()
 
static vtkInformationInformationVectorKeyCELL_DATA_VECTOR ()
 
static vtkInformationInformationVectorKeyVERTEX_DATA_VECTOR ()
 
static vtkInformationInformationVectorKeyEDGE_DATA_VECTOR ()
 
static vtkInformationIntegerKeyFIELD_ARRAY_TYPE ()
 
static vtkInformationIntegerKeyFIELD_ASSOCIATION ()
 
static vtkInformationIntegerKeyFIELD_ATTRIBUTE_TYPE ()
 
static vtkInformationIntegerKeyFIELD_ACTIVE_ATTRIBUTE ()
 
static vtkInformationIntegerKeyFIELD_NUMBER_OF_COMPONENTS ()
 
static vtkInformationIntegerKeyFIELD_NUMBER_OF_TUPLES ()
 
static vtkInformationIntegerKeyFIELD_OPERATION ()
 
static vtkInformationDoubleVectorKeyFIELD_RANGE ()
 
static vtkInformationIntegerVectorKeyPIECE_EXTENT ()
 
static vtkInformationStringKeyFIELD_NAME ()
 
static vtkInformationDoubleVectorKeyORIGIN ()
 
static vtkInformationDoubleVectorKeySPACING ()
 
static vtkInformationDoubleVectorKeyDIRECTION ()
 
static vtkInformationDoubleVectorKeyBOUNDING_BOX ()
 
static vtkInformationDataObjectKeySIL ()
 
static vtkDataObjectGetData (vtkInformation *info)
 Retrieve an instance of this class from an information object. More...
 
static vtkDataObjectGetData (vtkInformationVector *v, int i=0)
 Retrieve an instance of this class from an information object. More...
 
static void SetGlobalReleaseDataFlag (vtkTypeBool val)
 Turn on/off flag to control whether every object releases its data after being used by a filter. More...
 
static vtkTypeBool GetGlobalReleaseDataFlag ()
 Turn on/off flag to control whether every object releases its data after being used by a filter. More...
 
- Static Public Member Functions inherited from vtkObject
static vtkObjectNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 
static void BreakOnError ()
 This method is called when vtkErrorMacro executes. More...
 
static void SetGlobalWarningDisplay (vtkTypeBool val)
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static void GlobalWarningDisplayOn ()
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static void GlobalWarningDisplayOff ()
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static vtkTypeBool GetGlobalWarningDisplay ()
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
- 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. More...
 
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). More...
 
static vtkObjectBaseNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 
static void SetMemkindDirectory (const char *directoryname)
 The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. More...
 
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. More...
 

Protected Member Functions

virtual vtkObjectBaseNewInstanceInternal () const
 Standard methods for type information and printing. More...
 
 vtkLabelHierarchy ()
 
 ~vtkLabelHierarchy () override
 
- Protected Member Functions inherited from vtkPointSet
 vtkPointSet ()
 
 ~vtkPointSet () override
 
void ReportReferences (vtkGarbageCollector *) override
 
- Protected Member Functions inherited from vtkDataSet
 vtkDataSet ()
 
 ~vtkDataSet () override
 
vtkMTimeType GetGhostCellsTime ()
 Return the MTime of the ghost cells array. More...
 
virtual void ComputeScalarRange ()
 Compute the range of the scalars and cache it into ScalarRange only if the cache became invalid (ScalarRangeComputeTime). More...
 
- Protected Member Functions inherited from vtkDataObject
 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. More...
 
void InternalReleaseFocus ()
 These methods allow a command to exclusively grab all events. More...
 
- Protected Member Functions inherited from vtkObjectBase
 vtkObjectBase ()
 
virtual ~vtkObjectBase ()
 
 vtkObjectBase (const vtkObjectBase &)
 
void operator= (const vtkObjectBase &)
 

Protected Attributes

int TargetLabelCount
 
int MaximumDepth
 
vtkDataArrayPriorities
 
vtkAbstractArrayLabels
 
vtkDataArrayOrientations
 
vtkIntArrayIconIndices
 
vtkDataArraySizes
 
vtkDataArrayBoundedSizes
 
vtkCoincidentPointsCoincidentPoints
 
vtkPointsCenterPts
 
vtkTextPropertyTextProperty
 
ImplementationImpl
 
- Protected Attributes inherited from vtkPointSet
bool Editable
 
vtkPointsPoints
 
vtkAbstractPointLocatorPointLocator
 
vtkAbstractCellLocatorCellLocator
 
- Protected Attributes inherited from vtkDataSet
vtkNew< vtkGenericCellGenericCell
 
vtkCellDataCellData
 
vtkPointDataPointData
 
vtkCallbackCommandDataObserver
 
vtkTimeStamp ComputeTime
 
double Bounds [6]
 
double Center [3]
 
double ScalarRange [2]
 
vtkTimeStamp ScalarRangeComputeTime
 
vtkUnsignedCharArrayPointGhostArray
 These arrays pointers are caches used to avoid a string comparison (when getting ghost arrays using GetArray(name)) More...
 
vtkUnsignedCharArrayCellGhostArray
 These arrays pointers are caches used to avoid a string comparison (when getting ghost arrays using GetArray(name)) More...
 
bool PointGhostArrayCached
 These arrays pointers are caches used to avoid a string comparison (when getting ghost arrays using GetArray(name)) More...
 
bool CellGhostArrayCached
 These arrays pointers are caches used to avoid a string comparison (when getting ghost arrays using GetArray(name)) More...
 
- Protected Attributes inherited from vtkDataObject
vtkFieldDataFieldData
 
vtkTypeBool DataReleased
 
vtkTimeStamp UpdateTime
 
vtkInformationInformation
 
- 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
 

Friends

class vtkLabelHierarchyFrustumIterator
 
class vtkLabelHierarchyFullSortIterator
 
class implementation
 

Additional Inherited Members

- Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction GetCurrentMallocFunction ()
 
static vtkReallocingFunction GetCurrentReallocFunction ()
 
static vtkFreeingFunction GetCurrentFreeFunction ()
 
static vtkFreeingFunction GetAlternateFreeFunction ()
 

Detailed Description

contains an octree of labels

This class represents labels in a hierarchy used to denote rendering priority. A binary tree of labels is maintained that subdivides the bounds of the of the label anchors spatially. Which level of the tree a label occupies determines its priority; those at higher levels of the tree will be more likely to render than those at lower levels of the tree.

Pass vtkLabelHierarchy objects to a vtkLabelPlacementMapper filter for dynamic, non-overlapping, per-frame placement of labels.

Note that if we have a d-dimensional binary tree and we want a fixed number \(n\) of labels in each node (all nodes, not just leaves), we can compute the depth of tree required assuming a uniform distribution of points. Given a total of \(N\) points we know that \(\frac{N}{|T|} = n\), where \(|T|\) is the cardinality of the tree (i.e., the number of nodes it contains). Because we have a uniform distribution, the tree will be uniformly subdivided and thus \(|T| = 1 + 2^d + \left(2^d\right)^2 + \cdots + \left(2^d\right)^k\), where \(d\) is the dimensionality of the input points (fixed at 3 for now). As \(k\) becomes large, \(|T|\approx 2 \left(2^d\right)^k\). Using this approximation, we can solve for \(k\):

\[ k = \frac{\log{\frac{N}{2n}}}{\log{2^d}} \]

Given a set of \(N\) input label anchors, we'll compute \(k\) and then bin the anchors into tree nodes at level \(k\) of the tree. After this, all the nodes will be in the leaves of the tree and those leaves will be at the \(k\)-th level; no anchors will be in levels \(1, 2, \ldots, k-1\). To fix that, we'll choose to move some anchors upwards. The exact number to move upwards depends on TargetLabelCount. We'll move as many up as required to have TargetLabelCount at each node.

You should avoid situations where MaximumDepth does not allow for TargetLabelCount or fewer entries at each node. The MaximumDepth is a hard limit while TargetLabelCount is a suggested optimum. You will end up with many more than TargetLabelCount entries per node and things will be sloooow.

Tests:
vtkLabelHierarchy (Tests)

Definition at line 67 of file vtkLabelHierarchy.h.

Member Typedef Documentation

◆ Superclass

Definition at line 71 of file vtkLabelHierarchy.h.

Member Enumeration Documentation

◆ IteratorType

Enumeration of iterator types.

Enumerator
FULL_SORT 
QUEUE 
DEPTH_FIRST 
FRUSTUM 

Definition at line 104 of file vtkLabelHierarchy.h.

Constructor & Destructor Documentation

◆ vtkLabelHierarchy()

vtkLabelHierarchy::vtkLabelHierarchy ( )
protected

◆ ~vtkLabelHierarchy()

vtkLabelHierarchy::~vtkLabelHierarchy ( )
overrideprotected

Member Function Documentation

◆ New()

static vtkLabelHierarchy* vtkLabelHierarchy::New ( )
static

◆ IsTypeOf()

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

◆ IsA()

virtual vtkTypeBool vtkLabelHierarchy::IsA ( const char *  type)
virtual

Standard methods for type information and printing.

Reimplemented from vtkPointSet.

◆ SafeDownCast()

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

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkLabelHierarchy::NewInstanceInternal ( ) const
protectedvirtual

Standard methods for type information and printing.

Reimplemented from vtkPointSet.

◆ NewInstance()

vtkLabelHierarchy* vtkLabelHierarchy::NewInstance ( ) const

◆ PrintSelf()

void vtkLabelHierarchy::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
overridevirtual

Standard methods for type information and printing.

Reimplemented from vtkPointSet.

◆ SetPoints()

void vtkLabelHierarchy::SetPoints ( vtkPoints )
overridevirtual

Override SetPoints so we can reset the hierarchy when the points change.

Reimplemented from vtkPointSet.

◆ ComputeHierarchy()

virtual void vtkLabelHierarchy::ComputeHierarchy ( )
virtual

Fill the hierarchy with the input labels.

◆ SetTargetLabelCount()

virtual void vtkLabelHierarchy::SetTargetLabelCount ( int  )
virtual

The number of labels that is ideally present at any octree node.

It is best if this is a multiple of \(2^d\).

◆ GetTargetLabelCount()

virtual int vtkLabelHierarchy::GetTargetLabelCount ( )
virtual

The number of labels that is ideally present at any octree node.

It is best if this is a multiple of \(2^d\).

◆ SetMaximumDepth()

virtual void vtkLabelHierarchy::SetMaximumDepth ( int  )
virtual

The maximum depth of the octree.

◆ GetMaximumDepth()

virtual int vtkLabelHierarchy::GetMaximumDepth ( )
virtual

The maximum depth of the octree.

◆ SetTextProperty()

virtual void vtkLabelHierarchy::SetTextProperty ( vtkTextProperty tprop)
virtual

The default text property assigned to labels in this hierarchy.

◆ GetTextProperty()

virtual vtkTextProperty* vtkLabelHierarchy::GetTextProperty ( )
virtual

The default text property assigned to labels in this hierarchy.

◆ SetPriorities()

virtual void vtkLabelHierarchy::SetPriorities ( vtkDataArray arr)
virtual

Set/get the array specifying the importance (priority) of each label.

◆ GetPriorities()

virtual vtkDataArray* vtkLabelHierarchy::GetPriorities ( )
virtual

Set/get the array specifying the importance (priority) of each label.

◆ SetLabels()

virtual void vtkLabelHierarchy::SetLabels ( vtkAbstractArray arr)
virtual

Set/get the array specifying the text of each label.

◆ GetLabels()

virtual vtkAbstractArray* vtkLabelHierarchy::GetLabels ( )
virtual

Set/get the array specifying the text of each label.

◆ SetOrientations()

virtual void vtkLabelHierarchy::SetOrientations ( vtkDataArray arr)
virtual

Set/get the array specifying the orientation of each label.

◆ GetOrientations()

virtual vtkDataArray* vtkLabelHierarchy::GetOrientations ( )
virtual

Set/get the array specifying the orientation of each label.

◆ SetIconIndices()

virtual void vtkLabelHierarchy::SetIconIndices ( vtkIntArray arr)
virtual

Set/get the array specifying the icon index of each label.

◆ GetIconIndices()

virtual vtkIntArray* vtkLabelHierarchy::GetIconIndices ( )
virtual

Set/get the array specifying the icon index of each label.

◆ SetSizes()

virtual void vtkLabelHierarchy::SetSizes ( vtkDataArray arr)
virtual

Set/get the array specifying the size of each label.

◆ GetSizes()

virtual vtkDataArray* vtkLabelHierarchy::GetSizes ( )
virtual

Set/get the array specifying the size of each label.

◆ SetBoundedSizes()

virtual void vtkLabelHierarchy::SetBoundedSizes ( vtkDataArray arr)
virtual

Set/get the array specifying the maximum width and height in world coordinates of each label.

◆ GetBoundedSizes()

virtual vtkDataArray* vtkLabelHierarchy::GetBoundedSizes ( )
virtual

Set/get the array specifying the maximum width and height in world coordinates of each label.

◆ NewIterator()

vtkLabelHierarchyIterator* vtkLabelHierarchy::NewIterator ( int  type,
vtkRenderer ren,
vtkCamera cam,
double  frustumPlanes[24],
bool  positionsAsNormals,
float  bucketSize[2] 
)

Returns an iterator for this data object.

positionsAsNormals should only be true when labels are on a sphere centered at the origin (3D world).

Parameters
type- the type should be one of FULL_SORT, QUEUE, DEPTH_FIRST, or FRUSTUM.
ren- the current renderer (used for viewport information)
cam- the current camera.
frustumPlanes- should be the output of the camera's frustum planes.
positionsAsNormals- throws out octree nodes on the opposite side of the origin.
bucketSize- an array of 2 integers describing the width and height of label placer buckets.

◆ GetDiscreteNodeCoordinatesFromWorldPoint()

void vtkLabelHierarchy::GetDiscreteNodeCoordinatesFromWorldPoint ( int  ijk[3],
double  pt[3],
int  level 
)

Given a depth in the hierarchy (level) and a point pt in world space, compute ijk.

This is used to find other octree nodes at the same level that are within the search radius for candidate labels to be placed. It is called with pt set to the camera eye point and pythagorean quadruples increasingly distant from the origin are added to ijk to identify octree nodes whose labels should be placed.

Parameters
[out]ijk- discrete coordinates of the octree node at level containing pt.
[in]pt- input world point coordinates
[in]level- input octree level to be considered

◆ GetPathForNodalCoordinates()

static bool vtkLabelHierarchy::GetPathForNodalCoordinates ( int *  path,
int  ijk[3],
int  level 
)
static

Given a level of the tree and ijk coordinates in a lattice, compute a path down the tree to reach the corresponding lattice node.

If the lattice coordinates are outside the tree, this returns false. Otherwise it returns true. This does not guarantee that the path exists in the hierarchy.

Parameters
[out]path- a vector of level integers specifying which child to descend at each level to reach ijk
[in]ijk- discrete coordinates of the octree node at level
[in]level- input octree level to be considered

◆ GetNumberOfCells()

vtkIdType vtkLabelHierarchy::GetNumberOfCells ( )
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ GetCell() [1/5]

vtkCell* vtkLabelHierarchy::GetCell ( vtkIdType  )
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ GetCell() [2/5]

void vtkLabelHierarchy::GetCell ( vtkIdType  ,
vtkGenericCell  
)
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ GetCellType()

int vtkLabelHierarchy::GetCellType ( vtkIdType  )
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ GetCellPoints()

void vtkLabelHierarchy::GetCellPoints ( vtkIdType  ,
vtkIdList  
)
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ GetPointCells()

void vtkLabelHierarchy::GetPointCells ( vtkIdType  ,
vtkIdList  
)
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ FindCell() [1/2]

vtkIdType vtkLabelHierarchy::FindCell ( double *  ,
vtkCell ,
vtkIdType  ,
double  ,
int &  ,
double *  ,
double *   
)
override

Inherited members (from vtkDataSet)

◆ FindCell() [2/2]

vtkIdType vtkLabelHierarchy::FindCell ( double *  ,
vtkCell ,
vtkGenericCell ,
vtkIdType  ,
double  ,
int &  ,
double *  ,
double *   
)
override

Inherited members (from vtkDataSet)

◆ GetMaxCellSize()

int vtkLabelHierarchy::GetMaxCellSize ( )
overridevirtual

Inherited members (from vtkDataSet)

Reimplemented from vtkPointSet.

◆ GetImplementation()

Implementation* vtkLabelHierarchy::GetImplementation ( )
inline

Definition at line 226 of file vtkLabelHierarchy.h.

◆ GetCenterPts()

virtual vtkPoints* vtkLabelHierarchy::GetCenterPts ( )
virtual

Provide access to original coordinates of sets of coincident points.

◆ GetCoincidentPoints()

virtual vtkCoincidentPoints* vtkLabelHierarchy::GetCoincidentPoints ( )
virtual

Provide access to the set of coincident points that have been perturbed by the hierarchy in order to render labels for each without overlap.

◆ GetAnchorFrustumPlanes()

static void vtkLabelHierarchy::GetAnchorFrustumPlanes ( double  frustumPlanes[24],
vtkRenderer ren,
vtkCoordinate anchorTransform 
)
static

Compute frustum for quickly excluding labels from rendering that are outside the visible region.

This is a shared utility function.

◆ GetCell() [3/5]

virtual vtkCell* vtkDataSet::GetCell

Get cell with cellId such that: 0 <= cellId < NumberOfCells.

The returned vtkCell is an object owned by this instance, hence the return value must not be deleted by the caller.

Warning
Repeat calls to this function for different face ids will change the data stored in the internal member object whose pointer is returned by this function.
THIS METHOD IS NOT THREAD SAFE. For a thread-safe version, please use void GetCell(vtkIdType cellId, vtkGenericCell* cell).

◆ GetCell() [4/5]

virtual vtkCell* vtkDataSet::GetCell
inline

Inherited members (from vtkDataSet)

Definition at line 238 of file vtkDataSet.h.

◆ GetCell() [5/5]

virtual void vtkDataSet::GetCell

Get cell with cellId such that: 0 <= cellId < NumberOfCells.

This is a thread-safe alternative to the previous GetCell() method. THIS METHOD IS THREAD SAFE IF FIRST CALLED FROM A SINGLE THREAD AND THE DATASET IS NOT MODIFIED

Friends And Related Function Documentation

◆ vtkLabelHierarchyFrustumIterator

friend class vtkLabelHierarchyFrustumIterator
friend

Definition at line 272 of file vtkLabelHierarchy.h.

◆ vtkLabelHierarchyFullSortIterator

friend class vtkLabelHierarchyFullSortIterator
friend

Definition at line 273 of file vtkLabelHierarchy.h.

◆ implementation

friend class implementation
friend

Definition at line 274 of file vtkLabelHierarchy.h.

Member Data Documentation

◆ TargetLabelCount

int vtkLabelHierarchy::TargetLabelCount
protected

Definition at line 258 of file vtkLabelHierarchy.h.

◆ MaximumDepth

int vtkLabelHierarchy::MaximumDepth
protected

Definition at line 259 of file vtkLabelHierarchy.h.

◆ Priorities

vtkDataArray* vtkLabelHierarchy::Priorities
protected

Definition at line 260 of file vtkLabelHierarchy.h.

◆ Labels

vtkAbstractArray* vtkLabelHierarchy::Labels
protected

Definition at line 261 of file vtkLabelHierarchy.h.

◆ Orientations

vtkDataArray* vtkLabelHierarchy::Orientations
protected

Definition at line 262 of file vtkLabelHierarchy.h.

◆ IconIndices

vtkIntArray* vtkLabelHierarchy::IconIndices
protected

Definition at line 263 of file vtkLabelHierarchy.h.

◆ Sizes

vtkDataArray* vtkLabelHierarchy::Sizes
protected

Definition at line 264 of file vtkLabelHierarchy.h.

◆ BoundedSizes

vtkDataArray* vtkLabelHierarchy::BoundedSizes
protected

Definition at line 265 of file vtkLabelHierarchy.h.

◆ CoincidentPoints

vtkCoincidentPoints* vtkLabelHierarchy::CoincidentPoints
protected

Definition at line 266 of file vtkLabelHierarchy.h.

◆ CenterPts

vtkPoints* vtkLabelHierarchy::CenterPts
protected

Definition at line 267 of file vtkLabelHierarchy.h.

◆ TextProperty

vtkTextProperty* vtkLabelHierarchy::TextProperty
protected

Definition at line 268 of file vtkLabelHierarchy.h.

◆ Impl

Implementation* vtkLabelHierarchy::Impl
protected

Definition at line 270 of file vtkLabelHierarchy.h.


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