vtkVoronoiFlower2D Class Reference

create 2D Voronoi convex tiling of input points More...

#include <vtkVoronoiFlower2D.h>

Inheritance diagram for vtkVoronoiFlower2D:

Collaboration diagram for vtkVoronoiFlower2D:

Public Types
enum	OutputTypeOptions { VORONOI = 0 , DELAUNAY = 1 , VORONOI_AND_DELAUNAY = 2 , SPEED_TEST = 3 }
	Used to control filter output. More...
enum	GenerateCellScalarsStrategy {   NO_CELL_SCALARS = 0 , POINT_IDS = 1 , REGION_IDS = 2 , NUMBER_SIDES = 3 ,   PRIM_IDS = 4 , THREAD_IDS , RANDOM = 6 }
	Specify how to generate cell scalars for the outputs. More...
enum	ProjectionPlaneStrategy { XY_PLANE = 0 , SPECIFIED_TRANSFORM_PLANE = 1 , BEST_FITTING_PLANE = 2 }
Public Types inherited from vtkPolyDataAlgorithm
typedef vtkAlgorithm	Superclass
Public Types inherited from vtkAlgorithm
enum	DesiredOutputPrecision { SINGLE_PRECISION , DOUBLE_PRECISION , DEFAULT_PRECISION }
	Values used for setting the desired output precision for various algorithms. More...
typedef vtkObject	Superclass

Public Member Functions
int	GetNumberOfThreads ()
	Return the number of threads actually used during execution.
vtkMTimeType	GetMTime () override
	Get the MTime of this object also considering the locator.
template<typename T>
void	UpdateExecutionInformation (T *voro)
	Method used to update this filter's execution parameters after the internal, templated instance of vtkVoronoiCore2D completes execution.
virtual void	SetOutputType (int)
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
virtual int	GetOutputType ()
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
void	SetOutputTypeToVoronoi ()
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
void	SetOutputTypeToDelaunay ()
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
void	SetOutputTypeToVoronoiAndDelaunay ()
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
void	SetOutputTypeToSpeedTest ()
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
virtual void	SetPadding (double)
	Specify a padding for the bounding box of the points.
virtual double	GetPadding ()
	Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.
virtual void	SetPassPointData (vtkTypeBool)
	Indicate whether to pass input point data through to the filter outputs.
virtual vtkTypeBool	GetPassPointData ()
	Indicate whether to pass input point data through to the filter outputs.
virtual void	PassPointDataOn ()
	Indicate whether to pass input point data through to the filter outputs.
virtual void	PassPointDataOff ()
	Indicate whether to pass input point data through to the filter outputs.
virtual void	SetGenerateCellScalars (int)
	Indicate whether to create a cell scalar array as part of the output.
virtual int	GetGenerateCellScalars ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToNone ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToPointIds ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToRegionIds ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToNumberOfSides ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToPrimIds ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToThreadIds ()
	Indicate whether to create a cell scalar array as part of the output.
void	SetGenerateCellScalarsToRandom ()
	Indicate whether to create a cell scalar array as part of the output.
virtual vtkTypeBool	GetMergePoints ()
	Specify whether to merge (nearly) concident points in order to produce compatible output meshes.
virtual void	SetMergePoints (vtkTypeBool)
	Specify whether to merge (nearly) concident points in order to produce compatible output meshes.
virtual void	MergePointsOn ()
	Specify whether to merge (nearly) concident points in order to produce compatible output meshes.
virtual void	MergePointsOff ()
	Specify whether to merge (nearly) concident points in order to produce compatible output meshes.
vtkIdType	FindTile (double x[3])
	The following methods - FindTile() and GetTileData() - can be used to locate/query the tile containing a point x (i.e., given that a Voronoi tile Vi is a region of closest proximity to the generating point x).
void	GetTileData (vtkIdType tileId, vtkPolyData *tileData)
	The following methods - FindTile() and GetTileData() - can be used to locate/query the tile containing a point x (i.e., given that a Voronoi tile Vi is a region of closest proximity to the generating point x).
virtual void	SetPruneTolerance (double)
	If PruneSpokes is enabled, specify a relative tolerance to determine which spokes to prune.
virtual double	GetPruneTolerance ()
	If PruneSpokes is enabled, specify a relative tolerance to determine which spokes to prune.
virtual void	SetValidate (vtkTypeBool)
	Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).
virtual vtkTypeBool	GetValidate ()
	Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).
virtual void	ValidateOn ()
	Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).
virtual void	ValidateOff ()
	Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).
virtual void	SetTransform (vtkAbstractTransform *)
	Set / get the transform which is applied to points to generate a 2D problem.
virtual vtkAbstractTransform *	GetTransform ()
	Set / get the transform which is applied to points to generate a 2D problem.
virtual void	SetProjectionPlaneMode (int)
	Define the method to project the input 3D points into a 2D plane for tessellation.
virtual int	GetProjectionPlaneMode ()
	Define the method to project the input 3D points into a 2D plane for tessellation.
void	SetProjectionPlaneModeToXYPlane ()
	Define the method to project the input 3D points into a 2D plane for tessellation.
void	SetProjectionPlaneModeToSpecifiedTransformPlane ()
	Define the method to project the input 3D points into a 2D plane for tessellation.
void	SetProjectionPlaneModeToBestFittingPlane ()
	Define the method to project the input 3D points into a 2D plane for tessellation.
virtual void	SetPointOfInterest (vtkIdType)
	These methods are for debugging or instructional purposes.
virtual vtkIdType	GetPointOfInterest ()
	These methods are for debugging or instructional purposes.
virtual void	SetPointsOfInterest (vtkIdTypeArray *)
	These methods are for debugging or instructional purposes.
virtual vtkIdTypeArray *	GetPointsOfInterest ()
	These methods are for debugging or instructional purposes.
virtual void	SetMaximumNumberOfTileClips (vtkIdType)
	These methods are for debugging or instructional purposes.
virtual vtkIdType	GetMaximumNumberOfTileClips ()
	These methods are for debugging or instructional purposes.
vtkStaticPointLocator2D *	GetLocator ()
	Retrieve the internal locator to manually configure it, for example specifying the number of points per bucket.
virtual void	SetGenerateVoronoiFlower (vtkTypeBool)
	These methods are for debugging or instructional purposes.
virtual vtkTypeBool	GetGenerateVoronoiFlower ()
	These methods are for debugging or instructional purposes.
virtual void	GenerateVoronoiFlowerOn ()
	These methods are for debugging or instructional purposes.
virtual void	GenerateVoronoiFlowerOff ()
	These methods are for debugging or instructional purposes.
virtual vtkSpheres *	GetSpheres ()
	Return the Voronoi flower (a collection of spheres) for the point of interest in the form of a vtkSpheres implicit function.
virtual void	SetBatchSize (unsigned int)
	Specify the number of input generating points in a batch, where a batch defines a contiguous subset of the input points operated on during threaded execution.
virtual unsigned int	GetBatchSize ()
	Specify the number of input generating points in a batch, where a batch defines a contiguous subset of the input points operated on during threaded execution.
int	GetMaximumNumberOfPoints ()
	Return the maximum number of sides across all Voronoi tiles.
int	GetMaximumNumberOfSides ()
	Return the maximum number of sides across all Voronoi tiles.
int	GetMaximumNumberOfEdges ()
	Return the maximum number of sides across all Voronoi tiles.
Public Member Functions inherited from vtkPolyDataAlgorithm
vtkPolyDataAlgorithm *	NewInstance () const
vtkTypeBool	ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	see vtkAlgorithm for details
vtkDataObject *	GetInput ()
vtkDataObject *	GetInput (int port)
vtkPolyData *	GetPolyDataInput (int port)
vtkPolyData *	GetOutput ()
	Get the output data object for a port on this algorithm.
vtkPolyData *	GetOutput (int)
	Get the output data object for a port on this algorithm.
virtual void	SetOutput (vtkDataObject *d)
	Get the output data object for a port on this algorithm.
void	SetInputData (vtkDataObject *)
	Assign a data object as input.
void	SetInputData (int, vtkDataObject *)
	Assign a data object as input.
void	AddInputData (vtkDataObject *)
	Assign a data object as input.
void	AddInputData (int, vtkDataObject *)
	Assign a data object as input.
Public Member Functions inherited from vtkAlgorithm
vtkAlgorithm *	NewInstance () const
vtkTypeBool	HasExecutive ()
	Check whether this algorithm has an assigned executive.
vtkExecutive *	GetExecutive ()
	Get this algorithm's executive.
virtual void	SetExecutive (vtkExecutive *executive)
	Set this algorithm's executive.
vtkTypeBool	ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
	Version of ProcessRequest() that is wrapped.
virtual int	ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, vtkMTimeType *mtime)
	A special version of ProcessRequest meant specifically for the pipeline modified time request.
virtual int	ModifyRequest (vtkInformation *request, int when)
	This method gives the algorithm a chance to modify the contents of a request before or after (specified in the when argument) it is forwarded.
vtkInformation *	GetInputPortInformation (int port)
	Get the information object associated with an input port.
vtkInformation *	GetOutputPortInformation (int port)
	Get the information object associated with an output port.
int	GetNumberOfInputPorts ()
	Get the number of input ports used by the algorithm.
int	GetNumberOfOutputPorts ()
	Get the number of output ports provided by the algorithm.
void	SetAbortExecuteAndUpdateTime ()
	Set AbortExecute Flag and update LastAbortTime.
void	UpdateProgress (double amount)
	Update the progress of the process object.
bool	CheckAbort ()
	Checks to see if this filter should abort.
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
	Set the input data arrays that this algorithm will process.
int	GetNumberOfInputArraySpecifications ()
	Get the number of input array indices that have already been set.
bool	ResetInputArraySpecifications ()
	Clear all existing input array specifications (as if SetInputArrayToProcess had never been called).
vtkInformation *	GetInputArrayInformation (int idx)
	Get the info object for the specified input array to this algorithm.
void	RemoveAllInputs ()
	Remove all the input data.
vtkDataObject *	GetOutputDataObject (int port)
	Get the data object that will contain the algorithm output for the given port.
vtkDataObject *	GetInputDataObject (int port, int connection)
	Get the data object that will contain the algorithm input for the given port and given connection.
virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
	Remove a connection from the given input port index.
virtual void	RemoveInputConnection (int port, int idx)
	Remove a connection given by index idx.
virtual void	RemoveAllInputConnections (int port)
	Removes all input connections.
virtual void	SetInputDataObject (int port, vtkDataObject *data)
	Sets the data-object as an input on the given port index.
virtual void	SetInputDataObject (vtkDataObject *data)
virtual void	AddInputDataObject (int port, vtkDataObject *data)
	Add the data-object as an input to this given port.
virtual void	AddInputDataObject (vtkDataObject *data)
vtkAlgorithmOutput *	GetOutputPort (int index)
	Get a proxy object corresponding to the given output port of this algorithm.
vtkAlgorithmOutput *	GetOutputPort ()
int	GetNumberOfInputConnections (int port)
	Get the number of inputs currently connected to a port.
int	GetTotalNumberOfInputConnections ()
	Get the total number of inputs for this algorithm.
vtkAlgorithmOutput *	GetInputConnection (int port, int index)
	Get the algorithm output port connected to an input port.
vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)
	Returns the algorithm and the output port index of that algorithm connected to a port-index pair.
vtkAlgorithm *	GetInputAlgorithm (int port, int index)
	Returns the algorithm connected to a port-index pair.
vtkAlgorithm *	GetInputAlgorithm ()
	Equivalent to GetInputAlgorithm(0, 0).
vtkExecutive *	GetInputExecutive (int port, int index)
	Returns the executive associated with a particular input connection.
vtkExecutive *	GetInputExecutive ()
	Equivalent to GetInputExecutive(0, 0)
vtkInformation *	GetInputInformation (int port, int index)
	Return the information object that is associated with a particular input connection.
vtkInformation *	GetInputInformation ()
	Equivalent to GetInputInformation(0, 0)
vtkInformation *	GetOutputInformation (int port)
	Return the information object that is associated with a particular output port.
virtual vtkTypeBool	Update (int port, vtkInformationVector *requests)
	This method enables the passing of data requests to the algorithm to be used during execution (in addition to bringing a particular port up-to-date).
virtual vtkTypeBool	Update (vtkInformation *requests)
	Convenience method to update an algorithm after passing requests to its first output port.
virtual int	UpdatePiece (int piece, int numPieces, int ghostLevels, const int extents[6]=nullptr)
	Convenience method to update an algorithm after passing requests to its first output port.
virtual int	UpdateExtent (const int extents[6])
	Convenience method to update an algorithm after passing requests to its first output port.
virtual int	UpdateTimeStep (double time, int piece=-1, int numPieces=1, int ghostLevels=0, const int extents[6]=nullptr)
	Convenience method to update an algorithm after passing requests to its first output port.
virtual void	UpdateInformation ()
	Bring the algorithm's information up-to-date.
virtual void	UpdateDataObject ()
	Create output object(s).
virtual void	PropagateUpdateExtent ()
	Propagate meta-data upstream.
virtual void	UpdateWholeExtent ()
	Bring this algorithm's outputs up-to-date.
void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
	Convenience routine to convert from a linear ordering of input connections to a port/connection pair.
void	RemoveNoPriorTemporalAccessInformationKey ()
	Removes any information key vtkStreamingDemandDrivenPipeline::NO_PRIOR_TEMPORAL_ACCESS() to all output ports of this vtkAlgorithm.
virtual vtkInformation *	GetInformation ()
	Set/Get the information object associated with this algorithm.
virtual void	SetInformation (vtkInformation *)
	Set/Get the information object associated with this algorithm.
bool	UsesGarbageCollector () const override
	Participate in garbage collection.
virtual void	SetAbortExecute (vtkTypeBool)
	Set/Get the AbortExecute flag for the process object.
virtual vtkTypeBool	GetAbortExecute ()
	Set/Get the AbortExecute flag for the process object.
virtual void	AbortExecuteOn ()
	Set/Get the AbortExecute flag for the process object.
virtual void	AbortExecuteOff ()
	Set/Get the AbortExecute flag for the process object.
virtual double	GetProgress ()
	Get the execution progress of a process object.
void	SetContainerAlgorithm (vtkAlgorithm *containerAlg)
	Set/get a Container algorithm for this algorithm.
vtkAlgorithm *	GetContainerAlgorithm ()
	Set/get a Container algorithm for this algorithm.
virtual void	SetAbortOutput (bool)
	Set/Get an internal variable used to communicate between the algorithm and executive.
virtual bool	GetAbortOutput ()
	Set/Get an internal variable used to communicate between the algorithm and executive.
void	SetProgressShiftScale (double shift, double scale)
	Specify the shift and scale values to use to apply to the progress amount when UpdateProgress is called.
virtual double	GetProgressShift ()
	Specify the shift and scale values to use to apply to the progress amount when UpdateProgress is called.
virtual double	GetProgressScale ()
	Specify the shift and scale values to use to apply to the progress amount when UpdateProgress is called.
void	SetProgressText (const char *ptext)
	Set the current text message associated with the progress state.
virtual char *	GetProgressText ()
	Set the current text message associated with the progress state.
virtual unsigned long	GetErrorCode ()
	The error code contains a possible error that occurred while reading or writing the file.
void	SetInputArrayToProcess (const char *name, int fieldAssociation, int component=vtkArrayComponents::AllComponents)
	Set the input data arrays that this algorithm will process.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
	Set the input data arrays that this algorithm will process.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name, int component)
	This method variant also accepts a component to consider rather than the entire tuple.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
	Set the input data arrays that this algorithm will process.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType, int component)
	This method variant also accepts a component to consider rather than the entire tuple.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
	Set the input data arrays that this algorithm will process.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName, const char *component)
	Set the input data arrays that this algorithm will process.
virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
	Set the connection for the given input port index.
virtual void	SetInputConnection (vtkAlgorithmOutput *input)
	Set the connection for the given input port index.
virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
	Add a connection to the given input port index.
virtual void	AddInputConnection (vtkAlgorithmOutput *input)
	Add a connection to the given input port index.
virtual bool	Update (int port)
	Bring this algorithm's outputs up-to-date.
virtual bool	Update ()
	Bring this algorithm's outputs up-to-date.
virtual void	SetReleaseDataFlag (vtkTypeBool)
	Turn release data flag on or off for all output ports.
virtual vtkTypeBool	GetReleaseDataFlag ()
	Turn release data flag on or off for all output ports.
void	ReleaseDataFlagOn ()
	Turn release data flag on or off for all output ports.
void	ReleaseDataFlagOff ()
	Turn release data flag on or off for all output ports.
int	UpdateExtentIsEmpty (vtkInformation *pinfo, vtkDataObject *output)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0.
int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0.
int *	GetUpdateExtent ()
	These functions return the update extent for output ports that use 3D extents.
int *	GetUpdateExtent (int port)
	These functions return the update extent for output ports that use 3D extents.
void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents.
void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents.
void	GetUpdateExtent (int extent[6])
	These functions return the update extent for output ports that use 3D extents.
void	GetUpdateExtent (int port, int extent[6])
	These functions return the update extent for output ports that use 3D extents.
int	GetUpdatePiece ()
	These functions return the update extent for output ports that use piece extents.
int	GetUpdatePiece (int port)
	These functions return the update extent for output ports that use piece extents.
int	GetUpdateNumberOfPieces ()
	These functions return the update extent for output ports that use piece extents.
int	GetUpdateNumberOfPieces (int port)
	These functions return the update extent for output ports that use piece extents.
int	GetUpdateGhostLevel ()
	These functions return the update extent for output ports that use piece extents.
int	GetUpdateGhostLevel (int port)
	These functions return the update extent for output ports that use piece extents.
void	SetProgressObserver (vtkProgressObserver *)
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly.
virtual vtkProgressObserver *	GetProgressObserver ()
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly.
void	SetNoPriorTemporalAccessInformationKey (int key)
	Set to all output ports of this algorithm the information key vtkStreamingDemandDrivenPipeline::NO_PRIOR_TEMPORAL_ACCESS().
void	SetNoPriorTemporalAccessInformationKey ()
	Set to all output ports of this algorithm the information key vtkStreamingDemandDrivenPipeline::NO_PRIOR_TEMPORAL_ACCESS().
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.
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 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.

Protected Member Functions
	vtkVoronoiFlower2D ()
	~vtkVoronoiFlower2D () override=default
int	RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	This is called by the superclass.
int	FillInputPortInformation (int, vtkInformation *) override
	Fill the input port information objects for this algorithm.
Protected Member Functions inherited from vtkPolyDataAlgorithm
	vtkPolyDataAlgorithm ()
	~vtkPolyDataAlgorithm () override
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
	This is called by the superclass.
virtual int	RequestUpdateTime (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
	This is called by the superclass.
int	FillOutputPortInformation (int port, vtkInformation *info) override
	Fill the output port information objects for this algorithm.
Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()
	~vtkAlgorithm () override
bool	CheckUpstreamAbort ()
	Checks to see if an upstream filter has been aborted.
virtual void	SetNumberOfInputPorts (int n)
	Set the number of input ports used by the algorithm.
virtual void	SetNumberOfOutputPorts (int n)
	Set the number of output ports provided by the algorithm.
int	InputPortIndexInRange (int index, const char *action)
int	OutputPortIndexInRange (int index, const char *action)
int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
	Get the association of the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass.
int	GetInputArrayComponent (int idx)
	Get the component to process of the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass.
vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
	This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector.
virtual vtkExecutive *	CreateDefaultExecutive ()
	Create a default executive.
void	ReportReferences (vtkGarbageCollector *) override
virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
	Replace the Nth connection on the given input port.
virtual void	SetNumberOfInputConnections (int port, int n)
	Set the number of input connections on the given input port.
void	SetInputDataInternal (int port, vtkDataObject *input)
	These methods are used by subclasses to implement methods to set data objects directly as input.
void	AddInputDataInternal (int port, vtkDataObject *input)
int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature.
int	GetInputArrayAssociation (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature.
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass.
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass.
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature.
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature.
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature.
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature.
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass.
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass.
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature.
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature.
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature.
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature.
vtkSmartPointer< vtkAbstractArray >	GetInputArray (int idx, int connection, vtkInformationVector **inputVector, int &association, int requestedComponent=vtkArrayComponents::Requested)
	Get an array from the input at index idx.
vtkSmartPointer< vtkAbstractArray >	GetInputArray (int idx, vtkDataObject *input, int &association, int requestedComponent=vtkArrayComponents::Requested)
	Get an array from the input at index idx.
template<typename ArrayType, typename... Params>
vtkSmartPointer< ArrayType >	GetInputArrayAs (Params &&... params)
	Get an array from the input at index idx.
virtual void	SetErrorCode (unsigned long)
	The error code contains a possible error that occurred while reading or writing the file.
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 ()
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)
enum	GeneratePointScalarsStrategy { NO_POINT_SCALARS = 0 , FLOWER_RADII = 1 }
	Used internally to generate point scalars for the output. More...
virtual int	GetGeneratePointScalars ()
	Used internally to generate point scalars for the output.
typedef vtkPolyDataAlgorithm	Superclass
	Standard methods for instantiation, type information, and printing.
static vtkVoronoiFlower2D *	New ()
	Standard methods for instantiation, type information, and printing.
static vtkTypeBool	IsTypeOf (const char *type)
	Standard methods for instantiation, type information, and printing.
static vtkVoronoiFlower2D *	SafeDownCast (vtkObjectBase *o)
	Standard methods for instantiation, type information, and printing.
virtual vtkTypeBool	IsA (const char *type)
	Standard methods for instantiation, type information, and printing.
vtkVoronoiFlower2D *	NewInstance () const
	Standard methods for instantiation, type information, and printing.
void	PrintSelf (ostream &os, vtkIndent indent) override
	Standard methods for instantiation, type information, and printing.
virtual vtkObjectBase *	NewInstanceInternal () const
	Standard methods for instantiation, type information, and printing.

Additional Inherited Members
Static Public Member Functions inherited from vtkPolyDataAlgorithm
static vtkPolyDataAlgorithm *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkPolyDataAlgorithm *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithm *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)
static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()
	Keys used to specify input port requirements.
static vtkInformationIntegerKey *	INPUT_IS_REPEATABLE ()
static vtkInformationInformationVectorKey *	INPUT_REQUIRED_FIELDS ()
static vtkInformationStringVectorKey *	INPUT_REQUIRED_DATA_TYPE ()
static vtkInformationInformationVectorKey *	INPUT_ARRAYS_TO_PROCESS ()
static vtkInformationIntegerKey *	INPUT_PORT ()
static vtkInformationIntegerKey *	INPUT_CONNECTION ()
static vtkInformationIntegerKey *	CAN_PRODUCE_SUB_EXTENT ()
	This key tells the executive that a particular output port is capable of producing an arbitrary subextent of the whole extent.
static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()
	Key that tells the pipeline that a particular algorithm can or cannot handle piece request.
static vtkInformationIntegerKey *	ABORTED ()
static void	SetDefaultExecutivePrototype (vtkExecutive *proto)
	If the DefaultExecutivePrototype is set, a copy of it is created in CreateDefaultExecutive() using NewInstance().
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.
Public Attributes inherited from vtkAlgorithm
std::atomic< vtkTypeBool >	AbortExecute
Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()
static vtkReallocingFunction	GetCurrentReallocFunction ()
static vtkFreeingFunction	GetCurrentFreeFunction ()
static vtkFreeingFunction	GetAlternateFreeFunction ()
Protected Attributes inherited from vtkAlgorithm
vtkTimeStamp	LastAbortCheckTime
vtkInformation *	Information
double	Progress
char *	ProgressText
vtkProgressObserver *	ProgressObserver
unsigned long	ErrorCode
	The error code contains a possible error that occurred while reading or writing the file.
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
Static Protected Attributes inherited from vtkAlgorithm
static vtkTimeStamp	LastAbortTime
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

create 2D Voronoi convex tiling of input points

vtkVoronoiFlower2D is a filter that constructs a 2D Voronoi tessellation of a set of input points. The points are assumed to lie in a plane. These points may be represented by any dataset of type vtkPointSet and subclasses. The output of the filter is a polygonal dataset. Each output cell is a convex polygon (i.e., a Voronoi tile), although options exist for producing other output types including a 2D Delaunay triangulation.

The 2D Voronoi tessellation is a tiling of space with convex polygons, where each Voronoi tile represents the region nearest to one of the input points (the tile generators). Voronoi tessellations are fundamental constructs in computational geometry (and many other fields), and are the dual of Delaunay triangulations.

The input to this filter is a list of points specified in 3D, even though the tessellation is 2D. Thus the tessellation is constructed in the x-y plane, and the z coordinate is ignored (although carried through to the output). If you desire to tessellate in a different plane, you can use the vtkTransformFilter to transform the points into and out of the x-y plane, or you can specify a transform to vtkVoronoiFlower2D directly. In the latter case, the input points are transformed, the transformed points are tessellated, and the output will use the tessellated topology for the original (non-transformed) points. This avoids transforming the data back as would be required when using the vtkTransformFilter method. Specifying a transform directly also allows any transform to be used: rigid, non-rigid, non-invertible, etc.

This filter is a reference implementation written with simplicity in mind. The filter also provides methods for debugging / instructional purposes. This includes producing a single Voronoi tile under various stages of creation, as well as the Voronoi flower, related to the neighborhood metric for point insertion / half-space clipping.

Publications are in preparation to describe the algorithm. A brief summary is as follows. In parallel, each (generating) input point is associated with an initial Voronoi tile, which is simply the bounding box of the point set. A spatial locator is then used to identify nearby points: each neighbor in turn generates a clipping line positioned halfway between the generating point and neighboring points, and orthogonal to the line connecting them. Clips are readily performed by evaluating the vertices of the convex Voronoi tile as being on either side (inside,outside) of the clip line. If two intersections of the Voronoi tile are found, the portion of the tile "outside" the clip line is discarded, resulting in a new convex, Voronoi tile. As each clip occurs, the Voronoi "Flower" neighborhood metric (the union of Delaunay circumcircles) is compared to the extent of the region containing the neighboring clip points. The clip region (along with the points contained in it) is grown by careful expansion (e.g., outward, annular requests of point neighbors). When the Voronoi Flower is contained within the clip region, the algorithm terminates and the Voronoi tile is output. Once complete, it is possible to construct the Delaunay triangulation from the Voronoi tessellation. Note that topological and geometric information is used to generate a valid triangulation (e.g., merging points and validating topology).

There are up to four outputs to this filter depending on how the filter is configured. The first filter output #0 is the Voronoi tessellation. The second output #1 is the Delaunay triangulation; the third (output #2) and fourth (output #3) outputs are available when the PointOfInterest p is set to a value 0 <= p < (number of input points) and GenerateVoronoiFlower is enabled. The third output is a random sampling of points within the flower; the fourth is the Voronoi tile of interest along with scalar values corresponding to the Voronoi petals radii at each Voronoi tile vertex point.

This filter can be used to tessellate different regions using convex polygons (i.e., Voronoi tiles), or create holes in Voronoi tessellations, using a supplemental input single-component, signed integer, scalar data array (i.e., the region ids array). The size of the region ids array must match the number of input points. In this array, a region id value <0 means the tile associated with its associated point is considered "outside" and so is not produced on output. Otherwise, any non-negative region is indicates which region a particular tile belongs to.

Note that an important concept of this algorithm is a graphical representation referred to as the adjacency graph, represented by the "wheel and spokes" data structure. When the Voronoi tessellation is generated, connections to the edge neighbors of each Voronoi tile are known as spokes. In 2D, the radially ordered (in counterclockwise direction) collection of all spokes associated with a tile is known as a wheel. Then to generate the Delaunay triangulation, a parallel traversal of the wheel and spokes (or adjacency) graph is used to extract triangles from the graph.

There are two common use cases when using this filter. The first case simply produces output for the purposes of visualization. In this case the resulting output meshes are not watertight and cannot be smoothed (a so-called meshless complex of polygons). The second use case produces connected, watertight surface meshes which can be processed via downstream filters. Note that this second case requires a fair amount of work to merge nearly coincident points to produce the watertight surfaces. (Note: a built-in topologically-based point merging process is used. Users can disable the built in point merging process, and use subsequent filters like vtkStaticCleanPolyData to merge coincident points, remove degenerate face primitives, etc, and otherwise process the surfaces with smoothing etc. vtkStaticCleanPolyData uses a proximal geometric point merging process requiring a tolerance, this can cause problems in some cases.)

An implementation note: this filter is implemented using a parallel algorithm, but produces invariant output in terms of the construction of the geometric primitives (Voronoi cells, adjacency graphs, etc.) Each input generating point of ptId, produces tiles of tileId, where ptId == tileId. This means for debugging purposes, picking output primitives with POINT_IDS enabled provides a means to select the original generating tile.

Warning

Delaunay degenerate cases (when more than three points are co-circular) are of theoretical and practical interest in the implementation of Delaunay and Voronoi algorithms. Degenerate cases introduce numerical challenges into algorithms, and extremely important work such as Shewchuk's geometric predicates (https://www.cs.cmu.edu/~quake/robust.html). In this algorithm, degeneracies are treated in two ways. First, Voronoi spokes, which correspond to dual, very short "edges" on a Voronoi tile can be geometrically pruned (i.e., the edge deleted, thereby eliminating a spoke). Alternatively, the adjacency graph can be processed, using topological reasoning, to identify and repair inconsistencies in the resulting mesh, ensuring that a valid result is produced.

Note

This class is implemented using the templated vtkVoronoiCore2D class. The set of vtkVoronoiCore* classes provide a framework for computing 2D and 3D Voronoi tessellations (and related constructs such as the Delaunay triangulation and Voronoi adjacency graph).

There are several utility classes that can be used with vtkVoronoiFlower2D (and related classes) to massage data and improve performance.

vtkFillPointCloud can add points to a set of input points P. These points
are labeled "outside" of P, placed in areas where no existing points exist
in P. Adding these outside points can markedly improve performance and
improve the quality of the output mesh.
 
vtkLabeledImagePointSampler can be used to transform a segmented image
into a point cloud suitable for processing by vtkVoronoi3D (and related
filters). By using this filter along with image crop filters it is
possible to "snip" out areas of interest, producing a sample of points
and processing them as an input point cloud.
 
vtkJogglePoints can be used to improve the performance and quality of the
output mesh. Voronoi and Delaunay methods are known for their sensitivity
to numerical degeneracies (e.g., more than n+1 points cospherical to a
n-dimensional simplex in a n-dimensional Delaunay trianglulation). The
filter randomly perturbs (i.e., joggles or jitters) a point set thereby
removing degeneracies.

Warning

Coincident input points will likely produce an invalid tessellation. This is because the Voronoi tessellation requires unique input points. Use a cleaning filter (like vtkStaticCleanPolyData/vtkCleanPolyData) to remove duplicate points if necessary.

This algorithm is a novel approach which implements embarrassingly parallel algorithms for both the Voronoi tessellation and the generation of the dual Delaunay triangulation. At the core of the algorithm is the use of a spatial locator to determine points close to a specified position (the Voronoi tile generating point). Points are requested in increasing, disjoint annular rings. Currently, a vtkStaticPointLocator2D is used because it is both threaded (its construction) and supports thread-safe queries. While other locators could be used in principal (and may be added in the future), they must support thread-safe operations and annular point requests.

This class has been threaded with vtkSMPTools. Using TBB or other non-sequential type (set in the CMake variable VTK_SMP_IMPLEMENTATION_TYPE) may improve performance significantly.

See also

vtkVoronoiCore2D vtkVoronoiCore3D vtkDelaunay2D vtkStaticPointLocator2D vtkVoronoi3D vtkDelaunay3D vtkJogglePoints vtkFillPointCloud vtkLabeledImagePointSampler vtkTransformFilter

Tests:

vtkVoronoiFlower2D (Tests)

Definition at line 204 of file vtkVoronoiFlower2D.h.

Member Typedef Documentation

Superclass

typedef vtkPolyDataAlgorithm vtkVoronoiFlower2D::Superclass

Standard methods for instantiation, type information, and printing.

Definition at line 212 of file vtkVoronoiFlower2D.h.

Member Enumeration Documentation

OutputTypeOptions

enum vtkVoronoiFlower2D::OutputTypeOptions

Used to control filter output.

Enumerator
VORONOI
DELAUNAY
VORONOI_AND_DELAUNAY
SPEED_TEST

Definition at line 219 of file vtkVoronoiFlower2D.h.

GeneratePointScalarsStrategy

enum vtkVoronoiFlower2D::GeneratePointScalarsStrategy

Used internally to generate point scalars for the output.

When a point of interest is defined, then additional point scalars which are the radii of the Voronoi flower are produced, which is useful for debugging or instructional purposes.

Enumerator
NO_POINT_SCALARS
FLOWER_RADII

Definition at line 289 of file vtkVoronoiFlower2D.h.

GenerateCellScalarsStrategy

enum vtkVoronoiFlower2D::GenerateCellScalarsStrategy

Specify how to generate cell scalars for the outputs.

Note that some output styles (e.g., BOUNDARY) may produce multiple output primitives for each Voronoi tile processed, each of these primitives will take on the same cell scalar value as the generating tile (unless RANDOM is specified). So what's effectively happening here is that a scalar value is assigned to each generating Voronoi tile, and any derived primitives (such as Delaunay triangles) generated by the tile assume that scalar value. Finally, random produces up to 64 random integer values for each output primitive.

Enumerator
NO_CELL_SCALARS
POINT_IDS
REGION_IDS
NUMBER_SIDES
PRIM_IDS
THREAD_IDS
RANDOM

Definition at line 308 of file vtkVoronoiFlower2D.h.

ProjectionPlaneStrategy

enum vtkVoronoiFlower2D::ProjectionPlaneStrategy

Enumerator
XY_PLANE
SPECIFIED_TRANSFORM_PLANE
BEST_FITTING_PLANE

Definition at line 413 of file vtkVoronoiFlower2D.h.

Constructor & Destructor Documentation

vtkVoronoiFlower2D()

vtkVoronoiFlower2D::vtkVoronoiFlower2D ( )

protected

~vtkVoronoiFlower2D()

vtkVoronoiFlower2D::~vtkVoronoiFlower2D ( )

overrideprotecteddefault

Member Function Documentation

New()

static vtkVoronoiFlower2D * vtkVoronoiFlower2D::New ( )

static

Standard methods for instantiation, type information, and printing.

IsTypeOf()

static vtkTypeBool vtkVoronoiFlower2D::IsTypeOf ( const char * type )

static

Standard methods for instantiation, type information, and printing.

IsA()

virtual vtkTypeBool vtkVoronoiFlower2D::IsA ( const char * type )

virtual

Standard methods for instantiation, type information, and printing.

Reimplemented from vtkPolyDataAlgorithm.

SafeDownCast()

static vtkVoronoiFlower2D * vtkVoronoiFlower2D::SafeDownCast ( vtkObjectBase * o )

static

Standard methods for instantiation, type information, and printing.

NewInstanceInternal()

virtual vtkObjectBase * vtkVoronoiFlower2D::NewInstanceInternal ( ) const

protectedvirtual

Standard methods for instantiation, type information, and printing.

Reimplemented from vtkPolyDataAlgorithm.

NewInstance()

vtkVoronoiFlower2D * vtkVoronoiFlower2D::NewInstance

(

)

const

Standard methods for instantiation, type information, and printing.

PrintSelf()

void vtkVoronoiFlower2D::PrintSelf ( ostream & os, vtkIndent indent )

overridevirtual

Standard methods for instantiation, type information, and printing.

Reimplemented from vtkPolyDataAlgorithm.

SetOutputType()

virtual void vtkVoronoiFlower2D::SetOutputType ( int )

virtual

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

GetOutputType()

virtual int vtkVoronoiFlower2D::GetOutputType ( )

virtual

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

SetOutputTypeToVoronoi()

void vtkVoronoiFlower2D::SetOutputTypeToVoronoi ( )

inline

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

Definition at line 248 of file vtkVoronoiFlower2D.h.

SetOutputTypeToDelaunay()

void vtkVoronoiFlower2D::SetOutputTypeToDelaunay ( )

inline

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

Definition at line 249 of file vtkVoronoiFlower2D.h.

SetOutputTypeToVoronoiAndDelaunay()

void vtkVoronoiFlower2D::SetOutputTypeToVoronoiAndDelaunay ( )

inline

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

Definition at line 250 of file vtkVoronoiFlower2D.h.

SetOutputTypeToSpeedTest()

void vtkVoronoiFlower2D::SetOutputTypeToSpeedTest ( )

inline

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

Definition at line 251 of file vtkVoronoiFlower2D.h.

SetPadding()

virtual void vtkVoronoiFlower2D::SetPadding ( double )

virtual

Specify a padding for the bounding box of the points.

A >0 padding is necessary in order to create valid Voronoi tiles on the boundary of the tessellation. The padding is specified as a fraction of the diagonal length of the bounding box of the points. Note that changing the padding can affect the resulting tiles and Delaunay triangulation. This is because any Voronoi tessellation will have semi-infinite tiles on the boundary of the tessellation, practically meaning that as the padding is increased, the dual Delaunay triangulation will become more convex (i.e., and as the padding is decreased, the Delaunay triangulation will become less convex).

GetPadding()

virtual double vtkVoronoiFlower2D::GetPadding ( )

virtual

Control whether to produce an output Voronoi tessellation and/or an output Delaunay triangulation.

(If enabled, the Voronoi tessellation is produced in filter output #0. If enabled, the Delaunay triangulation is produced in output #1.) Note that this OutputType data member just controls what is sent to the filter output–in all cases this filter computes an internal representation of the Voronoi tessellation. However if disabled, then the cost of memory and execution is reduced by not actually instantiating the Voronoi polygonal mesh. This can be useful for example if only the Delaunay triangulation is desired. By default, the filter only produces the Voronoi tessellation. If specified, the Delaunay triangulation is computed by extracting the dual of the Voronoi tessellation. (Note that the extraction process may include topological checks to ensure that the Voronoi tessellation is valid. See the Validate data member for more information.) An optional output type, SPEED_TEST, produces no output and is used for benchmarking. It simply generates the Voronoi tiles and returns.

SetPassPointData()

virtual void vtkVoronoiFlower2D::SetPassPointData ( vtkTypeBool )

virtual

Indicate whether to pass input point data through to the filter outputs.

If enabled, input point data is passed through to the Voronoi output #0 as cell data; and to the Delaunay output #1 as point data. By default, passing the input point data is enabled.

GetPassPointData()

virtual vtkTypeBool vtkVoronoiFlower2D::GetPassPointData ( )

virtual

Indicate whether to pass input point data through to the filter outputs.

If enabled, input point data is passed through to the Voronoi output #0 as cell data; and to the Delaunay output #1 as point data. By default, passing the input point data is enabled.

PassPointDataOn()

virtual void vtkVoronoiFlower2D::PassPointDataOn ( )

virtual

Indicate whether to pass input point data through to the filter outputs.

If enabled, input point data is passed through to the Voronoi output #0 as cell data; and to the Delaunay output #1 as point data. By default, passing the input point data is enabled.

PassPointDataOff()

virtual void vtkVoronoiFlower2D::PassPointDataOff ( )

virtual

Indicate whether to pass input point data through to the filter outputs.

If enabled, input point data is passed through to the Voronoi output #0 as cell data; and to the Delaunay output #1 as point data. By default, passing the input point data is enabled.

GetGeneratePointScalars()

virtual int vtkVoronoiFlower2D::GetGeneratePointScalars ( )

virtual

Used internally to generate point scalars for the output.

When a point of interest is defined, then additional point scalars which are the radii of the Voronoi flower are produced, which is useful for debugging or instructional purposes.

SetGenerateCellScalars()

virtual void vtkVoronoiFlower2D::SetGenerateCellScalars ( int )

virtual

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

GetGenerateCellScalars()

virtual int vtkVoronoiFlower2D::GetGenerateCellScalars ( )

virtual

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

SetGenerateCellScalarsToNone()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToNone ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 332 of file vtkVoronoiFlower2D.h.

SetGenerateCellScalarsToPointIds()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToPointIds ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 333 of file vtkVoronoiFlower2D.h.

SetGenerateCellScalarsToRegionIds()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToRegionIds ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 334 of file vtkVoronoiFlower2D.h.

SetGenerateCellScalarsToNumberOfSides()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToNumberOfSides ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 335 of file vtkVoronoiFlower2D.h.

SetGenerateCellScalarsToPrimIds()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToPrimIds ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 336 of file vtkVoronoiFlower2D.h.

SetGenerateCellScalarsToThreadIds()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToThreadIds ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 337 of file vtkVoronoiFlower2D.h.

SetGenerateCellScalarsToRandom()

void vtkVoronoiFlower2D::SetGenerateCellScalarsToRandom ( )

inline

Indicate whether to create a cell scalar array as part of the output.

Options include generating no scalars; using input point ids (and hence output tiles); using input region ids; using the number of sides produced by each Voronoi tile; defining scalars by execution thread ids; using primitive (i.e., output Delaunay triangle id); or generating a random scalar value [0<=s<64] for each output primitive. By default point ids cell scalars are generated.

Definition at line 338 of file vtkVoronoiFlower2D.h.

GetMergePoints()

virtual vtkTypeBool vtkVoronoiFlower2D::GetMergePoints ( )

virtual

Specify whether to merge (nearly) concident points in order to produce compatible output meshes.

Visualization of the output is possible without point merging; however subsequent operations that require compatible meshes will not work. Note that point merging does require significant time to compute. By default this is on.

SetMergePoints()

virtual void vtkVoronoiFlower2D::SetMergePoints ( vtkTypeBool )

virtual

Specify whether to merge (nearly) concident points in order to produce compatible output meshes.

Visualization of the output is possible without point merging; however subsequent operations that require compatible meshes will not work. Note that point merging does require significant time to compute. By default this is on.

MergePointsOn()

virtual void vtkVoronoiFlower2D::MergePointsOn ( )

virtual

Specify whether to merge (nearly) concident points in order to produce compatible output meshes.

Visualization of the output is possible without point merging; however subsequent operations that require compatible meshes will not work. Note that point merging does require significant time to compute. By default this is on.

MergePointsOff()

virtual void vtkVoronoiFlower2D::MergePointsOff ( )

virtual

Specify whether to merge (nearly) concident points in order to produce compatible output meshes.

Visualization of the output is possible without point merging; however subsequent operations that require compatible meshes will not work. Note that point merging does require significant time to compute. By default this is on.

FindTile()

vtkIdType vtkVoronoiFlower2D::FindTile

(

double

x[3]

)

The following methods - FindTile() and GetTileData() - can be used to locate/query the tile containing a point x (i.e., given that a Voronoi tile Vi is a region of closest proximity to the generating point x).

FindTile() returns the tile id/point id of a query location x. If desired, GetTileData() will return the associated convex polygonal tile in the user-supplied vtkPolyData. (GetTileData() requires that the output type is VORONOI or VORONOI_AND_DELAUNAY.) Note that if the query point x is outside of the bounds of the input point set, an id value <0 is returned. Also, these methods are only valid after the filter executes. (The third component of thw query point x[2] should be in the transformed space of the input points.)

GetTileData()

void vtkVoronoiFlower2D::GetTileData	(	vtkIdType	tileId,
		vtkPolyData *	tileData )

The following methods - FindTile() and GetTileData() - can be used to locate/query the tile containing a point x (i.e., given that a Voronoi tile Vi is a region of closest proximity to the generating point x).

FindTile() returns the tile id/point id of a query location x. If desired, GetTileData() will return the associated convex polygonal tile in the user-supplied vtkPolyData. (GetTileData() requires that the output type is VORONOI or VORONOI_AND_DELAUNAY.) Note that if the query point x is outside of the bounds of the input point set, an id value <0 is returned. Also, these methods are only valid after the filter executes. (The third component of thw query point x[2] should be in the transformed space of the input points.)

SetPruneTolerance()

virtual void vtkVoronoiFlower2D::SetPruneTolerance ( double )

virtual

If PruneSpokes is enabled, specify a relative tolerance to determine which spokes to prune.

The relative tolerance is defined as the ratio of the edge length of a Voronoi tile (i.e., convex polygon), to the length of the associated spoke connecting two Voronoi tile generator points. If the relative tolerance is <= the PruneTolerance, then the spoke (and associated edge) are pruned. This means collapsing the edge and therefore the connection with the neighbor.

GetPruneTolerance()

virtual double vtkVoronoiFlower2D::GetPruneTolerance ( )

virtual

If PruneSpokes is enabled, specify a relative tolerance to determine which spokes to prune.

The relative tolerance is defined as the ratio of the edge length of a Voronoi tile (i.e., convex polygon), to the length of the associated spoke connecting two Voronoi tile generator points. If the relative tolerance is <= the PruneTolerance, then the spoke (and associated edge) are pruned. This means collapsing the edge and therefore the connection with the neighbor.

SetValidate()

virtual void vtkVoronoiFlower2D::SetValidate ( vtkTypeBool )

virtual

Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).

Enabling validation increases computation time. By default, validation is on. Validation can be disabled but this may result in topological inconsistencies in the output Delaunay triangulation.

GetValidate()

virtual vtkTypeBool vtkVoronoiFlower2D::GetValidate ( )

virtual

Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).

Enabling validation increases computation time. By default, validation is on. Validation can be disabled but this may result in topological inconsistencies in the output Delaunay triangulation.

ValidateOn()

virtual void vtkVoronoiFlower2D::ValidateOn ( )

virtual

Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).

Enabling validation increases computation time. By default, validation is on. Validation can be disabled but this may result in topological inconsistencies in the output Delaunay triangulation.

ValidateOff()

virtual void vtkVoronoiFlower2D::ValidateOff ( )

virtual

Enable the validation and repair of the Voronoi tesselation (which also affects the Delaunay triangulation if requested).

Enabling validation increases computation time. By default, validation is on. Validation can be disabled but this may result in topological inconsistencies in the output Delaunay triangulation.

SetTransform()

virtual void vtkVoronoiFlower2D::SetTransform ( vtkAbstractTransform * )

virtual

Set / get the transform which is applied to points to generate a 2D problem.

This maps a 3D dataset into a 2D dataset where triangulation can be done on the XY plane. The points are then tessellated and the topology of tessellation are used as the output topology. The output points are the original (untransformed) points. The transform can be any subclass of vtkAbstractTransform (thus it does not need to be a linear or invertible transform).

GetTransform()

virtual vtkAbstractTransform * vtkVoronoiFlower2D::GetTransform ( )

virtual

Set / get the transform which is applied to points to generate a 2D problem.

This maps a 3D dataset into a 2D dataset where triangulation can be done on the XY plane. The points are then tessellated and the topology of tessellation are used as the output topology. The output points are the original (untransformed) points. The transform can be any subclass of vtkAbstractTransform (thus it does not need to be a linear or invertible transform).

SetProjectionPlaneMode()

virtual void vtkVoronoiFlower2D::SetProjectionPlaneMode ( int )

virtual

Define the method to project the input 3D points into a 2D plane for tessellation.

When the VTK_STRUCTURED_XY_PLANE is set, the z-coordinate is simply ignored. When VTK_SET_TRANSFORM_PLANE is set, then a transform must be supplied and the points are transformed using it. Finally, if VTK_BEST_FITTING_PLANE is set, then the filter computes a best fitting plane and projects the points onto it.

GetProjectionPlaneMode()

virtual int vtkVoronoiFlower2D::GetProjectionPlaneMode ( )

virtual

Define the method to project the input 3D points into a 2D plane for tessellation.

When the VTK_STRUCTURED_XY_PLANE is set, the z-coordinate is simply ignored. When VTK_SET_TRANSFORM_PLANE is set, then a transform must be supplied and the points are transformed using it. Finally, if VTK_BEST_FITTING_PLANE is set, then the filter computes a best fitting plane and projects the points onto it.

SetProjectionPlaneModeToXYPlane()

void vtkVoronoiFlower2D::SetProjectionPlaneModeToXYPlane ( )

inline

Define the method to project the input 3D points into a 2D plane for tessellation.

When the VTK_STRUCTURED_XY_PLANE is set, the z-coordinate is simply ignored. When VTK_SET_TRANSFORM_PLANE is set, then a transform must be supplied and the points are transformed using it. Finally, if VTK_BEST_FITTING_PLANE is set, then the filter computes a best fitting plane and projects the points onto it.

Definition at line 431 of file vtkVoronoiFlower2D.h.

SetProjectionPlaneModeToSpecifiedTransformPlane()

void vtkVoronoiFlower2D::SetProjectionPlaneModeToSpecifiedTransformPlane ( )

inline

Define the method to project the input 3D points into a 2D plane for tessellation.

When the VTK_STRUCTURED_XY_PLANE is set, the z-coordinate is simply ignored. When VTK_SET_TRANSFORM_PLANE is set, then a transform must be supplied and the points are transformed using it. Finally, if VTK_BEST_FITTING_PLANE is set, then the filter computes a best fitting plane and projects the points onto it.

Definition at line 432 of file vtkVoronoiFlower2D.h.

SetProjectionPlaneModeToBestFittingPlane()

void vtkVoronoiFlower2D::SetProjectionPlaneModeToBestFittingPlane ( )

inline

Define the method to project the input 3D points into a 2D plane for tessellation.

When the VTK_STRUCTURED_XY_PLANE is set, the z-coordinate is simply ignored. When VTK_SET_TRANSFORM_PLANE is set, then a transform must be supplied and the points are transformed using it. Finally, if VTK_BEST_FITTING_PLANE is set, then the filter computes a best fitting plane and projects the points onto it.

Definition at line 436 of file vtkVoronoiFlower2D.h.

SetPointOfInterest()

virtual void vtkVoronoiFlower2D::SetPointOfInterest ( vtkIdType )

virtual

These methods are for debugging or instructional purposes.

When the point of interest is specified (i.e., set to a non-negative number) then the algorithm will process this single point (whose id is the PointOfInterest). When PointsOfInterest is specified thorugh a supplied vtkIdTypeArray (this is in addition to the PointOfInterest), then only those tiles in the PointOfInterest + PointsOfInterestArray will be produced. The maximum number of clips (the MaximumNumberOfTileClips) can be specified. If MaximumNumberOfTileClips=0, then the initial tile (single point within the bounding box) is produced; if ==1 then the split with the closest point is produced; and so on. By default the PointOfInterest is set to (-1), and the number of clips is unlimited (i.e., MaximumNumberOfTileClips=VTK_ID_MAX and therefore automatically limited by the algorithm).

GetPointOfInterest()

virtual vtkIdType vtkVoronoiFlower2D::GetPointOfInterest ( )

virtual

These methods are for debugging or instructional purposes.

When the point of interest is specified (i.e., set to a non-negative number) then the algorithm will process this single point (whose id is the PointOfInterest). When PointsOfInterest is specified thorugh a supplied vtkIdTypeArray (this is in addition to the PointOfInterest), then only those tiles in the PointOfInterest + PointsOfInterestArray will be produced. The maximum number of clips (the MaximumNumberOfTileClips) can be specified. If MaximumNumberOfTileClips=0, then the initial tile (single point within the bounding box) is produced; if ==1 then the split with the closest point is produced; and so on. By default the PointOfInterest is set to (-1), and the number of clips is unlimited (i.e., MaximumNumberOfTileClips=VTK_ID_MAX and therefore automatically limited by the algorithm).

SetPointsOfInterest()

virtual void vtkVoronoiFlower2D::SetPointsOfInterest ( vtkIdTypeArray * )

virtual

These methods are for debugging or instructional purposes.

When the point of interest is specified (i.e., set to a non-negative number) then the algorithm will process this single point (whose id is the PointOfInterest). When PointsOfInterest is specified thorugh a supplied vtkIdTypeArray (this is in addition to the PointOfInterest), then only those tiles in the PointOfInterest + PointsOfInterestArray will be produced. The maximum number of clips (the MaximumNumberOfTileClips) can be specified. If MaximumNumberOfTileClips=0, then the initial tile (single point within the bounding box) is produced; if ==1 then the split with the closest point is produced; and so on. By default the PointOfInterest is set to (-1), and the number of clips is unlimited (i.e., MaximumNumberOfTileClips=VTK_ID_MAX and therefore automatically limited by the algorithm).

GetPointsOfInterest()

virtual vtkIdTypeArray * vtkVoronoiFlower2D::GetPointsOfInterest ( )

virtual

These methods are for debugging or instructional purposes.

When the point of interest is specified (i.e., set to a non-negative number) then the algorithm will process this single point (whose id is the PointOfInterest). When PointsOfInterest is specified thorugh a supplied vtkIdTypeArray (this is in addition to the PointOfInterest), then only those tiles in the PointOfInterest + PointsOfInterestArray will be produced. The maximum number of clips (the MaximumNumberOfTileClips) can be specified. If MaximumNumberOfTileClips=0, then the initial tile (single point within the bounding box) is produced; if ==1 then the split with the closest point is produced; and so on. By default the PointOfInterest is set to (-1), and the number of clips is unlimited (i.e., MaximumNumberOfTileClips=VTK_ID_MAX and therefore automatically limited by the algorithm).

SetMaximumNumberOfTileClips()

virtual void vtkVoronoiFlower2D::SetMaximumNumberOfTileClips ( vtkIdType )

virtual

These methods are for debugging or instructional purposes.

When the point of interest is specified (i.e., set to a non-negative number) then the algorithm will process this single point (whose id is the PointOfInterest). When PointsOfInterest is specified thorugh a supplied vtkIdTypeArray (this is in addition to the PointOfInterest), then only those tiles in the PointOfInterest + PointsOfInterestArray will be produced. The maximum number of clips (the MaximumNumberOfTileClips) can be specified. If MaximumNumberOfTileClips=0, then the initial tile (single point within the bounding box) is produced; if ==1 then the split with the closest point is produced; and so on. By default the PointOfInterest is set to (-1), and the number of clips is unlimited (i.e., MaximumNumberOfTileClips=VTK_ID_MAX and therefore automatically limited by the algorithm).

GetMaximumNumberOfTileClips()

virtual vtkIdType vtkVoronoiFlower2D::GetMaximumNumberOfTileClips ( )

virtual

These methods are for debugging or instructional purposes.

When the point of interest is specified (i.e., set to a non-negative number) then the algorithm will process this single point (whose id is the PointOfInterest). When PointsOfInterest is specified thorugh a supplied vtkIdTypeArray (this is in addition to the PointOfInterest), then only those tiles in the PointOfInterest + PointsOfInterestArray will be produced. The maximum number of clips (the MaximumNumberOfTileClips) can be specified. If MaximumNumberOfTileClips=0, then the initial tile (single point within the bounding box) is produced; if ==1 then the split with the closest point is produced; and so on. By default the PointOfInterest is set to (-1), and the number of clips is unlimited (i.e., MaximumNumberOfTileClips=VTK_ID_MAX and therefore automatically limited by the algorithm).

GetLocator()

vtkStaticPointLocator2D * vtkVoronoiFlower2D::GetLocator ( )

inline

Retrieve the internal locator to manually configure it, for example specifying the number of points per bucket.

This method is generally used for debugging or testing purposes.

Definition at line 472 of file vtkVoronoiFlower2D.h.

SetGenerateVoronoiFlower()

virtual void vtkVoronoiFlower2D::SetGenerateVoronoiFlower ( vtkTypeBool )

virtual

These methods are for debugging or instructional purposes.

If GenerateVoronoiFlower is on, and the PointOfInterest is specified, then third and fourth (optional) outputs are populated which contains a representation of the Voronoi flower neighborhood metric (third output) and the single Voronoi tile (corresponding to PointOfInterest) with point scalar values indicating the radii of the Voronoi Flower petals (i.e., circles contributing to the neighborhood metric).

GetGenerateVoronoiFlower()

virtual vtkTypeBool vtkVoronoiFlower2D::GetGenerateVoronoiFlower ( )

virtual

These methods are for debugging or instructional purposes.

If GenerateVoronoiFlower is on, and the PointOfInterest is specified, then third and fourth (optional) outputs are populated which contains a representation of the Voronoi flower neighborhood metric (third output) and the single Voronoi tile (corresponding to PointOfInterest) with point scalar values indicating the radii of the Voronoi Flower petals (i.e., circles contributing to the neighborhood metric).

GenerateVoronoiFlowerOn()

virtual void vtkVoronoiFlower2D::GenerateVoronoiFlowerOn ( )

virtual

These methods are for debugging or instructional purposes.

If GenerateVoronoiFlower is on, and the PointOfInterest is specified, then third and fourth (optional) outputs are populated which contains a representation of the Voronoi flower neighborhood metric (third output) and the single Voronoi tile (corresponding to PointOfInterest) with point scalar values indicating the radii of the Voronoi Flower petals (i.e., circles contributing to the neighborhood metric).

GenerateVoronoiFlowerOff()

virtual void vtkVoronoiFlower2D::GenerateVoronoiFlowerOff ( )

virtual

These methods are for debugging or instructional purposes.

If GenerateVoronoiFlower is on, and the PointOfInterest is specified, then third and fourth (optional) outputs are populated which contains a representation of the Voronoi flower neighborhood metric (third output) and the single Voronoi tile (corresponding to PointOfInterest) with point scalar values indicating the radii of the Voronoi Flower petals (i.e., circles contributing to the neighborhood metric).

GetSpheres()

virtual vtkSpheres * vtkVoronoiFlower2D::GetSpheres ( )

virtual

Return the Voronoi flower (a collection of spheres) for the point of interest in the form of a vtkSpheres implicit function.

This is valid only if GenerateVoronoiFlower and the PointOfInterest are set, and after the filter executes. Typically this is used for debugging or educational purposes.

SetBatchSize()

virtual void vtkVoronoiFlower2D::SetBatchSize ( unsigned int )

virtual

Specify the number of input generating points in a batch, where a batch defines a contiguous subset of the input points operated on during threaded execution.

Generally this is only used for debugging or performance studies (since batch size affects the thread workload).

Default is 1000.

GetBatchSize()

virtual unsigned int vtkVoronoiFlower2D::GetBatchSize ( )

virtual

Specify the number of input generating points in a batch, where a batch defines a contiguous subset of the input points operated on during threaded execution.

Generally this is only used for debugging or performance studies (since batch size affects the thread workload).

Default is 1000.

GetMaximumNumberOfPoints()

int vtkVoronoiFlower2D::GetMaximumNumberOfPoints ( )

inline

Return the maximum number of sides across all Voronoi tiles.

Note

These methods are valid only after algorithm execution.

Definition at line 520 of file vtkVoronoiFlower2D.h.

GetMaximumNumberOfSides()

int vtkVoronoiFlower2D::GetMaximumNumberOfSides ( )

inline

Return the maximum number of sides across all Voronoi tiles.

Note

These methods are valid only after algorithm execution.

Definition at line 521 of file vtkVoronoiFlower2D.h.

GetMaximumNumberOfEdges()

int vtkVoronoiFlower2D::GetMaximumNumberOfEdges ( )

inline

Return the maximum number of sides across all Voronoi tiles.

Note

These methods are valid only after algorithm execution.

Definition at line 522 of file vtkVoronoiFlower2D.h.

GetNumberOfThreads()

int vtkVoronoiFlower2D::GetNumberOfThreads ( )

inline

Return the number of threads actually used during execution.

Note

This method is only valid after the filter executes.

Definition at line 530 of file vtkVoronoiFlower2D.h.

GetMTime()

vtkMTimeType vtkVoronoiFlower2D::GetMTime ( )

overridevirtual

Get the MTime of this object also considering the locator.

Reimplemented from vtkObject.

UpdateExecutionInformation()

template<typename T>

void vtkVoronoiFlower2D::UpdateExecutionInformation

(

T *

voro

)

Method used to update this filter's execution parameters after the internal, templated instance of vtkVoronoiCore2D completes execution.

Definition at line 585 of file vtkVoronoiFlower2D.h.

RequestData()

int vtkVoronoiFlower2D::RequestData ( vtkInformation * request, vtkInformationVector ** inputVector, vtkInformationVector * outputVector )

overrideprotectedvirtual

This is called by the superclass.

This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

FillInputPortInformation()

int vtkVoronoiFlower2D::FillInputPortInformation ( int port, vtkInformation * info )

overrideprotectedvirtual

Fill the input port information objects for this algorithm.

This is invoked by the first call to GetInputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkPolyDataAlgorithm.

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

• Filters/Meshing/vtkVoronoiFlower2D.h