adjust point positions using a windowed sinc function interpolation kernel More...

#include <vtkWindowedSincPolyDataFilter.h>

Inheritance diagram for vtkWindowedSincPolyDataFilter:

Collaboration diagram for vtkWindowedSincPolyDataFilter:

Public Types
typedef vtkPolyDataAlgorithm	Superclass

Public Types inherited from vtkPolyDataAlgorithm
typedef vtkAlgorithm	Superclass

Public Types inherited from vtkAlgorithm
typedef vtkObject	Superclass

enum	DesiredOutputPrecision { SINGLE_PRECISION, DOUBLE_PRECISION, DEFAULT_PRECISION }

Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

Public Member Functions
virtual int	IsA (const char *type)

vtkWindowedSincPolyDataFilter *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)


virtual void	SetNumberOfIterations (int)

virtual int	GetNumberOfIterations ()


virtual void	SetPassBand (double)

virtual double	GetPassBand ()


virtual void	SetNormalizeCoordinates (int)

virtual int	GetNormalizeCoordinates ()

virtual void	NormalizeCoordinatesOn ()

virtual void	NormalizeCoordinatesOff ()


virtual void	SetFeatureEdgeSmoothing (int)

virtual int	GetFeatureEdgeSmoothing ()

virtual void	FeatureEdgeSmoothingOn ()

virtual void	FeatureEdgeSmoothingOff ()


virtual void	SetFeatureAngle (double)

virtual double	GetFeatureAngle ()


virtual void	SetEdgeAngle (double)

virtual double	GetEdgeAngle ()


virtual void	SetBoundarySmoothing (int)

virtual int	GetBoundarySmoothing ()

virtual void	BoundarySmoothingOn ()

virtual void	BoundarySmoothingOff ()


virtual void	SetNonManifoldSmoothing (int)

virtual int	GetNonManifoldSmoothing ()

virtual void	NonManifoldSmoothingOn ()

virtual void	NonManifoldSmoothingOff ()


virtual void	SetGenerateErrorScalars (int)

virtual int	GetGenerateErrorScalars ()

virtual void	GenerateErrorScalarsOn ()

virtual void	GenerateErrorScalarsOff ()


virtual void	SetGenerateErrorVectors (int)

virtual int	GetGenerateErrorVectors ()

virtual void	GenerateErrorVectorsOn ()

virtual void	GenerateErrorVectorsOff ()

Public Member Functions inherited from vtkPolyDataAlgorithm
vtkPolyDataAlgorithm *	NewInstance () const

vtkDataObject *	GetInput ()

vtkDataObject *	GetInput (int port)

vtkPolyData *	GetPolyDataInput (int port)

vtkPolyData *	GetOutput ()

vtkPolyData *	GetOutput (int)

virtual void	SetOutput (vtkDataObject *d)

virtual int	ProcessRequest (vtkInformation , vtkInformationVector , vtkInformationVector )

void	SetInputData (vtkDataObject *)

void	SetInputData (int, vtkDataObject *)

void	AddInputData (vtkDataObject *)

void	AddInputData (int, vtkDataObject *)

Public Member Functions inherited from vtkAlgorithm
vtkAlgorithm *	NewInstance () const

int	HasExecutive ()

vtkExecutive *	GetExecutive ()

virtual void	SetExecutive (vtkExecutive *executive)

virtual int	ModifyRequest (vtkInformation *request, int when)

vtkInformation *	GetInputPortInformation (int port)

vtkInformation *	GetOutputPortInformation (int port)

int	GetNumberOfInputPorts ()

int	GetNumberOfOutputPorts ()

void	UpdateProgress (double amount)

vtkInformation *	GetInputArrayInformation (int idx)

void	RemoveAllInputs ()

vtkDataObject *	GetOutputDataObject (int port)

virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)

virtual void	RemoveInputConnection (int port, int idx)

virtual void	RemoveAllInputConnections (int port)

int	GetNumberOfInputConnections (int port)

int	GetTotalNumberOfInputConnections ()

vtkAlgorithmOutput *	GetInputConnection (int port, int index)

vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)

vtkAlgorithm *	GetInputAlgorithm (int port, int index)

vtkExecutive *	GetInputExecutive (int port, int index)

vtkInformation *	GetInputInformation (int port, int index)

vtkInformation *	GetOutputInformation (int port)

virtual void	UpdateInformation ()

virtual void	UpdateDataObject ()

virtual void	PropagateUpdateExtent ()

virtual void	UpdateWholeExtent ()

void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)

int	SetUpdateExtentToWholeExtent (int port)

int	SetUpdateExtentToWholeExtent ()

void	SetUpdateExtent (int port, int extent[6])

int	ProcessRequest (vtkInformation request, vtkCollection inInfo, vtkInformationVector *outInfo)

virtual int	ComputePipelineMTime (vtkInformation request, vtkInformationVector inInfoVec, vtkInformationVector outInfoVec, int requestFromOutputPort, unsigned long *mtime)

virtual vtkInformation *	GetInformation ()

virtual void	SetInformation (vtkInformation *)

virtual void	Register (vtkObjectBase *o)

virtual void	UnRegister (vtkObjectBase *o)

virtual void	SetAbortExecute (int)

virtual int	GetAbortExecute ()

virtual void	AbortExecuteOn ()

virtual void	AbortExecuteOff ()

virtual void	SetProgress (double)

virtual double	GetProgress ()

void	SetProgressText (const char *ptext)

virtual char *	GetProgressText ()

virtual unsigned long	GetErrorCode ()

virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)

virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)

virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)

virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char fieldAssociation, const char attributeTypeorName)

vtkDataObject *	GetInputDataObject (int port, int connection)

virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)

virtual void	SetInputConnection (vtkAlgorithmOutput *input)

virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)

virtual void	AddInputConnection (vtkAlgorithmOutput *input)

virtual void	SetInputDataObject (int port, vtkDataObject *data)

virtual void	SetInputDataObject (vtkDataObject *data)

virtual void	AddInputDataObject (int port, vtkDataObject *data)

virtual void	AddInputDataObject (vtkDataObject *data)

vtkAlgorithmOutput *	GetOutputPort (int index)

vtkAlgorithmOutput *	GetOutputPort ()

vtkAlgorithm *	GetInputAlgorithm ()

vtkExecutive *	GetInputExecutive ()

vtkInformation *	GetInputInformation ()

virtual void	Update (int port)

virtual void	Update ()

virtual void	SetReleaseDataFlag (int)

virtual int	GetReleaseDataFlag ()

void	ReleaseDataFlagOn ()

void	ReleaseDataFlagOff ()

int	UpdateExtentIsEmpty (vtkInformation pinfo, vtkDataObject output)

int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)

void	SetUpdateExtent (int port, int piece, int numPieces, int ghostLevel)

void	SetUpdateExtent (int piece, int numPieces, int ghostLevel)

void	SetUpdateExtent (int extent[6])

int *	GetUpdateExtent ()

int *	GetUpdateExtent (int port)

void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)

void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)

void	GetUpdateExtent (int extent[6])

void	GetUpdateExtent (int port, int extent[6])

int	GetUpdatePiece ()

int	GetUpdatePiece (int port)

int	GetUpdateNumberOfPieces ()

int	GetUpdateNumberOfPieces (int port)

int	GetUpdateGhostLevel ()

int	GetUpdateGhostLevel (int port)

void	SetProgressObserver (vtkProgressObserver *)

virtual vtkProgressObserver *	GetProgressObserver ()

Public Member Functions inherited from vtkObject
vtkObject *	NewInstance () const

virtual void	DebugOn ()

virtual void	DebugOff ()

bool	GetDebug ()

void	SetDebug (bool debugFlag)

virtual void	Modified ()

virtual unsigned long	GetMTime ()

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)

vtkCommand *	GetCommand (unsigned long tag)

void	RemoveObserver (vtkCommand *)

void	RemoveObservers (unsigned long event, vtkCommand *)

void	RemoveObservers (const char event, vtkCommand )

int	HasObserver (unsigned long event, vtkCommand *)

int	HasObserver (const char event, vtkCommand )

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	HasObserver (const char *event)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

int	InvokeEvent (unsigned long event, void *callData)

int	InvokeEvent (const char event, void callData)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const

virtual void	Delete ()

virtual void	FastDelete ()

void	Print (ostream &os)

void	SetReferenceCount (int)

void	PrintRevisions (ostream &)

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

int	GetReferenceCount ()

Static Public Member Functions
static int	IsTypeOf (const char *type)

static vtkWindowedSincPolyDataFilter *	SafeDownCast (vtkObjectBase *o)

static vtkWindowedSincPolyDataFilter *	New ()

Static Public Member Functions inherited from vtkPolyDataAlgorithm
static vtkPolyDataAlgorithm *	New ()

static int	IsTypeOf (const char *type)

static vtkPolyDataAlgorithm *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithm *	New ()

static int	IsTypeOf (const char *type)

static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)

static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()

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 ()

static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()

static void	SetDefaultExecutivePrototype (vtkExecutive *proto)

Static Public Member Functions inherited from vtkObject
static int	IsTypeOf (const char *type)

static vtkObject *	SafeDownCast (vtkObjectBase *o)

static vtkObject *	New ()

static void	BreakOnError ()

static void	SetGlobalWarningDisplay (int val)

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static int	IsTypeOf (const char *name)

static vtkObjectBase *	New ()

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkWindowedSincPolyDataFilter ()

	~vtkWindowedSincPolyDataFilter ()

int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )

Protected Member Functions inherited from vtkPolyDataAlgorithm
	vtkPolyDataAlgorithm ()

	~vtkPolyDataAlgorithm ()

virtual int	RequestInformation (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)

virtual int	FillOutputPortInformation (int port, vtkInformation *info)

virtual int	FillInputPortInformation (int port, vtkInformation *info)

virtual int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )

Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()

	~vtkAlgorithm ()

virtual void	SetNumberOfInputPorts (int n)

virtual void	SetNumberOfOutputPorts (int n)

int	InputPortIndexInRange (int index, const char *action)

int	OutputPortIndexInRange (int index, const char *action)

int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)

virtual vtkExecutive *	CreateDefaultExecutive ()

virtual void	ReportReferences (vtkGarbageCollector *)

virtual void	SetNumberOfInputConnections (int port, int n)

int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)

int	GetInputArrayAssociation (int idx, vtkDataObject *input)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)

vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)

vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)

vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)

vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)

virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)

void	SetInputDataInternal (int port, vtkDataObject *input)

void	AddInputDataInternal (int port, vtkDataObject *input)

virtual void	SetErrorCode (unsigned long)

Protected Member Functions inherited from vtkObject
	vtkObject ()

virtual	~vtkObject ()

virtual void	RegisterInternal (vtkObjectBase *, int check)

virtual void	UnRegisterInternal (vtkObjectBase *, int check)

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)

void	InternalReleaseFocus ()

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
int	NumberOfIterations

double	PassBand

int	FeatureEdgeSmoothing

double	FeatureAngle

double	EdgeAngle

int	BoundarySmoothing

int	NonManifoldSmoothing

int	GenerateErrorScalars

int	GenerateErrorVectors

int	NormalizeCoordinates

Protected Attributes inherited from vtkAlgorithm
vtkInformation *	Information

double	Progress

char *	ProgressText

vtkProgressObserver *	ProgressObserver

unsigned long	ErrorCode

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
int	AbortExecute

Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()

Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

adjust point positions using a windowed sinc function interpolation kernel

vtkWindowedSincPolyDataFiler adjust point coordinate using a windowed sinc function interpolation kernel. The effect is to "relax" the mesh, making the cells better shaped and the vertices more evenly distributed. Note that this filter operates the lines, polygons, and triangle strips composing an instance of vtkPolyData. Vertex or poly-vertex cells are never modified.

The algorithm proceeds as follows. For each vertex v, a topological and geometric analysis is performed to determine which vertices are connected to v, and which cells are connected to v. Then, a connectivity array is constructed for each vertex. (The connectivity array is a list of lists of vertices that directly attach to each vertex.) Next, an iteration phase begins over all vertices. For each vertex v, the coordinates of v are modified using a windowed sinc function interpolation kernel. Taubin describes this methodology is the IBM tech report RC-20404 (#90237, dated 3/12/96) "Optimal Surface Smoothing as Filter Design" G. Taubin, T. Zhang and G. Golub. (Zhang and Golub are at Stanford University).

This report discusses using standard signal processing low-pass filters (in particular windowed sinc functions) to smooth polyhedra. The transfer functions of the low-pass filters are approximated by Chebyshev polynomials. This facilitates applying the filters in an iterative diffusion process (as opposed to a kernel convolution). The more smoothing iterations applied, the higher the degree of polynomial approximating the low-pass filter transfer function. Each smoothing iteration, therefore, applies the next higher term of the Chebyshev filter approximation to the polyhedron. This decoupling of the filter into an iteratively applied polynomial is possible since the Chebyshev polynomials are orthogonal, i.e. increasing the order of the approximation to the filter transfer function does not alter the previously calculated coefficients for the low order terms.

Note: Care must be taken to avoid smoothing with too few iterations. A Chebyshev approximation with too few terms is an poor approximation. The first few smoothing iterations represent a severe scaling and translation of the data. Subsequent iterations cause the smoothed polyhedron to converge to the true location and scale of the object. We have attempted to protect against this by automatically adjusting the filter, effectively widening the pass band. This adjustment is only possible if the number of iterations is greater than 1. Note that this sacrifices some degree of smoothing for model integrity. For those interested, the filter is adjusted by searching for a value sigma such that the actual pass band is k_pb + sigma and such that the filter transfer function evaluates to unity at k_pb, i.e. f(k_pb) = 1

To improve the numerical stability of the solution and minimize the scaling the translation effects, the algorithm can translate and scale the position coordinates to within the unit cube [-1, 1], perform the smoothing, and translate and scale the position coordinates back to the original coordinate frame. This mode is controlled with the NormalizeCoordinatesOn() / NormalizeCoordinatesOff() methods. For legacy reasons, the default is NormalizeCoordinatesOff.

This implementation is currently limited to using an interpolation kernel based on Hamming windows. Other windows (such as Hann, Blackman, Kaiser, Lanczos, Gaussian, and exponential windows) could be used instead.

There are some special instance variables used to control the execution of this filter. (These ivars basically control what vertices can be smoothed, and the creation of the connectivity array.) The BoundarySmoothing ivar enables/disables the smoothing operation on vertices that are on the "boundary" of the mesh. A boundary vertex is one that is surrounded by a semi-cycle of polygons (or used by a single line).

Another important ivar is FeatureEdgeSmoothing. If this ivar is enabled, then interior vertices are classified as either "simple", "interior edge", or "fixed", and smoothed differently. (Interior vertices are manifold vertices surrounded by a cycle of polygons; or used by two line cells.) The classification is based on the number of feature edges attached to v. A feature edge occurs when the angle between the two surface normals of a polygon sharing an edge is greater than the FeatureAngle ivar. Then, vertices used by no feature edges are classified "simple", vertices used by exactly two feature edges are classified "interior edge", and all others are "fixed" vertices.

Once the classification is known, the vertices are smoothed differently. Corner (i.e., fixed) vertices are not smoothed at all. Simple vertices are smoothed as before . Interior edge vertices are smoothed only along their two connected edges, and only if the angle between the edges is less than the EdgeAngle ivar.

The total smoothing can be controlled by using two ivars. The NumberOfIterations determines the maximum number of smoothing passes. The NumberOfIterations corresponds to the degree of the polynomial that is used to approximate the windowed sinc function. Ten or twenty iterations is all the is usually necessary. Contrast this with vtkSmoothPolyDataFilter which usually requires 100 to 200 smoothing iterations. vtkSmoothPolyDataFilter is also not an approximation to an ideal low-pass filter, which can cause the geometry to shrink as the amount of smoothing increases.

The second ivar is the specification of the PassBand for the windowed sinc filter. By design, the PassBand is specified as a doubleing point number between 0 and 2. Lower PassBand values produce more smoothing. A good default value for the PassBand is 0.1 (for those interested, the PassBand (and frequencies) for PolyData are based on the valence of the vertices, this limits all the frequency modes in a polyhedral mesh to between 0 and 2.)

There are two instance variables that control the generation of error data. If the ivar GenerateErrorScalars is on, then a scalar value indicating the distance of each vertex from its original position is computed. If the ivar GenerateErrorVectors is on, then a vector representing change in position is computed.

Warning: The smoothing operation reduces high frequency information in the geometry of the mesh. With excessive smoothing important details may be lost. Enabling FeatureEdgeSmoothing helps reduce this effect, but cannot entirely eliminate it.

See also: vtkSmoothPolyDataFilter vtkDecimate vtkDecimatePro

Examples:: vtkWindowedSincPolyDataFilter (Examples)

Tests:: vtkWindowedSincPolyDataFilter (Tests)

Definition at line 150 of file vtkWindowedSincPolyDataFilter.h.

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkWindowedSincPolyDataFilter::Superclass

Definition at line 153 of file vtkWindowedSincPolyDataFilter.h.

Constructor & Destructor Documentation

vtkWindowedSincPolyDataFilter::vtkWindowedSincPolyDataFilter ( )

protected

vtkWindowedSincPolyDataFilter::~vtkWindowedSincPolyDataFilter ( )

inlineprotected

Definition at line 238 of file vtkWindowedSincPolyDataFilter.h.

Member Function Documentation

static int vtkWindowedSincPolyDataFilter::IsTypeOf ( const char * type )

static

virtual int vtkWindowedSincPolyDataFilter::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

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

static

virtual vtkObjectBase* vtkWindowedSincPolyDataFilter::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkPolyDataAlgorithm.

vtkWindowedSincPolyDataFilter* vtkWindowedSincPolyDataFilter::NewInstance ( ) const

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

virtual

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkPolyDataAlgorithm.

static vtkWindowedSincPolyDataFilter* vtkWindowedSincPolyDataFilter::New ( )

static

Construct object with number of iterations 20; passband .1; feature edge smoothing turned off; feature angle 45 degrees; edge angle 15 degrees; and boundary smoothing turned on. Error scalars and vectors are not generated (by default). The convergence criterion is 0.0 of the bounding box diagonal.

virtual void vtkWindowedSincPolyDataFilter::SetNumberOfIterations ( int )

virtual

Specify the number of iterations (or degree of the polynomial approximating the windowed sinc function).

virtual int vtkWindowedSincPolyDataFilter::GetNumberOfIterations ( )

virtual

Specify the number of iterations (or degree of the polynomial approximating the windowed sinc function).

virtual void vtkWindowedSincPolyDataFilter::SetPassBand ( double )

virtual

Set the passband value for the windowed sinc filter

virtual double vtkWindowedSincPolyDataFilter::GetPassBand ( )

virtual

Set the passband value for the windowed sinc filter

virtual void vtkWindowedSincPolyDataFilter::SetNormalizeCoordinates ( int )

virtual

Turn on/off coordinate normalization. The positions can be translated and scaled such that they fit within a [-1, 1] prior to the smoothing computation. The default is off. The numerical stability of the solution can be improved by turning normalization on. If normalization is on, the coordinates will be rescaled to the original coordinate system after smoothing has completed.

virtual int vtkWindowedSincPolyDataFilter::GetNormalizeCoordinates ( )

virtual

Turn on/off coordinate normalization. The positions can be translated and scaled such that they fit within a [-1, 1] prior to the smoothing computation. The default is off. The numerical stability of the solution can be improved by turning normalization on. If normalization is on, the coordinates will be rescaled to the original coordinate system after smoothing has completed.

virtual void vtkWindowedSincPolyDataFilter::NormalizeCoordinatesOn ( )

virtual

Turn on/off coordinate normalization. The positions can be translated and scaled such that they fit within a [-1, 1] prior to the smoothing computation. The default is off. The numerical stability of the solution can be improved by turning normalization on. If normalization is on, the coordinates will be rescaled to the original coordinate system after smoothing has completed.

virtual void vtkWindowedSincPolyDataFilter::NormalizeCoordinatesOff ( )

virtual

Turn on/off coordinate normalization. The positions can be translated and scaled such that they fit within a [-1, 1] prior to the smoothing computation. The default is off. The numerical stability of the solution can be improved by turning normalization on. If normalization is on, the coordinates will be rescaled to the original coordinate system after smoothing has completed.

virtual void vtkWindowedSincPolyDataFilter::SetFeatureEdgeSmoothing ( int )

virtual

Turn on/off smoothing along sharp interior edges.

virtual int vtkWindowedSincPolyDataFilter::GetFeatureEdgeSmoothing ( )

virtual

Turn on/off smoothing along sharp interior edges.

virtual void vtkWindowedSincPolyDataFilter::FeatureEdgeSmoothingOn ( )

virtual

Turn on/off smoothing along sharp interior edges.

virtual void vtkWindowedSincPolyDataFilter::FeatureEdgeSmoothingOff ( )

virtual

Turn on/off smoothing along sharp interior edges.

virtual void vtkWindowedSincPolyDataFilter::SetFeatureAngle ( double )

virtual

Specify the feature angle for sharp edge identification.

virtual double vtkWindowedSincPolyDataFilter::GetFeatureAngle ( )

virtual

Specify the feature angle for sharp edge identification.

virtual void vtkWindowedSincPolyDataFilter::SetEdgeAngle ( double )

virtual

Specify the edge angle to control smoothing along edges (either interior or boundary).

virtual double vtkWindowedSincPolyDataFilter::GetEdgeAngle ( )

virtual

Specify the edge angle to control smoothing along edges (either interior or boundary).

virtual void vtkWindowedSincPolyDataFilter::SetBoundarySmoothing ( int )

virtual

Turn on/off the smoothing of vertices on the boundary of the mesh.

virtual int vtkWindowedSincPolyDataFilter::GetBoundarySmoothing ( )

virtual

Turn on/off the smoothing of vertices on the boundary of the mesh.

virtual void vtkWindowedSincPolyDataFilter::BoundarySmoothingOn ( )

virtual

Turn on/off the smoothing of vertices on the boundary of the mesh.

virtual void vtkWindowedSincPolyDataFilter::BoundarySmoothingOff ( )

virtual

Turn on/off the smoothing of vertices on the boundary of the mesh.

virtual void vtkWindowedSincPolyDataFilter::SetNonManifoldSmoothing ( int )

virtual

Smooth non-manifold vertices.

virtual int vtkWindowedSincPolyDataFilter::GetNonManifoldSmoothing ( )

virtual

Smooth non-manifold vertices.

virtual void vtkWindowedSincPolyDataFilter::NonManifoldSmoothingOn ( )

virtual

Smooth non-manifold vertices.

virtual void vtkWindowedSincPolyDataFilter::NonManifoldSmoothingOff ( )

virtual

Smooth non-manifold vertices.

virtual void vtkWindowedSincPolyDataFilter::SetGenerateErrorScalars ( int )

virtual

Turn on/off the generation of scalar distance values.

virtual int vtkWindowedSincPolyDataFilter::GetGenerateErrorScalars ( )

virtual

Turn on/off the generation of scalar distance values.

virtual void vtkWindowedSincPolyDataFilter::GenerateErrorScalarsOn ( )

virtual

Turn on/off the generation of scalar distance values.

virtual void vtkWindowedSincPolyDataFilter::GenerateErrorScalarsOff ( )

virtual

Turn on/off the generation of scalar distance values.

virtual void vtkWindowedSincPolyDataFilter::SetGenerateErrorVectors ( int )

virtual

Turn on/off the generation of error vectors.

virtual int vtkWindowedSincPolyDataFilter::GetGenerateErrorVectors ( )

virtual

Turn on/off the generation of error vectors.

virtual void vtkWindowedSincPolyDataFilter::GenerateErrorVectorsOn ( )

virtual

Turn on/off the generation of error vectors.

virtual void vtkWindowedSincPolyDataFilter::GenerateErrorVectorsOff ( )

virtual

Turn on/off the generation of error vectors.

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

protectedvirtual

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

Member Data Documentation

int vtkWindowedSincPolyDataFilter::NumberOfIterations

protected

Definition at line 242 of file vtkWindowedSincPolyDataFilter.h.

double vtkWindowedSincPolyDataFilter::PassBand

protected

Definition at line 243 of file vtkWindowedSincPolyDataFilter.h.

int vtkWindowedSincPolyDataFilter::FeatureEdgeSmoothing

protected

Definition at line 244 of file vtkWindowedSincPolyDataFilter.h.

double vtkWindowedSincPolyDataFilter::FeatureAngle

protected

Definition at line 245 of file vtkWindowedSincPolyDataFilter.h.

double vtkWindowedSincPolyDataFilter::EdgeAngle

protected

Definition at line 246 of file vtkWindowedSincPolyDataFilter.h.

int vtkWindowedSincPolyDataFilter::BoundarySmoothing

protected

Definition at line 247 of file vtkWindowedSincPolyDataFilter.h.

int vtkWindowedSincPolyDataFilter::NonManifoldSmoothing

protected

Definition at line 248 of file vtkWindowedSincPolyDataFilter.h.

int vtkWindowedSincPolyDataFilter::GenerateErrorScalars

protected

Definition at line 249 of file vtkWindowedSincPolyDataFilter.h.

int vtkWindowedSincPolyDataFilter::GenerateErrorVectors

protected

Definition at line 250 of file vtkWindowedSincPolyDataFilter.h.

int vtkWindowedSincPolyDataFilter::NormalizeCoordinates

protected

Definition at line 251 of file vtkWindowedSincPolyDataFilter.h.

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

dox/Filters/Core/vtkWindowedSincPolyDataFilter.h

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