vtkSmoothPolyDataFilter Class Reference

adjust point positions using Laplacian smoothing More...

#include <vtkSmoothPolyDataFilter.h>

Inheritance diagram for vtkSmoothPolyDataFilter:

Collaboration diagram for vtkSmoothPolyDataFilter:

Public Types
typedef vtkPolyDataAlgorithm	Superclass
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
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkSmoothPolyDataFilter *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
virtual void	SetConvergence (double)
	Specify a convergence criterion for the iteration process.
virtual double	GetConvergence ()
	Specify a convergence criterion for the iteration process.
virtual void	SetNumberOfIterations (int)
	Specify the number of iterations for Laplacian smoothing,.
virtual int	GetNumberOfIterations ()
	Specify the number of iterations for Laplacian smoothing,.
virtual void	SetRelaxationFactor (double)
	Specify the relaxation factor for Laplacian smoothing.
virtual double	GetRelaxationFactor ()
	Specify the relaxation factor for Laplacian smoothing.
virtual void	SetFeatureEdgeSmoothing (vtkTypeBool)
	Turn on/off smoothing along sharp interior edges.
virtual vtkTypeBool	GetFeatureEdgeSmoothing ()
	Turn on/off smoothing along sharp interior edges.
virtual void	FeatureEdgeSmoothingOn ()
	Turn on/off smoothing along sharp interior edges.
virtual void	FeatureEdgeSmoothingOff ()
	Turn on/off smoothing along sharp interior edges.
virtual void	SetFeatureAngle (double)
	Specify the feature angle for sharp edge identification.
virtual double	GetFeatureAngle ()
	Specify the feature angle for sharp edge identification.
virtual void	SetEdgeAngle (double)
	Specify the edge angle to control smoothing along edges (either interior or boundary).
virtual double	GetEdgeAngle ()
	Specify the edge angle to control smoothing along edges (either interior or boundary).
virtual void	SetBoundarySmoothing (vtkTypeBool)
	Turn on/off the smoothing of vertices on the boundary of the mesh.
virtual vtkTypeBool	GetBoundarySmoothing ()
	Turn on/off the smoothing of vertices on the boundary of the mesh.
virtual void	BoundarySmoothingOn ()
	Turn on/off the smoothing of vertices on the boundary of the mesh.
virtual void	BoundarySmoothingOff ()
	Turn on/off the smoothing of vertices on the boundary of the mesh.
virtual void	SetGenerateErrorScalars (vtkTypeBool)
	Turn on/off the generation of scalar distance values.
virtual vtkTypeBool	GetGenerateErrorScalars ()
	Turn on/off the generation of scalar distance values.
virtual void	GenerateErrorScalarsOn ()
	Turn on/off the generation of scalar distance values.
virtual void	GenerateErrorScalarsOff ()
	Turn on/off the generation of scalar distance values.
virtual void	SetGenerateErrorVectors (vtkTypeBool)
	Turn on/off the generation of error vectors.
virtual vtkTypeBool	GetGenerateErrorVectors ()
	Turn on/off the generation of error vectors.
virtual void	GenerateErrorVectorsOn ()
	Turn on/off the generation of error vectors.
virtual void	GenerateErrorVectorsOff ()
	Turn on/off the generation of error vectors.
void	SetSourceData (vtkPolyData *source)
	Specify the source object which is used to constrain smoothing.
vtkPolyData *	GetSource ()
	Specify the source object which is used to constrain smoothing.
virtual void	SetOutputPointsPrecision (int)
	Set/get the desired precision for the output types.
virtual int	GetOutputPointsPrecision ()
	Set/get the desired precision for the output types.
Public Member Functions inherited from vtkPolyDataAlgorithm
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkPolyDataAlgorithm *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
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
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.
vtkAlgorithm *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
int	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.
virtual vtkTypeBool	ProcessRequest (vtkInformation *request, vtkInformationVector **inInfo, vtkInformationVector *outInfo)
	Upstream/Downstream requests form the generalized interface through which executives invoke a algorithm's functionality.
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	SetProgress (double)
	SetProgress is deprecated.
void	UpdateProgress (double amount)
	Update the progress of the process object.
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
	String based versions of SetInputArrayToProcess().
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.
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.
void	Register (vtkObjectBase *o) override
	Participate in garbage collection.
void	UnRegister (vtkObjectBase *o) 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	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.
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, int fieldAttributeType)
	Set the input data arrays that this algorithm will process.
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
	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 void	Update (int port)
	Bring this algorithm's outputs up-to-date.
virtual void	Update ()
	Bring this algorithm's outputs up-to-date.
virtual void	SetReleaseDataFlag (int)
	Turn release data flag on or off for all output ports.
virtual int	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.
Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)
virtual void	DebugOn ()
	Turn debugging output on.
virtual void	DebugOff ()
	Turn debugging output off.
bool	GetDebug ()
	Get the value of the debug flag.
void	SetDebug (bool debugFlag)
	Set the value of the debug flag.
virtual void	Modified ()
	Update the modification time for this object.
virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.
void	RemoveObserver (unsigned long tag)
void	RemoveObservers (unsigned long event)
void	RemoveObservers (const char *event)
void	RemoveAllObservers ()
vtkTypeBool	HasObserver (unsigned long event)
vtkTypeBool	HasObserver (const char *event)
int	InvokeEvent (unsigned long event)
int	InvokeEvent (const char *event)
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.
int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.
int	InvokeEvent (const char *event, void *callData)
	This method invokes an event and return whether the event was aborted or not.
Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.
virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.
virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
virtual void	Delete ()
	Delete a VTK object.
virtual void	FastDelete ()
	Delete a reference to this object.
void	InitializeObjectBase ()
void	Print (ostream &os)
	Print an object to an ostream.
virtual 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.

Static Public Member Functions
static vtkTypeBool	IsTypeOf (const char *type)
static vtkSmoothPolyDataFilter *	SafeDownCast (vtkObjectBase *o)
static vtkSmoothPolyDataFilter *	New ()
	Construct object with number of iterations 20; relaxation factor .01; feature edge smoothing turned off; feature angle 45 degrees; edge angle 15 degrees; and boundary smoothing turned on.
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 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 (int 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 int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.
Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.
static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.
static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkSmoothPolyDataFilter ()
	~vtkSmoothPolyDataFilter () override=default
int	RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	This is called by the superclass.
int	FillInputPortInformation (int port, vtkInformation *info) override
	Fill the input port information objects for this algorithm.
Protected Member Functions inherited from vtkPolyDataAlgorithm
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkPolyDataAlgorithm ()
	~vtkPolyDataAlgorithm () override
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
	This is called by the superclass.
virtual int	RequestUpdateExtent (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.
int	FillInputPortInformation (int port, vtkInformation *info) override
	Fill the input port information objects for this algorithm.
Protected Member Functions inherited from vtkAlgorithm
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkAlgorithm ()
	~vtkAlgorithm () override
virtual int	FillInputPortInformation (int port, vtkInformation *info)
	Fill the input port information objects for this algorithm.
virtual int	FillOutputPortInformation (int port, vtkInformation *info)
	Fill the output port information objects for this algorithm.
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 assocition 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.
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 ()
virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)
virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)
virtual void	ReportReferences (vtkGarbageCollector *)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
double	Convergence
int	NumberOfIterations
double	RelaxationFactor
vtkTypeBool	FeatureEdgeSmoothing
double	FeatureAngle
double	EdgeAngle
vtkTypeBool	BoundarySmoothing
vtkTypeBool	GenerateErrorScalars
vtkTypeBool	GenerateErrorVectors
int	OutputPointsPrecision
vtkSmoothPoints *	SmoothPoints
Protected Attributes inherited from vtkAlgorithm
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
Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount
vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
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 ()
Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

adjust point positions using Laplacian smoothing

vtkSmoothPolyDataFilter is a filter that adjusts point coordinates using Laplacian smoothing. The effect is to "relax" the mesh, making the cells better shaped and the vertices more evenly distributed. Note that this filter operates on 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 according to an average of the connected vertices. (A relaxation factor is available to control the amount of displacement of v). The process repeats for each vertex. This pass over the list of vertices is a single iteration. Many iterations (generally around 20 or so) are repeated until the desired result is obtained.

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 (i.e., average of connected vertex coordinates). 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 is a cap on the maximum number of smoothing passes. The Convergence ivar is a limit on the maximum point motion. If the maximum motion during an iteration is less than Convergence, then the smoothing process terminates. (Convergence is expressed as a fraction of the diagonal of the bounding box.)

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.

Optionally you can further control the smoothing process by defining a second input: the Source. If defined, the input mesh is constrained to lie on the surface defined by the Source ivar.

Warning

The Laplacian operation reduces high frequency information in the geometry of the mesh. With excessive smoothing important details may be lost, and the surface may shrink towards the centroid. Enabling FeatureEdgeSmoothing helps reduce this effect, but cannot entirely eliminate it. You may also wish to try vtkWindowedSincPolyDataFilter. It does a better job of minimizing shrinkage.

See also

vtkWindowedSincPolyDataFilter vtkDecimate vtkDecimatePro

Online Examples:

ConvexHullShrinkWrap

PointInsideObject2

SmoothPolyDataFilter

Definition at line 140 of file vtkSmoothPolyDataFilter.h.

Member Typedef Documentation

Superclass

typedef vtkPolyDataAlgorithm vtkSmoothPolyDataFilter::Superclass

Definition at line 143 of file vtkSmoothPolyDataFilter.h.

Constructor & Destructor Documentation

vtkSmoothPolyDataFilter()

vtkSmoothPolyDataFilter::vtkSmoothPolyDataFilter ( )

protected

~vtkSmoothPolyDataFilter()

vtkSmoothPolyDataFilter::~vtkSmoothPolyDataFilter ( )

overrideprotecteddefault

Member Function Documentation

IsTypeOf()

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

static

IsA()

virtual vtkTypeBool vtkSmoothPolyDataFilter::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.

SafeDownCast()

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

static

NewInstanceInternal()

virtual vtkObjectBase * vtkSmoothPolyDataFilter::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkPolyDataAlgorithm.

NewInstance()

vtkSmoothPolyDataFilter * vtkSmoothPolyDataFilter::NewInstance

(

)

const

PrintSelf()

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

overridevirtual

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

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

Reimplemented from vtkPolyDataAlgorithm.

New()

static vtkSmoothPolyDataFilter * vtkSmoothPolyDataFilter::New ( )

static

Construct object with number of iterations 20; relaxation factor .01; 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.

SetConvergence()

virtual void vtkSmoothPolyDataFilter::SetConvergence ( double  )

virtual

Specify a convergence criterion for the iteration process.

Smaller numbers result in more smoothing iterations.

GetConvergence()

virtual double vtkSmoothPolyDataFilter::GetConvergence ( )

virtual

Specify a convergence criterion for the iteration process.

Smaller numbers result in more smoothing iterations.

SetNumberOfIterations()

virtual void vtkSmoothPolyDataFilter::SetNumberOfIterations ( int  )

virtual

Specify the number of iterations for Laplacian smoothing,.

GetNumberOfIterations()

virtual int vtkSmoothPolyDataFilter::GetNumberOfIterations ( )

virtual

Specify the number of iterations for Laplacian smoothing,.

SetRelaxationFactor()

virtual void vtkSmoothPolyDataFilter::SetRelaxationFactor ( double  )

virtual

Specify the relaxation factor for Laplacian smoothing.

As in all iterative methods, the stability of the process is sensitive to this parameter. In general, small relaxation factors and large numbers of iterations are more stable than larger relaxation factors and smaller numbers of iterations.

GetRelaxationFactor()

virtual double vtkSmoothPolyDataFilter::GetRelaxationFactor ( )

virtual

Specify the relaxation factor for Laplacian smoothing.

As in all iterative methods, the stability of the process is sensitive to this parameter. In general, small relaxation factors and large numbers of iterations are more stable than larger relaxation factors and smaller numbers of iterations.

SetFeatureEdgeSmoothing()

virtual void vtkSmoothPolyDataFilter::SetFeatureEdgeSmoothing ( vtkTypeBool  )

virtual

Turn on/off smoothing along sharp interior edges.

GetFeatureEdgeSmoothing()

virtual vtkTypeBool vtkSmoothPolyDataFilter::GetFeatureEdgeSmoothing ( )

virtual

Turn on/off smoothing along sharp interior edges.

FeatureEdgeSmoothingOn()

virtual void vtkSmoothPolyDataFilter::FeatureEdgeSmoothingOn ( )

virtual

Turn on/off smoothing along sharp interior edges.

FeatureEdgeSmoothingOff()

virtual void vtkSmoothPolyDataFilter::FeatureEdgeSmoothingOff ( )

virtual

Turn on/off smoothing along sharp interior edges.

SetFeatureAngle()

virtual void vtkSmoothPolyDataFilter::SetFeatureAngle ( double  )

virtual

Specify the feature angle for sharp edge identification.

GetFeatureAngle()

virtual double vtkSmoothPolyDataFilter::GetFeatureAngle ( )

virtual

Specify the feature angle for sharp edge identification.

SetEdgeAngle()

virtual void vtkSmoothPolyDataFilter::SetEdgeAngle ( double  )

virtual

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

GetEdgeAngle()

virtual double vtkSmoothPolyDataFilter::GetEdgeAngle ( )

virtual

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

SetBoundarySmoothing()

virtual void vtkSmoothPolyDataFilter::SetBoundarySmoothing ( vtkTypeBool  )

virtual

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

GetBoundarySmoothing()

virtual vtkTypeBool vtkSmoothPolyDataFilter::GetBoundarySmoothing ( )

virtual

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

BoundarySmoothingOn()

virtual void vtkSmoothPolyDataFilter::BoundarySmoothingOn ( )

virtual

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

BoundarySmoothingOff()

virtual void vtkSmoothPolyDataFilter::BoundarySmoothingOff ( )

virtual

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

SetGenerateErrorScalars()

virtual void vtkSmoothPolyDataFilter::SetGenerateErrorScalars ( vtkTypeBool  )

virtual

Turn on/off the generation of scalar distance values.

GetGenerateErrorScalars()

virtual vtkTypeBool vtkSmoothPolyDataFilter::GetGenerateErrorScalars ( )

virtual

Turn on/off the generation of scalar distance values.

GenerateErrorScalarsOn()

virtual void vtkSmoothPolyDataFilter::GenerateErrorScalarsOn ( )

virtual

Turn on/off the generation of scalar distance values.

GenerateErrorScalarsOff()

virtual void vtkSmoothPolyDataFilter::GenerateErrorScalarsOff ( )

virtual

Turn on/off the generation of scalar distance values.

SetGenerateErrorVectors()

virtual void vtkSmoothPolyDataFilter::SetGenerateErrorVectors ( vtkTypeBool  )

virtual

Turn on/off the generation of error vectors.

GetGenerateErrorVectors()

virtual vtkTypeBool vtkSmoothPolyDataFilter::GetGenerateErrorVectors ( )

virtual

Turn on/off the generation of error vectors.

GenerateErrorVectorsOn()

virtual void vtkSmoothPolyDataFilter::GenerateErrorVectorsOn ( )

virtual

Turn on/off the generation of error vectors.

GenerateErrorVectorsOff()

virtual void vtkSmoothPolyDataFilter::GenerateErrorVectorsOff ( )

virtual

Turn on/off the generation of error vectors.

SetSourceData()

void vtkSmoothPolyDataFilter::SetSourceData

(

vtkPolyData *

source

)

Specify the source object which is used to constrain smoothing.

The source defines a surface that the input (as it is smoothed) is constrained to lie upon.

GetSource()

vtkPolyData * vtkSmoothPolyDataFilter::GetSource

(

)

Specify the source object which is used to constrain smoothing.

The source defines a surface that the input (as it is smoothed) is constrained to lie upon.

SetOutputPointsPrecision()

virtual void vtkSmoothPolyDataFilter::SetOutputPointsPrecision ( int  )

virtual

Set/get the desired precision for the output types.

See the documentation for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of the available precision settings.

GetOutputPointsPrecision()

virtual int vtkSmoothPolyDataFilter::GetOutputPointsPrecision ( )

virtual

Set/get the desired precision for the output types.

See the documentation for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of the available precision settings.

RequestData()

int vtkSmoothPolyDataFilter::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 vtkSmoothPolyDataFilter::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.

Member Data Documentation

Convergence

double vtkSmoothPolyDataFilter::Convergence

protected

Definition at line 264 of file vtkSmoothPolyDataFilter.h.

NumberOfIterations

int vtkSmoothPolyDataFilter::NumberOfIterations

protected

Definition at line 265 of file vtkSmoothPolyDataFilter.h.

RelaxationFactor

double vtkSmoothPolyDataFilter::RelaxationFactor

protected

Definition at line 266 of file vtkSmoothPolyDataFilter.h.

FeatureEdgeSmoothing

vtkTypeBool vtkSmoothPolyDataFilter::FeatureEdgeSmoothing

protected

Definition at line 267 of file vtkSmoothPolyDataFilter.h.

FeatureAngle

double vtkSmoothPolyDataFilter::FeatureAngle

protected

Definition at line 268 of file vtkSmoothPolyDataFilter.h.

EdgeAngle

double vtkSmoothPolyDataFilter::EdgeAngle

protected

Definition at line 269 of file vtkSmoothPolyDataFilter.h.

BoundarySmoothing

vtkTypeBool vtkSmoothPolyDataFilter::BoundarySmoothing

protected

Definition at line 270 of file vtkSmoothPolyDataFilter.h.

GenerateErrorScalars

vtkTypeBool vtkSmoothPolyDataFilter::GenerateErrorScalars

protected

Definition at line 271 of file vtkSmoothPolyDataFilter.h.

GenerateErrorVectors

vtkTypeBool vtkSmoothPolyDataFilter::GenerateErrorVectors

protected

Definition at line 272 of file vtkSmoothPolyDataFilter.h.

OutputPointsPrecision

int vtkSmoothPolyDataFilter::OutputPointsPrecision

protected

Definition at line 273 of file vtkSmoothPolyDataFilter.h.

SmoothPoints

vtkSmoothPoints* vtkSmoothPolyDataFilter::SmoothPoints

protected

Definition at line 275 of file vtkSmoothPolyDataFilter.h.

---

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

• Filters/Core/vtkSmoothPolyDataFilter.h