splat points into a volume with an elliptical, Gaussian distribution More...

#include <vtkCheckerboardSplatter.h>

Inheritance diagram for vtkCheckerboardSplatter:

Collaboration diagram for vtkCheckerboardSplatter:

Public Types
typedef vtkImageAlgorithm	Superclass

Public Types inherited from vtkImageAlgorithm
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.

vtkCheckerboardSplatter *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	ComputeModelBounds (vtkDataSet input, vtkImageData output, vtkInformation *outInfo)
	Compute the size of the sample bounding box automatically from the input data.


void	SetSampleDimensions (int i, int j, int k)
	Set / get the dimensions of the sampling structured point set.

void	SetSampleDimensions (int dim[3])
	Set / get the dimensions of the sampling structured point set.

virtual int *	GetSampleDimensions ()
	Set / get the dimensions of the sampling structured point set.

virtual void	GetSampleDimensions (int data[3])
	Set / get the dimensions of the sampling structured point set.


virtual void	SetModelBounds (double, double, double, double, double, double)
	Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

virtual void	SetModelBounds (double[6])
	Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

virtual double *	GetModelBounds ()
	Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

virtual void	GetModelBounds (double data[6])
	Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.


virtual void	SetFootprint (int)
	Control the footprint size of the splat in terms of propagation across a voxel neighborhood.

virtual int	GetFootprint ()
	Control the footprint size of the splat in terms of propagation across a voxel neighborhood.


virtual void	SetRadius (double)
	Set / get the radius variable that controls the Gaussian exponential function (see equation above).

virtual double	GetRadius ()
	Set / get the radius variable that controls the Gaussian exponential function (see equation above).


virtual void	SetScaleFactor (double)
	Multiply Gaussian splat distribution by this value.

virtual double	GetScaleFactor ()
	Multiply Gaussian splat distribution by this value.


virtual void	SetExponentFactor (double)
	Set / get the sharpness of decay of the splats.

virtual double	GetExponentFactor ()
	Set / get the sharpness of decay of the splats.


virtual void	SetScalarWarping (vtkTypeBool)
	Turn on/off the scaling of splats by scalar value.

virtual vtkTypeBool	GetScalarWarping ()
	Turn on/off the scaling of splats by scalar value.

virtual void	ScalarWarpingOn ()
	Turn on/off the scaling of splats by scalar value.

virtual void	ScalarWarpingOff ()
	Turn on/off the scaling of splats by scalar value.


virtual void	SetNormalWarping (vtkTypeBool)
	Turn on/off the generation of elliptical splats.

virtual vtkTypeBool	GetNormalWarping ()
	Turn on/off the generation of elliptical splats.

virtual void	NormalWarpingOn ()
	Turn on/off the generation of elliptical splats.

virtual void	NormalWarpingOff ()
	Turn on/off the generation of elliptical splats.


virtual void	SetEccentricity (double)
	Control the shape of elliptical splatting.

virtual double	GetEccentricity ()
	Control the shape of elliptical splatting.


virtual void	SetAccumulationMode (int)
	Specify the scalar accumulation mode.

virtual int	GetAccumulationMode ()
	Specify the scalar accumulation mode.

void	SetAccumulationModeToMin ()
	Specify the scalar accumulation mode.

void	SetAccumulationModeToMax ()
	Specify the scalar accumulation mode.

void	SetAccumulationModeToSum ()
	Specify the scalar accumulation mode.

const char *	GetAccumulationModeAsString ()
	Specify the scalar accumulation mode.


virtual void	SetOutputScalarType (int)
	Set what type of scalar data this source should generate.

virtual int	GetOutputScalarType ()
	Set what type of scalar data this source should generate.

void	SetOutputScalarTypeToDouble ()
	Set what type of scalar data this source should generate.

void	SetOutputScalarTypeToFloat ()
	Set what type of scalar data this source should generate.


virtual void	SetCapping (vtkTypeBool)
	Turn on/off the capping of the outer boundary of the volume to a specified cap value.

virtual vtkTypeBool	GetCapping ()
	Turn on/off the capping of the outer boundary of the volume to a specified cap value.

virtual void	CappingOn ()
	Turn on/off the capping of the outer boundary of the volume to a specified cap value.

virtual void	CappingOff ()
	Turn on/off the capping of the outer boundary of the volume to a specified cap value.


virtual void	SetCapValue (double)
	Specify the cap value to use.

virtual double	GetCapValue ()
	Specify the cap value to use.


virtual void	SetNullValue (double)
	Set the Null value for output points not receiving a contribution from the input points.

virtual double	GetNullValue ()
	Set the Null value for output points not receiving a contribution from the input points.


virtual void	SetMaximumDimension (int)
	Set/Get the maximum dimension of the checkerboard (i.e., the number of squares in any of the i, j, or k directions).

virtual int	GetMaximumDimension ()
	Set/Get the maximum dimension of the checkerboard (i.e., the number of squares in any of the i, j, or k directions).


virtual void	SetParallelSplatCrossover (int)
	Set/get the crossover point expressed in footprint size where the splatting operation is parallelized (through vtkSMPTools).

virtual int	GetParallelSplatCrossover ()
	Set/get the crossover point expressed in footprint size where the splatting operation is parallelized (through vtkSMPTools).

Public Member Functions inherited from vtkImageAlgorithm
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkImageAlgorithm *	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
	Process a request from the executive.

vtkImageData *	GetOutput ()
	Get the output data object for a port on this algorithm.

vtkImageData *	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.

vtkDataObject *	GetInput (int port)
	Get a data object for one of the input port connections.

vtkDataObject *	GetInput ()
	Get a data object for one of the input port connections.

vtkImageData *	GetImageDataInput (int port)
	Get a data object for one of the input port connections.

virtual void	AddInputData (vtkDataObject *)
	Assign a data object as input.

virtual 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 vtkCheckerboardSplatter *	SafeDownCast (vtkObjectBase *o)

static vtkCheckerboardSplatter *	New ()
	Construct object with dimensions=(50,50,50); automatic computation of bounds; a Footprint of 2; a Radius of 0; an exponent factor of -5; and normal and scalar warping enabled; and Capping enabled.

Static Public Member Functions inherited from vtkImageAlgorithm
static vtkTypeBool	IsTypeOf (const char *type)

static vtkImageAlgorithm *	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

	vtkCheckerboardSplatter ()

	~vtkCheckerboardSplatter () override=default

int	FillInputPortInformation (int port, vtkInformation *info) override
	These method should be reimplemented by subclasses that have more than a single input or single output.

int	RequestInformation (vtkInformation , vtkInformationVector , vtkInformationVector ) override
	Subclasses can reimplement this method to collect information from their inputs and set information for their outputs.

int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector ) override
	This is called in response to a REQUEST_DATA request from the executive.

Protected Member Functions inherited from vtkImageAlgorithm
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkImageAlgorithm ()

	~vtkImageAlgorithm () override

virtual int	RequestInformation (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
	Subclasses can reimplement this method to collect information from their inputs and set information for their outputs.

virtual int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )
	Subclasses can reimplement this method to translate the update extent requests from each output port into update extent requests for the input connections.

virtual void	CopyInputArrayAttributesToOutput (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
	Convenience method to copy the scalar type and number of components from the input data to the output data.

virtual int	RequestData (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
	This is called in response to a REQUEST_DATA request from the executive.

virtual void	ExecuteDataWithInformation (vtkDataObject output, vtkInformation outInfo)
	This is a convenience method that is implemented in many subclasses instead of RequestData.

virtual void	CopyAttributeData (vtkImageData in, vtkImageData out, vtkInformationVector **inputVector)
	Copy the other point and cell data.

virtual void	ExecuteData (vtkDataObject *output)
	This method is the old style execute method, provided for the sake of backwards compatibility with older filters and readers.

virtual void	Execute ()
	This method is the old style execute method, provided for the sake of backwards compatibility with older filters and readers.

virtual void	AllocateOutputData (vtkImageData out, vtkInformation outInfo, int *uExtent)
	Allocate the output data.

virtual vtkImageData *	AllocateOutputData (vtkDataObject out, vtkInformation outInfo)
	Allocate the output data.

int	FillOutputPortInformation (int port, vtkInformation *info) override
	These method should be reimplemented by subclasses that have more than a single input or single output.

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
int	OutputScalarType

int	SampleDimensions [3]

double	Radius

int	Footprint

double	ExponentFactor

double	ModelBounds [6]

double	Origin [3]

double	Spacing [3]

vtkTypeBool	NormalWarping

double	Eccentricity

vtkTypeBool	ScalarWarping

double	ScaleFactor

vtkTypeBool	Capping

double	CapValue

int	AccumulationMode

double	NullValue

unsigned char	MaximumDimension

int	ParallelSplatCrossover

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

splat points into a volume with an elliptical, Gaussian distribution

vtkCheckerboardSplatter is a filter that injects input points into a structured points (volume) dataset using a multithreaded 8-way checkerboard approach. It produces a scalar field of a specified type. As each point is injected, it "splats" or distributes values to nearby voxels. Data is distributed using an elliptical, Gaussian distribution function. The distribution function is modified using scalar values (expands distribution) or normals (creates ellipsoidal distribution rather than spherical). This algorithm is designed for scalability through multithreading.

In general, the Gaussian distribution function f(x) around a given splat point p is given by

f(x) = ScaleFactor * exp( ExponentFactor*((r/Radius)**2) )

where x is the current voxel sample point; r is the distance |x-p| ExponentFactor <= 0.0, and ScaleFactor can be multiplied by the scalar value of the point p that is currently being splatted.

If point normals are present (and NormalWarping is on), then the splat function becomes elliptical (as compared to the spherical one described by the previous equation). The Gaussian distribution function then becomes:

f(x) = ScaleFactor *
          exp( ExponentFactor*( ((rxy/E)**2 + z**2)/R**2) )

where E is a user-defined eccentricity factor that controls the elliptical shape of the splat; z is the distance of the current voxel sample point along normal N; and rxy is the distance of x in the direction prependicular to N.

This class is typically used to convert point-valued distributions into a volume representation. The volume is then usually iso-surfaced or volume rendered to generate a visualization. It can be used to create surfaces from point distributions, or to create structure (i.e., topology) when none exists.

This class makes use of vtkSMPTools to implement a parallel, shared-memory implementation. Hence performance will be significantly improved if VTK is built with VTK_SMP_IMPLEMENTATION_TYPE set to something other than "Sequential" (typically TBB). For example, on a standard laptop with four threads it is common to see a >10x speedup as compared to the serial version of vtkGaussianSplatter.

In summary, the algorithm operates by dividing the volume into a 3D checkerboard, where the squares of the checkerboard overlay voxels in the volume. The checkerboard overlay is designed as a function of the splat footprint, so that when splatting occurs in a group (or color) of checkerboard squares, the splat operation will not cause write contention as the splatting proceeds in parallel. There are eight colors in this checkerboard (like an octree) and parallel splatting occurs simultaneously in one of the eight colors (e.g., octants). A single splat operation (across the given 3D footprint) may also be parallelized if the splat is large enough.

Warning: The input to this filter is of type vtkPointSet. Currently only real types (e.g., float, double) are supported as input, but this could easily be extended to other types. The output type is limited to real types as well.; Some voxels may never receive a contribution during the splatting process. The final value of these points can be specified with the "NullValue" instance variable. Note that NullValue is also the initial value of the output voxel values and will affect the accumulation process.; While this class is very similar to vtkGaussianSplatter, it does produce slightly different output in most cases (due to the way the footprint is computed).

See also: vtkShepardMethod vtkGaussianSplatter

Definition at line 108 of file vtkCheckerboardSplatter.h.

Member Typedef Documentation

◆ Superclass

typedef vtkImageAlgorithm vtkCheckerboardSplatter::Superclass

Definition at line 111 of file vtkCheckerboardSplatter.h.

Constructor & Destructor Documentation

◆ vtkCheckerboardSplatter()

vtkCheckerboardSplatter::vtkCheckerboardSplatter ( )

protected

◆ ~vtkCheckerboardSplatter()

vtkCheckerboardSplatter::~vtkCheckerboardSplatter ( )

overrideprotecteddefault

Member Function Documentation

◆ IsTypeOf()

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

static

◆ IsA()

virtual vtkTypeBool vtkCheckerboardSplatter::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 vtkImageAlgorithm.

◆ SafeDownCast()

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

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkCheckerboardSplatter::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkImageAlgorithm.

◆ NewInstance()

vtkCheckerboardSplatter * vtkCheckerboardSplatter::NewInstance ( ) const

◆ PrintSelf()

void vtkCheckerboardSplatter::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 vtkImageAlgorithm.

◆ New()

static vtkCheckerboardSplatter * vtkCheckerboardSplatter::New ( )

static

Construct object with dimensions=(50,50,50); automatic computation of bounds; a Footprint of 2; a Radius of 0; an exponent factor of -5; and normal and scalar warping enabled; and Capping enabled.

◆ SetSampleDimensions() [1/2]

void vtkCheckerboardSplatter::SetSampleDimensions	(	int	i,
		int	j,
		int	k
	)

Set / get the dimensions of the sampling structured point set.

Higher values produce better results but may be much slower.

◆ SetSampleDimensions() [2/2]

void vtkCheckerboardSplatter::SetSampleDimensions ( int dim[3] )

Set / get the dimensions of the sampling structured point set.

Higher values produce better results but may be much slower.

◆ GetSampleDimensions() [1/2]

virtual int * vtkCheckerboardSplatter::GetSampleDimensions ( )

virtual

Set / get the dimensions of the sampling structured point set.

Higher values produce better results but may be much slower.

◆ GetSampleDimensions() [2/2]

virtual void vtkCheckerboardSplatter::GetSampleDimensions ( int data[3] )

virtual

Set / get the dimensions of the sampling structured point set.

Higher values produce better results but may be much slower.

◆ SetModelBounds() [1/2]

virtual void vtkCheckerboardSplatter::SetModelBounds	(	double	,
		double	,
		double	,
		double	,
		double	,
		double
	)

virtual

Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.

◆ SetModelBounds() [2/2]

virtual void vtkCheckerboardSplatter::SetModelBounds ( double [6] )

virtual

Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.

◆ GetModelBounds() [1/2]

virtual double * vtkCheckerboardSplatter::GetModelBounds ( )

virtual

Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.

◆ GetModelBounds() [2/2]

virtual void vtkCheckerboardSplatter::GetModelBounds ( double data[6] )

virtual

Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed.

If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.

◆ SetFootprint()

virtual void vtkCheckerboardSplatter::SetFootprint ( int )

virtual

Control the footprint size of the splat in terms of propagation across a voxel neighborhood.

The Footprint value simply indicates the number of neighboring voxels in the i-j-k directions to extend the splat. A value of zero means that only the voxel containing the splat point is affected. A value of one means the immediate neighbors touching the affected voxel are affected as well. Larger numbers increase the splat footprint and significantly increase processing time. Note that the footprint is always 3D rectangular.

◆ GetFootprint()

virtual int vtkCheckerboardSplatter::GetFootprint ( )

virtual

Control the footprint size of the splat in terms of propagation across a voxel neighborhood.

The Footprint value simply indicates the number of neighboring voxels in the i-j-k directions to extend the splat. A value of zero means that only the voxel containing the splat point is affected. A value of one means the immediate neighbors touching the affected voxel are affected as well. Larger numbers increase the splat footprint and significantly increase processing time. Note that the footprint is always 3D rectangular.

◆ SetRadius()

virtual void vtkCheckerboardSplatter::SetRadius ( double )

virtual

Set / get the radius variable that controls the Gaussian exponential function (see equation above).

If set to zero, it is automatically set to the radius of the circumsphere bounding a single voxel. (By default, the Radius is set to zero and is automatically computed.)

◆ GetRadius()

virtual double vtkCheckerboardSplatter::GetRadius ( )

virtual

Set / get the radius variable that controls the Gaussian exponential function (see equation above).

If set to zero, it is automatically set to the radius of the circumsphere bounding a single voxel. (By default, the Radius is set to zero and is automatically computed.)

◆ SetScaleFactor()

virtual void vtkCheckerboardSplatter::SetScaleFactor ( double )

virtual

Multiply Gaussian splat distribution by this value.

If ScalarWarping is on, then the Scalar value will be multiplied by the ScaleFactor times the Gaussian function.

◆ GetScaleFactor()

virtual double vtkCheckerboardSplatter::GetScaleFactor ( )

virtual

Multiply Gaussian splat distribution by this value.

If ScalarWarping is on, then the Scalar value will be multiplied by the ScaleFactor times the Gaussian function.

◆ SetExponentFactor()

virtual void vtkCheckerboardSplatter::SetExponentFactor ( double )

virtual

Set / get the sharpness of decay of the splats.

This is the exponent constant in the Gaussian equation described above. Normally this is a negative value.

◆ GetExponentFactor()

virtual double vtkCheckerboardSplatter::GetExponentFactor ( )

virtual

Set / get the sharpness of decay of the splats.

This is the exponent constant in the Gaussian equation described above. Normally this is a negative value.

◆ SetScalarWarping()

virtual void vtkCheckerboardSplatter::SetScalarWarping ( vtkTypeBool )

virtual

Turn on/off the scaling of splats by scalar value.

◆ GetScalarWarping()

virtual vtkTypeBool vtkCheckerboardSplatter::GetScalarWarping ( )

virtual

Turn on/off the scaling of splats by scalar value.

◆ ScalarWarpingOn()

virtual void vtkCheckerboardSplatter::ScalarWarpingOn ( )

virtual

Turn on/off the scaling of splats by scalar value.

◆ ScalarWarpingOff()

virtual void vtkCheckerboardSplatter::ScalarWarpingOff ( )

virtual

Turn on/off the scaling of splats by scalar value.

◆ SetNormalWarping()

virtual void vtkCheckerboardSplatter::SetNormalWarping ( vtkTypeBool )

virtual

Turn on/off the generation of elliptical splats.

If normal warping is on, then the input normals affect the distribution of the splat. This boolean is used in combination with the Eccentricity ivar.

◆ GetNormalWarping()

virtual vtkTypeBool vtkCheckerboardSplatter::GetNormalWarping ( )

virtual

Turn on/off the generation of elliptical splats.

If normal warping is on, then the input normals affect the distribution of the splat. This boolean is used in combination with the Eccentricity ivar.

◆ NormalWarpingOn()

virtual void vtkCheckerboardSplatter::NormalWarpingOn ( )

virtual

Turn on/off the generation of elliptical splats.

If normal warping is on, then the input normals affect the distribution of the splat. This boolean is used in combination with the Eccentricity ivar.

◆ NormalWarpingOff()

virtual void vtkCheckerboardSplatter::NormalWarpingOff ( )

virtual

Turn on/off the generation of elliptical splats.

If normal warping is on, then the input normals affect the distribution of the splat. This boolean is used in combination with the Eccentricity ivar.

◆ SetEccentricity()

virtual void vtkCheckerboardSplatter::SetEccentricity ( double )

virtual

Control the shape of elliptical splatting.

Eccentricity is the ratio of the major axis (aligned along normal) to the minor (axes) aligned along other two axes. So Eccentricity > 1 creates needles with the long axis in the direction of the normal; Eccentricity<1 creates pancakes perpendicular to the normal vector.

◆ GetEccentricity()

virtual double vtkCheckerboardSplatter::GetEccentricity ( )

virtual

Control the shape of elliptical splatting.

Eccentricity is the ratio of the major axis (aligned along normal) to the minor (axes) aligned along other two axes. So Eccentricity > 1 creates needles with the long axis in the direction of the normal; Eccentricity<1 creates pancakes perpendicular to the normal vector.