helper for extracting/sub-sampling structured datasets. More...

#include <vtkExtractStructuredGridHelper.h>

Inheritance diagram for vtkExtractStructuredGridHelper:

Collaboration diagram for vtkExtractStructuredGridHelper:

Public Types
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. More...

vtkExtractStructuredGridHelper *	NewInstance () const

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

virtual int *	GetOutputWholeExtent ()

virtual void	GetOutputWholeExtent (int &, int &, int &, int &, int &, int &)

virtual void	GetOutputWholeExtent (int[6])

void	Initialize (int voi[6], int wholeExt[6], int sampleRate[3], bool includeBoundary)
	Initializes the index map. More...

bool	IsValid () const
	Returns true if the helper is properly initialized. More...

int	GetSize (const int dim)
	Returns the size along a given dimension. More...

int	GetMappedIndex (int dim, int outIdx)
	Given a dimension and output index, return the corresponding extent index. More...

int	GetMappedIndexFromExtentValue (int dim, int outExtVal)
	Given a dimension and output extent value, return the corresponding input extent index. More...

int	GetMappedExtentValue (int dim, int outExtVal)
	Given a dimension and output extent value, return the corresponding input extent value. More...

int	GetMappedExtentValueFromIndex (int dim, int outIdx)
	Given a dimension and output extent index, return the corresponding input extent value. More...

void	ComputeBeginAndEnd (int inExt[6], int voi[6], int begin[3], int end[3])
	Returns the begin & end extent that intersects with the VOI. More...

void	CopyPointsAndPointData (int inExt[6], int outExt[6], vtkPointData pd, vtkPoints inpnts, vtkPointData outPD, vtkPoints outpnts)
	Copies the points & point data to the output. More...

void	CopyCellData (int inExt[6], int outExt[6], vtkCellData cd, vtkCellData outCD)
	Copies the cell data to the output. More...

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

bool	GetDebug ()
	Get the value of the debug flag. More...

void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...

virtual void	Modified ()
	Update the modification time for this object. More...

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time. More...

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

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. More...

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not. More...

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...

virtual void	Delete ()
	Delete a VTK object. More...

virtual void	FastDelete ()
	Delete a reference to this object. More...

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream. More...

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object). More...

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object). More...

int	GetReferenceCount ()
	Return the current reference count of this object. More...

void	SetReferenceCount (int)
	Sets the reference count. More...

void	PrintRevisions (ostream &)
	Legacy. More...

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

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

Static Public Member Functions
static vtkExtractStructuredGridHelper *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkExtractStructuredGridHelper *	SafeDownCast (vtkObjectBase *o)

static void	GetPartitionedVOI (const int globalVOI[6], const int partitionedExtent[6], const int sampleRate[3], bool includeBoundary, int partitionedVOI[6])
	Calculate the VOI for a partitioned structured dataset. More...

static void	GetPartitionedOutputExtent (const int globalVOI[6], const int partitionedVOI[6], const int outputWholeExtent[6], const int sampleRate[3], bool includeBoundary, int partitionedOutputExtent[6])
	Calculate the partitioned output extent for a partitioned structured dataset. More...

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. More...

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkExtractStructuredGridHelper ()

	~vtkExtractStructuredGridHelper () override

void	Invalidate ()
	Invalidates the output extent. More...

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events. More...

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events. More...

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
int	VOI [6]

int	InputWholeExtent [6]

int	SampleRate [3]

bool	IncludeBoundary

int	OutputWholeExtent [6]

vtk::detail::vtkIndexMap *	IndexMap

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

helper for extracting/sub-sampling structured datasets.

vtkExtractStructuredGridHelper provides some common functionality that is used by filters that extract and sub-sample structured data. Specifically, it provides functionality for calculating the mapping from the output extent of each process to the input extent.

See also: vtkExtractGrid vtkExtractVOI vtkExtractRectilinearGrid

Definition at line 51 of file vtkExtractStructuredGridHelper.h.

Member Typedef Documentation

typedef vtkObject vtkExtractStructuredGridHelper::Superclass

Definition at line 56 of file vtkExtractStructuredGridHelper.h.

Constructor & Destructor Documentation

vtkExtractStructuredGridHelper::vtkExtractStructuredGridHelper ( )

protected

vtkExtractStructuredGridHelper::~vtkExtractStructuredGridHelper ( )

overrideprotected

Member Function Documentation

static vtkExtractStructuredGridHelper* vtkExtractStructuredGridHelper::New ( )

static

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

static

virtual vtkTypeBool vtkExtractStructuredGridHelper::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 vtkObjectBase.

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

static

virtual vtkObjectBase* vtkExtractStructuredGridHelper::NewInstanceInternal ( ) const

protectedvirtual

vtkExtractStructuredGridHelper* vtkExtractStructuredGridHelper::NewInstance ( ) const

void vtkExtractStructuredGridHelper::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 vtkObject.

virtual int* vtkExtractStructuredGridHelper::GetOutputWholeExtent ( )

virtual

virtual void vtkExtractStructuredGridHelper::GetOutputWholeExtent	(	int &	,
		int &	,
		int &	,
		int &	,
		int &	,
		int &
	)

virtual

virtual void vtkExtractStructuredGridHelper::GetOutputWholeExtent ( int [6] )

virtual

void vtkExtractStructuredGridHelper::Initialize	(	int	voi[6],
		int	wholeExt[6],
		int	sampleRate[3],
		bool	includeBoundary
	)

Initializes the index map.

Parameters

voi	the extent of the volume of interest
wholeExt	the whole extent of the domain
smapleRate	the sampling rate
includeBoundary	indicates whether to include the boundary or not.

bool vtkExtractStructuredGridHelper::IsValid ( ) const

Returns true if the helper is properly initialized.

int vtkExtractStructuredGridHelper::GetSize ( const int dim )

Returns the size along a given dimension.

Parameters

dim	the dimension in query

Precondition: dim >= 0 && dim < 3

int vtkExtractStructuredGridHelper::GetMappedIndex	(	int	dim,
		int	outIdx
	)

Given a dimension and output index, return the corresponding extent index.

This method should be used to convert array indices, such as the coordinate arrays for rectilinear grids.

Parameters

dim	the data dimension
outIdx	The output index along the given dimension.

Precondition: dim >= 0 && dim < 3; outIdx >= 0 && outIdx < this->GetSize( dim )

Returns: The input extent index along the given dimension.

See also: GetMappedExtentValue; GetMappedExtentValueFromIndex

int vtkExtractStructuredGridHelper::GetMappedIndexFromExtentValue	(	int	dim,
		int	outExtVal
	)

Given a dimension and output extent value, return the corresponding input extent index.

This method should be used to compute extent indices from extent values.

Parameters

dim	the data dimension
outExtVal	The output extent value along the given dimension.

Precondition: dim >= 0 && dim < 3; outExtVal >= this->GetOutputWholeExtent()[2*dim] && outExtVal <= this->GetOutputWholeExtent()[2*dim+1]

Returns: The input extent index along the given dimension.

See also: GetMappedExtentValue; GetMappedExtentValueFromIndex

int vtkExtractStructuredGridHelper::GetMappedExtentValue	(	int	dim,
		int	outExtVal
	)

Given a dimension and output extent value, return the corresponding input extent value.

This method should be used to convert extent values.

Parameters

dim	the data dimension.
outExtVal	The output extent value along the given dimension.

Precondition: dim >= 0 && dim < 3; outExtVal >= this->GetOutputWholeExtent()[2*dim] && outExtVal <= this->GetOutputWholeExtent()[2*dim+1]

Returns: The input extent value along the given dimension.

See also: GetMappedIndex; GetMappedExtentValueFromIndex

int vtkExtractStructuredGridHelper::GetMappedExtentValueFromIndex	(	int	dim,
		int	outIdx
	)

Given a dimension and output extent index, return the corresponding input extent value.

This method should be used to compute extent values from extent indices.

Parameters

dim	the data dimension.
outIdx	The output index along the given dimension.

Precondition: dim >= 0 && dim < 3; outIdx >= 0 && outIdx < this->GetSize( dim )

Returns: The input extent value along the given dimension.

See also: GetMappedIndex; GetMappedExtentValue

void vtkExtractStructuredGridHelper::ComputeBeginAndEnd	(	int	inExt[6],
		int	voi[6],
		int	begin[3],
		int	end[3]
	)

Returns the begin & end extent that intersects with the VOI.

Parameters

inExt	the input extent
voi	the volume of interest
begin	the begin extent
end	the end extent

void vtkExtractStructuredGridHelper::CopyPointsAndPointData	(	int	inExt[6],
		int	outExt[6],
		vtkPointData *	pd,
		vtkPoints *	inpnts,
		vtkPointData *	outPD,
		vtkPoints *	outpnts
	)

Copies the points & point data to the output.

Parameters

inExt	the input grid extent.
outExt	the output grid extent.
pd	pointer to the input point data.
inpnts	pointer to the input points, or nullptr if uniform grid.
outPD	point to the output point data.
outpnts	pointer to the output points, or nullptr if uniform grid.

Precondition: pd != nullptr.; outPD != nullptr.

void vtkExtractStructuredGridHelper::CopyCellData	(	int	inExt[6],
		int	outExt[6],
		vtkCellData *	cd,
		vtkCellData *	outCD
	)

Copies the cell data to the output.

Parameters

inExt	the input grid extent.
outExt	the output grid extent.
cd	the input cell data.
outCD	the output cell data.

Precondition: cd != nullptr.; outCD != nullptr.

static void vtkExtractStructuredGridHelper::GetPartitionedVOI	(	const int	globalVOI[6],
		const int	partitionedExtent[6],
		const int	sampleRate[3],
		bool	includeBoundary,
		int	partitionedVOI[6]
	)

static

Calculate the VOI for a partitioned structured dataset.

This method sets partitionedVOI to the VOI that extracts as much of the partitionedExtent as possible while considering the globalVOI, the sampleRate, and the boundary conditions.

Parameters

globalVOI	The full VOI for the entire distributed dataset.
partitionedExtent	Extent of the process's partitioned input data.
sampleRate	The sampling rate in each dimension.
includeBoundary	Whether or not to include the boundary of the VOI, even if it doesn't fit the spacing.
partitionedVOI	The extent of the process's partitioned dataset that should be extracted by a serial extraction filter.

static void vtkExtractStructuredGridHelper::GetPartitionedOutputExtent	(	const int	globalVOI[6],
		const int	partitionedVOI[6],
		const int	outputWholeExtent[6],
		const int	sampleRate[3],
		bool	includeBoundary,
		int	partitionedOutputExtent[6]
	)

static

Calculate the partitioned output extent for a partitioned structured dataset.

This method sets partitionedOutputExtent to the correct extent of an extracted dataset, such that it properly fits with the other partitioned pieces while considering the globalVOI, the sampleRate, and the boundary conditions.

Parameters

globalVOI	The full VOI for the entire distributed dataset.
partitionedVOI	The VOI used in the serial extraction.
outputWholeExtent	The output extent of the full dataset.
sampleRate	The sampling rate in each dimension.
includeBoundary	Whether or not to include the boundary of the VOI, even if it doesn't fit the spacing.
partitionedOutputExtent	The correct output extent of the extracted dataset.