A helper class for interpolating between times during particle tracing. More...

#include <vtkTemporalInterpolatedVelocityField.h>

Inheritance diagram for vtkTemporalInterpolatedVelocityField:

Collaboration diagram for vtkTemporalInterpolatedVelocityField:

Public Types
typedef vtkFunctionSet	Superclass

Public Types inherited from vtkFunctionSet
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...

vtkTemporalInterpolatedVelocityField *	NewInstance () const

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

void	SelectVectors (const char *fieldName)
	If you want to work with an arbitrary vector array, then set its name here. More...

void	SetDataSetAtTime (int I, int N, double T, vtkDataSet *dataset, bool staticdataset)
	In order to use this class, two sets of data must be supplied, corresponding to times T1 and T2. More...

void	ClearCache ()
	Set the last cell id to -1 so that the next search does not start from the previous cell. More...

bool	InterpolatePoint (vtkPointData outPD1, vtkPointData outPD2, vtkIdType outIndex)

bool	InterpolatePoint (int T, vtkPointData *outPD1, vtkIdType outIndex)

bool	GetVorticityData (int T, double pcoords[3], double weights, vtkGenericCell &cell, vtkDoubleArray *cellVectors)

void	ShowCacheResults ()

bool	IsStatic (int datasetIndex)

void	AdvanceOneTimeStep ()


int	FunctionValues (double x, double u) override
	Evaluate the velocity field, f, at (x, y, z, t). More...

int	FunctionValuesAtT (int T, double x, double u)
	Evaluate the velocity field, f, at (x, y, z, t). More...


bool	GetCachedCellIds (vtkIdType id[2], int ds[2])
	Between iterations of the Particle Tracer, Id's of the Cell are stored and then at the start of the next particle the Ids are set to 'pre-fill' the cache. More...

void	SetCachedCellIds (vtkIdType id[2], int ds[2])
	Between iterations of the Particle Tracer, Id's of the Cell are stored and then at the start of the next particle the Ids are set to 'pre-fill' the cache. More...


int	TestPoint (double *x)
	A utility function which evaluates the point at T1, T2 to see if it is inside the data at both times or only one. More...

int	QuickTestPoint (double *x)
	A utility function which evaluates the point at T1, T2 to see if it is inside the data at both times or only one. More...


virtual double *	GetLastGoodVelocity ()
	If an interpolation was successful, we can retrieve the last computed value from here. More...

virtual void	GetLastGoodVelocity (double &, double &, double &)
	If an interpolation was successful, we can retrieve the last computed value from here. More...

virtual void	GetLastGoodVelocity (double[3])
	If an interpolation was successful, we can retrieve the last computed value from here. More...


virtual double	GetCurrentWeight ()
	Get the most recent weight between 0->1 from T1->T2. More...

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

virtual int	GetNumberOfFunctions ()
	Return the number of functions. More...

virtual int	GetNumberOfIndependentVariables ()
	Return the number of independent variables. 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 vtkTypeBool	IsTypeOf (const char *type)

static vtkTemporalInterpolatedVelocityField *	SafeDownCast (vtkObjectBase *o)

static vtkTemporalInterpolatedVelocityField *	New ()
	Construct a vtkTemporalInterpolatedVelocityField with no initial data set. More...

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

static vtkFunctionSet *	SafeDownCast (vtkObjectBase *o)

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

	vtkTemporalInterpolatedVelocityField ()

	~vtkTemporalInterpolatedVelocityField () override

int	FunctionValues (vtkDataSet ds, double x, double *f)

virtual void	SetVectorsSelection (const char *v)

Protected Member Functions inherited from vtkFunctionSet
	vtkFunctionSet ()

	~vtkFunctionSet () override

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
double	Vals1 [3]

double	Vals2 [3]

double	Times [2]

double	LastGoodVelocity [3]

double	CurrentWeight

double	OneMinusWeight

double	ScaleCoeff

vtkSmartPointer< vtkCachingInterpolatedVelocityField >	IVF [2]

std::vector< bool >	StaticDataSets

Protected Attributes inherited from vtkFunctionSet
int	NumFuncs

int	NumIndepVars

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

A helper class for interpolating between times during particle tracing.

vtkTemporalInterpolatedVelocityField is a general purpose helper for the temporal particle tracing code (vtkTemporalStreamTracer)

It maintains two copies of vtkCachingInterpolatedVelocityField internally and uses them to obtain velocity values at time T0 and T1.

In fact the class does quite a bit more than this because when the geometry of the datasets is the same at T0 and T1, we can re-use cached cell Ids and weights used in the cell interpolation routines. Additionally, the same weights can be used when interpolating (point) scalar values and computing vorticity etc.

Warning: vtkTemporalInterpolatedVelocityField is probably not thread safe. A new instance should be created by each thread.; Datasets are added in lists. The list for T1 must be idential to that for T0 in structure/topology and dataset order, and any datasets marked as static, must remain so for all T - changing a dataset from static to dynamic between time steps will result in undefined behaviour (=crash probably)

See also: vtkCachingInterpolatedVelocityField vtkTemporalStreamTracer

Definition at line 68 of file vtkTemporalInterpolatedVelocityField.h.

Member Typedef Documentation

typedef vtkFunctionSet vtkTemporalInterpolatedVelocityField::Superclass

Definition at line 71 of file vtkTemporalInterpolatedVelocityField.h.

Constructor & Destructor Documentation

vtkTemporalInterpolatedVelocityField::vtkTemporalInterpolatedVelocityField ( )

protected

vtkTemporalInterpolatedVelocityField::~vtkTemporalInterpolatedVelocityField ( )

overrideprotected

Member Function Documentation

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

static

virtual vtkTypeBool vtkTemporalInterpolatedVelocityField::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 vtkFunctionSet.

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

static

virtual vtkObjectBase* vtkTemporalInterpolatedVelocityField::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkFunctionSet.

vtkTemporalInterpolatedVelocityField* vtkTemporalInterpolatedVelocityField::NewInstance ( ) const

void vtkTemporalInterpolatedVelocityField::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 vtkFunctionSet.

static vtkTemporalInterpolatedVelocityField* vtkTemporalInterpolatedVelocityField::New ( )

static

Construct a vtkTemporalInterpolatedVelocityField with no initial data set.

Caching is on. LastCellId is set to -1.

int vtkTemporalInterpolatedVelocityField::FunctionValues	(	double *	x,
		double *	u
	)

overridevirtual

Evaluate the velocity field, f, at (x, y, z, t).

For now, t is ignored.

Implements vtkFunctionSet.

int vtkTemporalInterpolatedVelocityField::FunctionValuesAtT	(	int	T,
		double *	x,
		double *	u
	)

Evaluate the velocity field, f, at (x, y, z, t).

For now, t is ignored.

void vtkTemporalInterpolatedVelocityField::SelectVectors ( const char * fieldName )

inline

If you want to work with an arbitrary vector array, then set its name here.

By default this is nullptr and the filter will use the active vector array.

Definition at line 94 of file vtkTemporalInterpolatedVelocityField.h.

void vtkTemporalInterpolatedVelocityField::SetDataSetAtTime	(	int	I,
		int	N,
		double	T,
		vtkDataSet *	dataset,
		bool	staticdataset
	)

In order to use this class, two sets of data must be supplied, corresponding to times T1 and T2.

Data is added via this function.

bool vtkTemporalInterpolatedVelocityField::GetCachedCellIds	(	vtkIdType	id[2],
		int	ds[2]
	)

Between iterations of the Particle Tracer, Id's of the Cell are stored and then at the start of the next particle the Ids are set to 'pre-fill' the cache.

void vtkTemporalInterpolatedVelocityField::SetCachedCellIds	(	vtkIdType	id[2],
		int	ds[2]
	)

Between iterations of the Particle Tracer, Id's of the Cell are stored and then at the start of the next particle the Ids are set to 'pre-fill' the cache.

void vtkTemporalInterpolatedVelocityField::ClearCache ( )

Set the last cell id to -1 so that the next search does not start from the previous cell.

int vtkTemporalInterpolatedVelocityField::TestPoint ( double * x )

A utility function which evaluates the point at T1, T2 to see if it is inside the data at both times or only one.

int vtkTemporalInterpolatedVelocityField::QuickTestPoint ( double * x )

A utility function which evaluates the point at T1, T2 to see if it is inside the data at both times or only one.

virtual double* vtkTemporalInterpolatedVelocityField::GetLastGoodVelocity ( )

virtual

If an interpolation was successful, we can retrieve the last computed value from here.

Initial value is (0.0,0.0,0.0)

virtual void vtkTemporalInterpolatedVelocityField::GetLastGoodVelocity	(	double &	,
		double &	,
		double &
	)

virtual

If an interpolation was successful, we can retrieve the last computed value from here.

Initial value is (0.0,0.0,0.0)

virtual void vtkTemporalInterpolatedVelocityField::GetLastGoodVelocity ( double [3] )

virtual

If an interpolation was successful, we can retrieve the last computed value from here.

Initial value is (0.0,0.0,0.0)

virtual double vtkTemporalInterpolatedVelocityField::GetCurrentWeight ( )

virtual

Get the most recent weight between 0->1 from T1->T2.

Initial value is 0.

bool vtkTemporalInterpolatedVelocityField::InterpolatePoint	(	vtkPointData *	outPD1,
		vtkPointData *	outPD2,
		vtkIdType	outIndex
	)

bool vtkTemporalInterpolatedVelocityField::InterpolatePoint	(	int	T,
		vtkPointData *	outPD1,
		vtkIdType	outIndex
	)

bool vtkTemporalInterpolatedVelocityField::GetVorticityData	(	int	T,
		double	pcoords[3],
		double *	weights,
		vtkGenericCell *&	cell,
		vtkDoubleArray *	cellVectors
	)