selects elements matching chosen values. More...

#include <vtkValueSelector.h>

Inheritance diagram for vtkValueSelector:

Collaboration diagram for vtkValueSelector:

Public Types
typedef vtkSelector	Superclass

Public Types inherited from vtkSelector
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.

vtkValueSelector *	NewInstance () const

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

void	Initialize (vtkSelectionNode *node) override
	Sets the vtkSelectionNode used by this selection operator and initializes the data structures in the selection operator based on the selection.

void	Finalize () override
	Does any cleanup of objects created in Initialize.

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

vtkSelector *	NewInstance () const

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

virtual void	Initialize (vtkSelectionNode *node)
	Sets the vtkSelectionNode used by this selection operator and initializes the data structures in the selection operator based on the selection.

virtual void	Finalize ()
	Does any cleanup of objects created in Initialize.

virtual void	Execute (vtkDataObject input, vtkDataObject output)
	Given an input and the vtkSelectionNode passed into the Initialize() method, add to the output a vtkSignedChar attribute array indicating whether each element is inside (1) or outside (0) the selection.

virtual void	SetInsidednessArrayName (std::string)
	Get/Set the name of the array to use for the insidedness array to add to the output in `Execute` call.

virtual std::string	GetInsidednessArrayName ()
	Get/Set the name of the array to use for the insidedness array to add to the output in `Execute` call.

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 vtkValueSelector *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkValueSelector *	SafeDownCast (vtkObjectBase *o)

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

static vtkSelector *	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.

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

	vtkValueSelector ()

	~vtkValueSelector () override

bool	ComputeSelectedElements (vtkDataObject input, vtkSignedCharArray insidednessArray) override
	This method computes whether or not each element in the dataset is inside the selection and populates the given array with 0 (outside the selection) or 1 (inside the selection).

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

	vtkSelector ()

	~vtkSelector () override

virtual bool	ComputeSelectedElements (vtkDataObject input, vtkSignedCharArray insidednessArray)=0
	This method computes whether or not each element in the dataset is inside the selection and populates the given array with 0 (outside the selection) or 1 (inside the selection).

virtual SelectionMode	GetAMRBlockSelection (unsigned int level, unsigned int index)
	Returns whether the AMR block is to be processed.

virtual SelectionMode	GetBlockSelection (unsigned int compositeIndex)
	Returns whether the block is to be processed.

vtkSmartPointer< vtkSignedCharArray >	CreateInsidednessArray (vtkIdType numElems)
	Creates an array suitable for storing insideness.

vtkSmartPointer< vtkSignedCharArray >	ComputeCellsContainingSelectedPoints (vtkDataObject data, vtkSignedCharArray selectedPoints)
	Given a data object and selected points, return an array indicating the insidedness of cells that contain at least one of the selected points.

void	ExpandToConnectedElements (vtkDataObject *output)
	Handle expanding to connected cells or point, if requested.

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 &)

Additional Inherited Members
Protected Types inherited from vtkSelector
enum	SelectionMode { INCLUDE , EXCLUDE , INHERIT }

Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes inherited from vtkSelector
vtkSelectionNode *	Node = nullptr

std::string	InsidednessArrayName

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

selects elements matching chosen values.

vtkValueSelector is a vtkSelector that can select elements matching values. This can handle a wide array of vtkSelectionNode::SelectionContent types. These include vtkSelectionNode::GLOBALIDS, vtkSelectionNode::PEDIGREEIDS, vtkSelectionNode::VALUES, vtkSelectionNode::INDICES, and vtkSelectionNode::THRESHOLDS.

A few things to note:

vtkSelectionNode::SelectionList must be 2-component array for content-type = vtkSelectionNode::THRESHOLDS and 1-component array for all other support content-types. For 1-component selection list, this will match items where the field array (or index) value matches any value in the selection list. For 2-component selection list, this will match those items with values in inclusive-range specified by the two components.
For vtkSelectionNode::VALUES or vtkSelectionNode::THRESHOLDS, the field array to select on is defined by the name given the SelectionList itself. If the SelectionList has no name (or is an empty string), then the active scalars from the dataset will be chosen.

Definition at line 47 of file vtkValueSelector.h.

Member Typedef Documentation

◆ Superclass

typedef vtkSelector vtkValueSelector::Superclass

Definition at line 51 of file vtkValueSelector.h.

Constructor & Destructor Documentation

◆ vtkValueSelector()

vtkValueSelector::vtkValueSelector ( )

protected

◆ ~vtkValueSelector()

vtkValueSelector::~vtkValueSelector ( )

overrideprotected

Member Function Documentation

◆ New()

static vtkValueSelector * vtkValueSelector::New ( )

static

◆ IsTypeOf()

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

static

◆ IsA()

virtual vtkTypeBool vtkValueSelector::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 vtkSelector.

◆ SafeDownCast()

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

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkValueSelector::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkSelector.

◆ NewInstance()

vtkValueSelector * vtkValueSelector::NewInstance ( ) const

◆ PrintSelf()

void vtkValueSelector::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 vtkSelector.

◆ Initialize()

void vtkValueSelector::Initialize ( vtkSelectionNode * node )

overridevirtual

Sets the vtkSelectionNode used by this selection operator and initializes the data structures in the selection operator based on the selection.

(for example in the vtkFrustumSelector this creates the vtkPlanes implicit function to represent the frustum).

Parameters

node	The selection node that determines the behavior of this operator.

Reimplemented from vtkSelector.

◆ Finalize()

void vtkValueSelector::Finalize ( )

overridevirtual

Does any cleanup of objects created in Initialize.

Reimplemented from vtkSelector.

◆ ComputeSelectedElements()

bool vtkValueSelector::ComputeSelectedElements	(	vtkDataObject *	input,
		vtkSignedCharArray *	insidednessArray
	)

overrideprotectedvirtual

This method computes whether or not each element in the dataset is inside the selection and populates the given array with 0 (outside the selection) or 1 (inside the selection).

The vtkDataObject passed in will never be a vtkCompositeDataSet subclass.

What type of elements are operated over is determined by the vtkSelectionNode's field association. The insidednessArray passed in should have the correct number of elements for that field type or it will be resized.

Returns true for successful completion. The operator should only return false when it cannot operate on the inputs. In which case, it is assumed that the insidednessArray may have been left untouched by this method and the calling code will fill it with 0.

Implements vtkSelector.

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

Filters/Extraction/vtkValueSelector.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkValueSelector()

◆ ~vtkValueSelector()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ Initialize()

◆ Finalize()

◆ ComputeSelectedElements()