vtkNew< T > Class Template Reference

Allocate and hold a VTK object. More...

#include <vtkNew.h>

Public Member Functions
	vtkNew ()
	Create a new T on construction.
T *	operator-> () const noexcept
	Enable pointer-like dereference syntax.
T &	operator* () const noexcept
	Dereference the pointer and return a reference to the contained object.
vtkNew< T > &	operator= (vtkNew< T > &&other) noexcept
	Move assignment operator.
	vtkNew (vtkNew &&o) noexcept
	Move the object into the constructed vtkNew wrapper, stealing its reference.
template<typename U >
	vtkNew (vtkNew< U > &&o) noexcept
	Move the object into the constructed vtkNew wrapper, stealing its reference.
void	Reset ()
	Deletes reference to instance of T.
T *	GetPointer () const noexcept
	Get a raw pointer to the contained object.
T *	Get () const noexcept
	Get a raw pointer to the contained object.
	operator T* () const noexcept
	Get a raw pointer to the contained object.

Friends
template<typename U >
class	vtkNew
template<typename U >
class	vtkSmartPointer
template<typename U >
class	vtkWeakPointer
void	vtkGarbageCollectorReport (vtkGarbageCollector *collector, vtkNew< T > &ptr, const char *desc)
	Function to report a reference held by a vtkNew to a collector.

Detailed Description

template<class T>
class vtkNew< T >

Allocate and hold a VTK object.

vtkNew is a class template that on construction allocates and initializes an instance of its template argument using T::New(). It assumes ownership of one reference during its lifetime, and calls T->Delete() on destruction.

Automatic casting to raw pointer is available for convenience, but users of this method should ensure that they do not return this pointer if the vtkNew will go out of scope without incrementing its reference count.

vtkNew is a drop in replacement for vtkSmartPointer, for example,

vtkNew<vtkRenderer> ren;
vtkNew<vtkRenderWindow> renWin;
renWin->AddRenderer(ren);
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin);

See also

vtkSmartPointer vtkWeakPointer

Examples:

vtkNew (Examples)

Online Examples:

EnhanceEdges

ClipClosedSurface

SimpleElevationFilter

Delaunay3D

InterpolateTerrain

KochanekSpline

ParametricSpline

VisualizeRectilinearGrid

Legend

LineWidget2

Tests:

vtkNew (Tests)

Definition at line 166 of file vtkNew.h.

Constructor & Destructor Documentation

vtkNew() [1/3]

template<class T >

vtkNew< T >::vtkNew ( )

inline

Create a new T on construction.

Definition at line 199 of file vtkNew.h.

vtkNew() [2/3]

template<class T >

vtkNew< T >::vtkNew ( vtkNew< T > &&  o )

inlinenoexcept

Move the object into the constructed vtkNew wrapper, stealing its reference.

The argument is reset to nullptr.

Definition at line 210 of file vtkNew.h.

vtkNew() [3/3]

template<class T >

template<typename U >

vtkNew< T >::vtkNew ( vtkNew< U > &&  o )

inlinenoexcept

Move the object into the constructed vtkNew wrapper, stealing its reference.

The argument is reset to nullptr.

Definition at line 217 of file vtkNew.h.

~vtkNew()

template<class T >

vtkNew< T >::~vtkNew ( )

inline

Deletes reference to instance of T.

Definition at line 230 of file vtkNew.h.

Member Function Documentation

Reset()

template<class T >

void vtkNew< T >::Reset ( )

inline

Deletes reference to instance of T.

Definition at line 232 of file vtkNew.h.

operator->()

template<class T >

T * vtkNew< T >::operator-> ( ) const

inlinenoexcept

Enable pointer-like dereference syntax.

Returns a pointer to the contained object.

Definition at line 247 of file vtkNew.h.

GetPointer()

template<class T >

T * vtkNew< T >::GetPointer ( ) const

inlinenoexcept

Get a raw pointer to the contained object.

When using this function be careful that the reference count does not drop to 0 when using the pointer returned. This will happen when the vtkNew object goes out of scope for example.

Definition at line 256 of file vtkNew.h.

Get()

template<class T >

T * vtkNew< T >::Get ( ) const

inlinenoexcept

Get a raw pointer to the contained object.

When using this function be careful that the reference count does not drop to 0 when using the pointer returned. This will happen when the vtkNew object goes out of scope for example.

Definition at line 257 of file vtkNew.h.

operator T*()

template<class T >

vtkNew< T >::operator T* ( ) const

inlinenoexcept

Get a raw pointer to the contained object.

When using this function be careful that the reference count does not drop to 0 when using the pointer returned. This will happen when the vtkNew object goes out of scope for example.

Definition at line 258 of file vtkNew.h.

operator*()

template<class T >

T & vtkNew< T >::operator* ( ) const

inlinenoexcept

Dereference the pointer and return a reference to the contained object.

When using this function be careful that the reference count does not drop to 0 when using the pointer returned. This will happen when the vtkNew object goes out of scope for example.

Definition at line 266 of file vtkNew.h.

operator=()

template<class T >

vtkNew< T > & vtkNew< T >::operator= ( vtkNew< T > &&  other )

inlinenoexcept

Move assignment operator.

Definition at line 271 of file vtkNew.h.

Friends And Related Symbol Documentation

vtkNew

template<class T >

template<typename U >

friend class vtkNew

friend

Definition at line 170 of file vtkNew.h.

vtkSmartPointer

template<class T >

template<typename U >

friend class vtkSmartPointer

friend

Definition at line 172 of file vtkNew.h.

vtkWeakPointer

template<class T >

template<typename U >

friend class vtkWeakPointer

friend

Definition at line 174 of file vtkNew.h.

vtkGarbageCollectorReport

template<class T >

void vtkGarbageCollectorReport ( vtkGarbageCollector *  collector, vtkNew< T > &  ptr, const char *  desc  )

friend

Function to report a reference held by a vtkNew to a collector.

Definition at line 192 of file vtkGarbageCollector.h.

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

• Common/Core/vtkGarbageCollector.h
• Common/Core/vtkNew.h