#include <itkImageReverseConstIterator.h>

Detailed Description

template<typename TImage>
class itk::ImageReverseConstIterator< TImage >

Multi-dimensional image iterator.

ImageReverseConstIterator is a templated class to represent a multi-dimensional iterator. ImageReverseConstIterator is templated over the dimension of the image and the data type of the image.

ImageReverseConstIterator is a base class for all the reverse image iterators. It provides the basic construction and comparison operations. However, it does not provide mechanisms for moving the iterator. A subclass of ImageReverseConstIterator must be used to move the iterator.

ImageReverseConstIterator is a multi-dimensional iterator, requiring more information be specified before the iterator can be used than conventional iterators. Whereas the std::vector::iterator from the STL only needs to be passed a pointer to establish the iterator, the multi-dimensional image iterator needs a pointer, the size of the buffer, the size of the region, the start index of the buffer, and the start index of the region. To gain access to this information, ImageReverseConstIterator holds a reference to the image over which it is traversing.

ImageReverseConstIterator assumes a particular layout of the image data. In particular, the data is arranged in a 1D array as if it were [][][][slice][row][col] with Index[0] = col, Index[1] = row, Index[2] = slice, etc.

MORE INFORMATION: For a complete description of the ITK Image Iterators and their API, please see the Iterators chapter in the ITK Software Guide. The ITK Software Guide is available in print and as a free .pdf download from https://www.itk.org.

See also: ImageConstIterator; ConditionalConstIterator; ConstNeighborhoodIterator; ConstShapedNeighborhoodIterator; ConstSliceIterator; CorrespondenceDataStructureIterator; FloodFilledFunctionConditionalConstIterator; FloodFilledImageFunctionConditionalConstIterator; FloodFilledImageFunctionConditionalIterator; FloodFilledSpatialFunctionConditionalConstIterator; FloodFilledSpatialFunctionConditionalIterator; ImageConstIterator; ImageConstIteratorWithIndex; ImageIterator; ImageIteratorWithIndex; ImageLinearConstIteratorWithIndex; ImageLinearIteratorWithIndex; ImageRandomConstIteratorWithIndex; ImageRandomIteratorWithIndex; ImageRegionConstIterator; ImageRegionConstIteratorWithIndex; ImageRegionExclusionConstIteratorWithIndex; ImageRegionExclusionIteratorWithIndex; ImageRegionIterator; ImageRegionIteratorWithIndex; ImageRegionReverseConstIterator; ImageRegionReverseIterator; ImageReverseConstIterator; ImageReverseIterator; ImageSliceConstIteratorWithIndex; ImageSliceIteratorWithIndex; NeighborhoodIterator; PathConstIterator; PathIterator; ShapedNeighborhoodIterator; SliceIterator; ImageConstIteratorWithIndex

Definition at line 87 of file itkImageReverseConstIterator.h.

Inheritance diagram for itk::ImageReverseConstIterator< TImage >:

Public Types
using	AccessorFunctorType = typename TImage::AccessorFunctorType

using	AccessorType = typename TImage::AccessorType

using	ImageType = TImage

using	IndexType = typename TImage::IndexType

using	InternalPixelType = typename TImage::InternalPixelType

using	OffsetType = typename TImage::OffsetType

using	PixelContainer = typename TImage::PixelContainer

using	PixelContainerPointer = typename PixelContainer::Pointer

using	PixelType = typename TImage::PixelType

using	RegionType = typename TImage::RegionType

using	Self = ImageReverseConstIterator

using	SizeType = typename TImage::SizeType

Public Member Functions
const PixelType	Get () const

const IndexType	GetIndex ()

virtual const char *	GetNameOfClass () const

const RegionType &	GetRegion () const

void	GoToBegin ()

void	GoToEnd ()

	ImageReverseConstIterator (const ImageType *ptr, const RegionType &region)

	ImageReverseConstIterator (const Self &it)

bool	IsAtBegin () const

bool	IsAtEnd () const

	ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION (Self)

bool	operator== (const Self &it) const

void	Set (const PixelType &value) const

virtual void	SetIndex (const IndexType &ind)

const PixelType &	Value ()

const PixelType &	Value () const

virtual	~ImageReverseConstIterator ()=default


	ImageReverseConstIterator ()


	ImageReverseConstIterator (const ImageConstIterator< TImage > &it)


Self &	operator= (const Self &it)


Self &	operator= (const ImageConstIterator< TImage > &it)

Static Public Member Functions
static unsigned int	GetImageIteratorDimension ()

Static Public Attributes
static constexpr unsigned int	ImageIteratorDimension = TImage::ImageDimension

Protected Attributes
SizeValueType	m_BeginOffset {}

const InternalPixelType *	m_Buffer {}

SizeValueType	m_EndOffset {}

ImageType::ConstWeakPointer	m_Image {}

SizeValueType	m_Offset {}

AccessorType	m_PixelAccessor {}

AccessorFunctorType	m_PixelAccessorFunctor {}

RegionType	m_Region {}

Member Typedef Documentation

◆ AccessorFunctorType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::AccessorFunctorType = typename TImage::AccessorFunctorType

Functor to choose the appropriate accessor. (for Image vs VectorImage)

Definition at line 134 of file itkImageReverseConstIterator.h.

◆ AccessorType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::AccessorType = typename TImage::AccessorType

Accessor type that convert data between internal and external representations.

Definition at line 131 of file itkImageReverseConstIterator.h.

◆ ImageType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::ImageType = TImage

Image type alias support

Definition at line 115 of file itkImageReverseConstIterator.h.

◆ IndexType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::IndexType = typename TImage::IndexType

Index type alias support

Definition at line 103 of file itkImageReverseConstIterator.h.

◆ InternalPixelType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::InternalPixelType = typename TImage::InternalPixelType

Internal Pixel Type

Definition at line 124 of file itkImageReverseConstIterator.h.

◆ OffsetType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::OffsetType = typename TImage::OffsetType

Offset type alias support

Definition at line 109 of file itkImageReverseConstIterator.h.

◆ PixelContainer

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::PixelContainer = typename TImage::PixelContainer

PixelContainer type alias support Used to refer to the container for the pixel data. While this was already typedef'ed in the superclass it needs to be redone here for this subclass to compile properly with gcc.

Definition at line 120 of file itkImageReverseConstIterator.h.

◆ PixelContainerPointer

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::PixelContainerPointer = typename PixelContainer::Pointer

Definition at line 121 of file itkImageReverseConstIterator.h.

◆ PixelType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::PixelType = typename TImage::PixelType

External Pixel Type

Definition at line 127 of file itkImageReverseConstIterator.h.

◆ RegionType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::RegionType = typename TImage::RegionType

Region type alias support

Definition at line 112 of file itkImageReverseConstIterator.h.

◆ Self

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::Self = ImageReverseConstIterator

Standard class type aliases.

Definition at line 91 of file itkImageReverseConstIterator.h.

◆ SizeType

template<typename TImage >

using itk::ImageReverseConstIterator< TImage >::SizeType = typename TImage::SizeType

Size type alias support

Definition at line 106 of file itkImageReverseConstIterator.h.

Constructor & Destructor Documentation

◆ ImageReverseConstIterator() [1/4]

template<typename TImage >

itk::ImageReverseConstIterator< TImage >::ImageReverseConstIterator ( )

inline

Default Constructor. Need to provide a default constructor since we provide a copy constructor.

Definition at line 138 of file itkImageReverseConstIterator.h.

◆ ~ImageReverseConstIterator()

template<typename TImage >

virtual itk::ImageReverseConstIterator< TImage >::~ImageReverseConstIterator ( )

virtualdefault

Default Destructor.

◆ ImageReverseConstIterator() [2/4]

template<typename TImage >

itk::ImageReverseConstIterator< TImage >::ImageReverseConstIterator ( const Self & it )

inline

Copy Constructor. The copy constructor is provided to make sure the handle to the image is properly reference counted.

Definition at line 155 of file itkImageReverseConstIterator.h.

References itk::ImageReverseConstIterator< TImage >::m_BeginOffset, itk::ImageReverseConstIterator< TImage >::m_Buffer, itk::ImageReverseConstIterator< TImage >::m_EndOffset, itk::ImageReverseConstIterator< TImage >::m_Image, itk::ImageReverseConstIterator< TImage >::m_Offset, itk::ImageReverseConstIterator< TImage >::m_PixelAccessor, itk::ImageReverseConstIterator< TImage >::m_PixelAccessorFunctor, and itk::ImageReverseConstIterator< TImage >::m_Region.

◆ ImageReverseConstIterator() [3/4]

template<typename TImage >

itk::ImageReverseConstIterator< TImage >::ImageReverseConstIterator	(	const ImageType *	ptr,
		const RegionType &	region
	)

inline

Constructor establishes an iterator to walk a particular image and a particular region of that image. Initializes the iterator at the begin of the region.

Definition at line 172 of file itkImageReverseConstIterator.h.

◆ ImageReverseConstIterator() [4/4]

template<typename TImage >

itk::ImageReverseConstIterator< TImage >::ImageReverseConstIterator ( const ImageConstIterator< TImage > & it )

inline

Constructor that can be used to cast from an ImageConstIterator to an ImageRegionReverseIterator. Many routines return an ImageConstIterator but for a particular task, you may want an ImageRegionReverseIterator. Rather than provide overloaded APIs that return different types of Iterators, itk returns ImageConstIterators and uses constructors to cast from an ImageConstIterator to a ImageRegionReverseIterator.

Definition at line 206 of file itkImageReverseConstIterator.h.

References itk::ImageConstIterator< TImage >::GetImage(), itk::ImageConstIterator< TImage >::GetIndex(), and itk::ImageConstIterator< TImage >::GetRegion().

Member Function Documentation

◆ Get()

template<typename TImage >

const PixelType itk::ImageReverseConstIterator< TImage >::Get ( ) const

inline

Get the pixel value

Definition at line 335 of file itkImageReverseConstIterator.h.

◆ GetImageIteratorDimension()

template<typename TImage >

static unsigned int itk::ImageReverseConstIterator< TImage >::GetImageIteratorDimension ( )

inlinestatic

Get the dimension (size) of the index.

Definition at line 290 of file itkImageReverseConstIterator.h.

◆ GetIndex()

template<typename TImage >

const IndexType itk::ImageReverseConstIterator< TImage >::GetIndex ( )

inline

Get the index. This provides a read only reference to the index. This causes the index to be calculated from pointer arithmetic and is therefore an expensive operation.

See also: SetIndex

Definition at line 312 of file itkImageReverseConstIterator.h.

Referenced by itk::ImageRegionReverseConstIterator< TImage >::operator++(), and itk::ImageRegionReverseConstIterator< TImage >::operator--().

◆ GetNameOfClass()

template<typename TImage >

virtual const char * itk::ImageReverseConstIterator< TImage >::GetNameOfClass ( ) const

virtual

See also: LightObject::GetNameOfClass()

Reimplemented in itk::ImageRegionReverseConstIterator< TImage >.

◆ GetRegion()

template<typename TImage >

const RegionType & itk::ImageReverseConstIterator< TImage >::GetRegion ( ) const

inline

Get the region that this iterator walks. ImageReverseConstIterators know the beginning and the end of the region of the image to iterate over.

Definition at line 328 of file itkImageReverseConstIterator.h.

◆ GoToBegin()

template<typename TImage >

void itk::ImageReverseConstIterator< TImage >::GoToBegin ( )

inline

Move an iterator to the beginning of the region. "Begin" for a reverse iterator is the last pixel in the region.

Definition at line 368 of file itkImageReverseConstIterator.h.

◆ GoToEnd()

template<typename TImage >

void itk::ImageReverseConstIterator< TImage >::GoToEnd ( )

inline

Move an iterator to the end of the region. "End" for a reverse iterator is defined as one pixel before the first pixel in the region.

Definition at line 376 of file itkImageReverseConstIterator.h.

◆ IsAtBegin()

template<typename TImage >

bool itk::ImageReverseConstIterator< TImage >::IsAtBegin ( ) const

inline

Is the iterator at the beginning of the (reverse) region? "Begin" for a reverse iterator is the last pixel in the region.

Definition at line 384 of file itkImageReverseConstIterator.h.

◆ IsAtEnd()

template<typename TImage >

bool itk::ImageReverseConstIterator< TImage >::IsAtEnd ( ) const

inline

Is the iterator at the end of the (reverse) region? "End" for a reverse iterator is one pixel before the first pixel in the region.

Definition at line 392 of file itkImageReverseConstIterator.h.

◆ ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION()

template<typename TImage >

itk::ImageReverseConstIterator< TImage >::ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION ( Self )

◆ operator=() [1/2]

template<typename TImage >

Self & itk::ImageReverseConstIterator< TImage >::operator= ( const ImageConstIterator< TImage > & it )

inline

operator= is provided to make sure the handle to the image is properly reference counted.

Definition at line 259 of file itkImageReverseConstIterator.h.

References itk::ImageConstIterator< TImage >::GetImage(), itk::ImageConstIterator< TImage >::GetIndex(), and itk::ImageConstIterator< TImage >::GetRegion().

◆ operator=() [2/2]

template<typename TImage >

Self & itk::ImageReverseConstIterator< TImage >::operator= ( const Self & it )

inline

operator= is provided to make sure the handle to the image is properly reference counted.

Definition at line 237 of file itkImageReverseConstIterator.h.

References itk::ImageReverseConstIterator< TImage >::m_BeginOffset, itk::ImageReverseConstIterator< TImage >::m_Buffer, itk::ImageReverseConstIterator< TImage >::m_EndOffset, itk::ImageReverseConstIterator< TImage >::m_Image, itk::ImageReverseConstIterator< TImage >::m_Offset, itk::ImageReverseConstIterator< TImage >::m_PixelAccessor, and itk::ImageReverseConstIterator< TImage >::m_Region.

◆ operator==()

template<typename TImage >

bool itk::ImageReverseConstIterator< TImage >::operator== ( const Self & it ) const

inline

Comparison operator. Two iterators are the same if they "point to" the same memory location

Definition at line 298 of file itkImageReverseConstIterator.h.

References itk::ImageReverseConstIterator< TImage >::m_Buffer, and itk::ImageReverseConstIterator< TImage >::m_Offset.

◆ Set()

template<typename TImage >

void itk::ImageReverseConstIterator< TImage >::Set ( const PixelType & value ) const

inline

Set the pixel value

Definition at line 342 of file itkImageReverseConstIterator.h.

◆ SetIndex()

template<typename TImage >

virtual void itk::ImageReverseConstIterator< TImage >::SetIndex ( const IndexType & ind )

inlinevirtual

Set the index. No bounds checking is performed.

See also: GetIndex

Reimplemented in itk::ImageRegionReverseConstIterator< TImage >.

Definition at line 320 of file itkImageReverseConstIterator.h.

◆ Value() [1/2]

template<typename TImage >

const PixelType & itk::ImageReverseConstIterator< TImage >::Value ( )

inline

Return a reference to the pixel This method will provide the fastest access to pixel data, but it will NOT support ImageAdaptors.

Definition at line 360 of file itkImageReverseConstIterator.h.

◆ Value() [2/2]

template<typename TImage >

const PixelType & itk::ImageReverseConstIterator< TImage >::Value ( ) const

inline

Return a const reference to the pixel This method will provide the fastest access to pixel data, but it will NOT support ImageAdaptors.

Definition at line 351 of file itkImageReverseConstIterator.h.

Member Data Documentation

◆ ImageIteratorDimension

template<typename TImage >

constexpr unsigned int itk::ImageReverseConstIterator< TImage >::ImageIteratorDimension = TImage::ImageDimension

staticconstexpr

Dimension of the image the iterator walks. This constant is needed so functions that are templated over image iterator type (as opposed to being templated over pixel type and dimension) can have compile time access to the dimension of the image that the iterator walks.

Definition at line 97 of file itkImageReverseConstIterator.h.