itk::Index< VIndexDimension > Class Template Reference
[Image Access Objects, Image Representation Objects]

#include <itkIndex.h>

List of all members.

---

Detailed Description

template<unsigned int VIndexDimension = 2>
class itk::Index< VIndexDimension >

Represent a n-dimensional index in a n-dimensional image.

Index is a templated class to represent a multi-dimensional index, i.e. (i,j,k,...). Index is templated over the dimension of the index. ITK assumes the first element of an index is the fastest moving index.

For efficiency sake, Index does not define a default constructor, a copy constructor, or an operator=. We rely on the compiler to provide efficient bitwise copies.

Index is an "aggregate" class. Its data is public (m_Index) allowing for fast and convenient instantiations/assignments.

The following syntax for assigning an index is allowed/suggested:

Index<3> index = {{5, 2, 7}};

The double braces {{ and }} are needed to prevent a compiler warning about a partly bracketed initializer.

Remarks:

Should there be an itkBoundedIndex to handle bounds checking? Or should there be an API to perform bounded increments in the iterator.

Examples:

Common/itkImageSliceIteratorTest.cxx.

Definition at line 66 of file itkIndex.h.

Public Types
typedef Index< VIndexDimension >	IndexType
typedef long	IndexValueType
typedef Functor::IndexLexicographicCompare< VIndexDimension >	LexicographicCompare
typedef Offset< VIndexDimension >	OffsetType
typedef OffsetType::OffsetValueType	OffsetValueType
typedef Index	Self
typedef Size< VIndexDimension >	SizeType
Public Member Functions
void	Fill (IndexValueType value)
IndexValueType	GetElement (unsigned long element)
const IndexValueType *	GetIndex () const
IndexValueType	operator[] (unsigned int dim) const
IndexValueType &	operator[] (unsigned int dim)
void	SetElement (unsigned long element, IndexValueType val)
void	SetIndex (const IndexValueType val[VIndexDimension])
const Self	operator * (const SizeType &vec) const
bool	operator!= (const Self &vec) const
const Self	operator+ (const OffsetType &offset) const
const Self	operator+ (const SizeType &size) const
const Self &	operator+= (const OffsetType &offset)
const Self &	operator+= (const SizeType &size)
const OffsetType	operator- (const Self &vec) const
const Self	operator- (const OffsetType &off) const
const Self	operator- (const SizeType &size) const
const Self &	operator-= (const OffsetType &offset)
const Self &	operator-= (const SizeType &size)
bool	operator== (const Self &vec) const
Static Public Member Functions
static Self	GetBasisIndex (unsigned int dim)
static unsigned int	GetIndexDimension ()
Public Attributes
IndexValueType	m_Index [VIndexDimension]

---

Member Typedef Documentation

template<unsigned int VIndexDimension = 2>

typedef Index<VIndexDimension> itk::Index< VIndexDimension >::IndexType

Compatible Index and value typedef

Definition at line 72 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

typedef long itk::Index< VIndexDimension >::IndexValueType

Definition at line 73 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

typedef Functor::IndexLexicographicCompare<VIndexDimension> itk::Index< VIndexDimension >::LexicographicCompare

Lexicographic ordering functor type.

Definition at line 86 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

typedef Offset<VIndexDimension> itk::Index< VIndexDimension >::OffsetType

Compatible Offset and Offset value typedef.

Definition at line 82 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

typedef OffsetType::OffsetValueType itk::Index< VIndexDimension >::OffsetValueType

Definition at line 83 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

typedef Index itk::Index< VIndexDimension >::Self

Standard class typedefs.

Definition at line 69 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

typedef Size<VIndexDimension> itk::Index< VIndexDimension >::SizeType

Compatible Size typedef.

Definition at line 79 of file itkIndex.h.

---

Member Function Documentation

template<unsigned int VIndexDimension = 2>

void itk::Index< VIndexDimension >::Fill

(

IndexValueType

value

)

[inline]

Set one value for the index in all dimensions. Useful for initializing an offset to zero.

Definition at line 264 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

Referenced by itk::ImageIORegionAdaptor< VDimension >::Convert().

template<unsigned int VIndexDimension>

Index< VIndexDimension > itk::Index< VIndexDimension >::GetBasisIndex

(

unsigned int

dim

)

[static]

Return a basis vector of the form [0, ..., 0, 1, 0, ... 0] where the "1" is positioned in the location specified by the parameter "dim". Valid values of "dim" are 0, ..., VIndexDimension-1.

Definition at line 311 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

IndexValueType itk::Index< VIndexDimension >::GetElement

(

unsigned long

element

)

[inline]

Gets the value of one of the elements in the index. This method is mainly intended to facilitate the access to elements from Tcl and Python where C++ notation is not very convenient.

Warning:

No bound checking is performed

See also:

GetIndex()

SetElement()

Definition at line 254 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const IndexValueType* itk::Index< VIndexDimension >::GetIndex

(

void

)

const [inline]

Get the index. This provides a read only reference to the index.

See also:

SetIndex()

Definition at line 230 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

static unsigned int itk::Index< VIndexDimension >::GetIndexDimension

(

)

[inline, static]

Get the dimension (size) of the index.

Definition at line 76 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>

const Self itk::Index< VIndexDimension >::operator *

(

const SizeType &

vec

)

const [inline]

Multiply an index by a size (elementwise product). This method models a random access Index.

Definition at line 186 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index, and itk::Size< VDimension >::m_Size.

template<unsigned int VIndexDimension = 2>

bool itk::Index< VIndexDimension >::operator!=

(

const Self &

vec

)

const [inline]

Compare two indices.

Definition at line 208 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self itk::Index< VIndexDimension >::operator+

(

const OffsetType &

offset

)

const [inline]

Add an offset to an index.

Definition at line 132 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self itk::Index< VIndexDimension >::operator+

(

const SizeType &

size

)

const [inline]

Add a size to an index. This method models a random access Index.

Definition at line 90 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self& itk::Index< VIndexDimension >::operator+=

(

const OffsetType &

offset

)

[inline]

Increment index by an offset. This method models a random access Index.

Definition at line 143 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self& itk::Index< VIndexDimension >::operator+=

(

const SizeType &

size

)

[inline]

Increment index by a size. This method models a random access Index.

Definition at line 101 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const OffsetType itk::Index< VIndexDimension >::operator-

(

const Self &

vec

)

const [inline]

Subtract two indices. This method models a random access Index.

Definition at line 174 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self itk::Index< VIndexDimension >::operator-

(

const OffsetType &

off

)

const [inline]

Subtract an offset from an index.

Definition at line 163 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index, and itk::Offset< VOffsetDimension >::m_Offset.

template<unsigned int VIndexDimension = 2>

const Self itk::Index< VIndexDimension >::operator-

(

const SizeType &

size

)

const [inline]

Subtract a size from an index. This method models a random access Index.

Definition at line 111 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self& itk::Index< VIndexDimension >::operator-=

(

const OffsetType &

offset

)

[inline]

Decrement index by an offset. This method models a random access Index.

Definition at line 153 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

const Self& itk::Index< VIndexDimension >::operator-=

(

const SizeType &

size

)

[inline]

Decrement index by a size. This method models a random access Index.

Definition at line 122 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

bool itk::Index< VIndexDimension >::operator==

(

const Self &

vec

)

const [inline]

Compare two indices.

Definition at line 197 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

IndexValueType itk::Index< VIndexDimension >::operator[]

(

unsigned int

dim

)

const [inline]

Access an element of the index. Elements are numbered 0, ..., VIndexDimension-1. This version can only be an rvalue. No bounds checking is performed.

Definition at line 225 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

IndexValueType& itk::Index< VIndexDimension >::operator[]

(

unsigned int

dim

)

[inline]

Access an element of the index. Elements are numbered 0, ..., VIndexDimension-1. No bounds checking is performed.

Definition at line 219 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

void itk::Index< VIndexDimension >::SetElement	(	unsigned long	element,
		IndexValueType	val
	)			[inline]

Sets the value of one of the elements in the index. This method is mainly intended to facilitate the access to elements from Tcl and Python where C++ notation is not very convenient.

Warning:

No bound checking is performed

See also:

SetIndex()

GetElement()

Definition at line 245 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

template<unsigned int VIndexDimension = 2>

void itk::Index< VIndexDimension >::SetIndex

(

const IndexValueType

val[VIndexDimension]

)

[inline]

Set the index. Try to prototype this function so that val has to point to a block of memory that is the appropriate size.

See also:

GetIndex()

Definition at line 236 of file itkIndex.h.

References itk::Index< VIndexDimension >::m_Index.

---

Member Data Documentation

template<unsigned int VIndexDimension = 2>

IndexValueType itk::Index< VIndexDimension >::m_Index[VIndexDimension]

Index is an "aggregate" class. Its data is public (m_Index) allowing for fast and convenient instantiations/assignments.

The following syntax for assigning an index is allowed/suggested: Index<3> index = {5, 2, 7};

Definition at line 272 of file itkIndex.h.

Referenced by itk::Index< VIndexDimension >::Fill(), itk::Index< VIndexDimension >::GetBasisIndex(), itk::Index< VIndexDimension >::GetElement(), itk::Index< VIndexDimension >::GetIndex(), itk::Index< VIndexDimension >::operator *(), itk::Index< VIndexDimension >::operator!=(), itk::Functor::IndexLexicographicCompare< VIndexDimension >::operator()(), itk::Index< VIndexDimension >::operator+(), itk::Index< VIndexDimension >::operator+=(), itk::Index< VIndexDimension >::operator-(), itk::Index< VIndexDimension >::operator-=(), itk::Index< VIndexDimension >::operator==(), itk::Index< VIndexDimension >::operator[](), itk::Index< VIndexDimension >::SetElement(), and itk::Index< VIndexDimension >::SetIndex().

---

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

• itkIndex.h

---