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

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

#include <itkIndex.h>

Inheritance diagram for itk::Index:

Inheritance graph
[legend]
List of all members.

Public Types

typedef Index Self
typedef Index< VIndexDimension > IndexType
typedef long IndexValueType
typedef Size< VIndexDimension > SizeType
typedef Offset< VIndexDimension > OffsetType
typedef OffsetType::OffsetValueType OffsetValueType

Public Methods

IndexValueTypeoperator[] (unsigned int dim)
IndexValueType operator[] (unsigned int dim) const
const IndexValueTypeGetIndex () const
void SetIndex (const IndexValueType val[VIndexDimension])
void SetElement (unsigned long element, IndexValueType val)
IndexValueType GetElement (unsigned long element)
void Fill (IndexValueType value)
const Self operator+ (const SizeType &size) const
const Selfoperator+= (const SizeType &size)
const Self operator+ (const OffsetType &offset) const
const Selfoperator+= (const OffsetType &offset)
const Selfoperator-= (const OffsetType &offset)
const Self operator- (const OffsetType &off) const
const OffsetType operator- (const Self &vec)
const Self operator * (const SizeType &vec)
bool operator== (const Self &vec) const
bool operator!= (const Self &vec) const

Static Public Methods

unsigned int GetIndexDimension ()
Self GetBasisIndex (unsigned int dim)

Public Attributes

IndexValueType m_Index [VIndexDimension]

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.

Definition at line 62 of file itkIndex.h.


Member Typedef Documentation

template<unsigned int VIndexDimension = 2>
typedef Index<VIndexDimension> itk::Index< VIndexDimension >::IndexType
 

Compatible Index and value typedef

Definition at line 68 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
typedef long itk::Index< VIndexDimension >::IndexValueType
 

Definition at line 69 of file itkIndex.h.

Referenced by itk::Index< VSetDimension >::GetElement().

template<unsigned int VIndexDimension = 2>
typedef Offset<VIndexDimension> itk::Index< VIndexDimension >::OffsetType
 

Compatible Offset and Offset value typedef.

Definition at line 78 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
typedef OffsetType::OffsetValueType itk::Index< VIndexDimension >::OffsetValueType
 

Definition at line 79 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
typedef Index itk::Index< VIndexDimension >::Self
 

Standard class typedefs.

Definition at line 65 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
typedef Size<VIndexDimension> itk::Index< VIndexDimension >::SizeType
 

Compatible Size typedef.

Definition at line 75 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 236 of file itkIndex.h.

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 252 of file itkIndex.h.

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 226 of file itkIndex.h.

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 202 of file itkIndex.h.

Referenced by itk::ImageBase< ::itk::GetImageDimension< TImage >::ImageDimension >::ComputeOffset().

template<unsigned int VIndexDimension = 2>
unsigned int itk::Index< VIndexDimension >::GetIndexDimension   [inline, static]
 

Get the dimension (size) of the index.

Definition at line 72 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
const Self itk::Index< VIndexDimension >::operator * const SizeType   vec [inline]
 

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

Definition at line 158 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
bool itk::Index< VIndexDimension >::operator!= const Self   vec const [inline]
 

Compare two indices.

Definition at line 180 of file itkIndex.h.

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 104 of file itkIndex.h.

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 83 of file itkIndex.h.

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 115 of file itkIndex.h.

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 94 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
const OffsetType itk::Index< VIndexDimension >::operator- const Self   vec [inline]
 

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

Definition at line 146 of file itkIndex.h.

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 135 of file itkIndex.h.

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 125 of file itkIndex.h.

template<unsigned int VIndexDimension = 2>
bool itk::Index< VIndexDimension >::operator== const Self   vec const [inline]
 

Compare two indices.

Definition at line 169 of file itkIndex.h.

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 197 of file itkIndex.h.

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 191 of file itkIndex.h.

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 217 of file itkIndex.h.

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 208 of file itkIndex.h.


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 convienent instantiations/assignments.

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

Definition at line 244 of file itkIndex.h.

Referenced by itk::Index< VSetDimension >::GetElement(), itk::Index< VSetDimension >::operator *(), itk::Index< VSetDimension >::operator+(), itk::Index< VSetDimension >::operator+=(), itk::Index< VSetDimension >::SetElement(), and itk::Index< VSetDimension >::SetIndex().


The documentation for this class was generated from the following file:
Generated at Fri May 21 01:30:05 2004 for ITK by doxygen 1.2.15 written by Dimitri van Heesch, © 1997-2000