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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkImageReverseIterator.h,v $
Language: C++
Date: $Date: 2005-08-14 02:53:07 $
Version: $Revision: 1.17 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkImageReverseIterator_h
#define __itkImageReverseIterator_h
#include "itkImageRegionReverseConstIterator.h"
#include "itkImageIteratorWithIndex.h"
namespace itk
{
/** \class ImageReverseIterator
* \brief A multi-dimensional image iterator designed to walk a specified
* region in reverse.
*
* This is a subclass of ImageReverseConstIterator that adds write-access
* functionality. Please see ImageReverseConstIterator for details.
*
* \par 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 http://www.itk.org.
*
* \ingroup ImageIterators
*
* \sa ImageConstIterator \sa ConditionalConstIterator
* \sa ConstNeighborhoodIterator \sa ConstShapedNeighborhoodIterator
* \sa ConstSliceIterator \sa CorrespondenceDataStructureIterator
* \sa FloodFilledFunctionConditionalConstIterator
* \sa FloodFilledImageFunctionConditionalConstIterator
* \sa FloodFilledImageFunctionConditionalIterator
* \sa FloodFilledSpatialFunctionConditionalConstIterator
* \sa FloodFilledSpatialFunctionConditionalIterator
* \sa ImageConstIterator \sa ImageConstIteratorWithIndex
* \sa ImageIterator \sa ImageIteratorWithIndex
* \sa ImageLinearConstIteratorWithIndex \sa ImageLinearIteratorWithIndex
* \sa ImageRandomConstIteratorWithIndex \sa ImageRandomIteratorWithIndex
* \sa ImageRegionConstIterator \sa ImageRegionConstIteratorWithIndex
* \sa ImageRegionExclusionConstIteratorWithIndex
* \sa ImageRegionExclusionIteratorWithIndex
* \sa ImageRegionIterator \sa ImageRegionIteratorWithIndex
* \sa ImageRegionReverseConstIterator \sa ImageRegionReverseIterator
* \sa ImageReverseConstIterator \sa ImageReverseIterator
* \sa ImageSliceConstIteratorWithIndex \sa ImageSliceIteratorWithIndex
* \sa NeighborhoodIterator \sa PathConstIterator \sa PathIterator
* \sa ShapedNeighborhoodIterator \sa SliceIterator
* \sa ImageConstIteratorWithIndex */
template<typename TImage>
class ITK_EXPORT ImageReverseIterator : public ImageRegionReverseConstIterator<TImage>
{
public:
/** Standard class typedefs. */
typedef ImageReverseIterator Self;
typedef ImageRegionReverseConstIterator<TImage> Superclass;
/** Types inherited from the Superclass */
typedef typename Superclass::IndexType IndexType;
typedef typename Superclass::IndexValueType IndexValueType;
typedef typename Superclass::SizeType SizeType;
typedef typename Superclass::SizeValueType SizeValueType;
typedef typename Superclass::OffsetType OffsetType;
typedef typename Superclass::OffsetValueType OffsetValueType;
typedef typename Superclass::RegionType RegionType;
typedef typename Superclass::ImageType ImageType;
typedef typename Superclass::PixelContainer PixelContainer;
typedef typename Superclass::PixelContainerPointer PixelContainerPointer;
typedef typename Superclass::InternalPixelType InternalPixelType;
typedef typename Superclass::PixelType PixelType;
typedef typename Superclass::AccessorType AccessorType;
/** Default constructor. Needed since we provide a cast constructor. */
ImageReverseIterator();
/** Constructor establishes an iterator to walk a particular image and a
* particular region of that image. */
ImageReverseIterator(ImageType *ptr, const RegionType& region);
/** Constructor that can be used to cast from an ImageIterator to an
* ImageReverseIterator. Many routines return an ImageIterator but for a
* particular task, you may want an ImageReverseIterator. Rather than
* provide overloaded APIs that return different types of Iterators, itk
* returns ImageIterators and uses constructors to cast from an
* ImageIterator to a ImageReverseIterator. */
ImageReverseIterator( const ImageIteratorWithIndex<TImage> &it);
/** Set the pixel value */
void Set( const PixelType & value) const
{ this->m_PixelAccessorFunctor.Set(* const_cast<InternalPixelType *>((this->m_Buffer+this->m_Offset)),value); }
/** Return a reference to the pixel
* This method will provide the fastest access to pixel
* data, but it will NOT support ImageAdaptors. */
PixelType & Value(void)
{ return *(this->m_Buffer+this->m_Offset); }
protected:
/** the construction from a const iterator is declared protected
in order to enforce const correctness. */
ImageReverseIterator( const ImageRegionReverseConstIterator<TImage> &it);
Self & operator=(const ImageRegionReverseConstIterator<TImage> & it);
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkImageReverseIterator.txx"
#endif
#endif
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