itkConstRandomAccessNeighborhoodIterator.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkConstRandomAccessNeighborhoodIterator.h,v $
  Language:  C++
  Date:      $Date: 2002/09/11 19:57:12 $
  Version:   $Revision: 1.9 $

  Copyright (c) 2002 Insight 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 __itkConstRandomAccessNeighborhoodIterator_h
#define __itkConstRandomAccessNeighborhoodIterator_h

#include "itkConstNeighborhoodIterator.h"

namespace itk {

template<class TImage>
class ITK_EXPORT ConstRandomAccessNeighborhoodIterator
  :  public ConstNeighborhoodIterator<TImage>
{
public:
  typedef ConstRandomAccessNeighborhoodIterator Self;
  typedef ConstNeighborhoodIterator<TImage> Superclass;
  
  typedef typename Superclass::InternalPixelType InternalPixelType;
  typedef typename Superclass::PixelType  PixelType;
  typedef typename Superclass::SizeType   SizeType;
  typedef typename Superclass::SizeValueType SizeValueType;
  typedef typename Superclass::ImageType  ImageType;
  typedef typename Superclass::RegionType RegionType;
  typedef typename Superclass::IndexType  IndexType;
  typedef typename Superclass::IndexValueType IndexValueType;
  typedef typename Superclass::OffsetType OffsetType;
  typedef typename Superclass::OffsetValueType OffsetValueType;
  typedef typename Superclass::RadiusType RadiusType;
  typedef typename Superclass::NeighborhoodType NeighborhoodType;
  itkStaticConstMacro(Dimension, unsigned int, Superclass::Dimension);
  typedef typename Superclass::Iterator      Iterator;
  typedef typename Superclass::ConstIterator ConstIterator;
  typedef typename Superclass::ImageBoundaryConditionPointerType
   ImageBoundaryConditionPointerType;
    
  ConstRandomAccessNeighborhoodIterator()
    : Superclass()
    {}

  virtual ~ConstRandomAccessNeighborhoodIterator() {}
  
  ConstRandomAccessNeighborhoodIterator( const
                                         ConstRandomAccessNeighborhoodIterator
                                         &orig )
    : Superclass(orig)
    {}
  
  ConstRandomAccessNeighborhoodIterator(const SizeType &radius,
                       const ImageType * ptr,
                       const RegionType &region
                                        )
    : Superclass(radius, ptr, region)
    {}

  Self &operator=(const Self& orig)
    {
    Superclass::operator=(orig);
    return *this;
    }

  virtual void PrintSelf(std::ostream &, Indent) const;

  Self &operator+=(const OffsetType &);

  Self &operator-=(const OffsetType &);

  OffsetType operator-(const Self& b)
  {  return m_Loop - b.m_Loop;  }
  
};

template<class TImage>
inline ConstRandomAccessNeighborhoodIterator<TImage>
operator+(const ConstRandomAccessNeighborhoodIterator<TImage> &it,
          const typename ConstRandomAccessNeighborhoodIterator<TImage>
          ::OffsetType &ind)
{
  ConstRandomAccessNeighborhoodIterator<TImage> ret;
  ret = it;
  ret += ind;
  return ret;
}

template<class TImage>
inline ConstRandomAccessNeighborhoodIterator<TImage>
operator+(const typename ConstRandomAccessNeighborhoodIterator<TImage>
          ::OffsetType &ind,
          const ConstRandomAccessNeighborhoodIterator<TImage> &it)
{  return (it + ind); }

template<class TImage>
inline ConstRandomAccessNeighborhoodIterator<TImage>
operator-(const ConstRandomAccessNeighborhoodIterator<TImage> &it,
          const typename ConstRandomAccessNeighborhoodIterator<TImage>
          ::OffsetType &ind)
{
  ConstRandomAccessNeighborhoodIterator<TImage> ret;
  ret = it;
  ret -= ind;
  return ret;
}


  
} // namespace itk


#ifndef ITK_MANUAL_INSTANTIATION
#include "itkConstRandomAccessNeighborhoodIterator.txx"
#endif

#endif

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