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itkConditionalConstIterator.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkConditionalConstIterator.h,v $
00005   Language:  C++
00006   Date:      $Date: 2002/09/11 19:39:03 $
00007   Version:   $Revision: 1.5 $
00008 
00009   Copyright (c) 2002 Insight Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkConditionalConstIterator_h
00018 #define __itkConditionalConstIterator_h
00019 
00020 #include "itkIndex.h"
00021 
00022 namespace itk
00023 {
00024 
00037 template<class TImage>
00038 class ConditionalConstIterator {
00039 public:
00041   typedef ConditionalConstIterator Self;
00042   
00047   itkStaticConstMacro(NDimension, unsigned int, TImage::ImageDimension);
00048 
00050   typedef typename TImage::IndexType  IndexType;
00051 
00053   typedef typename TImage::SizeType    SizeType;
00054 
00056   typedef typename TImage::RegionType    RegionType;
00057 
00059   typedef TImage   ImageType;
00060 
00062   typedef typename TImage::InternalPixelType   InternalPixelType;
00063 
00065   typedef typename TImage::PixelType   PixelType;
00066 
00068   virtual bool IsPixelIncluded(const IndexType & index) const = 0;
00069   
00072   Self &operator=(const Self& it)
00073   {
00074     m_Image = it.m_Image;     // copy the smart pointer
00075     m_Region = it.m_Region;   // copy the region
00076   }
00077   
00079   static unsigned int GetIteratorDimension() 
00080     {return TImage::ImageDimension;}
00081 
00083   virtual const IndexType GetIndex() = 0;
00084 
00086   virtual const PixelType & Get(void) const = 0;
00087   
00089   virtual bool IsAtEnd() = 0;
00090 
00092   virtual void operator++() = 0;
00093   
00095   ConditionalConstIterator();
00096 
00098   virtual ~ConditionalConstIterator();
00099 
00100 protected: //made protected so other iterators can access 
00102   //SmartPointer<const ImageType> m_Image;
00103   typename ImageType::ConstPointer m_Image;
00104 
00106   RegionType m_Region;
00107 
00109   bool m_IsAtEnd;
00110 };
00111 
00112 } // end namespace itk
00113 
00114 #ifndef ITK_MANUAL_INSTANTIATION
00115 #include "itkConditionalConstIterator.txx"
00116 #endif
00117 
00118 #endif 

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