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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: 2007-01-30 20:56:07 $
00007   Version:   $Revision: 1.10 $
00008 
00009   Copyright (c) Insight Software 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     return *this;
00077     }
00078 
00080   static unsigned int GetIteratorDimension() 
00081     {return TImage::ImageDimension;}
00082 
00084   virtual const IndexType GetIndex() = 0;
00085 
00087   virtual const PixelType & Get(void) const = 0;
00088 
00090   virtual bool IsAtEnd() = 0;
00091 
00093   virtual void operator++() = 0;
00094 
00096   ConditionalConstIterator();
00097 
00099   virtual ~ConditionalConstIterator();
00100 
00101 protected: //made protected so other iterators can access 
00103   //SmartPointer<const ImageType> m_Image;
00104   typename ImageType::ConstWeakPointer m_Image;
00105 
00107   RegionType m_Region;
00108 
00110   bool m_IsAtEnd;
00111 };
00112 
00113 } // end namespace itk
00114 
00115 // Define instantiation macro for this template.
00116 #define ITK_TEMPLATE_ConditionalConstIterator(_, EXPORT, x, y) namespace itk { \
00117   _(1(class EXPORT ConditionalConstIterator< ITK_TEMPLATE_1 x >)) \
00118   namespace Templates { typedef ConditionalConstIterator< ITK_TEMPLATE_1 x > \
00119                                             ConditionalConstIterator##y; } \
00120   }
00121 
00122 #if ITK_TEMPLATE_EXPLICIT
00123 # include "Templates/itkConditionalConstIterator+-.h"
00124 #endif
00125 
00126 #if ITK_TEMPLATE_TXX
00127 # include "itkConditionalConstIterator.txx"
00128 #endif
00129 
00130 #endif 
00131 

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