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itkConstantBoundaryCondition.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkConstantBoundaryCondition.h,v $
00005   Language:  C++
00006   Date:      $Date: 2006-04-20 16:59:33 $
00007   Version:   $Revision: 1.19 $
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 __itkConstantBoundaryCondition_h
00018 #define __itkConstantBoundaryCondition_h
00019 #include "itkNeighborhood.h"
00020 #include "itkNumericTraits.h"
00021 #include "itkImageBoundaryCondition.h"
00022 
00023 namespace itk
00024 {
00025 
00059 template<class TImage>
00060 class ITK_EXPORT ConstantBoundaryCondition
00061   : public ImageBoundaryCondition<TImage>
00062 {
00063 public:
00065   typedef ConstantBoundaryCondition      Self;
00066   typedef ImageBoundaryCondition<TImage> Superclass;
00067 
00069   typedef typename Superclass::PixelType        PixelType;
00070   typedef typename Superclass::PixelPointerType PixelPointerType;
00071   typedef typename Superclass::IndexType        IndexType;
00072   typedef typename Superclass::OffsetType       OffsetType;
00073   typedef typename Superclass::NeighborhoodType NeighborhoodType;
00074 
00075   typedef typename Superclass::NeighborhoodAccessorFunctorType 
00076                                  NeighborhoodAccessorFunctorType;
00077 
00079   itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension);
00080 
00082   ConstantBoundaryCondition()
00083     { m_Constant = NumericTraits<PixelType>::Zero; }
00084 
00087   virtual PixelType operator()(const OffsetType&,
00088                                const OffsetType&,
00089                                const NeighborhoodType *) const
00090     { return m_Constant; }
00091 
00094   virtual PixelType operator()(
00095       const OffsetType& ,
00096       const OffsetType& ,
00097       const NeighborhoodType *,
00098       const NeighborhoodAccessorFunctorType & ) const
00099     { return m_Constant; }
00100 
00102   void SetConstant(const PixelType &c)
00103     {  m_Constant = c; }
00104 
00106   const PixelType &GetConstant() const
00107     {  return m_Constant;  }
00108 
00112   bool RequiresCompleteNeighborhood() { return false; }
00113 
00114 private:
00115   PixelType m_Constant;
00116 };
00117 
00118 } // end namespace itk
00119 
00120 #endif
00121 

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