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itkSqrtImageAdaptor.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkSqrtImageAdaptor.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-09-19 19:56:20 $
00007   Version:   $Revision: 1.14 $
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 __itkSqrtImageAdaptor_h
00018 #define __itkSqrtImageAdaptor_h
00019 
00020 #include <itkImageAdaptor.h>
00021 #include "vnl/vnl_math.h"
00022 
00023 namespace itk
00024 {
00025  
00026 namespace Accessor {
00037 template <class TInternalType, class TExternalType >
00038 class ITK_EXPORT SqrtPixelAccessor  
00039 {
00040 public:
00043   typedef TExternalType ExternalType;
00044 
00047   typedef TInternalType InternalType;
00048 
00049   static inline void Set(TInternalType & output, const TExternalType & input) 
00050     {output = (TInternalType)vcl_sqrt((double)input);}
00051 
00052   static inline TExternalType Get( const TInternalType & input ) 
00053     {return (TExternalType)vcl_sqrt((double)input);}
00054 };
00055 
00056 } // end namespace Accessor
00057  
00066 template <class TImage, class TOutputPixelType>
00067 class ITK_EXPORT SqrtImageAdaptor : public
00068       ImageAdaptor<TImage, Accessor::SqrtPixelAccessor<
00069                                       typename TImage::PixelType,
00070                                       TOutputPixelType>   >
00071 {
00072 public:
00074   typedef SqrtImageAdaptor                                 Self;
00075   typedef ImageAdaptor<TImage,Accessor::SqrtPixelAccessor<
00076                                        typename TImage::PixelType,
00077                                        TOutputPixelType> > Superclass;
00078   typedef SmartPointer<Self>                               Pointer;
00079   typedef SmartPointer<const Self>                         ConstPointer;
00080 
00082   itkNewMacro(Self);  
00083 
00085   itkTypeMacro( SqrtImageAdaptor, ImageAdaptor );
00086 
00087 protected:
00088   SqrtImageAdaptor() {}
00089   virtual ~SqrtImageAdaptor() {}
00090   
00091 private:
00092   SqrtImageAdaptor(const Self&); //purposely not implemented
00093   void operator=(const Self&); //purposely not implemented
00094 };
00095 
00096 } // end namespace itk
00097 
00098 #endif
00099 

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