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itkExpImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkExpImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2008-10-14 19:20:33 $
00007   Version:   $Revision: 1.24 $
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 __itkExpImageFilter_h
00018 #define __itkExpImageFilter_h
00019 
00020 #include "itkUnaryFunctorImageFilter.h"
00021 #include "vnl/vnl_math.h"
00022 
00023 #if defined(_MSC_VER) && (_MSC_VER >= 1300)
00024 #pragma function(exp)
00025 #endif
00026 
00027 namespace itk
00028 {
00029   
00038 namespace Function {  
00039 template< class TInput, class TOutput>
00040 class Exp
00041 {
00042 public:
00043   Exp() {};
00044   ~Exp() {};
00045   bool operator!=( const Exp & ) const
00046     {
00047     return false;
00048     }
00049   bool operator==( const Exp & other ) const
00050     {
00051     return !(*this != other);
00052     }
00053 #if defined(_MSC_VER) && (_MSC_VER == 1300)
00054 #pragma optimize("g",off)
00055 #endif
00056   inline TOutput operator()( const TInput & A )
00057     {
00058     return (TOutput)vcl_exp((double)A);
00059     }
00060 }; 
00061 }
00062 template <class TInputImage, class TOutputImage>
00063 class ITK_EXPORT ExpImageFilter :
00064     public
00065 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00066                         Function::Exp< 
00067   typename TInputImage::PixelType, 
00068   typename TOutputImage::PixelType>   >
00069 {
00070 public:
00072   typedef ExpImageFilter                                Self;
00073   typedef UnaryFunctorImageFilter<
00074     TInputImage,TOutputImage, 
00075     Function::Exp< typename TInputImage::PixelType, 
00076                    typename TOutputImage::PixelType> >  Superclass;
00077   typedef SmartPointer<Self>                            Pointer;
00078   typedef SmartPointer<const Self>                      ConstPointer;
00079 
00081   itkNewMacro(Self);
00082 
00084   itkTypeMacro(ExpImageFilter, 
00085                UnaryFunctorImageFilter);
00086 
00087 #ifdef ITK_USE_CONCEPT_CHECKING
00088 
00089   itkConceptMacro(InputConvertibleToDoubleCheck,
00090     (Concept::Convertible<typename TInputImage::PixelType, double>));
00091   itkConceptMacro(DoubleConvertibleToOutputCheck,
00092     (Concept::Convertible<double, typename TOutputImage::PixelType>));
00093 
00095 #endif
00096 
00097 protected:
00098   ExpImageFilter() {}
00099   virtual ~ExpImageFilter() {}
00100 
00101 private:
00102   ExpImageFilter(const Self&); //purposely not implemented
00103   void operator=(const Self&); //purposely not implemented
00104 
00105 
00106 };
00107 #if defined(_MSC_VER) && (_MSC_VER == 1300)
00108 #pragma optimize("",on)
00109 #endif
00110 } // end namespace itk
00111 
00112 
00113 #endif
00114 

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