ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkExpNegativeImageAdaptor.h
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5  * Licensed under the Apache License, Version 2.0 (the "License");
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18 #ifndef __itkExpNegativeImageAdaptor_h
19 #define __itkExpNegativeImageAdaptor_h
20 
21 #include "itkImageAdaptor.h"
22 #include "vnl/vnl_math.h"
23 
24 namespace itk
25 {
26 namespace Accessor
27 {
39 template< class TInternalType, class TExternalType >
40 class ITK_EXPORT ExpNegativePixelAccessor
41 {
42 public:
45  typedef TExternalType ExternalType;
46 
49  typedef TInternalType InternalType;
50 
51  static inline void Set(TInternalType & output, const TExternalType & input)
52  { output = static_cast< TInternalType >( vcl_exp( -static_cast< double >( input ) ) ); }
53 
54  static inline TExternalType Get(const TInternalType & input)
55  { return static_cast< TExternalType >( vcl_exp( -static_cast< double >( input ) ) ); }
56 };
57 } // end namespace Accessor
58 
68 template< class TImage, class TOutputPixelType >
69 class ITK_EXPORT ExpNegativeImageAdaptor:public
70  ImageAdaptor< TImage, Accessor::ExpNegativePixelAccessor<
71  typename TImage::PixelType,
72  TOutputPixelType > >
73 {
74 public:
77  typedef ImageAdaptor<
79  typename TImage::PixelType, TOutputPixelType > > Superclass;
80 
83 
85  itkNewMacro(Self);
86 
89 protected:
92 private:
93  ExpNegativeImageAdaptor(const Self &); //purposely not implemented
94  void operator=(const Self &); //purposely not implemented
95 };
96 } // end namespace itk
98 
99 #endif
100