ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkConstrainedValueAdditionImageFilter.h
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3  * Copyright Insight Software Consortium
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5  * Licensed under the Apache License, Version 2.0 (the "License");
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18 #ifndef __itkConstrainedValueAdditionImageFilter_h
19 #define __itkConstrainedValueAdditionImageFilter_h
20 
22 #include "itkNumericTraits.h"
23 
24 namespace itk
25 {
26 namespace Functor
27 {
33 template< class TInput1, class TInput2, class TOutput >
35 {
36 public:
40  {
41  return false;
42  }
44 
45  bool operator==(const ConstrainedValueAddition & other) const
46  {
47  return !( *this != other );
48  }
49 
50  inline TOutput operator()(const TInput1 & A,
51  const TInput2 & B) const
52  {
53  const double dA = static_cast< double >( A );
54  const double dB = static_cast< double >( B );
55  const double add = dA + dB;
56  const double cadd1 = ( add < NumericTraits< TOutput >::max() ) ?
58  const double cadd2 = ( cadd1 > NumericTraits< TOutput >::NonpositiveMin() ) ?
60 
61  return static_cast< TOutput >( cadd2 );
62  }
63 };
64 }
95 template< class TInputImage1, class TInputImage2, class TOutputImage >
97  public
98  BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
99  Functor::ConstrainedValueAddition<
100  typename TInputImage1::PixelType,
101  typename TInputImage2::PixelType,
102  typename TOutputImage::PixelType > >
103 {
104 public:
107  typedef BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
109  typename TInputImage1::PixelType,
110  typename TInputImage2::PixelType,
111  typename TOutputImage::PixelType > >
115 
117  itkNewMacro(Self);
118 
122 
123 #ifdef ITK_USE_CONCEPT_CHECKING
124 
125  itkConceptMacro( Input1ConvertibleToDoubleCheck,
127  itkConceptMacro( Input2ConvertibleToDoubleCheck,
129  itkConceptMacro( DoubleConvertibleToOutputCastCheck,
131  itkConceptMacro( DoubleLessThanOutputCheck,
133 
135 #endif
136 protected:
139 private:
140  ConstrainedValueAdditionImageFilter(const Self &); //purposely not implemented
141  void operator=(const Self &); //purposely not implemented
142 };
143 } // end namespace itk
145 
146 #endif
147