ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkSquareImageFilter.h
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1 /*=========================================================================
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3  * Copyright Insight Software Consortium
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
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14  * See the License for the specific language governing permissions and
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17  *=========================================================================*/
18 #ifndef __itkSquareImageFilter_h
19 #define __itkSquareImageFilter_h
20 
22 
23 namespace itk
24 {
36 namespace Functor
37 {
38 template< class TInput, class TOutput >
39 class Square
40 {
41 public:
43  Square() {}
44  ~Square() {}
45  bool operator!=(const Square &) const
46  {
47  return false;
48  }
49 
50  bool operator==(const Square & other) const
51  {
52  return !( *this != other );
53  }
54 
55  inline TOutput operator()(const TInput & A) const
56  {
57  const RealType ra = static_cast< RealType >( A );
58 
59  return static_cast< TOutput >( ra * ra );
60  }
61 };
62 }
63 template< class TInputImage, class TOutputImage >
64 class ITK_EXPORT SquareImageFilter:
65  public
66  UnaryFunctorImageFilter< TInputImage, TOutputImage,
67  Functor::Square< typename TInputImage::PixelType,
68  typename TOutputImage::PixelType > >
69 {
70 public:
74  TInputImage, TOutputImage,
75  Functor::Square< typename TInputImage::PixelType,
76  typename TOutputImage::PixelType > > Superclass;
77 
80 
82  itkNewMacro(Self);
83 
85  itkTypeMacro(SquareImageFilter,
87 
88 #ifdef ITK_USE_CONCEPT_CHECKING
89 
90  itkConceptMacro( InputHasNumericTraitsCheck,
92  itkConceptMacro( RealTypeMultiplyOperatorCheck,
94 
96 #endif
97 protected:
99  virtual ~SquareImageFilter() {}
100 private:
101  SquareImageFilter(const Self &); //purposely not implemented
102  void operator=(const Self &); //purposely not implemented
103 };
104 } // end namespace itk
106 
107 #endif
108