ITK  4.3.0
Insight Segmentation and Registration Toolkit
itkAtanImageFilter.h
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1 /*=========================================================================
2  *
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.
7  * You may obtain a copy of the License at
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9  * http://www.apache.org/licenses/LICENSE-2.0.txt
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11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
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14  * See the License for the specific language governing permissions and
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16  *
17  *=========================================================================*/
18 #ifndef __itkAtanImageFilter_h
19 #define __itkAtanImageFilter_h
20 
22 #include "vnl/vnl_math.h"
23 
24 namespace itk
25 {
26 namespace Functor
27 {
33 template< class TInput, class TOutput >
34 class Atan
35 {
36 public:
37  Atan() {}
38  ~Atan() {}
39  bool operator!=(const Atan &) const
40  {
41  return false;
42  }
44 
45  bool operator==(const Atan & other) const
46  {
47  return !( *this != other );
48  }
49 
50  inline TOutput operator()(const TInput & A) const
51  {
52  return static_cast< TOutput >( vcl_atan( static_cast< double >( A ) ) );
53  }
54 };
55 }
75 template< class TInputImage, class TOutputImage >
76 class ITK_EXPORT AtanImageFilter:
77  public
78  UnaryFunctorImageFilter< TInputImage, TOutputImage,
79  Functor::Atan<
80  typename TInputImage::PixelType,
81  typename TOutputImage::PixelType > >
82 {
83 public:
86  typedef UnaryFunctorImageFilter< TInputImage, TOutputImage,
88  typename TInputImage::PixelType,
89  typename TOutputImage::PixelType >
91 
94 
96  itkNewMacro(Self);
97 
99  itkTypeMacro(AtanImageFilter,
101 
102 #ifdef ITK_USE_CONCEPT_CHECKING
103 
104  itkConceptMacro( InputConvertibleToDoubleCheck,
106  itkConceptMacro( DoubleConvertibleToOutputCheck,
108 
110 #endif
111 
112 protected:
114  virtual ~AtanImageFilter() {}
115 
116 private:
117  AtanImageFilter(const Self &); //purposely not implemented
118  void operator=(const Self &); //purposely not implemented
119 };
120 } // end namespace itk
121 
122 #endif
123