ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkAtanImageFilter.h
Go to the documentation of this file.
00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkAtanImageFilter_h
00019 #define __itkAtanImageFilter_h
00020 
00021 #include "itkUnaryFunctorImageFilter.h"
00022 #include "vnl/vnl_math.h"
00023 
00024 namespace itk
00025 {
00026 namespace Functor
00027 {
00033 template< class TInput, class TOutput >
00034 class Atan
00035 {
00036 public:
00037   Atan() {}
00038   ~Atan() {}
00039   bool operator!=(const Atan &) const
00040   {
00041     return false;
00042   }
00044 
00045   bool operator==(const Atan & other) const
00046   {
00047     return !( *this != other );
00048   }
00049 
00050   inline TOutput operator()(const TInput & A) const
00051   {
00052     return static_cast< TOutput >( vcl_atan( static_cast< double >( A ) ) );
00053   }
00054 };
00055 }
00075 template< class TInputImage, class TOutputImage >
00076 class ITK_EXPORT AtanImageFilter:
00077   public
00078   UnaryFunctorImageFilter< TInputImage, TOutputImage,
00079                            Functor::Atan<
00080                              typename TInputImage::PixelType,
00081                              typename TOutputImage::PixelType >   >
00082 {
00083 public:
00085   typedef AtanImageFilter Self;
00086   typedef UnaryFunctorImageFilter< TInputImage, TOutputImage,
00087                                    Functor::Atan<
00088                                      typename TInputImage::PixelType,
00089                                      typename TOutputImage::PixelType >
00090                                    >                                 Superclass;
00091 
00092   typedef SmartPointer< Self >       Pointer;
00093   typedef SmartPointer< const Self > ConstPointer;
00094 
00096   itkNewMacro(Self);
00097 
00099   itkTypeMacro(AtanImageFilter,
00100                UnaryFunctorImageFilter);
00101 
00102 #ifdef ITK_USE_CONCEPT_CHECKING
00103 
00104   itkConceptMacro( InputConvertibleToDoubleCheck,
00105                    ( Concept::Convertible< typename TInputImage::PixelType, double > ) );
00106   itkConceptMacro( DoubleConvertibleToOutputCheck,
00107                    ( Concept::Convertible< double, typename TOutputImage::PixelType > ) );
00108 
00110 #endif
00111 protected:
00112   AtanImageFilter() {}
00113   virtual ~AtanImageFilter() {}
00114 private:
00115   AtanImageFilter(const Self &); //purposely not implemented
00116   void operator=(const Self &);  //purposely not implemented
00117 };
00118 } // end namespace itk
00120 
00121 #endif
00122