ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkAcosImageFilter.h
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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 __itkAcosImageFilter_h
00019 #define __itkAcosImageFilter_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 Acos
00035 {
00036 public:
00037   Acos() {}
00038   ~Acos() {}
00039   bool operator!=(const Acos &) const
00040   {
00041     return false;
00042   }
00044 
00045   bool operator==(const Acos & other) const
00046   {
00047     return !( *this != other );
00048   }
00049 
00050   inline TOutput operator()(const TInput & A) const
00051   {
00052     return static_cast< TOutput >( vcl_acos( static_cast< double >( A ) ) );
00053   }
00054 };
00055 }
00056 
00079 template< class TInputImage, class TOutputImage >
00080 class ITK_EXPORT AcosImageFilter:
00081   public
00082   UnaryFunctorImageFilter< TInputImage, TOutputImage,
00083                            Functor::Acos<
00084                              typename TInputImage::PixelType,
00085                              typename TOutputImage::PixelType >   >
00086 {
00087 public:
00089   typedef AcosImageFilter Self;
00090   typedef UnaryFunctorImageFilter< TInputImage, TOutputImage,
00091                                    Functor::Acos< typename TInputImage::PixelType,
00092                                                   typename TOutputImage::PixelType > >  Superclass;
00093 
00094   typedef SmartPointer< Self >       Pointer;
00095   typedef SmartPointer< const Self > ConstPointer;
00096 
00098   itkNewMacro(Self);
00099 
00101   itkTypeMacro(AcosImageFilter,
00102                UnaryFunctorImageFilter);
00103 
00104 #ifdef ITK_USE_CONCEPT_CHECKING
00105 
00106   itkConceptMacro( InputCovertibleToDoubleCheck,
00107                    ( Concept::Convertible< typename TInputImage::PixelType, double > ) );
00108   itkConceptMacro( DoubleConvertibleToOutputCheck,
00109                    ( Concept::Convertible< double, typename TOutputImage::PixelType > ) );
00110 
00112 #endif
00113 protected:
00114   AcosImageFilter() {}
00115   virtual ~AcosImageFilter() {}
00116 private:
00117   AcosImageFilter(const Self &); //purposely not implemented
00118   void operator=(const Self &);  //purposely not implemented
00119 };
00120 } // end namespace itk
00122 
00123 #endif
00124