ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkAtan2ImageFilter.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 __itkAtan2ImageFilter_h
00019 #define __itkAtan2ImageFilter_h
00020 
00021 #include "itkBinaryFunctorImageFilter.h"
00022 #include "vnl/vnl_math.h"
00023 
00024 namespace itk
00025 {
00026 namespace Functor
00027 {
00033 template< class TInput1, class TInput2, class TOutput >
00034 class Atan2
00035 {
00036 public:
00037   Atan2() {}
00038   ~Atan2() {}
00039   bool operator!=(const Atan2 &) const
00040   {
00041     return false;
00042   }
00044 
00045   bool operator==(const Atan2 & other) const
00046   {
00047     return !( *this != other );
00048   }
00049 
00050   inline TOutput operator()(const TInput1 & A, const TInput2 & B) const
00051   {
00052     return static_cast< TOutput >(
00053              vcl_atan2(
00054                static_cast< double >( A ),
00055                static_cast< double >( B ) )
00056              );
00057   }
00058 };
00059 }
00084 template< class TInputImage1, class TInputImage2, class TOutputImage >
00085 class ITK_EXPORT Atan2ImageFilter:
00086   public
00087   BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
00088                             Functor::Atan2<
00089                               typename TInputImage1::PixelType,
00090                               typename TInputImage2::PixelType,
00091                               typename TOutputImage::PixelType >   >
00092 {
00093 public:
00095   typedef Atan2ImageFilter Self;
00096   typedef BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
00097                                     Functor::Atan2<
00098                                       typename TInputImage1::PixelType,
00099                                       typename TInputImage2::PixelType,
00100                                       typename TOutputImage::PixelType >
00101                                     >                                 Superclass;
00102 
00103   typedef SmartPointer< Self >       Pointer;
00104   typedef SmartPointer< const Self > ConstPointer;
00105 
00107   itkNewMacro(Self);
00108 
00110   itkTypeMacro(Atan2ImageFilter,
00111                BinaryFunctorImageFilter);
00112 
00113 #ifdef ITK_USE_CONCEPT_CHECKING
00114 
00115   itkConceptMacro( Input1ConvertibleToDoubleCheck,
00116                    ( Concept::Convertible< typename TInputImage1::PixelType, double > ) );
00117   itkConceptMacro( Input2ConvertibleToDoubleCheck,
00118                    ( Concept::Convertible< typename TInputImage2::PixelType, double > ) );
00119   itkConceptMacro( DoubleConvertibleToOutputCheck,
00120                    ( Concept::Convertible< double, typename TOutputImage::PixelType > ) );
00121 
00123 #endif
00124 protected:
00125   Atan2ImageFilter() {}
00126   virtual ~Atan2ImageFilter() {}
00127 private:
00128   Atan2ImageFilter(const Self &); //purposely not implemented
00129   void operator=(const Self &);   //purposely not implemented
00130 };
00131 } // end namespace itk
00133 
00134 #endif
00135