text: /*=========================================================================
   *
   *  Copyright Insight Software Consortium
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *         http://www.apache.org/licenses/LICENSE-2.0.txt
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   *=========================================================================*/
  #ifndef itkComplexConjugateImageAdaptor_h
  #define itkComplexConjugateImageAdaptor_h
  
  #include "itkImageAdaptor.h"
  #include <complex>
  
  namespace itk
  {
  namespace Accessor
  {
  /** \class ComplexConjugatePixelAccessor
   * \brief Provide access to the conjugate of a std::complex<> value.
   *
   * \ingroup ImageAdaptors
   * \ingroup ITKImageAdaptors
   */
  template< typename TComplexType >
  class ComplexConjugatePixelAccessor
  {
  public:
    typedef TComplexType ExternalType;
    typedef TComplexType InternalType;
  
    static inline void Set(TComplexType & output, const TComplexType & input)
    {
      output = std::conj( input );
    }
  
    static inline TComplexType Get(const TComplexType & input)
    {
      return std::conj( input );
    }
  };
  } // end namespace Accessor
  
  /** \class ComplexConjugateImageAdaptor
   * \brief Presents each pixel of a complex image as its complex conjugate.
   *
   * \ingroup ImageAdaptors
   * \ingroup ITKImageAdaptors
   */
  template< typename TImage >
  class ComplexConjugateImageAdaptor:public
    ImageAdaptor< TImage,
                  Accessor::ComplexConjugatePixelAccessor< typename TImage::PixelType > >
  {
  public:
    /** Standard class typedefs. */
    typedef ComplexConjugateImageAdaptor Self;
    typedef ImageAdaptor< TImage, Accessor::ComplexConjugatePixelAccessor<
                            typename TImage::PixelType > >  Superclass;
  
    typedef SmartPointer< Self >       Pointer;
    typedef SmartPointer< const Self > ConstPointer;
  
    /** Method for creation through the object factory. */
    itkNewMacro(Self);
  
    /** Run-time type information (and related methods). */
    itkTypeMacro(ComplexConjugateImageAdaptor, ImageAdaptor);
  
  #ifdef ITK_USE_CONCEPT_CHECKING
    // Begin concept checking. */
    itkConceptMacro( InputConvertibleToComplex,
                     ( Concept::Convertible<
                         std::complex< typename NumericTraits< typename TImage::PixelType >::ValueType >,
                       typename TImage::PixelType > ) );
    // End concept checking. */
  #endif
  
  protected:
    ComplexConjugateImageAdaptor() {}
    virtual ~ComplexConjugateImageAdaptor() {}
  
  private:
    ComplexConjugateImageAdaptor(const Self &); //purposely not implemented
    void operator=(const Self &);               //purposely not implemented
  };
  } // end namespace itk
  
  #endif
  