itkComplexConjugateImageAdaptor.h

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 *
 *  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
{
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

template< typename TImage >
class ComplexConjugateImageAdaptor:public
  ImageAdaptor< TImage,
                Accessor::ComplexConjugatePixelAccessor< typename TImage::PixelType > >
{
public:
  typedef ComplexConjugateImageAdaptor Self;
  typedef ImageAdaptor< TImage, Accessor::ComplexConjugatePixelAccessor<
                          typename TImage::PixelType > >  Superclass;

  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  itkNewMacro(Self);

  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