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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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:
using ExternalType = TComplexType;
using InternalType = TComplexType;
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:
ITK_DISALLOW_COPY_AND_MOVE(ComplexConjugateImageAdaptor);
/** Standard class type aliases. */
using Self = ComplexConjugateImageAdaptor;
using Superclass = ImageAdaptor<TImage, Accessor::ComplexConjugatePixelAccessor<typename TImage::PixelType>>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ComplexConjugateImageAdaptor);
#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() = default;
~ComplexConjugateImageAdaptor() override = default;
};
} // end namespace itk
#endif
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