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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkComplexToImaginaryImageAdaptor.h,v $
Language: C++
Date: $Date: 2006-03-19 23:24:29 $
Version: $Revision: 1.4 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkComplexToImaginaryImageAdaptor_h
#define __itkComplexToImaginaryImageAdaptor_h
#include <itkImageAdaptor.h>
#include <complex>
namespace itk
{
namespace Accessor {
/** \class ComplexToImaginaryPixelAccessor
* \brief Give access to the Imaginary part of a std::complex<> value
*
* ComplexToImaginaryPixelAccessor is templated over an internal type and an
* external type representation. The internal type is an std::complex<T> and
* the external part is a type T. This class cast the input applies the funtion
* to it and cast the result according to the types defined as template
* parameters
*
* \ingroup ImageAdaptors
*/
template <class TInternalType, class TExternalType >
class ITK_EXPORT ComplexToImaginaryPixelAccessor
{
public:
/** External typedef. It defines the external aspect
* that this class will exhibit. */
typedef TExternalType ExternalType;
/** Internal typedef. It defines the internal imaginary
* representation of data. */
typedef TInternalType InternalType;
static inline void Set(TInternalType & output, const TExternalType & input)
{output = (TInternalType)(input);}
static inline TExternalType Get( const TInternalType & input )
{return (TExternalType)(input.imag());}
};
} // end namespace Accessor
/** \class ComplexToImaginaryImageAdaptor
* \brief Presents a complex image as being composed of imag() part of
* its pixels.
*
* Additional casting is performed according to the input and output image
* types following C++ default casting rules.
*
* \ingroup ImageAdaptors
*/
template <class TImage, class TOutputPixelType>
class ITK_EXPORT ComplexToImaginaryImageAdaptor : public
ImageAdaptor<TImage,
Accessor::ComplexToImaginaryPixelAccessor<
typename TImage::PixelType,
TOutputPixelType> >
{
public:
/** Standard class typedefs. */
typedef ComplexToImaginaryImageAdaptor Self;
typedef ImageAdaptor<TImage, Accessor::ComplexToImaginaryPixelAccessor<
typename TImage::PixelType,
TOutputPixelType> > 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( ComplexToImaginaryImageAdaptor, ImageAdaptor );
protected:
ComplexToImaginaryImageAdaptor() {}
virtual ~ComplexToImaginaryImageAdaptor() {}
private:
ComplexToImaginaryImageAdaptor(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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