itkRealAndImaginaryToComplexImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkRealAndImaginaryToComplexImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-02-24 19:03:15 $
  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 __itkRealAndImaginaryToComplexImageFilter_h
#define __itkRealAndImaginaryToComplexImageFilter_h

#include "itkBinaryFunctorImageFilter.h"

namespace itk
{
  
namespace Functor {  
  
template< class TInput1, class TInput2, class TOutput>
class RealAndImaginaryToComplex
{
public:
  RealAndImaginaryToComplex() {};
  ~RealAndImaginaryToComplex() {};
  bool operator!=( const RealAndImaginaryToComplex & ) const
    {
    return false;
    }
  bool operator==( const RealAndImaginaryToComplex & other ) const
    {
    return !(*this != other);
    }
  inline std::complex<TOutput> operator()( const TInput1 & A, const TInput2 & B) const
    {
    return std::complex<TOutput>( static_cast<TOutput>(A), static_cast<TOutput>(B));
    }
}; 
}

template <class TInputPixel1, class TInputPixel2, class TOutputPixel, unsigned int NDimension = 3>
class ITK_EXPORT RealAndImaginaryToComplexImageFilter :
    public BinaryFunctorImageFilter<
       Image < TInputPixel1, NDimension >,
       Image < TInputPixel2, NDimension >,
       Image < std::complex<TOutputPixel>, NDimension >, 
         Functor::RealAndImaginaryToComplex< 
            TInputPixel1, 
            TInputPixel2,
            TOutputPixel
                 > >
{
public:
  typedef RealAndImaginaryToComplexImageFilter      Self;
  typedef BinaryFunctorImageFilter<
    Image < TInputPixel1, NDimension >,
    Image < TInputPixel2, NDimension >,
    Image < std::complex<TOutputPixel>, NDimension >, 
      Functor::RealAndImaginaryToComplex< 
            TInputPixel1, 
            TInputPixel2,
            TOutputPixel > >                        Superclass;

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

  itkNewMacro(Self);

  itkTypeMacro(RealAndImaginaryToComplexImageFilter, BinaryFunctorImageFilter);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(Input1ConvertibleToDoubleCheck,
    (Concept::Convertible<TInputPixel1, double>));
  itkConceptMacro(Input2ConvertibleToDoubleCheck,
    (Concept::Convertible<TInputPixel2, double>));
  itkConceptMacro(DoubleConvertibleToOutputCheck,
    (Concept::Convertible<double, TOutputPixel>));

#endif

protected:
  RealAndImaginaryToComplexImageFilter() {}
  virtual ~RealAndImaginaryToComplexImageFilter() {}

private:
  RealAndImaginaryToComplexImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

};

} // end namespace itk


#endif