itkNaryAddImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkNaryAddImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/08/22 18:49:28 $
  Version:   $Revision: 1.24 $

  Copyright (c) 2002 Insight 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 __itkNaryAddImageFilter_h
#define __itkNaryAddImageFilter_h

#include "itkNaryFunctorImageFilter.h"
#include "itkNumericTraits.h"


namespace itk
{
  
namespace Functor {  
  
  template< class TInput, class TOutput >
  class Add1
  {
  public:
    typedef typename NumericTraits< TInput >::AccumulateType AccumulatorType;
    Add1() {}
    ~Add1() {}
    inline TOutput operator()( const TOutput & A, const TInput & B)
      {
      const AccumulatorType sum = A;
      return static_cast<TOutput>( sum + B );
      }
    bool operator != (const Add1&) const
      {
      return false;
      }
  }; 
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT NaryAddImageFilter :
    public
    NaryFunctorImageFilter<TInputImage,TOutputImage, 
    Functor::Add1<  typename TInputImage::PixelType, 
                    typename TOutputImage::PixelType>   >
{
public:
  typedef NaryAddImageFilter  Self;
  typedef NaryFunctorImageFilter<TInputImage,TOutputImage, 
    Functor::Add1< typename TInputImage::PixelType, 
                   typename TOutputImage::PixelType> >  Superclass;
  typedef SmartPointer<Self>   Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkNewMacro(Self);
  
protected:
  NaryAddImageFilter() {}
  virtual ~NaryAddImageFilter() {}

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

};

} // end namespace itk


#endif

---