itkNaryAddImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkNaryAddImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2005/03/25 02:01:17 $
  Version:   $Revision: 1.28 $

  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 __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 Array< TInput > & B)
  {
    AccumulatorType sum = NumericTraits< TOutput >::Zero;
    for( unsigned int i=0; i< B.size(); i++ )
      {
      sum += static_cast< TOutput >(B[i]);
      }       
    return static_cast<TOutput>( sum );
  }
  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 TInputImage::PixelType > > 
{
public:
  typedef NaryAddImageFilter  Self;
  typedef NaryFunctorImageFilter<TInputImage,TOutputImage, 
                                 Functor::Add1<typename TInputImage::PixelType,  
                                 typename TInputImage::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

---