itkMaskImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkMaskImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/05/17 18:37:35 $
  Version:   $Revision: 1.1 $

  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 __itkMaskImageFilter_h
#define __itkMaskImageFilter_h

#include "itkBinaryFunctorImageFilter.h"
#include "itkNumericTraits.h"


namespace itk
{
  
namespace Functor {  
  
  template< class TInput, class TMask, class TOutput >
  class MaskInput
  {
  public:
    typedef typename NumericTraits< TInput >::AccumulateType AccumulatorType;

    MaskInput() {};
    ~MaskInput() {};
    inline TOutput operator()( const TInput & A, const TMask & B)
      {
      if (B != 0) 
        {
        return static_cast<TOutput>( A );
        }
      else
        return NumericTraits< TOutput >::Zero;
        
      }
  }; 

}
template <class TInputImage, class TMaskImage, class TOutputImage>
class ITK_EXPORT MaskImageFilter :
    public
    BinaryFunctorImageFilter<TInputImage,TMaskImage,TOutputImage, 
    Functor::MaskInput< 
              typename TInputImage::PixelType, 
              typename TMaskImage::PixelType,
              typename TOutputImage::PixelType>   >


{
public:
  typedef MaskImageFilter  Self;
  typedef BinaryFunctorImageFilter<TInputImage,TMaskImage,TOutputImage, 
    Functor::MaskInput< 
              typename TInputImage::PixelType, 
              typename TMaskImage::PixelType,
              typename TOutputImage::PixelType>   
                >  Superclass;
  typedef SmartPointer<Self>   Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

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

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

};

} // end namespace itk


#endif

---