itkMaskNegatedImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkMaskNegatedImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2008-10-16 18:05:25 $
  Version:   $Revision: 1.8 $

  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 __itkMaskNegatedImageFilter_h
#define __itkMaskNegatedImageFilter_h

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


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

  MaskNegatedInput() {};
  ~MaskNegatedInput() {};
  bool operator!=( const MaskNegatedInput & ) const
    {
    return false;
    }
  bool operator==( const MaskNegatedInput & other ) const
    {
    return !(*this != other);
    }
  inline TOutput operator()( const TInput & A, const TMask & B)
    {
    if (B != NumericTraits< TMask >::Zero ) 
      {
      return NumericTraits< TOutput >::Zero;
      }
    else
      {
      return static_cast<TOutput>( A );
      }
    }
}; 

}
template <class TInputImage, class TMaskImage, class TOutputImage=TInputImage>
class ITK_EXPORT MaskNegatedImageFilter :
    public
BinaryFunctorImageFilter<TInputImage,TMaskImage,TOutputImage, 
                         Functor::MaskNegatedInput< 
  typename TInputImage::PixelType, 
  typename TMaskImage::PixelType,
  typename TOutputImage::PixelType>   >


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

  itkNewMacro(Self);

  itkTypeMacro(MaskNegatedImageFilter, 
               BinaryFunctorImageFilter);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(MaskEqualityComparableCheck,
    (Concept::EqualityComparable<typename TMaskImage::PixelType>));
  itkConceptMacro(InputConvertibleToOutputCheck,
    (Concept::Convertible<typename TInputImage::PixelType,
                          typename TOutputImage::PixelType>));

#endif

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

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

};

} // end namespace itk


#endif

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