itkDivideImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDivideImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2007/12/08 17:18:04 $
  Version:   $Revision: 1.13 $

  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 __itkDivideImageFilter_h
#define __itkDivideImageFilter_h

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

namespace itk
{
  
namespace Function {  
  
template< class TInput1, class TInput2, class TOutput>
class Div
{
public:
  Div() {};
  ~Div() {};
  bool operator!=( const Div & ) const
  {
    return false;
  }
  bool operator==( const Div & other ) const
  {
    return !(*this != other);
  }
  inline TOutput operator()( const TInput1 & A, const TInput2 & B)
  {
    if(B != (TInput2) 0)
      {
      return (TOutput)(A / B);
      }
    else
      {
      return NumericTraits<TOutput>::max(A);
      }
  }
}; 
}

template <class TInputImage1, class TInputImage2, class TOutputImage>
class ITK_EXPORT DivideImageFilter :
    public
BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage, 
                         Function::Div< 
  typename TInputImage1::PixelType, 
  typename TInputImage2::PixelType,
  typename TOutputImage::PixelType>   >
{
public:
  typedef DivideImageFilter  Self;

  typedef BinaryFunctorImageFilter<TInputImage1,TInputImage2,TOutputImage, 
                                   Function::Div< 
    typename TInputImage1::PixelType, 
    typename TInputImage2::PixelType,
    typename TOutputImage::PixelType>   
  > Superclass;

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

  itkNewMacro(Self);

  itkTypeMacro(DivideImageFilter, 
               BinaryFunctorImageFilter);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(IntConvertibleToInput2Check,
    (Concept::Convertible<int, typename TInputImage2::PixelType>));
  itkConceptMacro(Input1Input2OutputDivisionOperatorsCheck,
    (Concept::DivisionOperators<typename TInputImage1::PixelType,
                                typename TInputImage2::PixelType,
                                typename TOutputImage::PixelType>));

#endif

protected:
  DivideImageFilter() {}
  virtual ~DivideImageFilter() {}
  DivideImageFilter(const Self&) {}
  void operator=(const Self&) {}

};

} // end namespace itk


#endif

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