itkVectorIndexSelectionCastImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkVectorIndexSelectionCastImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/08/09 20:04:14 $
  Version:   $Revision: 1.4 $

  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 __itkVectorIndexSelectionCastImageFilter_h
#define __itkVectorIndexSelectionCastImageFilter_h

#include "itkUnaryFunctorImageFilter.h"

namespace itk
{
  
namespace Functor {  
  
  template< class TInput, class TOutput>
    class VectorIndexSelectionCast
    {
    public:
      VectorIndexSelectionCast() {}
      ~VectorIndexSelectionCast() {}

      unsigned int GetIndex() const { return m_Index; }
      void SetIndex(unsigned int i) { m_Index = i; }

      inline TOutput operator()( const TInput & A )
      {
        return static_cast<TOutput>( A[m_Index] );
      }
      
    private:
      unsigned int m_Index;   
    }; 
}
 
template <class TInputImage, class TOutputImage>
class ITK_EXPORT VectorIndexSelectionCastImageFilter :
  public
  UnaryFunctorImageFilter<TInputImage,TOutputImage, 
  Functor::VectorIndexSelectionCast< typename TInputImage::PixelType, 
                         typename TOutputImage::PixelType>   >
  {
  public:
    typedef VectorIndexSelectionCastImageFilter Self;
    typedef UnaryFunctorImageFilter<TInputImage,TOutputImage, 
      Functor::VectorIndexSelectionCast< typename TInputImage::PixelType, 
      typename TOutputImage::PixelType> > Superclass;
    typedef SmartPointer<Self> Pointer;
    typedef SmartPointer<const Self> ConstPointer;
    
    itkNewMacro(Self);

    void SetIndex(unsigned int i) { this->GetFunctor().SetIndex(i); }
    unsigned int GetIndex(void) const { return this->GetFunctor().GetIndex(); }

  protected:
    VectorIndexSelectionCastImageFilter() {}
    virtual ~VectorIndexSelectionCastImageFilter() {}
    
  private:
    VectorIndexSelectionCastImageFilter(const Self&); //purposely not implemented
    void operator=(const Self&); //purposely not implemented
  };
 
} // end namespace itk


#endif

---