freVectorTo2DProjectionAccessor.h

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

  Program:   F.R.E.E. - flexible registration evaluation engine
  Version:   v.1.0.0
  Date:      $Date: 2006/09/01 12:00:00 $
  Module:    $RCSfile: freVectorTo2DProjectionAccessor.h,v $
  Language:  C++



  Copyright (c) 2007 Ralf o Floca (Department of Medical Informatics,
  Institute for Medical Biometry and Informatics, University of Heidelberg,
  Germany). All rights reserved.
  See FREECopyright.txt or http://www.mi.med.uni-hd.de/free/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 _freVectorTo2DProjectionAccessor_h
#define _freVectorTo2DProjectionAccessor_h

#include "itkVector.h"

namespace FREE
{
namespace Accessor
{

template <class TVector>
class ITK_EXPORT VectorTo2DProjectionAccessor
{
public:
  typedef   VectorTo2DProjectionAccessor   Self;

  typedef   TVector     InternalType;

  typedef   itk::Vector<typename InternalType::ValueType,2>     ExternalType;
        
  inline void Set( InternalType & output, const ExternalType & input ) const
  { 
                output[m_ActiveDim1] = input[0];
                output[m_ActiveDim2] = input[1];
  }

  inline ExternalType Get( const InternalType & input ) const
  {
    ExternalType projection;
    projection[0] = input[m_ActiveDim1];
    projection[1] = input[m_ActiveDim2];
    return projection;
  }

        inline void SetActiveDimensions(const unsigned int& index1, const unsigned int& index2)
        {
    if (index1<index2)
    {
      m_ActiveDim1 = index1; 
      m_ActiveDim2 = index2; 
    }
    else
    {
      m_ActiveDim1 = index2; 
      m_ActiveDim2 = index1; 
    }
        };

        VectorTo2DProjectionAccessor();

private:
  unsigned int m_ActiveDim1;
  unsigned int m_ActiveDim2;
};

} // namespace Accessor
} // namespace free

#endif

---