freVectorToPhaseAccessor.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: freVectorToPhaseAccessor.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 _freVectorToPhaseAccessor_h
#define _freVectorToPhaseAccessor_h

#include "itkVector.h"

namespace FREE
{
namespace Accessor
{

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

  typedef   TVector     InternalType;

        typedef   double        ExternalType;
        
  inline void Set( InternalType & output, const ExternalType & input ) const
  { 
    ExternalType dAngle = input;
                if (!m_bOutputAsRad) dAngle = (output/360)*M_PI; //convert to radian

    output[0] = cos(dAngle);
    output[1] = sin(dAngle);
  }

  ExternalType Get( const InternalType & input ) const;

        inline void SetOutputAsRad(const bool& bAsRad)
        {
                m_bOutputAsRad = bAsRad;
        };

        inline bool GetOutputAsRad() const
        {
                return m_bOutputAsRad;
        };

        VectorToPhaseAccessor();
        ~VectorToPhaseAccessor();

private:
  bool m_bOutputAsRad;
};

} // namespace Accessor
} // namespace free

#endif

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