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  Program: GDCM (Grassroots DICOM). A DICOM library
  Module:  $URL$

  Copyright (c) 2006-2009 Mathieu Malaterre
  All rights reserved.
  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html 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 notice for more information.

#ifndef __gdcmDirectionCosines_h
#define __gdcmDirectionCosines_h

#include "gdcmTypes.h"

namespace gdcm
 * \brief class to handle DirectionCosines
00026 class GDCM_EXPORT DirectionCosines
  DirectionCosines(const double dircos[6]);
  // Cannot get the following signature to be wrapped with swig...
  //DirectionCosines(const double *dircos = 0 );

  /// Print
  void Print(std::ostream &) const;

  /// Compute Cross product
  void Cross(double z[3]) const;

  /// Compute Dot
  double Dot() const;

  /// Normalize in-place
  void Normalize();

  /// Make the class behave like a const double *
00048   operator const double* () const { return Values; }

  /// Return whether or not this is a valid direction cosines
  bool IsValid() const;

  bool SetFromString(const char *str);

  double CrossDot(DirectionCosines const &dc) const;

  double ComputeDistAlongNormal(const double ipp[3]) const;

  double Values[6];

} // end namespace gdcm

#endif //__gdcmDirectionCosines_h

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