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#ifndef GflashTrajectoryPoint_H
#define GflashTrajectoryPoint_H

#include "CLHEP/Geometry/Point3D.h"
#include "CLHEP/Geometry/Vector3D.h"
#include "SimGeneral/GFlash/interface/Gflash3Vector.h"

class GflashTrajectoryPoint {

public:
  //-------------------------
  // Constructor, destructor
  //-------------------------
  GflashTrajectoryPoint();

  GflashTrajectoryPoint(Gflash3Vector& position, Gflash3Vector& momentum, 
                        double pathLength);

  ~GflashTrajectoryPoint();

  double getPathLength() { return thePathLength; }
  Gflash3Vector& getPosition() { return thePosition; }
  Gflash3Vector& getMomentum() { return theMomentum; }
  Gflash3Vector  getOrthogonalUnitVector() { return theMomentum.orthogonal().unit(); }
  Gflash3Vector  getCrossUnitVector() { return theMomentum.cross(getOrthogonalUnitVector()).unit(); }

  void setPosition(const Gflash3Vector& position ) { thePosition = position; }
  void setMomentum(const Gflash3Vector& momentum ) { theMomentum = momentum; }
  void setPathLength(double pathLength ) { thePathLength = pathLength; }

private:
  Gflash3Vector thePosition;
  Gflash3Vector theMomentum;
  double thePathLength;
};

#endif