TrackParabolicExtrapolator.h

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// $Id: TrackParabolicExtrapolator.h,v 1.1 2005/03/16 14:10:05 hernando Exp $
#ifndef TRACKPARABOLICEXTRAPOLATOR_H
#define TRACKPARABOLICEXTRAPOLATOR_H 1

// Include files
#include "TrackExtrapolators/TrackExtrapolator.h"

// Forward declaration
class IMagneticFieldSvc;

class TrackParabolicExtrapolator: public TrackExtrapolator 
{

public:
  TrackParabolicExtrapolator( const std::string& type, 
                              const std::string& name, 
                              const IInterface* parent);
  
  virtual ~TrackParabolicExtrapolator();
  
  virtual StatusCode initialize();
  

  virtual StatusCode propagate( State& state,
                                double z,
                                ParticleID pid = ParticleID(211) );
protected:

  virtual void updateTransportMatrix( const double dz, State& pState);

protected:

  double             m_ax;
  double             m_ay;
  HepVector3D        m_B;
  IMagneticFieldSvc* m_pIMF; 

};


#endif // TRACKPARABOLICEXTRAPOLATOR_H

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