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DualBzeroTrajectoryFactory.h

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#ifndef Alignment_ReferenceTrajectories_DualBzeroTrajectoryFactory_h
#define Alignment_ReferenceTrajectories_DualBzeroTrajectoryFactory_h

#include "Alignment/ReferenceTrajectories/interface/TrajectoryFactoryBase.h"



class DualBzeroTrajectoryFactory : public TrajectoryFactoryBase
{

public:

  DualBzeroTrajectoryFactory( const edm::ParameterSet & config );
  virtual ~DualBzeroTrajectoryFactory( void );

  virtual const ReferenceTrajectoryCollection trajectories( const edm::EventSetup & setup,
                                                            const ConstTrajTrackPairCollection & tracks ) const;

  virtual const ReferenceTrajectoryCollection trajectories( const edm::EventSetup& setup,
                                                            const ConstTrajTrackPairCollection& tracks,
                                                            const ExternalPredictionCollection& external ) const;

  virtual DualBzeroTrajectoryFactory* clone( void ) const { return new DualBzeroTrajectoryFactory( *this ); }

protected:

  struct DualBzeroTrajectoryInput
  {
    TrajectoryStateOnSurface refTsos;
    TransientTrackingRecHit::ConstRecHitContainer fwdRecHits;
    TransientTrackingRecHit::ConstRecHitContainer bwdRecHits;
  };

  const DualBzeroTrajectoryInput referenceStateAndRecHits( const ConstTrajTrackPair& track ) const;

  const TrajectoryStateOnSurface propagateExternal( const TrajectoryStateOnSurface& external,
                                                    const Surface& surface,
                                                    const MagneticField* magField  ) const;

  double theMass;
  double theMomentumEstimate;

};


#endif

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