TwoBodyDecayTrajectory.h

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#ifndef Alignment_ReferenceTrajectories_TwoBodyDecayTrajectory_h
#define Alignment_ReferenceTrajectories_TwoBodyDecayTrajectory_h

#include "Alignment/ReferenceTrajectories/interface/ReferenceTrajectory.h"
#include "Alignment/ReferenceTrajectories/interface/TwoBodyDecayTrajectoryState.h"


namespace reco { class BeamSpot; }

class TwoBodyDecayTrajectory : public ReferenceTrajectoryBase
{

public:

  typedef TransientTrackingRecHit::ConstRecHitContainer ConstRecHitContainer;
  typedef std::pair< ConstRecHitContainer, ConstRecHitContainer > ConstRecHitCollection;

  TwoBodyDecayTrajectory( const TwoBodyDecayTrajectoryState & trajectoryState,
              const ConstRecHitCollection & recHits,
              const MagneticField* magField,
              MaterialEffects materialEffects,
              PropagationDirection propDir,
              bool hitsAreReverse,
              const reco::BeamSpot &beamSpot,
              bool useRefittedState,
              bool constructTsosWithErrors );

  TwoBodyDecayTrajectory( void );

  ~TwoBodyDecayTrajectory( void ) {}

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

  inline const std::pair< int, int > numberOfRecHits( void ) { return theNumberOfRecHits; }

private:

  bool construct( const TwoBodyDecayTrajectoryState & state,
          const ConstRecHitCollection & recHits,
          const MagneticField* field,
          MaterialEffects materialEffects,
          PropagationDirection propDir,
          const reco::BeamSpot &beamSpot,
          bool useRefittedState,
          bool constructTsosWithErrors );

  void constructTsosVecWithErrors( const ReferenceTrajectory& traj1,
                   const ReferenceTrajectory& traj2,
                   const MagneticField* field );

  void constructSingleTsosWithErrors( const TrajectoryStateOnSurface & tsos,
                      int iTsos,
                      const MagneticField* field );

  std::pair< int, int > theNumberOfRecHits;

};

#endif