BasicMultiTrajectoryState.h

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#ifndef BasicMultiTrajectoryState_H
#define BasicMultiTrajectoryState_H

#include "TrackingTools/TrajectoryState/interface/BasicTrajectoryState.h"
#include "TrackingTools/TrajectoryState/interface/FreeTrajectoryState.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include "FWCore/Utilities/interface/Exception.h"

class BasicMultiTrajectoryState final : public BasicTrajectoryState {

  typedef TrajectoryStateOnSurface        TSOS;  
  
public:

  explicit BasicMultiTrajectoryState( const std::vector<TSOS>& tsvec); 

  BasicMultiTrajectoryState() {}


  void rescaleError(double factor);

  pointer clone() const override {
    return build<BasicMultiTrajectoryState>(*this);
  }

  using Components = BasicTrajectoryState::Components;
  Components const & components() const override {
    return theStates;
  }
  bool singleState() const override { return false;}


  virtual bool canUpdateLocalParameters() const override { return false; }
  virtual void update( const LocalTrajectoryParameters& p,
                       const Surface& aSurface,
                       const MagneticField* field,
                       const SurfaceSide side ) override;

  virtual void update(double weight,
                       const LocalTrajectoryParameters& p,
                       const LocalTrajectoryError& err,
                       const Surface& aSurface,
                       const MagneticField* field,
                       const SurfaceSide side) override;
private:

  Components theStates;

  void combine() dso_internal;

};

#endif