AxialTrackMerger.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#pragma once
 
#include <tracking/trackingUtilities/findlets/base/Findlet.h>
 
#include <tracking/trackingUtilities/numerics/WithWeight.h>
#include <tracking/trackingUtilities/utilities/MayBePtr.h>
 
#include <vector>
#include <string>
 
namespace Belle2 {
 
  namespace TrackingUtilities {
    class CDCTrack;
    class CDCWireHit;
    class CDCTrajectory2D;
  }
 
  namespace TrackFindingCDC {

    class AxialTrackMerger : public
      TrackingUtilities::Findlet<TrackingUtilities::CDCTrack&, const TrackingUtilities::CDCWireHit* const> {
 
    private:
      using Super = TrackingUtilities::Findlet<TrackingUtilities::CDCTrack&, const TrackingUtilities::CDCWireHit* const>;
 
    public:
      std::string getDescription() final;

      void exposeParameters(ModuleParamList* moduleParamList, const std::string& prefix) final;

      void apply(std::vector<TrackingUtilities::CDCTrack>& axialTracks,
                 const std::vector<const TrackingUtilities::CDCWireHit*>& axialWireHits) final;
 
    private:
      void doTracksMerging(std::vector<TrackingUtilities::CDCTrack>& axialTracks,
                           const std::vector<const TrackingUtilities::CDCWireHit*>& allAxialWireHits);
 
    private:
      template <class ACDCTracks>
      static TrackingUtilities::WithWeight<TrackingUtilities::MayBePtr<TrackingUtilities::CDCTrack> > calculateBestTrackToMerge(
        TrackingUtilities::CDCTrack& track, ACDCTracks& tracks);

      static double doTracksFitTogether(TrackingUtilities::CDCTrack& track1, TrackingUtilities::CDCTrack& track2);

      static void removeStrangeHits(double factor,
                                    std::vector<const TrackingUtilities::CDCWireHit*>& wireHits,
                                    TrackingUtilities::CDCTrajectory2D& trajectory);

      static void mergeTracks(TrackingUtilities::CDCTrack& track1,
                              TrackingUtilities::CDCTrack& track2,
                              const std::vector<const TrackingUtilities::CDCWireHit*>& allAxialWireHits);
 
    private:
      double m_param_minFitProb = 0.85;
    };
  }
}