AxialTrackMerger.h

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2014 - Belle II Collaboration                             *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Viktor Trusov, Nils Braun, Oliver Frost                  *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
#pragma once
 
#include <tracking/trackFindingCDC/findlets/base/Findlet.h>
 
#include <tracking/trackFindingCDC/numerics/WithWeight.h>
#include <tracking/trackFindingCDC/utilities/MayBePtr.h>
 
#include <vector>
#include <string>
 
namespace Belle2 {
  namespace TrackFindingCDC {
    class CDCTrack;
    class CDCWireHit;
    class CDCTrajectory2D;
 
    class AxialTrackMerger : public Findlet<CDCTrack&, const CDCWireHit* const> {
 
    private:
      using Super = Findlet<CDCTrack&, const CDCWireHit* const>;
 
    public:
      std::string getDescription() final;
 
      void exposeParameters(ModuleParamList* moduleParamList, const std::string& prefix) final;
 
      void apply(std::vector<CDCTrack>& axialTracks, const std::vector<const CDCWireHit*>& axialWireHits) final;
 
    private:
      void doTracksMerging(std::vector<CDCTrack>& axialTracks,
                           const std::vector<const CDCWireHit*>& allAxialWireHits);
 
    private:
      template <class ACDCTracks>
      static WithWeight<MayBePtr<CDCTrack> > calculateBestTrackToMerge(CDCTrack& track, ACDCTracks& tracks);
 
      static double doTracksFitTogether(CDCTrack& track1, CDCTrack& track2);
 
      static void removeStrangeHits(double factor,
                                    std::vector<const CDCWireHit*>& wireHits,
                                    CDCTrajectory2D& trajectory);
 
      static void mergeTracks(CDCTrack& track1,
                              CDCTrack& track2,
                              const std::vector<const CDCWireHit*>& allAxialWireHits);
 
    private:
      double m_param_minFitProb = 0.85;
    };
  }
}