MultiHitGeneratorFromChi2.h

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#ifndef MultiHitGeneratorFromChi2_H
#define MultiHitGeneratorFromChi2_H

#include "RecoTracker/TkSeedGenerator/interface/MultiHitGenerator.h"
#include "CombinedMultiHitGenerator.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "RecoTracker/TkSeedGenerator/interface/MultiHitGeneratorFromPairAndLayers.h"
#include "RecoPixelVertexing/PixelLowPtUtilities/interface/ClusterShapeHitFilter.h"
#include "RecoTracker/TransientTrackingRecHit/interface/TkTransientTrackingRecHitBuilder.h"

#include "DataFormats/TrackerRecHit2D/interface/BaseTrackerRecHit.h"
#include "DataFormats/TrackingRecHit/interface/mayown_ptr.h"

#include "MagneticField/UniformEngine/interface/UniformMagneticField.h"

#include <utility>
#include <vector>

class HitPairGeneratorFromLayerPair;

class dso_hidden MultiHitGeneratorFromChi2 final : public MultiHitGeneratorFromPairAndLayers {
  typedef CombinedMultiHitGenerator::LayerCacheType LayerCacheType;

public:
  MultiHitGeneratorFromChi2(const edm::ParameterSet& cfg);

  ~MultiHitGeneratorFromChi2() override;

  static void fillDescriptions(edm::ParameterSetDescription& desc);
  static const char* fillDescriptionsLabel() { return "multiHitFromChi2"; }

  void initES(const edm::EventSetup& es) override;

  void hitSets(const TrackingRegion& region,
               OrderedMultiHits& trs,
               const edm::Event& ev,
               const edm::EventSetup& es,
               SeedingLayerSetsHits::SeedingLayerSet pairLayers,
               std::vector<SeedingLayerSetsHits::SeedingLayer> thirdLayers) override;

  void hitSets(const TrackingRegion& region,
               OrderedMultiHits& trs,
               const edm::Event& ev,
               const edm::EventSetup& es,
               const HitDoublets& doublets,
               const std::vector<SeedingLayerSetsHits::SeedingLayer>& thirdLayers,
               LayerCacheType& layerCache,
               cacheHits& refittedHitStorage);

  void hitTriplets(const TrackingRegion& region,
                   OrderedMultiHits& result,
                   const edm::EventSetup& es,
                   const HitDoublets& doublets,
                   const RecHitsSortedInPhi** thirdHitMap,
                   const std::vector<const DetLayer*>& thirdLayerDetLayer,
                   const int nThirdLayers) override;

  void hitSets(const TrackingRegion& region,
               OrderedMultiHits& result,
               const edm::EventSetup& es,
               const HitDoublets& doublets,
               const RecHitsSortedInPhi** thirdHitMap,
               const std::vector<const DetLayer*>& thirdLayerDetLayer,
               const int nThirdLayers,
               cacheHits& refittedHitStorage);

private:
  using HitOwnPtr = mayown_ptr<BaseTrackerRecHit>;

  void refit2Hits(HitOwnPtr& hit0,
                  HitOwnPtr& hit1,
                  TrajectoryStateOnSurface& tsos0,
                  TrajectoryStateOnSurface& tsos1,
                  const TrackingRegion& region,
                  float nomField,
                  bool isDebug);
  /*
  void refit3Hits(HitOwnPtr & hit0,
          HitOwnPtr & hit1,
          HitOwnPtr & hit2,
          TrajectoryStateOnSurface& tsos0,
          TrajectoryStateOnSurface& tsos1,
          TrajectoryStateOnSurface& tsos2,
          float nomField, bool isDebug);
  */
private:
  const ClusterShapeHitFilter* filter;
  TkTransientTrackingRecHitBuilder const* builder;
  TkClonerImpl cloner;

  bool useFixedPreFiltering;
  float extraHitRZtolerance;
  float extraHitRPhitolerance;
  float extraZKDBox;
  float extraRKDBox;
  float extraPhiKDBox;
  float dphi;
  const MagneticField* bfield;
  UniformMagneticField ufield = 0.;
  float nomField;
  double nSigmaRZ, nSigmaPhi, fnSigmaRZ;
  bool chi2VsPtCut;
  double maxChi2;
  std::vector<double> pt_interv;
  std::vector<double> chi2_cuts;
  bool refitHits;
  std::string filterName_;
  std::string builderName_;

  bool useSimpleMF_;
  std::string mfName_;

  std::vector<int> detIdsToDebug;
};
#endif