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File indexing completed on 2024-10-17 22:59:00

 #include "RecoTracker/MkFitCore/interface/cms_common_macros.h"
 #include "RecoTracker/MkFitCMS/interface/MkStdSeqs.h"
 
 #include "RecoTracker/MkFitCore/interface/HitStructures.h"
 #include "RecoTracker/MkFitCore/interface/IterationConfig.h"
 #include "RecoTracker/MkFitCore/interface/MkJob.h"
 #include "RecoTracker/MkFitCore/interface/TrackStructures.h"
 
 #include "RecoTracker/MkFitCore/interface/binnor.h"
 
 namespace mkfit {
 
   namespace StdSeq {
 
     //=========================================================================
     // Hit processing
     //=========================================================================
 
     void loadDeads(EventOfHits &eoh, const std::vector<DeadVec> &deadvectors) {
       for (size_t il = 0; il < deadvectors.size(); il++) {
         eoh.suckInDeads(int(il), deadvectors[il]);
       }
     }
 
     // Loading hits in CMSSW from two "large multi-layer vectors".
     // orig_hitvectors[0] - pixels,
     // orig_hitvectors[1] - strips.
 
     void cmssw_LoadHits_Begin(EventOfHits &eoh, const std::vector<const HitVec *> &orig_hitvectors) {
       eoh.reset();
       for (int i = 0; i < eoh.nLayers(); ++i) {
         auto &&l = eoh[i];
         l.beginRegistrationOfHits(*orig_hitvectors[l.is_pixel() ? 0 : 1]);
       }
     }
 
     // Loop with LayerOfHits::registerHit(int idx) - it takes Hit out of original HitVec to
     // extract phi, r/z, and calculate qphifines
     //
     // Something like what is done in MkFitInputConverter::convertHits
     //
     // Problem is I don't know layers for each large-vector;
     // Also, layer is calculated for each detset when looping over the HitCollection
 
     void cmssw_LoadHits_End(EventOfHits &eoh) {
       for (int i = 0; i < eoh.nLayers(); ++i) {
         auto &&l = eoh[i];
         l.endRegistrationOfHits(false);
       }
     }
 
     //=========================================================================
     // Hit-index mapping / remapping
     //=========================================================================
 
     void cmssw_Map_TrackHitIndices(const EventOfHits &eoh, TrackVec &seeds) {
       for (auto &&track : seeds) {
         for (int i = 0; i < track.nTotalHits(); ++i) {
           const int hitidx = track.getHitIdx(i);
           const int hitlyr = track.getHitLyr(i);
           if (hitidx >= 0) {
             const auto &loh = eoh[hitlyr];
             track.setHitIdx(i, loh.getHitIndexFromOriginal(hitidx));
           }
         }
       }
     }
 
     void cmssw_ReMap_TrackHitIndices(const EventOfHits &eoh, TrackVec &out_tracks) {
       for (auto &&track : out_tracks) {
         for (int i = 0; i < track.nTotalHits(); ++i) {
           const int hitidx = track.getHitIdx(i);
           const int hitlyr = track.getHitLyr(i);
           if (hitidx >= 0) {
             const auto &loh = eoh[hitlyr];
             track.setHitIdx(i, loh.getOriginalHitIndex(hitidx));
           }
         }
       }
     }
 
     //=========================================================================
     // Seed cleaning (multi-iter)
     //=========================================================================
     int clean_cms_seedtracks_iter(TrackVec &seeds, const IterationConfig &itrcfg, const BeamSpot &bspot) {
       using Algo = TrackBase::TrackAlgorithm;
 
       const float etamax_brl = Config::c_etamax_brl;
       const float dpt_common = Config::c_dpt_common;
 
       const float dzmax_bh = itrcfg.sc_dzmax_bh;
       const float drmax_bh = itrcfg.sc_drmax_bh;
       const float dzmax_eh = itrcfg.sc_dzmax_eh;
       const float drmax_eh = itrcfg.sc_drmax_eh;
       const float dzmax_bl = itrcfg.sc_dzmax_bl;
       const float drmax_bl = itrcfg.sc_drmax_bl;
       const float dzmax_el = itrcfg.sc_dzmax_el;
       const float drmax_el = itrcfg.sc_drmax_el;
 
       const float ptmin_hpt = itrcfg.sc_ptthr_hpt;
 
       const float dzmax2_inv_bh = 1.f / (dzmax_bh * dzmax_bh);
       const float drmax2_inv_bh = 1.f / (drmax_bh * drmax_bh);
       const float dzmax2_inv_eh = 1.f / (dzmax_eh * dzmax_eh);
       const float drmax2_inv_eh = 1.f / (drmax_eh * drmax_eh);
       const float dzmax2_inv_bl = 1.f / (dzmax_bl * dzmax_bl);
       const float drmax2_inv_bl = 1.f / (drmax_bl * drmax_bl);
       const float dzmax2_inv_el = 1.f / (dzmax_el * dzmax_el);
       const float drmax2_inv_el = 1.f / (drmax_el * drmax_el);
 
       // Merge hits from overlapping seeds?
       // For now always true, we require extra hits after seed,
       // except for lowPtQuadStep, where we only merge hits for seeds at low pT and large pseudo-rapidity
       const bool merge_hits = true;  // itrcfg.merge_seed_hits_during_cleaning();
       const float ptmax_merge_lowPtQuad = 0.2;
       const float etamin_merge_lowPtQuad = 1.5;
 
       if (seeds.empty())
         return 0;
 
       const int ns = seeds.size();
 #ifdef DEBUG
       std::cout << "before seed cleaning " << seeds.size() << std::endl;
 #endif
       TrackVec cleanSeedTracks;
       cleanSeedTracks.reserve(ns);
       std::vector<bool> writetrack(ns, true);
 
       const float invR1GeV = 1.f / Config::track1GeVradius;
 
       std::vector<int> nHits(ns);
       std::vector<int> charge(ns);
       std::vector<float> oldPhi(ns);
       std::vector<float> pos2(ns);
       std::vector<float> eta(ns);
       std::vector<float> ctheta(ns);
       std::vector<float> invptq(ns);
       std::vector<float> pt(ns);
       std::vector<float> x(ns);
       std::vector<float> y(ns);
       std::vector<float> z(ns);
       std::vector<float> d0(ns);
       int i1, i2;  //for the sorting
 
       axis_pow2_u1<float, unsigned short, 16, 8> ax_phi(-Const::PI, Const::PI);
       axis<float, unsigned short, 8, 8> ax_eta(-3.0, 3.0, 30u);
       binnor<unsigned int, decltype(ax_phi), decltype(ax_eta), 24, 8> phi_eta_binnor(ax_phi, ax_eta);
 
       phi_eta_binnor.begin_registration(ns);
 
       for (int ts = 0; ts < ns; ts++) {
         const Track &tk = seeds[ts];
         nHits[ts] = tk.nFoundHits();
         charge[ts] = tk.charge();
         oldPhi[ts] = tk.momPhi();
         pos2[ts] = std::pow(tk.x(), 2) + std::pow(tk.y(), 2);
         eta[ts] = tk.momEta();
         ctheta[ts] = 1.f / std::tan(tk.theta());
         invptq[ts] = tk.charge() * tk.invpT();
         pt[ts] = tk.pT();
         x[ts] = tk.x();
         y[ts] = tk.y();
         z[ts] = tk.z();
         d0[ts] = tk.d0BeamSpot(bspot.x, bspot.y);
 
         phi_eta_binnor.register_entry_safe(oldPhi[ts], eta[ts]);
         // If one is sure values are *within* axis ranges: b.register_entry(oldPhi[ts], eta[ts]);
       }
 
       phi_eta_binnor.finalize_registration();
 
       for (int sorted_ts = 0; sorted_ts < ns; sorted_ts++) {
         int ts = phi_eta_binnor.m_ranks[sorted_ts];
 
         if (not writetrack[ts])
           continue;  // Note: this speed up prevents transitive masking (possibly marginal gain).
 
         const float oldPhi1 = oldPhi[ts];
         const float pos2_first = pos2[ts];
         const float eta1 = eta[ts];
         const float pt1 = pt[ts];
         const float invptq_first = invptq[ts];
 
         // To study some more details -- need EventOfHits for this
         int n_ovlp_hits_added = 0;
 
         auto phi_rng = ax_phi.from_R_rdr_to_N_bins(oldPhi[ts], 0.08f);
         auto eta_rng = ax_eta.from_R_rdr_to_N_bins(eta[ts], .1f);
 
         for (auto i_phi = phi_rng.begin; i_phi != phi_rng.end; i_phi = ax_phi.next_N_bin(i_phi)) {
           for (auto i_eta = eta_rng.begin; i_eta != eta_rng.end; i_eta = ax_eta.next_N_bin(i_eta)) {
             const auto cbin = phi_eta_binnor.get_content(i_phi, i_eta);
             for (auto i = cbin.first; i < cbin.end(); ++i) {
               int tss = phi_eta_binnor.m_ranks[i];
 
               if (not writetrack[ts])
                 continue;
               if (not writetrack[tss])
                 continue;
               if (tss == ts)
                 continue;
 
               const float pt2 = pt[tss];
 
               // Always require charge consistency. If different charge is assigned, do not remove seed-track
               if (charge[tss] != charge[ts])
                 continue;
 
               const float thisDPt = std::abs(pt2 - pt1);
               // Require pT consistency between seeds. If dpT is large, do not remove seed-track.
               if (thisDPt > dpt_common * pt1)
                 continue;
 
               const float eta2 = eta[tss];
               const float deta2 = std::pow(eta1 - eta2, 2);
 
               const float oldPhi2 = oldPhi[tss];
 
               const float pos2_second = pos2[tss];
               const float thisDXYSign05 = pos2_second > pos2_first ? -0.5f : 0.5f;
 
               const float thisDXY = thisDXYSign05 * sqrt(std::pow(x[ts] - x[tss], 2) + std::pow(y[ts] - y[tss], 2));
 
               const float invptq_second = invptq[tss];
 
               const float newPhi1 = oldPhi1 - thisDXY * invR1GeV * invptq_first;
               const float newPhi2 = oldPhi2 + thisDXY * invR1GeV * invptq_second;
 
               const float dphi = cdist(std::abs(newPhi1 - newPhi2));
 
               const float dr2 = deta2 + dphi * dphi;
 
               const float thisDZ = z[ts] - z[tss] - thisDXY * (ctheta[ts] + ctheta[tss]);
               const float dz2 = thisDZ * thisDZ;
 
               // Reject tracks within dR-dz elliptical window.
               // Adaptive thresholds, based on observation that duplicates are more abundant at large pseudo-rapidity and low track pT
               bool overlapping = false;
               if (std::abs(eta1) < etamax_brl) {
                 if (pt1 > ptmin_hpt) {
                   if (dz2 * dzmax2_inv_bh + dr2 * drmax2_inv_bh < 1.0f)
                     overlapping = true;
                 } else {
                   if (dz2 * dzmax2_inv_bl + dr2 * drmax2_inv_bl < 1.0f)
                     overlapping = true;
                 }
               } else {
                 if (pt1 > ptmin_hpt) {
                   if (dz2 * dzmax2_inv_eh + dr2 * drmax2_inv_eh < 1.0f)
                     overlapping = true;
                 } else {
                   if (dz2 * dzmax2_inv_el + dr2 * drmax2_inv_el < 1.0f)
                     overlapping = true;
                 }
               }
 
               if (overlapping) {
                 //Mark tss as a duplicate
                 i1 = ts;
                 i2 = tss;
                 if (d0[tss] > d0[ts])
                   writetrack[tss] = false;
                 else {
                   writetrack[ts] = false;
                   i2 = ts;
                   i1 = tss;
                 }
                 // Add hits from tk2 to the seed we are keeping.
                 // NOTE: We have a limit in Track::Status for the number of seed hits.
                 //       There is a check at entry and after adding of a new hit.
                 Track &tk = seeds[i1];
                 if (merge_hits && tk.nTotalHits() < Track::Status::kMaxSeedHits &&
                     (Algo(itrcfg.m_track_algorithm) != Algo::lowPtQuadStep ||
                      (pt1 < ptmax_merge_lowPtQuad && std::abs(eta1) > etamin_merge_lowPtQuad))) {
                   const Track &tk2 = seeds[i2];
                   //We are not actually fitting to the extra hits; use chi2 of 0
                   float fakeChi2 = 0.0;
 
                   for (int j = 0; j < tk2.nTotalHits(); ++j) {
                     int hitidx = tk2.getHitIdx(j);
                     int hitlyr = tk2.getHitLyr(j);
                     if (hitidx >= 0) {
                       bool unique = true;
                       for (int i = 0; i < tk.nTotalHits(); ++i) {
                         if ((hitidx == tk.getHitIdx(i)) && (hitlyr == tk.getHitLyr(i))) {
                           unique = false;
                           break;
                         }
                       }
                       if (unique) {
                         tk.addHitIdx(tk2.getHitIdx(j), tk2.getHitLyr(j), fakeChi2);
                         ++n_ovlp_hits_added;
                         if (tk.nTotalHits() >= Track::Status::kMaxSeedHits)
                           break;
                       }
                     }
                   }
                 }
                 if (n_ovlp_hits_added > 0)
                   tk.sortHitsByLayer();
               }
             }  //end of inner loop over tss
           }  //eta bin
         }  //phi bin
 
         if (writetrack[ts]) {
           cleanSeedTracks.emplace_back(seeds[ts]);
         }
       }
 
       seeds.swap(cleanSeedTracks);
 
 #ifdef DEBUG
       {
         const int ns2 = seeds.size();
         printf("Number of CMS seeds before %d --> after %d cleaning\n", ns, ns2);
 
         for (int it = 0; it < ns2; it++) {
           const Track &ss = seeds[it];
           printf("  %3i q=%+i pT=%7.3f eta=% 7.3f nHits=%i label=% i\n",
                  it,
                  ss.charge(),
                  ss.pT(),
                  ss.momEta(),
                  ss.nFoundHits(),
                  ss.label());
         }
       }
 #endif
 
 #ifdef DEBUG
       std::cout << "AFTER seed cleaning " << seeds.size() << std::endl;
 #endif
 
       return seeds.size();
     }
 
     namespace {
       CMS_SA_ALLOW struct register_seed_cleaners {
         register_seed_cleaners() {
           IterationConfig::register_seed_cleaner("phase1:default", clean_cms_seedtracks_iter);
         }
       } rsc_instance;
     }  // namespace
 
     //=========================================================================
     // Duplicate cleaning
     //=========================================================================
 
     void remove_duplicates(TrackVec &tracks) {
       tracks.erase(std::remove_if(tracks.begin(), tracks.end(), [](auto track) { return track.getDuplicateValue(); }),
                    tracks.end());
     }
 
     void clean_duplicates(TrackVec &tracks, const IterationConfig &) {
       const auto ntracks = tracks.size();
       float eta1, phi1, pt1, deta, dphi, dr2;
 
       if (ntracks == 0) {
         return;
       }
       for (auto itrack = 0U; itrack < ntracks - 1; itrack++) {
         auto &track = tracks[itrack];
         eta1 = track.momEta();
         phi1 = track.momPhi();
         pt1 = track.pT();
         for (auto jtrack = itrack + 1; jtrack < ntracks; jtrack++) {
           auto &track2 = tracks[jtrack];
           if (track.label() == track2.label())
             continue;
           if (track.algoint() != track2.algoint())
             continue;
 
           deta = std::abs(track2.momEta() - eta1);
           if (deta > Config::maxdEta)
             continue;
 
           dphi = std::abs(squashPhiMinimal(phi1 - track2.momPhi()));
           if (dphi > Config::maxdPhi)
             continue;
 
           float maxdR = Config::maxdR;
           float maxdRSquared = maxdR * maxdR;
           if (std::abs(eta1) > 2.5f)
             maxdRSquared *= 16.0f;
           else if (std::abs(eta1) > 1.44f)
             maxdRSquared *= 9.0f;
           dr2 = dphi * dphi + deta * deta;
           if (dr2 < maxdRSquared) {
             //Keep track with best score
             if (track.score() > track2.score())
               track2.setDuplicateValue(true);
             else
               track.setDuplicateValue(true);
             continue;
           } else {
             if (pt1 == 0)
               continue;
             if (track2.pT() == 0)
               continue;
 
             if (std::abs((1 / track2.pT()) - (1 / pt1)) < Config::maxdPt) {
               if (Config::useHitsForDuplicates) {
                 float numHitsShared = 0;
                 for (int ihit2 = 0; ihit2 < track2.nTotalHits(); ihit2++) {
                   const int hitidx2 = track2.getHitIdx(ihit2);
                   const int hitlyr2 = track2.getHitLyr(ihit2);
                   if (hitidx2 >= 0) {
                     auto const it = std::find_if(track.beginHitsOnTrack(),
                                                  track.endHitsOnTrack(),
                                                  [&hitidx2, &hitlyr2](const HitOnTrack &element) {
                                                    return (element.index == hitidx2 && element.layer == hitlyr2);
                                                  });
                     if (it != track.endHitsOnTrack())
                       numHitsShared++;
                   }
                 }
 
                 float fracHitsShared = numHitsShared / std::min(track.nFoundHits(), track2.nFoundHits());
                 //Only remove one of the tracks if they share at least X% of the hits (denominator is the shorter track)
                 if (fracHitsShared < Config::minFracHitsShared)
                   continue;
               }
               //Keep track with best score
               if (track.score() > track2.score())
                 track2.setDuplicateValue(true);
               else
                 track.setDuplicateValue(true);
             }  //end of if dPt
           }  //end of else
         }  //end of loop over track2
       }  //end of loop over track1
 
       remove_duplicates(tracks);
     }
 
     //=========================================================================
     // SHARED HITS DUPLICATE CLEANING
     //=========================================================================
 
     void clean_duplicates_sharedhits(TrackVec &tracks, const IterationConfig &itconf) {
       const float fraction = itconf.dc_fracSharedHits;
       const auto ntracks = tracks.size();
 
       std::vector<float> ctheta(ntracks);
       std::multimap<int, int> hitMap;
 
       for (auto itrack = 0U; itrack < ntracks; itrack++) {
         auto &trk = tracks[itrack];
         ctheta[itrack] = 1.f / std::tan(trk.theta());
         for (int i = 0; i < trk.nTotalHits(); ++i) {
           if (trk.getHitIdx(i) < 0)
             continue;
           int a = trk.getHitLyr(i);
           int b = trk.getHitIdx(i);
           hitMap.insert(std::make_pair(b * 1000 + a, i > 0 ? itrack : -itrack));  //negative for first hit in trk
         }
       }
 
       for (auto itrack = 0U; itrack < ntracks; itrack++) {
         auto &trk = tracks[itrack];
         auto phi1 = trk.momPhi();
         auto ctheta1 = ctheta[itrack];
 
         std::map<int, int> sharingMap;
         for (int i = 0; i < trk.nTotalHits(); ++i) {
           if (trk.getHitIdx(i) < 0)
             continue;
           int a = trk.getHitLyr(i);
           int b = trk.getHitIdx(i);
           auto range = hitMap.equal_range(b * 1000 + a);
           for (auto it = range.first; it != range.second; ++it) {
             if (std::abs(it->second) >= (int)itrack)
               continue;  // don't check your own hits (==) nor sym. checks (>)
             if (i == 0 && it->second < 0)
               continue;  // shared first - first is not counted
             sharingMap[std::abs(it->second)]++;
           }
         }
 
         for (const auto &elem : sharingMap) {
           auto &track2 = tracks[elem.first];
 
           // broad dctheta-dphi compatibility checks; keep mostly to preserve consistency with old results
           auto dctheta = std::abs(ctheta[elem.first] - ctheta1);
           if (dctheta > 1.)
             continue;
 
           auto dphi = std::abs(squashPhiMinimal(phi1 - track2.momPhi()));
           if (dphi > 1.)
             continue;
 
           if (elem.second >= std::min(trk.nFoundHits(), track2.nFoundHits()) * fraction) {
             if (trk.score() > track2.score())
               track2.setDuplicateValue(true);
             else
               trk.setDuplicateValue(true);
           }
         }  // end sharing hits loop
       }  // end trk loop
 
       remove_duplicates(tracks);
     }
 
     void clean_duplicates_sharedhits_pixelseed(TrackVec &tracks, const IterationConfig &itconf) {
       const float fraction = itconf.dc_fracSharedHits;
       const float drth_central = itconf.dc_drth_central;
       const float drth_obarrel = itconf.dc_drth_obarrel;
       const float drth_forward = itconf.dc_drth_forward;
       const auto ntracks = tracks.size();
 
       std::vector<float> ctheta(ntracks);
       for (auto itrack = 0U; itrack < ntracks; itrack++) {
         auto &trk = tracks[itrack];
         ctheta[itrack] = 1.f / std::tan(trk.theta());
       }
 
       float phi1, invpt1, dctheta, ctheta1, dphi, dr2;
       for (auto itrack = 0U; itrack < ntracks; itrack++) {
         auto &trk = tracks[itrack];
         phi1 = trk.momPhi();
         invpt1 = trk.invpT();
         ctheta1 = ctheta[itrack];
         for (auto jtrack = itrack + 1; jtrack < ntracks; jtrack++) {
           auto &track2 = tracks[jtrack];
           if (trk.label() == track2.label())
             continue;
 
           dctheta = std::abs(ctheta[jtrack] - ctheta1);
 
           if (dctheta > Config::maxdcth)
             continue;
 
           dphi = std::abs(squashPhiMinimal(phi1 - track2.momPhi()));
 
           if (dphi > Config::maxdphi)
             continue;
 
           float maxdRSquared = drth_central * drth_central;
           if (std::abs(ctheta1) > Config::maxcth_fw)
             maxdRSquared = drth_forward * drth_forward;
           else if (std::abs(ctheta1) > Config::maxcth_ob)
             maxdRSquared = drth_obarrel * drth_obarrel;
           dr2 = dphi * dphi + dctheta * dctheta;
           if (dr2 < maxdRSquared) {
             //Keep track with best score
             if (trk.score() > track2.score())
               track2.setDuplicateValue(true);
             else
               trk.setDuplicateValue(true);
             continue;
           }
 
           if (std::abs(track2.invpT() - invpt1) > Config::maxd1pt)
             continue;
 
           auto sharedCount = 0;
           auto sharedFirst = 0;
           const auto minFoundHits = std::min(trk.nFoundHits(), track2.nFoundHits());
 
           for (int i = 0; i < trk.nTotalHits(); ++i) {
             if (trk.getHitIdx(i) < 0)
               continue;
             const int a = trk.getHitLyr(i);
             const int b = trk.getHitIdx(i);
             for (int j = 0; j < track2.nTotalHits(); ++j) {
               if (track2.getHitIdx(j) < 0)
                 continue;
               const int c = track2.getHitLyr(j);
               const int d = track2.getHitIdx(j);
 
               //this is to count once shared matched hits (may be done more properly...)
               if (a == c && b == d)
                 sharedCount += 1;
               if (j == 0 && i == 0 && a == c && b == d)
                 sharedFirst += 1;
 
               if ((sharedCount - sharedFirst) >= ((minFoundHits - sharedFirst) * fraction))
                 continue;
             }
             if ((sharedCount - sharedFirst) >= ((minFoundHits - sharedFirst) * fraction))
               continue;
           }
 
           //selection here - 11percent fraction of shared hits to label a duplicate
           if ((sharedCount - sharedFirst) >= ((minFoundHits - sharedFirst) * fraction)) {
             if (trk.score() > track2.score())
               track2.setDuplicateValue(true);
             else
               trk.setDuplicateValue(true);
           }
         }
       }  //end loop one over tracks
 
       remove_duplicates(tracks);
     }
 
     namespace {
       CMS_SA_ALLOW struct register_duplicate_cleaners {
         register_duplicate_cleaners() {
           IterationConfig::register_duplicate_cleaner("phase1:clean_duplicates", clean_duplicates);
           IterationConfig::register_duplicate_cleaner("phase1:clean_duplicates_sharedhits",
                                                       clean_duplicates_sharedhits);
           IterationConfig::register_duplicate_cleaner("phase1:clean_duplicates_sharedhits_pixelseed",
                                                       clean_duplicates_sharedhits_pixelseed);
         }
       } rdc_instance;
     }  // namespace
 
     //=========================================================================
     // Quality filters
     //=========================================================================
 
     // quality filter for n hits with seed hit "penalty" for strip-based seeds
     //   this implicitly separates triplets and doublet seeds with glued layers
     template <class TRACK>
     bool qfilter_n_hits(const TRACK &t, const MkJob &j) {
       int seedHits = t.getNSeedHits();
       int seedReduction = (seedHits <= 5) ? 2 : 3;
       return t.nFoundHits() - seedReduction >= j.params_cur().minHitsQF;
     }
 
     // simple hit-count quality filter; used with pixel-based seeds
     template <class TRACK>
     bool qfilter_n_hits_pixseed(const TRACK &t, const MkJob &j) {
       return t.nFoundHits() >= j.params_cur().minHitsQF;
     }
 
     // layer-dependent quality filter
     // includes ad hoc tuning for phase-1
     template <class TRACK>
     bool qfilter_n_layers(const TRACK &t, const MkJob &j) {
       const BeamSpot &bspot = j.m_beam_spot;
       const TrackerInfo &trk_inf = j.m_trk_info;
       int enhits = t.nHitsByTypeEncoded(trk_inf);
       int npixhits = t.nPixelDecoded(enhits);
       int enlyrs = t.nLayersByTypeEncoded(trk_inf);
       int npixlyrs = t.nPixelDecoded(enlyrs);
       int nmatlyrs = t.nTotMatchDecoded(enlyrs);
       int llyr = t.getLastFoundHitLyr();
       int lplyr = t.getLastFoundPixelHitLyr();
       float invpt = t.invpT();
 
       // based on fr and eff vs pt (convert to native invpt)
       float invptmin = 1.43;  // min 1/pT (=1/0.7) for full filter on (npixhits<=3 .or. npixlyrs<=3)
       float d0BS = t.d0BeamSpot(bspot.x, bspot.y);
       float d0_max = 0.1;  // 1 mm, max for somewhat prompt
 
       // next-to-outermost pixel layers (almost): BPIX3 or FPIX1
       bool endsInsidePix = (llyr == 2 || llyr == 18 || llyr == 45);
       // not last pixel layers: BPIX[123] or FPIX[12]
       bool lastInsidePix = ((0 <= lplyr && lplyr < 3) || (18 <= lplyr && lplyr < 20) || (45 <= lplyr && lplyr < 47));
       // reject short tracks missing last pixel layer except for prompt-looking
       return !(((npixhits <= 3 || npixlyrs <= 3) && endsInsidePix &&
                 (invpt < invptmin || (invpt >= invptmin && std::abs(d0BS) > d0_max))) ||
                ((npixlyrs <= 3 && nmatlyrs <= 6) && lastInsidePix && llyr != lplyr && std::abs(d0BS) > d0_max));
     }
 
     /// quality filter tuned for pixelLess iteration during forward search
     // includes ad hoc tuning for phase-1
     template <class TRACK>
     bool qfilter_pixelLessFwd(const TRACK &t, const MkJob &j) {
       const BeamSpot &bspot = j.m_beam_spot;
       const TrackerInfo &tk_info = j.m_trk_info;
       float d0BS = t.d0BeamSpot(bspot.x, bspot.y);
       float d0_max = 0.05;  // 0.5 mm, max for somewhat prompt
 
       int encoded;
       encoded = t.nLayersByTypeEncoded(tk_info);
       int nLyrs = t.nTotMatchDecoded(encoded);
       encoded = t.nHitsByTypeEncoded(tk_info);
       int nHits = t.nTotMatchDecoded(encoded);
 
       // to subtract stereo seed layers to count just r-phi seed layers (better pt err)
       int seedReduction = (t.getNSeedHits() <= 5) ? 2 : 3;
 
       // based on fr and eff vs pt and eta (convert to native invpt and theta)
       float invpt = t.invpT();
       float invptmin = 1.11;  // =1/0.9
 
       float thetasym = std::abs(t.theta() - Const::PIOver2);
       float thetasymmin = 1.11;  // -> |eta|=1.45
 
       // accept longer tracks, reject too short and displaced
       return (((t.nFoundHits() - seedReduction >= 4 && invpt < invptmin) ||
                (t.nFoundHits() - seedReduction >= 3 && invpt > invptmin && thetasym <= thetasymmin) ||
                (t.nFoundHits() - seedReduction >= 4 && invpt > invptmin && thetasym > thetasymmin)) &&
               !((nLyrs <= 4 || nHits <= 4) && std::abs(d0BS) > d0_max && invpt < invptmin));
     }
 
     /// quality filter tuned for pixelLess iteration during backward search
     // includes ad hoc tuning for phase-1
     template <class TRACK>
     bool qfilter_pixelLessBkwd(const TRACK &t, const MkJob &j) {
       const BeamSpot &bspot = j.m_beam_spot;
       const TrackerInfo &tk_info = j.m_trk_info;
       float d0BS = t.d0BeamSpot(bspot.x, bspot.y);
       float d0_max = 0.1;  // 1 mm
 
       int encoded;
       encoded = t.nLayersByTypeEncoded(tk_info);
       int nLyrs = t.nTotMatchDecoded(encoded);
       encoded = t.nHitsByTypeEncoded(tk_info);
       int nHits = t.nTotMatchDecoded(encoded);
 
       // based on fr and eff vs pt and eta (convert to native invpt and theta)
       float invpt = t.invpT();
       float invptmin = 1.11;  // =1/0.9
 
       float thetasym = std::abs(t.theta() - Const::PIOver2);
       float thetasymmin_l = 0.80;  // -> |eta|=0.9
       float thetasymmin_h = 1.11;  // -> |eta|=1.45
 
       // reject too short or too displaced tracks
       return !(
           ((nLyrs <= 3 || nHits <= 3)) ||
           ((nLyrs <= 4 || nHits <= 4) && (invpt < invptmin || (thetasym > thetasymmin_l && std::abs(d0BS) > d0_max))) ||
           ((nLyrs <= 5 || nHits <= 5) && (invpt > invptmin && thetasym > thetasymmin_h && std::abs(d0BS) > d0_max)));
     }
 
     namespace {
       CMS_SA_ALLOW struct register_quality_filters {
         register_quality_filters() {
           IterationConfig::register_candidate_filter("phase1:qfilter_n_hits", qfilter_n_hits<TrackCand>);
           IterationConfig::register_candidate_filter("phase1:qfilter_n_hits_pixseed",
                                                      qfilter_n_hits_pixseed<TrackCand>);
           IterationConfig::register_candidate_filter("phase1:qfilter_n_layers", qfilter_n_layers<TrackCand>);
           IterationConfig::register_candidate_filter("phase1:qfilter_pixelLessFwd", qfilter_pixelLessFwd<TrackCand>);
           IterationConfig::register_candidate_filter("phase1:qfilter_pixelLessBkwd", qfilter_pixelLessBkwd<TrackCand>);
         }
       } rqf_instance;
     }  // namespace
 
     //=========================================================================
     // Track scoring
     //=========================================================================
 
     float trackScoreDefault(const int nfoundhits,
                             const int ntailholes,
                             const int noverlaphits,
                             const int nmisshits,
                             const float chi2,
                             const float pt,
                             const bool inFindCandidates) {
       float maxBonus = 8.0;
       float bonus = Config::validHitSlope_ * nfoundhits + Config::validHitBonus_;
       float penalty = Config::missingHitPenalty_;
       float tailPenalty = Config::tailMissingHitPenalty_;
       float overlapBonus = Config::overlapHitBonus_;
       if (pt < 0.9) {
         penalty *= inFindCandidates ? 1.7f : 1.5f;
         bonus = std::min(bonus * (inFindCandidates ? 0.9f : 1.0f), maxBonus);
       }
       float score =
           bonus * nfoundhits + overlapBonus * noverlaphits - penalty * nmisshits - tailPenalty * ntailholes - chi2;
       return score;
     }
 
     namespace {
       CMS_SA_ALLOW struct register_track_scorers {
         register_track_scorers() {
           IterationConfig::register_track_scorer("default", trackScoreDefault);
           IterationConfig::register_track_scorer("phase1:default", trackScoreDefault);
         }
       } rts_instance;
     }  // namespace
 
   }  // namespace StdSeq
 }  // namespace mkfit

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