MuonTrackSummaryHelperTool.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
#include "MuonTrackSummaryHelperTool.h"
 
#include <cassert>
#include <cmath>
#include <set>
 
#include "MuonCompetingRIOsOnTrack/CompetingMuonClustersOnTrack.h"
#include "MuonPrepRawData/CscClusterStatus.h"
#include "MuonRIO_OnTrack/CscClusterOnTrack.h"
#include "MuonRIO_OnTrack/MdtDriftCircleOnTrack.h"
#include "MuonRIO_OnTrack/MMClusterOnTrack.h"
#include "MuonRIO_OnTrack/MuonDriftCircleErrorStrategy.h"
#include "MuonReadoutGeometry/MdtReadoutElement.h"
#include "MuonReadoutGeometry/MuonDetectorManager.h"
#include "StoreGate/ReadHandle.h"
#include "TrkCompetingRIOsOnTrack/CompetingRIOsOnTrack.h"
#include "TrkDetElementBase/TrkDetElementBase.h"
#include "TrkMeasurementBase/MeasurementBase.h"
#include "TrkParameters/TrackParameters.h"
#include "TrkPseudoMeasurementOnTrack/PseudoMeasurementOnTrack.h"
#include "TrkSurfaces/Surface.h"
#include "TrkTrack/Track.h"
#include "TrkTrack/TrackStateOnSurface.h"
 
Muon::MuonTrackSummaryHelperTool::MuonTrackSummaryHelperTool(const std::string& t, const std::string& n, const IInterface* p) :
    base_class(t, n, p) {
    declareInterface<ITrackSummaryHelperTool>(this);
}
 
StatusCode Muon::MuonTrackSummaryHelperTool::initialize() {
    ATH_CHECK(m_DetectorManagerKey.initialize());
    ATH_CHECK(m_extrapolator.retrieve(EnableTool{m_calculateCloseHits && !m_extrapolator.empty()}));
    ATH_CHECK(m_slExtrapolator.retrieve(EnableTool{m_calculateCloseHits && !m_slExtrapolator.empty()}));
    ATH_CHECK(m_idHelperSvc.retrieve());
    ATH_CHECK(m_mdtKey.initialize());
    return StatusCode::SUCCESS;
}
 
void Muon::MuonTrackSummaryHelperTool::analyse(const Trk::Track& , const Trk::RIO_OnTrack* rot,
                                               const Trk::TrackStateOnSurface* tsos, std::vector<int>& information,
                                               std::bitset<Trk::numberOfDetectorTypes>& ) const {
    using namespace Trk;
    if (tsos->type(Trk::TrackStateOnSurface::Outlier)) return;  // ignore outliers
 
    Identifier id = rot->identify();
    ATH_MSG_DEBUG("Processing rot: " << m_idHelperSvc->toString(id));
    if (m_idHelperSvc->isRpc(id)) {
        if (m_idHelperSvc->rpcIdHelper().measuresPhi(id))
            increment(information[numberOfRpcPhiHits]);
        else
            increment(information[numberOfRpcEtaHits]);
    } else if (m_idHelperSvc->isCsc(id)) {
        if (m_idHelperSvc->cscIdHelper().measuresPhi(id))
            increment(information[numberOfCscPhiHits]);
        else {
            increment(information[numberOfCscEtaHits]);
            const CscClusterOnTrack* clus = dynamic_cast<const CscClusterOnTrack*>(rot);
            if (clus && ((clus->status() == Muon::CscStatusUnspoiled) || (clus->status() == Muon::CscStatusSplitUnspoiled)))
                increment(information[numberOfCscUnspoiltEtaHits]);
        }
    } else if (m_idHelperSvc->isTgc(id)) {
        if (m_idHelperSvc->tgcIdHelper().isStrip(id))
            increment(information[numberOfTgcPhiHits]);
        else
            increment(information[numberOfTgcEtaHits]);
    } else if (m_idHelperSvc->isMdt(id)) {
        increment(information[numberOfMdtHits]);
    } else if (m_idHelperSvc->issTgc(id)) {
        if (m_idHelperSvc->stgcIdHelper().measuresPhi(id)) increment(information[numberOfStgcPhiHits]);
        // we do not discriminate between pads or wires
        else
            increment(information[numberOfStgcEtaHits]);
    } else if (m_idHelperSvc->isMM(id)) {
        increment(information[numberOfMmHits]);
    } else {
        ATH_MSG_ERROR("Unknown muon detector type ");
        ATH_MSG_ERROR("Dumping TrackStateOnSurface " << *tsos);
    }
    }
 
void Muon::MuonTrackSummaryHelperTool::analyse(const Trk::Track& trk, const Trk::CompetingRIOsOnTrack* crot,
                                               const Trk::TrackStateOnSurface* tsos, std::vector<int>& information,
                                               std::bitset<Trk::numberOfDetectorTypes>& hitPattern) const {
    // For competing ROTs we *only* count hits that are on different layers.
    std::set<Identifier> layIds;
    for (unsigned int i = 0; i < crot->numberOfContainedROTs(); i++) {
        const Trk::RIO_OnTrack* rot = &crot->rioOnTrack(i);
        Identifier layId = m_idHelperSvc->layerId(rot->identify());
        ATH_MSG_DEBUG("ROT " << i << "\t LayerId=" << m_idHelperSvc->toString(layId));
        std::pair<std::set<Identifier>::iterator, bool> pr = layIds.insert(layId);
        if (pr.second) {
            // layer not seen before
            ATH_MSG_DEBUG("Have found hit on new layer. # of layers for this cROT currently=" << layIds.size());
            analyse(trk, rot, tsos, information, hitPattern);
        }
    }
}
 
void Muon::MuonTrackSummaryHelperTool::increment(int& type) {
    if (type < 0)
        type = 1;  // they all start off at -1, so can't just increment
    else
        ++type;
}
 
void Muon::MuonTrackSummaryHelperTool::searchForHoles(const Trk::Track& , std::vector<int>& ,
                                                      Trk::ParticleHypothesis ) const {
    ATH_MSG_WARNING("searchForHoles is not implemented in MuonTrackSummaryHelperTool");
}
 
void Muon::MuonTrackSummaryHelperTool::addDetailedTrackSummary(const Trk::Track& track,  Trk::TrackSummary& summary) const {
    if (summary.m_muonTrackSummary) {
        ATH_MSG_DEBUG("TrackSummary already has detailed muon track summary, not adding a new one");
        return;
    }
    const EventContext& ctx = Gaudi::Hive::currentContext();
    SG::ReadCondHandle<MuonGM::MuonDetectorManager> DetectorManagerHandle{m_DetectorManagerKey, ctx};
    const MuonGM::MuonDetectorManager* MuonDetMgr{*DetectorManagerHandle};
    if (MuonDetMgr == nullptr) {
        ATH_MSG_ERROR("Null pointer to the read MuonDetectorManager conditions object");
        return;
    }
 
    ATH_MSG_DEBUG("Adding detailed muon track summary");
    ATH_MSG_DEBUG(track.info());
    // loop over track and get chamber Identifiers
    const Trk::TrackStates* states = track.trackStateOnSurfaces();
    if (!states || states->empty()) { return; }
 
    Trk::MuonTrackSummary* muonTrackSummary = new Trk::MuonTrackSummary();
    Trk::MuonTrackSummary& trackSummary = *muonTrackSummary;
 
    Trk::MuonTrackSummary::ChamberHitSummary* currentChamberSummary = nullptr;
    const Trk::TrackParameters* currentChamberPars = nullptr;
 
    // loop over TSOSs
    Trk::TrackStates::const_iterator tsit = states->begin();
    Trk::TrackStates::const_iterator tsit_end = states->end();
    for (; tsit != tsit_end; ++tsit) {
        const Trk::TrackParameters* pars = (*tsit)->trackParameters();
 
        if ((*tsit)->type(Trk::TrackStateOnSurface::Scatterer)) {
            ++trackSummary.m_nscatterers;
            continue;
        }
 
        if ((*tsit)->type(Trk::TrackStateOnSurface::Hole)) {
            if (!pars) {
                ATH_MSG_WARNING(" Hole state without track parameters, cannot identify hole ");
                continue;
            }
            if (pars->associatedSurface().associatedDetectorElement()) {
                Identifier id = pars->associatedSurface().associatedDetectorElement()->identify();
                bool issTgc = m_idHelperSvc->issTgc(id);
                if (issTgc) {
                    // get the identifier for phi or eta holes
                    Identifier idh = pars->associatedSurface().associatedDetectorElementIdentifier();
                    if (idh.is_valid()) { id = idh; }
                }
                if (!id.is_valid() || !m_idHelperSvc->isMuon(id)) continue;
                Identifier chId = m_idHelperSvc->chamberId(id);
                // for is summary sTGC split STGC1 and STGC2
                if (issTgc) chId = m_idHelperSvc->detElId(id);
                bool isFirst = isFirstProjection(id);
                bool isMdt = m_idHelperSvc->isMdt(id);
 
                // check whether first chamber or new chamber
                if (!currentChamberSummary || currentChamberSummary->m_chId != chId) {
                    if (m_calculateCloseHits && currentChamberSummary && currentChamberPars) {
                        ATH_MSG_VERBOSE(" Calculating close hits (last hit a hole)");
                        calculateRoadHits(*currentChamberSummary, *currentChamberPars);
                    }
 
                    // given that we cannot separate eta/phi holes, redo the assignment before moving to the next chamber
                    if (currentChamberSummary && !currentChamberSummary->isMdt()) { updateHoleContent(*currentChamberSummary); }
 
                    ATH_MSG_VERBOSE(" Adding new chamber (holes) " << m_idHelperSvc->toString(id) << " " << *pars);
                    trackSummary.m_chamberHitSummary.emplace_back(chId, isMdt);
                    currentChamberSummary = &trackSummary.m_chamberHitSummary.back();
                    currentChamberPars = pars;
                }
                if (!issTgc) {
                    Trk::MuonTrackSummary::ChamberHitSummary::Projection& proj =
                        isFirst ? currentChamberSummary->m_first : currentChamberSummary->m_second;
                    ++proj.nholes;
                } else {
                    // sTgc holes keep track of phi and eta
                    if (m_idHelperSvc->measuresPhi(id)) {
                        ATH_MSG_VERBOSE(" counting sTGC phi hole ");
                        Trk::MuonTrackSummary::ChamberHitSummary::Projection& proj = currentChamberSummary->m_second;
                        ++proj.nholes;
                    } else {
                        ATH_MSG_VERBOSE(" counting sTGC eta hole ");
                        Trk::MuonTrackSummary::ChamberHitSummary::Projection& proj = currentChamberSummary->m_first;
                        ++proj.nholes;
                    }
                }
            }
            continue;
        }
 
        // check whether state is a measurement
        const Trk::MeasurementBase* meas = (*tsit)->measurementOnTrack();
        if (!meas) { continue; }
 
        const Trk::PseudoMeasurementOnTrack* pseudo = dynamic_cast<const Trk::PseudoMeasurementOnTrack*>(meas);
        if (pseudo) {
            ++trackSummary.m_npseudoMeasurements;
            continue;
        }
 
        if (!pars) {
            ATH_MSG_DEBUG("measurement without pars");
            continue;
        }
 
        Amg::Vector2D locPos;
        if (!meas->associatedSurface().globalToLocal(pars->position(), pars->position(), locPos)) {
            ATH_MSG_DEBUG(" localToGlobal failed !!!!! ");
            continue;
        }
        bool inBounds = true;
 
        Identifier id;
        std::set<Identifier> layIds;
        std::set<Identifier> goodLayIds;  // holds mdt hits that have not been deweighted
 
        // check whether ROT
        const Trk::RIO_OnTrack* rot = dynamic_cast<const Trk::RIO_OnTrack*>(meas);
        if (rot) {
            id = rot->identify();
            if (!m_idHelperSvc->isMuon(id)) continue;
 
            // bound checks
            double tol1 = 100.;
            double tol2 = 2 * tol1;
            if (!pseudo && m_idHelperSvc->isMdt(id)) tol1 = 5.;
 
            // we need a special bound check for MDTs so we cast to SL surface
            const Trk::StraightLineSurface* slSurf = dynamic_cast<const Trk::StraightLineSurface*>(&meas->associatedSurface());
            // we need a special bound check also for MMs to consider edge passivation
            const MMClusterOnTrack* mmClusterOnTrack = dynamic_cast<const MMClusterOnTrack*>(meas);
 
            if (slSurf) {
                // perform bound check only for second coordinate
                inBounds = slSurf->bounds().insideLoc2(locPos, tol2);
            } else if (mmClusterOnTrack) {
                // for MM, perform the bound check from the detector element
                inBounds = mmClusterOnTrack->detectorElement()->insideActiveBounds(id, locPos, tol1, tol2);
            } else {
                inBounds = meas->associatedSurface().insideBounds(locPos, tol1, tol2);
            }
 
            Identifier layId = m_idHelperSvc->layerId(id);
            layIds.insert(layId);
            const MdtDriftCircleOnTrack* mdtdc = dynamic_cast<const MdtDriftCircleOnTrack*>(rot);
            if (mdtdc) {
                MuonDriftCircleErrorStrategy errStrat = mdtdc->errorStrategy();
                if (!errStrat.creationParameter(MuonDriftCircleErrorStrategy::FixedError) &&
                    !errStrat.creationParameter(MuonDriftCircleErrorStrategy::StationError)) {
                    goodLayIds.insert(layId);
                }
            } else if (m_idHelperSvc->isCsc(id)) {
                const Muon::CscClusterOnTrack* cscClus = dynamic_cast<const Muon::CscClusterOnTrack*>(rot);
                if (cscClus->status() == Muon::CscClusterStatus::CscStatusUnspoiled ||
                    cscClus->status() == Muon::CscClusterStatus::CscStatusSplitUnspoiled)
                    goodLayIds.insert(layId);
            } else if (m_idHelperSvc->isMM(id)) {
                // MM quality requirements to be inserted here if needed
                goodLayIds.insert(layId);
            } else if (m_idHelperSvc->issTgc(id)) {
                // sTGC quality requirements to be inserted here if needed
                goodLayIds.insert(layId);
            }
        } else {
            const Muon::CompetingMuonClustersOnTrack* crot = dynamic_cast<const Muon::CompetingMuonClustersOnTrack*>(meas);
            if (crot) {
                if (crot->containedROTs().empty()) continue;
 
                // take id of first ROT
                id = crot->containedROTs().front()->identify();
 
                // count layers in competing rot
                std::vector<const Muon::MuonClusterOnTrack*>::const_iterator cl_it = crot->containedROTs().begin();
                std::vector<const Muon::MuonClusterOnTrack*>::const_iterator cl_it_end = crot->containedROTs().end();
                for (; cl_it != cl_it_end; ++cl_it) {
                    // get layer Identifier and insert it into set
                    Identifier layId = m_idHelperSvc->layerId((*cl_it)->identify());
                    layIds.insert(layId);
                    if (m_idHelperSvc->isCsc(id)) {
                        const Muon::CscClusterOnTrack* cscClus = dynamic_cast<const Muon::CscClusterOnTrack*>(rot);
                        if (cscClus) {
                          if (cscClus->status() == Muon::CscClusterStatus::CscStatusUnspoiled ||
                            cscClus->status() == Muon::CscClusterStatus::CscStatusSplitUnspoiled)
                            goodLayIds.insert(layId);
                        }
                    }
                }
            } else {
                continue;
            }
        }
        Identifier chId = m_idHelperSvc->chamberId(id);
        // for is summary sTGC split STGC1 and STGC2
        bool issTgc = m_idHelperSvc->issTgc(id);
        if (issTgc) chId = m_idHelperSvc->detElId(id);
        bool isFirst = isFirstProjection(id);
        bool isMdt = m_idHelperSvc->isMdt(id);
        ATH_MSG_VERBOSE(" Adding hit " << m_idHelperSvc->toString(id));

        if (!currentChamberSummary || currentChamberSummary->m_chId != chId) {
            if (m_calculateCloseHits && currentChamberSummary && currentChamberPars) {
                ATH_MSG_VERBOSE(" Calculating close hits (last hit a measurement)");
                calculateRoadHits(*currentChamberSummary, *currentChamberPars);
            }
 
            // given that we cannot separate eta/phi holes, redo the assignment before moving to the next chamber
            if (currentChamberSummary && !currentChamberSummary->isMdt()) { updateHoleContent(*currentChamberSummary); }
 
            ATH_MSG_VERBOSE(" Adding new chamber " << m_idHelperSvc->toString(id) << " " << *pars);
            trackSummary.m_chamberHitSummary.emplace_back(chId, isMdt);
            currentChamberSummary = &trackSummary.m_chamberHitSummary.back();
            currentChamberPars = pars;
        }
 
        Trk::MuonTrackSummary::ChamberHitSummary::Projection& proj =
            isFirst ? currentChamberSummary->m_first : currentChamberSummary->m_second;
 
        if ((*tsit)->type(Trk::TrackStateOnSurface::Outlier)) {
            // MDTs: count outlier as delta electron if rDrift < rTrack < innerTubeRadius
            if (isMdt && pars) {
                double rDrift = std::abs(meas->localParameters()[Trk::locR]);
                double rTrack = std::abs(pars->parameters()[Trk::locR]);
                double innerRadius = MuonDetMgr->getMdtReadoutElement(id)->innerTubeRadius();
                if (rTrack > rDrift && rTrack < innerRadius) {
                    ++proj.ndeltas;
                    continue;
                }
            }
            ++proj.noutliers;
 
        } else {
            proj.nhits += layIds.size();
            proj.ngoodHits += goodLayIds.size();
        }
        if (!inBounds && isMdt) proj.noutBounds++;
 
    }  // end of for loop over Track State on Surfaces

    if (m_calculateCloseHits && currentChamberSummary && currentChamberPars) {
        ATH_MSG_VERBOSE(" Calculating close hits (end of hit list)");
        calculateRoadHits(*currentChamberSummary, *currentChamberPars);
    }
 
    // given that we cannot separate eta/phi holes, redo the assignment before moving to the next chamber
    if (currentChamberSummary && !currentChamberSummary->isMdt()) { updateHoleContent(*currentChamberSummary); }
 
    summary.m_muonTrackSummary.reset(muonTrackSummary);
}
 
void Muon::MuonTrackSummaryHelperTool::updateHoleContent(Trk::MuonTrackSummary::ChamberHitSummary& chamberHitSummary) const {
    if (m_idHelperSvc->issTgc(chamberHitSummary.chamberId())) {
        ATH_MSG_DEBUG(" holes eta " << chamberHitSummary.etaProjection().nholes << " phi " << chamberHitSummary.phiProjection().nholes);
    }
 
    if (m_idHelperSvc->issTgc(chamberHitSummary.chamberId()) || m_idHelperSvc->isMM(chamberHitSummary.chamberId())) { return; }
 
    const EventContext& ctx = Gaudi::Hive::currentContext();
    SG::ReadCondHandle<MuonGM::MuonDetectorManager> DetectorManagerHandle{m_DetectorManagerKey, ctx};
    const MuonGM::MuonDetectorManager* MuonDetMgr{*DetectorManagerHandle};
    if (!MuonDetMgr) {
        ATH_MSG_ERROR("Null pointer to the read MuonDetectorManager conditions object");
        return;
    }
 
    bool isCsc = m_idHelperSvc->isCsc(chamberHitSummary.chamberId());
    int neta = isCsc ? 4 : 2;
    int nphi = isCsc ? 4 : 2;
    if (m_idHelperSvc->isTgc(chamberHitSummary.chamberId())) {
        const MuonGM::TgcReadoutElement* detEl = MuonDetMgr->getTgcReadoutElement(chamberHitSummary.chamberId());
        if (!detEl) {
            ATH_MSG_WARNING(" No detector element found for " << m_idHelperSvc->toStringChamber(chamberHitSummary.chamberId()));
            return;
        }
 
        // get list of layers with a hole
        neta = detEl->nGasGaps();
    }
 
    // code to recalculate the hole counts as they are not correct.
    // This is due to the fact that the identification of the layers goes via the readout element identifier
    // so it is not possible to separate eta and phi holes
    int nMisEta = neta - chamberHitSummary.etaProjection().nhits - chamberHitSummary.etaProjection().noutliers;
    int nMisPhi = nphi - chamberHitSummary.phiProjection().nhits - chamberHitSummary.phiProjection().noutliers;
    int nholes = chamberHitSummary.etaProjection().nholes + chamberHitSummary.phiProjection().nholes;
    if (nMisEta > 0 && nholes > 0) {
        chamberHitSummary.m_first.nholes = nMisEta;
        nholes -= nMisEta;
    }
    if (nMisPhi > 0 && nholes > 0) {
        chamberHitSummary.m_second.nholes = nholes;
        if (nholes != nMisPhi) {
            ATH_MSG_DEBUG("Inconsistent hole count: expected hits eta "
                          << neta << " phi " << nphi << " hits eta "
                          << chamberHitSummary.etaProjection().nhits + chamberHitSummary.etaProjection().noutliers << " phi "
                          << chamberHitSummary.phiProjection().nhits + chamberHitSummary.phiProjection().noutliers << " missed eta "
                          << nMisEta << " phi " << nMisPhi << " holes eta " << chamberHitSummary.etaProjection().nholes << " phi "
                          << chamberHitSummary.phiProjection().nholes << " recalculated phi holes " << nholes);
        }
    }
}
 
void Muon::MuonTrackSummaryHelperTool::calculateRoadHits(Trk::MuonTrackSummary::ChamberHitSummary& chamberHitSummary,
                                                         const Trk::TrackParameters& pars) const {
    const EventContext& ctx =  Gaudi::Hive::currentContext();
    bool isStraightLine = false;
    if (pars.parameters().rows() < 5) {  // no momentum parameter given
        isStraightLine = true;
    } else if (std::abs(pars.parameters()[4]) < 1e-8) {  // |p| > 1e8 MeV = 100 TeV
        isStraightLine = true;
    } else {
        // Determine if TrackParameters correspond to a straight track (the ugly way)
        if (pars.covariance()) {
            const AmgSymMatrix(5)& covMat = *pars.covariance();
            if (covMat.rows() < 5) {  // no momentum available
                isStraightLine = true;
            } else {
                // if no error on momentum given, assume no momentum was measured (extrapolator fails on zero error)
                if (std::abs(covMat(4, 4)) < 1e-20) isStraightLine = true;
            }
        }
    }
    const Trk::IExtrapolator* extrapolator{nullptr};
    if (m_extrapolator.isEnabled()) extrapolator = m_extrapolator.get();
    if (isStraightLine && m_slExtrapolator.isEnabled()) {
        extrapolator = m_slExtrapolator.get();
    }
    if (!extrapolator) return;
 
    ATH_MSG_DEBUG("road hits for chamber " << m_idHelperSvc->toString(chamberHitSummary.chamberId()));
 
    // currently treating MDTs only
    if (!chamberHitSummary.isMdt()) return;
 
    // loop over Mdt Prds (all hits in this chamber) and try to find prds of tubes with hits
    const Muon::MdtPrepDataCollection* mdtPrdCol = findMdtPrdCollection(chamberHitSummary.chamberId());
    if (!mdtPrdCol) {
        ATH_MSG_DEBUG(" Retrieval of MdtPrepDataCollection failed!! ");
        return;
    }
 
    if (isStraightLine) {
        ATH_MSG_VERBOSE("Doing straight line extrapolation to get hits in road");
    } else {
        ATH_MSG_VERBOSE("Doing curved track extrapolation to get hits in road");
    }
 
    std::set<Identifier> addedIds;
 
    Muon::MdtPrepDataCollection::const_iterator pit = mdtPrdCol->begin();
    Muon::MdtPrepDataCollection::const_iterator pit_end = mdtPrdCol->end();
    for (; pit != pit_end; ++pit) {
        const Muon::MdtPrepData& mdtPrd = **pit;  // hit
        const Identifier& id = mdtPrd.identify();
 
        bool isFirst = isFirstProjection(id);
        Trk::MuonTrackSummary::ChamberHitSummary::Projection& proj = isFirst ? chamberHitSummary.m_first : chamberHitSummary.m_second;
 
        const Trk::Surface& surf = mdtPrd.detectorElement()->surface(id);
 
        const Trk::TrackParameters* exPars = nullptr;
        if (pars.associatedSurface() == surf) {
            exPars = &pars;
        } else {
            exPars = extrapolator->extrapolateDirectly(ctx, 
                                                       pars, 
                                                       surf, 
                                                       Trk::anyDirection, false, Trk::muon).release();
            if (!exPars) {
                if (isStraightLine) {
                    ATH_MSG_DEBUG(" Straight line propagation to prd " << m_idHelperSvc->toString(id) << " failed");
                } else {
                    ATH_MSG_DEBUG(" Curved track propagation to prd " << m_idHelperSvc->toString(id) << " failed");
                }
                continue;
            }
        }
 
        // use exPars to get distance to wire
        double distance = exPars->parameters()[Trk::locR];
 
        // sometimes there is more than one hit in a tube,
        // which means there are two hits where the distance is the same but the tdc is different
        if (addedIds.count(id)) {
            ATH_MSG_DEBUG(" same tube hit, not adding to close hits in road");
        } else {
            // add all hits within the road width (defined in job options)
            if (std::abs(distance) < m_roadWidth) {
                ATH_MSG_VERBOSE("Hit ID  within road: " << m_idHelperSvc->toString(id) << " distance " << distance << " < " << m_roadWidth);
                ++proj.ncloseHits;
                addedIds.insert(id);
            } else {
                ATH_MSG_VERBOSE("Hit ID outside road: " << m_idHelperSvc->toString(id) << " distance " << distance
                                                        << " >= " << m_roadWidth);
            }
        }
        // to avoid double deleting when track is deleted, only delete
        // exPars when it's not the TrackParameters which was passed (pars)
        if (exPars != &pars) delete exPars;
    }
 
    // subtract the hits on the track in both projections:
    chamberHitSummary.m_first.ncloseHits -= chamberHitSummary.m_first.nhits;
    chamberHitSummary.m_second.ncloseHits -= chamberHitSummary.m_second.nhits;
 
    if (chamberHitSummary.m_first.ncloseHits < 0) {
        ATH_MSG_DEBUG("Number of hits in road < 0 in first projection: " << chamberHitSummary.m_first.ncloseHits
                                                                         << ", setting = 0. (nhits in first projection = "
                                                                         << chamberHitSummary.m_first.ncloseHits << ")");
        chamberHitSummary.m_first.ncloseHits = 0;
    }
 
    if (chamberHitSummary.m_second.ncloseHits < 0) {
        ATH_MSG_DEBUG("Number of hits in road < 0 in second projection: " << chamberHitSummary.m_second.ncloseHits
                                                                          << ", setting = 0. (nhits in second projection = "
                                                                          << chamberHitSummary.m_second.ncloseHits << ")");
        chamberHitSummary.m_second.ncloseHits = 0;
    }
}
 
bool Muon::MuonTrackSummaryHelperTool::isFirstProjection(const Identifier& id) const {
    if (!m_idHelperSvc->isMdt(id)) { return !m_idHelperSvc->measuresPhi(id); }
    return m_idHelperSvc->mdtIdHelper().multilayer(id) == 1;
}
 
const Muon::MdtPrepDataCollection* Muon::MuonTrackSummaryHelperTool::findMdtPrdCollection(const Identifier& chId) const {
    const EventContext& ctx = Gaudi::Hive::currentContext();
    SG::ReadHandle<Muon::MdtPrepDataContainer> mdtPrdContainer(m_mdtKey, ctx);
 
    if (!mdtPrdContainer.isValid()) {
        ATH_MSG_WARNING("Cannot retrieve mdtPrepDataContainer " << m_mdtKey);
        return nullptr;
    }
 
    if (!mdtPrdContainer.isPresent()) {
        ATH_MSG_DEBUG("No MDT PRD container available");
        return nullptr;
    }
 
    IdentifierHash hash_id;
    m_idHelperSvc->mdtIdHelper().get_module_hash(chId, hash_id);
 
    const auto *coll = mdtPrdContainer->indexFindPtr(hash_id);
    if (coll == nullptr) {
        ATH_MSG_DEBUG(" MdtPrepDataCollection for:   " << m_idHelperSvc->toStringChamber(chId) << "  not found in container ");
        return nullptr;
    }
    return coll;
}