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File indexing completed on 2025-10-18 08:21:46 

0001 // This file is part of the ACTS project.
0002 //
0003 // Copyright (C) 2016 CERN for the benefit of the ACTS project
0004 //
0005 // This Source Code Form is subject to the terms of the Mozilla Public
0006 // License, v. 2.0. If a copy of the MPL was not distributed with this
0007 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
0008 
0009 #include "ActsExamples/Io/Root/RootAthenaDumpReader.hpp"
0010 
0011 #include "Acts/Definitions/Units.hpp"
0012 #include "Acts/EventData/SourceLink.hpp"
0013 #include "Acts/Geometry/GeometryIdentifier.hpp"
0014 #include "Acts/Utilities/Zip.hpp"
0015 #include "ActsExamples/EventData/Cluster.hpp"
0016 #include "ActsExamples/EventData/IndexSourceLink.hpp"
0017 #include "ActsExamples/EventData/SimParticle.hpp"
0018 #include <ActsExamples/Digitization/MeasurementCreation.hpp>
0019 
0020 #include <algorithm>
0021 
0022 #include <TChain.h>
0023 #include <boost/container/static_vector.hpp>
0024 
0025 using namespace Acts::UnitLiterals;
0026 
0027 namespace {
0028 
0029 /// In cases when there is built up a particle collection in an iterative way it
0030 /// can be way faster to build up a vector and afterwards use a special
0031 /// constructor to speed up the set creation.
0032 inline auto particleVectorToSet(
0033     std::vector<ActsExamples::SimParticle>& particles) {
0034   using namespace ActsExamples;
0035   auto cmp = [](const auto& a, const auto& b) {
0036     return a.particleId() == b.particleId();
0037   };
0038 
0039   std::ranges::sort(particles, detail::CompareParticleId{});
0040   particles.erase(std::unique(particles.begin(), particles.end(), cmp),
0041                   particles.end());
0042 
0043   return SimParticleContainer(boost::container::ordered_unique_range_t{},
0044                               particles.begin(), particles.end());
0045 }
0046 
0047 }  // namespace
0048 
0049 enum SpacePointType { ePixel = 1, eStrip = 2 };
0050 
0051 namespace ActsExamples {
0052 
0053 RootAthenaDumpReader::RootAthenaDumpReader(
0054     const RootAthenaDumpReader::Config& config, Acts::Logging::Level level)
0055     : IReader(),
0056       m_cfg(config),
0057       m_logger(Acts::getDefaultLogger(name(), level)) {
0058   if (m_cfg.inputfiles.empty()) {
0059     throw std::invalid_argument("Empty input file list");
0060   }
0061   if (m_cfg.treename.empty()) {
0062     throw std::invalid_argument("Missing tree name");
0063   }
0064 
0065   m_inputchain = std::make_shared<TChain>(m_cfg.treename.c_str());
0066 
0067   m_outputPixelSpacePoints.initialize(m_cfg.outputPixelSpacePoints);
0068   m_outputStripSpacePoints.initialize(m_cfg.outputStripSpacePoints);
0069   m_outputSpacePoints.initialize(m_cfg.outputSpacePoints);
0070   if (!m_cfg.onlySpacepoints) {
0071     m_outputMeasurements.initialize(m_cfg.outputMeasurements);
0072     m_outputClusters.initialize(m_cfg.outputClusters);
0073     if (!m_cfg.noTruth) {
0074       m_outputParticles.initialize(m_cfg.outputParticles);
0075       m_outputMeasParticleMap.initialize(m_cfg.outputMeasurementParticlesMap);
0076       m_outputParticleMeasMap.initialize(m_cfg.outputParticleMeasurementsMap);
0077     }
0078   }
0079 
0080   if (m_inputchain->GetBranch("SPtopStripDirection") == nullptr) {
0081     ACTS_WARNING("Additional SP strip features not available");
0082     m_haveStripFeatures = false;
0083   }
0084 
0085   // Set the branches
0086   m_inputchain->SetBranchAddress("run_number", &run_number);
0087   m_inputchain->SetBranchAddress("event_number", &event_number);
0088   m_inputchain->SetBranchAddress("nSE", &nSE);
0089   m_inputchain->SetBranchAddress("SEID", SEID);
0090 
0091   // Cluster features
0092   m_inputchain->SetBranchAddress("nCL", &nCL);
0093   m_inputchain->SetBranchAddress("CLindex", CLindex);
0094   m_inputchain->SetBranchAddress("CLhardware", &CLhardware);
0095   m_inputchain->SetBranchAddress("CLx", CLx);
0096   m_inputchain->SetBranchAddress("CLy", CLy);
0097   m_inputchain->SetBranchAddress("CLz", CLz);
0098   m_inputchain->SetBranchAddress("CLbarrel_endcap", CLbarrel_endcap);
0099   m_inputchain->SetBranchAddress("CLlayer_disk", CLlayer_disk);
0100   m_inputchain->SetBranchAddress("CLeta_module", CLeta_module);
0101   m_inputchain->SetBranchAddress("CLphi_module", CLphi_module);
0102   m_inputchain->SetBranchAddress("CLside", CLside);
0103   m_inputchain->SetBranchAddress("CLmoduleID", CLmoduleID);
0104   m_inputchain->SetBranchAddress("CLphis", &CLphis);
0105   m_inputchain->SetBranchAddress("CLetas", &CLetas);
0106   m_inputchain->SetBranchAddress("CLtots", &CLtots);
0107   m_inputchain->SetBranchAddress("CLloc_direction1", CLloc_direction1);
0108   m_inputchain->SetBranchAddress("CLloc_direction2", CLloc_direction2);
0109   m_inputchain->SetBranchAddress("CLloc_direction3", CLloc_direction3);
0110   m_inputchain->SetBranchAddress("CLJan_loc_direction1", CLJan_loc_direction1);
0111   m_inputchain->SetBranchAddress("CLJan_loc_direction2", CLJan_loc_direction2);
0112   m_inputchain->SetBranchAddress("CLJan_loc_direction3", CLJan_loc_direction3);
0113   m_inputchain->SetBranchAddress("CLpixel_count", CLpixel_count);
0114   m_inputchain->SetBranchAddress("CLcharge_count", CLcharge_count);
0115   m_inputchain->SetBranchAddress("CLloc_eta", CLloc_eta);
0116   m_inputchain->SetBranchAddress("CLloc_phi", CLloc_phi);
0117   m_inputchain->SetBranchAddress("CLglob_eta", CLglob_eta);
0118   m_inputchain->SetBranchAddress("CLglob_phi", CLglob_phi);
0119   m_inputchain->SetBranchAddress("CLeta_angle", CLeta_angle);
0120   m_inputchain->SetBranchAddress("CLphi_angle", CLphi_angle);
0121   m_inputchain->SetBranchAddress("CLnorm_x", CLnorm_x);
0122   m_inputchain->SetBranchAddress("CLnorm_y", CLnorm_y);
0123   m_inputchain->SetBranchAddress("CLnorm_z", CLnorm_z);
0124   m_inputchain->SetBranchAddress("CLlocal_cov", &CLlocal_cov);
0125   if (!m_cfg.noTruth) {
0126     m_inputchain->SetBranchAddress("CLparticleLink_eventIndex",
0127                                    &CLparticleLink_eventIndex);
0128     m_inputchain->SetBranchAddress("CLparticleLink_barcode",
0129                                    &CLparticleLink_barcode);
0130     m_inputchain->SetBranchAddress("CLbarcodesLinked", &CLbarcodesLinked);
0131     m_inputchain->SetBranchAddress("CLparticle_charge", &CLparticle_charge);
0132   }
0133 
0134   // Particle features
0135   if (!m_cfg.noTruth) {
0136     m_inputchain->SetBranchAddress("nPartEVT", &nPartEVT);
0137     m_inputchain->SetBranchAddress("Part_event_number", Part_event_number);
0138     m_inputchain->SetBranchAddress("Part_barcode", Part_barcode);
0139     m_inputchain->SetBranchAddress("Part_px", Part_px);
0140     m_inputchain->SetBranchAddress("Part_py", Part_py);
0141     m_inputchain->SetBranchAddress("Part_pz", Part_pz);
0142     m_inputchain->SetBranchAddress("Part_pt", Part_pt);
0143     m_inputchain->SetBranchAddress("Part_eta", Part_eta);
0144     m_inputchain->SetBranchAddress("Part_vx", Part_vx);
0145     m_inputchain->SetBranchAddress("Part_vy", Part_vy);
0146     m_inputchain->SetBranchAddress("Part_vz", Part_vz);
0147     m_inputchain->SetBranchAddress("Part_radius", Part_radius);
0148     m_inputchain->SetBranchAddress("Part_status", Part_status);
0149     m_inputchain->SetBranchAddress("Part_charge", Part_charge);
0150     m_inputchain->SetBranchAddress("Part_pdg_id", Part_pdg_id);
0151     m_inputchain->SetBranchAddress("Part_passed", Part_passed);
0152     m_inputchain->SetBranchAddress("Part_vProdNin", Part_vProdNin);
0153     m_inputchain->SetBranchAddress("Part_vProdNout", Part_vProdNout);
0154     m_inputchain->SetBranchAddress("Part_vProdStatus", Part_vProdStatus);
0155     m_inputchain->SetBranchAddress("Part_vProdBarcode", Part_vProdBarcode);
0156     m_inputchain->SetBranchAddress("Part_vParentID", &Part_vParentID);
0157     m_inputchain->SetBranchAddress("Part_vParentBarcode", &Part_vParentBarcode);
0158   }
0159 
0160   // Spacepoint features
0161   m_inputchain->SetBranchAddress("nSP", &nSP);
0162   m_inputchain->SetBranchAddress("SPindex", SPindex);
0163   m_inputchain->SetBranchAddress("SPx", SPx);
0164   m_inputchain->SetBranchAddress("SPy", SPy);
0165   m_inputchain->SetBranchAddress("SPz", SPz);
0166   m_inputchain->SetBranchAddress("SPCL1_index", SPCL1_index);
0167   m_inputchain->SetBranchAddress("SPCL2_index", SPCL2_index);
0168   m_inputchain->SetBranchAddress("SPisOverlap", SPisOverlap);
0169   if (m_haveStripFeatures) {
0170     m_inputchain->SetBranchAddress("SPradius", SPradius);
0171     m_inputchain->SetBranchAddress("SPcovr", SPcovr);
0172     m_inputchain->SetBranchAddress("SPcovz", SPcovz);
0173     m_inputchain->SetBranchAddress("SPhl_topstrip", SPhl_topstrip);
0174     m_inputchain->SetBranchAddress("SPhl_botstrip", SPhl_botstrip);
0175     m_inputchain->SetBranchAddress("SPtopStripDirection", &SPtopStripDirection);
0176     m_inputchain->SetBranchAddress("SPbottomStripDirection",
0177                                    &SPbottomStripDirection);
0178     m_inputchain->SetBranchAddress("SPstripCenterDistance",
0179                                    &SPstripCenterDistance);
0180     m_inputchain->SetBranchAddress("SPtopStripCenterPosition",
0181                                    &SPtopStripCenterPosition);
0182   }
0183 
0184   // These quantities are not used currently and thus commented out
0185   // I would like to keep the code, since it is always a pain to write it
0186   /*
0187   m_inputchain->SetBranchAddress("nTRK", &nTRK);
0188   m_inputchain->SetBranchAddress("TRKindex", TRKindex);
0189   m_inputchain->SetBranchAddress("TRKtrack_fitter", TRKtrack_fitter);
0190   m_inputchain->SetBranchAddress("TRKparticle_hypothesis",
0191                                  TRKparticle_hypothesis);
0192   m_inputchain->SetBranchAddress("TRKproperties", &TRKproperties);
0193   m_inputchain->SetBranchAddress("TRKpattern", &TRKpattern);
0194   m_inputchain->SetBranchAddress("TRKndof", TRKndof);
0195   m_inputchain->SetBranchAddress("TRKmot", TRKmot);
0196   m_inputchain->SetBranchAddress("TRKoot", TRKoot);
0197   m_inputchain->SetBranchAddress("TRKchiSq", TRKchiSq);
0198   m_inputchain->SetBranchAddress("TRKmeasurementsOnTrack_pixcl_sctcl_index",
0199                                  &TRKmeasurementsOnTrack_pixcl_sctcl_index);
0200   m_inputchain->SetBranchAddress("TRKoutliersOnTrack_pixcl_sctcl_index",
0201                                  &TRKoutliersOnTrack_pixcl_sctcl_index);
0202   m_inputchain->SetBranchAddress("TRKcharge", TRKcharge);
0203   m_inputchain->SetBranchAddress("TRKperigee_position", &TRKperigee_position);
0204   m_inputchain->SetBranchAddress("TRKperigee_momentum", &TRKperigee_momentum);
0205   m_inputchain->SetBranchAddress("TTCindex", TTCindex);
0206   m_inputchain->SetBranchAddress("TTCevent_index", TTCevent_index);
0207   m_inputchain->SetBranchAddress("TTCparticle_link", TTCparticle_link);
0208   m_inputchain->SetBranchAddress("TTCprobability", TTCprobability);
0209   m_inputchain->SetBranchAddress("nDTT", &nDTT);
0210   m_inputchain->SetBranchAddress("DTTindex", DTTindex);
0211   m_inputchain->SetBranchAddress("DTTsize", DTTsize);
0212   m_inputchain->SetBranchAddress("DTTtrajectory_eventindex",
0213                                  &DTTtrajectory_eventindex);
0214   m_inputchain->SetBranchAddress("DTTtrajectory_barcode",
0215                                  &DTTtrajectory_barcode);
0216   m_inputchain->SetBranchAddress("DTTstTruth_subDetType",
0217                                  &DTTstTruth_subDetType);
0218   m_inputchain->SetBranchAddress("DTTstTrack_subDetType",
0219                                  &DTTstTrack_subDetType);
0220   m_inputchain->SetBranchAddress("DTTstCommon_subDetType",
0221                                  &DTTstCommon_subDetType);
0222   */
0223 
0224   for (const auto& file : m_cfg.inputfiles) {
0225     ACTS_DEBUG("Adding file '" << file << "' to tree " << m_cfg.treename);
0226     m_inputchain->Add(file.c_str());
0227   }
0228 
0229   m_events = m_inputchain->GetEntries();
0230 
0231   ACTS_DEBUG("End of constructor. In total available events=" << m_events);
0232 }  // constructor
0233 
0234 SimParticleContainer RootAthenaDumpReader::readParticles() const {
0235   std::vector<SimParticle> particles;
0236   particles.reserve(nPartEVT);
0237 
0238   for (auto ip = 0; ip < nPartEVT; ++ip) {
0239     if (m_cfg.onlyPassedParticles && !static_cast<bool>(Part_passed[ip])) {
0240       continue;
0241     }
0242 
0243     SimBarcode dummyBarcode =
0244         SimBarcode()
0245             .withVertexPrimary(
0246                 static_cast<SimBarcode::PrimaryVertexId>(Part_event_number[ip]))
0247             .withVertexSecondary(static_cast<SimBarcode::SecondaryVertexId>(
0248                 Part_barcode[ip] < s_maxBarcodeForPrimary ? 0 : 1))
0249             .withParticle(
0250                 static_cast<SimBarcode::ParticleId>(Part_barcode[ip]));
0251     SimParticleState particle(dummyBarcode,
0252                               static_cast<Acts::PdgParticle>(Part_pdg_id[ip]));
0253 
0254     Acts::Vector3 p = Acts::Vector3{Part_px[ip], Part_py[ip], Part_pz[ip]} *
0255                       Acts::UnitConstants::MeV;
0256     particle.setAbsoluteMomentum(p.norm());
0257 
0258     particle.setDirection(p.normalized());
0259 
0260     auto x = Acts::Vector4{Part_vx[ip], Part_vy[ip], Part_vz[ip], 0.0};
0261     particle.setPosition4(x);
0262 
0263     particles.push_back(SimParticle(particle, particle));
0264   }
0265 
0266   ACTS_DEBUG("Created " << particles.size() << " particles");
0267   auto before = particles.size();
0268 
0269   auto particlesSet = particleVectorToSet(particles);
0270 
0271   if (particlesSet.size() < before) {
0272     ACTS_WARNING("Particle IDs not unique for " << before - particles.size()
0273                                                 << " particles!");
0274   }
0275 
0276   return particlesSet;
0277 }
0278 
0279 std::tuple<ClusterContainer, MeasurementContainer,
0280            IndexMultimap<ActsFatras::Barcode>,
0281            std::unordered_map<int, std::size_t>>
0282 RootAthenaDumpReader::readMeasurements(
0283     SimParticleContainer& particles, const Acts::GeometryContext& gctx) const {
0284   ClusterContainer clusters;
0285   clusters.reserve(nCL);
0286 
0287   MeasurementContainer measurements;
0288   measurements.reserve(nCL);
0289 
0290   std::size_t nTotalTotZero = 0;
0291 
0292   const auto prevParticlesSize = particles.size();
0293   IndexMultimap<ActsFatras::Barcode> measPartMap;
0294 
0295   // We cannot use im for the index since we might skip measurements
0296   std::unordered_map<int, std::size_t> imIdxMap;
0297   imIdxMap.reserve(nCL);
0298 
0299   for (int im = 0; im < nCL; im++) {
0300     if (!(CLhardware->at(im) == "PIXEL" || CLhardware->at(im) == "STRIP")) {
0301       ACTS_ERROR("hardware is neither 'PIXEL' or 'STRIP', skip particle");
0302       continue;
0303     }
0304     ACTS_VERBOSE("Cluster " << im << ": " << CLhardware->at(im));
0305 
0306     auto type = (CLhardware->at(im) == "PIXEL") ? ePixel : eStrip;
0307 
0308     // Make cluster
0309     // TODO refactor Cluster class so it is not so tedious
0310     const auto& etas = CLetas->at(im);
0311     const auto& phis = CLetas->at(im);
0312     const auto& tots = CLtots->at(im);
0313 
0314     const auto totalTot = std::accumulate(tots.begin(), tots.end(), 0);
0315 
0316     const auto [minEta, maxEta] = std::minmax_element(etas.begin(), etas.end());
0317     const auto [minPhi, maxPhi] = std::minmax_element(phis.begin(), phis.end());
0318 
0319     Cluster cluster;
0320     if (m_cfg.readCellData) {
0321       cluster.channels.reserve(etas.size());
0322 
0323       cluster.sizeLoc0 = *maxEta - *minEta;
0324       cluster.sizeLoc1 = *maxPhi - *minPhi;
0325 
0326       if (totalTot == 0.0) {
0327         ACTS_VERBOSE(
0328             "total time over threshold is 0, set all activations to 0");
0329         nTotalTotZero++;
0330       }
0331 
0332       for (const auto& [eta, phi, tot] : Acts::zip(etas, phis, tots)) {
0333         // Make best out of what we have:
0334         // Weight the overall collected charge corresponding to the
0335         // time-over-threshold of each cell Use this as activation (does this
0336         // make sense?)
0337         auto activation =
0338             (totalTot != 0.0) ? CLcharge_count[im] * tot / totalTot : 0.0;
0339 
0340         // This bases every cluster at zero, but shouldn't matter right now
0341         ActsFatras::Segmentizer::Bin2D bin;
0342         bin[0] = eta - *minEta;
0343         bin[1] = phi - *minPhi;
0344 
0345         // Of course we have no Segment2D because this is not Fatras
0346         cluster.channels.emplace_back(bin, ActsFatras::Segmentizer::Segment2D{},
0347                                       activation);
0348       }
0349 
0350       ACTS_VERBOSE("- shape: " << cluster.channels.size()
0351                                << "cells, dimensions: " << cluster.sizeLoc0
0352                                << ", " << cluster.sizeLoc1);
0353     }
0354 
0355     cluster.globalPosition = {CLx[im], CLy[im], CLz[im]};
0356     cluster.localDirection = {CLloc_direction1[im], CLloc_direction2[im],
0357                               CLloc_direction3[im]};
0358     cluster.lengthDirection = {CLJan_loc_direction1[im],
0359                                CLJan_loc_direction2[im],
0360                                CLJan_loc_direction3[im]};
0361     cluster.localEta = CLloc_eta[im];
0362     cluster.localPhi = CLloc_phi[im];
0363     cluster.globalEta = CLglob_eta[im];
0364     cluster.globalPhi = CLglob_phi[im];
0365     cluster.etaAngle = CLeta_angle[im];
0366     cluster.phiAngle = CLphi_angle[im];
0367 
0368     // Measurement creation
0369     const auto& locCov = CLlocal_cov->at(im);
0370 
0371     Acts::GeometryIdentifier geoId;
0372     std::vector<double> localParams;
0373     if (m_cfg.geometryIdMap && m_cfg.trackingGeometry) {
0374       const auto& geoIdMap = m_cfg.geometryIdMap->left;
0375       if (geoIdMap.find(CLmoduleID[im]) == geoIdMap.end()) {
0376         ACTS_WARNING("Missing geo id for " << CLmoduleID[im] << ", skip hit");
0377         continue;
0378       }
0379 
0380       geoId = m_cfg.geometryIdMap->left.at(CLmoduleID[im]);
0381 
0382       auto surface = m_cfg.trackingGeometry->findSurface(geoId);
0383       if (surface == nullptr) {
0384         ACTS_WARNING("Did not find " << geoId
0385                                      << " in tracking geometry, skip hit");
0386         continue;
0387       }
0388 
0389       bool inside =
0390           surface->isOnSurface(gctx, cluster.globalPosition, {},
0391                                Acts::BoundaryTolerance::AbsoluteEuclidean(
0392                                    m_cfg.absBoundaryTolerance),
0393                                std::numeric_limits<double>::max());
0394 
0395       if (!inside) {
0396         const Acts::Vector3 v =
0397             surface->transform(gctx).inverse() * cluster.globalPosition;
0398         ACTS_WARNING("Projected position is not in surface bounds for "
0399                      << surface->geometryId() << ", skip hit");
0400         ACTS_WARNING("Position in local coordinates: " << v.transpose());
0401         ACTS_WARNING("Surface details:\n" << surface->toStream(gctx));
0402         continue;
0403       }
0404 
0405       auto loc = surface->globalToLocal(gctx, cluster.globalPosition, {},
0406                                         Acts::s_onSurfaceTolerance);
0407 
0408       if (!loc.ok()) {
0409         const Acts::Vector3 v =
0410             surface->transform(gctx).inverse() * cluster.globalPosition;
0411         ACTS_WARNING("Global-to-local fit failed on "
0412                      << geoId << " (z dist: " << v[2]
0413                      << ", projected on surface: " << std::boolalpha << inside
0414                      << ") , skip hit");
0415         continue;
0416       }
0417 
0418       // TODO is this in strip coordinates or in polar coordinates for annulus
0419       // bounds?
0420       localParams = std::vector<double>(loc->begin(), loc->end());
0421     } else {
0422       geoId = Acts::GeometryIdentifier(CLmoduleID[im]);
0423       localParams = {CLloc_direction1[im], CLloc_direction2[im]};
0424     }
0425 
0426     DigitizedParameters digiPars;
0427     if (type == ePixel) {
0428       digiPars.indices = {Acts::eBoundLoc0, Acts::eBoundLoc1};
0429       assert(locCov.size() == 4);
0430       digiPars.variances = {locCov[0], locCov[3]};
0431       digiPars.values = localParams;
0432     } else {
0433       assert(!locCov.empty());
0434       // Barrel-endcap index can be -2/2 for endcap or 0 for barrel
0435       // We need to choose the coordinate of local measurement depending on that
0436       const static std::array boundLoc = {Acts::eBoundLoc0, Acts::eBoundLoc1};
0437       auto i = CLbarrel_endcap[im] == 0 ? 0 : 1;
0438       digiPars.variances = {locCov[i]};
0439       digiPars.values = {localParams[i]};
0440       digiPars.indices = {boundLoc[i]};
0441     }
0442 
0443     std::size_t measIndex = measurements.size();
0444     ACTS_VERBOSE("Add measurement with index " << measIndex);
0445     imIdxMap.emplace(im, measIndex);
0446     createMeasurement(measurements, geoId, digiPars);
0447     clusters.push_back(cluster);
0448 
0449     if (!m_cfg.noTruth) {
0450       // Create measurement particles map and particles container
0451       for (const auto& [subevt, barcode] :
0452            Acts::zip(CLparticleLink_eventIndex->at(im),
0453                      CLparticleLink_barcode->at(im))) {
0454         SimBarcode dummyBarcode =
0455             SimBarcode()
0456                 .withVertexPrimary(
0457                     static_cast<SimBarcode::PrimaryVertexId>(subevt))
0458                 .withVertexSecondary(static_cast<SimBarcode::SecondaryVertexId>(
0459                     barcode < s_maxBarcodeForPrimary ? 0 : 1))
0460                 .withParticle(static_cast<SimBarcode::ParticleId>(barcode));
0461         // If we don't find the particle, create one with default values
0462         if (particles.find(dummyBarcode) == particles.end()) {
0463           ACTS_VERBOSE("Particle with subevt "
0464                        << subevt << ", barcode " << barcode
0465                        << "not found, create dummy one");
0466           particles.emplace(dummyBarcode, Acts::PdgParticle::eInvalid);
0467         }
0468         measPartMap.insert(
0469             std::pair<Index, ActsFatras::Barcode>{measIndex, dummyBarcode});
0470       }
0471     }
0472   }
0473 
0474   if (measurements.size() < static_cast<std::size_t>(nCL)) {
0475     ACTS_WARNING("Could not convert " << nCL - measurements.size() << " / "
0476                                       << nCL << " measurements");
0477   }
0478 
0479   if (particles.size() - prevParticlesSize > 0) {
0480     ACTS_DEBUG("Created " << particles.size() - prevParticlesSize
0481                           << " dummy particles");
0482   }
0483 
0484   if (nTotalTotZero > 0) {
0485     ACTS_DEBUG(nTotalTotZero << " / " << nCL
0486                              << " clusters have zero time-over-threshold");
0487   }
0488 
0489   return {std::move(clusters), std::move(measurements), std::move(measPartMap),
0490           std::move(imIdxMap)};
0491 }
0492 
0493 std::tuple<SimSpacePointContainer, SimSpacePointContainer,
0494            SimSpacePointContainer>
0495 RootAthenaDumpReader::readSpacepoints(
0496     const std::optional<std::unordered_map<int, std::size_t>>& imIdxMap) const {
0497   SimSpacePointContainer pixelSpacePoints;
0498   pixelSpacePoints.reserve(nSP);
0499 
0500   SimSpacePointContainer stripSpacePoints;
0501   stripSpacePoints.reserve(nSP);
0502 
0503   SimSpacePointContainer spacePoints;
0504   spacePoints.reserve(nSP);
0505 
0506   // Loop on space points
0507   std::size_t skippedSpacePoints = 0;
0508   for (int isp = 0; isp < nSP; isp++) {
0509     auto isPhiOverlap = (SPisOverlap[isp] == 2) || (SPisOverlap[isp] == 3);
0510     auto isEtaOverlap = (SPisOverlap[isp] == 1) || (SPisOverlap[isp] == 3);
0511     if (m_cfg.skipOverlapSPsPhi && isPhiOverlap) {
0512       ++skippedSpacePoints;
0513       continue;
0514     }
0515     if (m_cfg.skipOverlapSPsEta && isEtaOverlap) {
0516       ++skippedSpacePoints;
0517       continue;
0518     }
0519 
0520     const Acts::Vector3 globalPos{SPx[isp], SPy[isp], SPz[isp]};
0521     const double spCovr = SPcovr[isp];
0522     const double spCovz = SPcovz[isp];
0523 
0524     // PIX=1  STRIP = 2
0525     auto type = SPCL2_index[isp] == -1 ? ePixel : eStrip;
0526 
0527     ACTS_VERBOSE("SP:: " << type << " [" << globalPos.transpose() << "] "
0528                          << spCovr << " " << spCovz);
0529 
0530     boost::container::static_vector<Acts::SourceLink, 2> sLinks;
0531 
0532     const auto cl1Index = SPCL1_index[isp];
0533     assert(cl1Index >= 0 && cl1Index < nCL);
0534 
0535     auto getGeoId =
0536         [&](auto athenaId) -> std::optional<Acts::GeometryIdentifier> {
0537       if (m_cfg.geometryIdMap == nullptr) {
0538         return Acts::GeometryIdentifier{athenaId};
0539       }
0540       if (m_cfg.geometryIdMap->left.find(athenaId) ==
0541           m_cfg.geometryIdMap->left.end()) {
0542         return std::nullopt;
0543       }
0544       return m_cfg.geometryIdMap->left.at(athenaId);
0545     };
0546 
0547     auto cl1GeoId = getGeoId(CLmoduleID[cl1Index]);
0548     if (!cl1GeoId) {
0549       ACTS_WARNING("Could not find geoId for spacepoint cluster 1");
0550       continue;
0551     }
0552 
0553     if (imIdxMap && !imIdxMap->contains(cl1Index)) {
0554       ACTS_WARNING("Measurement 1 for spacepoint " << isp << " not created");
0555       continue;
0556     }
0557 
0558     IndexSourceLink first(*cl1GeoId,
0559                           imIdxMap ? imIdxMap->at(cl1Index) : cl1Index);
0560     sLinks.emplace_back(first);
0561 
0562     // First create pixel spacepoint here, later maybe overwrite with strip
0563     // spacepoint
0564     SimSpacePoint sp(globalPos, std::nullopt, spCovr, spCovz, std::nullopt,
0565                      sLinks);
0566 
0567     if (type == ePixel) {
0568       pixelSpacePoints.push_back(sp);
0569     } else {
0570       const auto cl2Index = SPCL2_index[isp];
0571       assert(cl2Index >= 0 && cl2Index < nCL);
0572 
0573       auto cl2GeoId = getGeoId(CLmoduleID[cl1Index]);
0574       if (!cl2GeoId) {
0575         ACTS_WARNING("Could not find geoId for spacepoint cluster 2");
0576         continue;
0577       }
0578 
0579       if (imIdxMap && !imIdxMap->contains(cl2Index)) {
0580         ACTS_WARNING("Measurement 2 for spacepoint " << isp << " not created");
0581         continue;
0582       }
0583 
0584       IndexSourceLink second(*cl2GeoId,
0585                              imIdxMap ? imIdxMap->at(cl2Index) : cl2Index);
0586       sLinks.emplace_back(second);
0587 
0588       using Vector3f = Eigen::Matrix<float, 3, 1>;
0589       Vector3f topStripDirection = Vector3f::Zero();
0590       Vector3f bottomStripDirection = Vector3f::Zero();
0591       Vector3f stripCenterDistance = Vector3f::Zero();
0592       Vector3f topStripCenterPosition = Vector3f::Zero();
0593 
0594       if (m_haveStripFeatures) {
0595         topStripDirection = {SPtopStripDirection->at(isp).at(0),
0596                              SPtopStripDirection->at(isp).at(1),
0597                              SPtopStripDirection->at(isp).at(2)};
0598         bottomStripDirection = {SPbottomStripDirection->at(isp).at(0),
0599                                 SPbottomStripDirection->at(isp).at(1),
0600                                 SPbottomStripDirection->at(isp).at(2)};
0601         stripCenterDistance = {SPstripCenterDistance->at(isp).at(0),
0602                                SPstripCenterDistance->at(isp).at(1),
0603                                SPstripCenterDistance->at(isp).at(2)};
0604         topStripCenterPosition = {SPtopStripCenterPosition->at(isp).at(0),
0605                                   SPtopStripCenterPosition->at(isp).at(1),
0606                                   SPtopStripCenterPosition->at(isp).at(2)};
0607       }
0608       sp = SimSpacePoint(globalPos, std::nullopt, spCovr, spCovz, std::nullopt,
0609                          sLinks, SPhl_topstrip[isp], SPhl_botstrip[isp],
0610                          topStripDirection.cast<double>(),
0611                          bottomStripDirection.cast<double>(),
0612                          stripCenterDistance.cast<double>(),
0613                          topStripCenterPosition.cast<double>());
0614 
0615       stripSpacePoints.push_back(sp);
0616     }
0617 
0618     spacePoints.push_back(sp);
0619   }
0620 
0621   if (m_cfg.skipOverlapSPsEta || m_cfg.skipOverlapSPsPhi) {
0622     ACTS_DEBUG("Skipped " << skippedSpacePoints
0623                           << " because of eta/phi overlaps");
0624   }
0625   if (spacePoints.size() <
0626       (static_cast<std::size_t>(nSP) - skippedSpacePoints)) {
0627     ACTS_WARNING("Could not convert " << nSP - spacePoints.size() << " of "
0628                                       << nSP << " spacepoints");
0629   }
0630 
0631   ACTS_DEBUG("Created " << spacePoints.size() << " overall space points");
0632   ACTS_DEBUG("Created " << pixelSpacePoints.size() << " "
0633                         << " pixel space points");
0634   ACTS_DEBUG("Created " << stripSpacePoints.size() << " "
0635                         << " strip space points");
0636 
0637   return {std::move(spacePoints), std::move(pixelSpacePoints),
0638           std::move(stripSpacePoints)};
0639 }
0640 
0641 std::pair<SimParticleContainer, IndexMultimap<ActsFatras::Barcode>>
0642 RootAthenaDumpReader::reprocessParticles(
0643     const SimParticleContainer& particles,
0644     const IndexMultimap<ActsFatras::Barcode>& measPartMap) const {
0645   std::vector<ActsExamples::SimParticle> newParticles;
0646   newParticles.reserve(particles.size());
0647   IndexMultimap<ActsFatras::Barcode> newMeasPartMap;
0648   newMeasPartMap.reserve(measPartMap.size());
0649 
0650   const auto partMeasMap = invertIndexMultimap(measPartMap);
0651 
0652   std::uint16_t primaryCount = 0;
0653   std::uint16_t secondaryCount = 0;
0654 
0655   for (const auto& particle : particles) {
0656     const auto [begin, end] = partMeasMap.equal_range(particle.particleId());
0657 
0658     if (begin == end) {
0659       ACTS_VERBOSE("Particle " << particle.particleId()
0660                                << " has no measurements");
0661       continue;
0662     }
0663 
0664     auto primary = particle.particleId().vertexSecondary() == 0;
0665 
0666     // vertex primary shouldn't be zero for a valid particle
0667     ActsFatras::Barcode fatrasBarcode =
0668         ActsFatras::Barcode().withVertexPrimary(1);
0669     if (primary) {
0670       fatrasBarcode =
0671           fatrasBarcode.withVertexSecondary(0).withParticle(primaryCount);
0672       assert(primaryCount < std::numeric_limits<std::uint16_t>::max());
0673       primaryCount++;
0674     } else {
0675       fatrasBarcode =
0676           fatrasBarcode.withVertexSecondary(1).withParticle(secondaryCount);
0677       assert(primaryCount < std::numeric_limits<std::uint16_t>::max());
0678       secondaryCount++;
0679     }
0680 
0681     auto newParticle = particle.withParticleId(fatrasBarcode);
0682     newParticle.finalState().setNumberOfHits(std::distance(begin, end));
0683     newParticles.push_back(newParticle);
0684 
0685     for (auto it = begin; it != end; ++it) {
0686       newMeasPartMap.insert(
0687           std::pair<Index, ActsFatras::Barcode>{it->second, fatrasBarcode});
0688     }
0689   }
0690 
0691   ACTS_DEBUG("After reprocessing particles " << newParticles.size() << " of "
0692                                              << particles.size() << " remain");
0693   return {particleVectorToSet(newParticles), std::move(newMeasPartMap)};
0694 }
0695 
0696 ProcessCode RootAthenaDumpReader::read(const AlgorithmContext& ctx) {
0697   ACTS_DEBUG("Reading event " << ctx.eventNumber);
0698   auto entry = ctx.eventNumber;
0699   if (entry >= m_events) {
0700     ACTS_ERROR("event out of bounds");
0701     return ProcessCode::ABORT;
0702   }
0703 
0704   std::lock_guard<std::mutex> lock(m_read_mutex);
0705 
0706   m_inputchain->GetEntry(entry);
0707 
0708   std::optional<std::unordered_map<int, std::size_t>> optImIdxMap;
0709 
0710   if (!m_cfg.onlySpacepoints) {
0711     SimParticleContainer candidateParticles;
0712 
0713     if (!m_cfg.noTruth) {
0714       candidateParticles = readParticles();
0715     }
0716 
0717     auto [clusters, measurements, candidateMeasPartMap, imIdxMap] =
0718         readMeasurements(candidateParticles, ctx.geoContext);
0719     optImIdxMap.emplace(std::move(imIdxMap));
0720 
0721     m_outputClusters(ctx, std::move(clusters));
0722     m_outputMeasurements(ctx, std::move(measurements));
0723 
0724     if (!m_cfg.noTruth) {
0725       auto [particles, measPartMap] =
0726           reprocessParticles(candidateParticles, candidateMeasPartMap);
0727 
0728       m_outputParticles(ctx, std::move(particles));
0729       m_outputParticleMeasMap(ctx, invertIndexMultimap(measPartMap));
0730       m_outputMeasParticleMap(ctx, std::move(measPartMap));
0731     }
0732   }
0733 
0734   auto [spacePoints, pixelSpacePoints, stripSpacePoints] =
0735       readSpacepoints(optImIdxMap);
0736 
0737   m_outputPixelSpacePoints(ctx, std::move(pixelSpacePoints));
0738   m_outputStripSpacePoints(ctx, std::move(stripSpacePoints));
0739   m_outputSpacePoints(ctx, std::move(spacePoints));
0740 
0741   return ProcessCode::SUCCESS;
0742 }
0743 }  // namespace ActsExamples
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