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 #include "TrackingEfficiency_processor.h"
 
 #include <Acts/Definitions/TrackParametrization.hpp>
 #include <Acts/EventData/TrackContainer.hpp>
 #include <Acts/EventData/TrackProxy.hpp>
 #include <Acts/EventData/VectorMultiTrajectory.hpp>
 #include <Acts/EventData/VectorTrackContainer.hpp>
 #include <ActsExamples/EventData/Track.hpp>
 #include <JANA/JApplication.h>
 #include <JANA/JApplicationFwd.h>
 #include <JANA/JEvent.h>
 #include <JANA/Services/JGlobalRootLock.h>
 #include <Math/GenVector/Cartesian3D.h>
 #include <Math/GenVector/PxPyPzM4D.h>
 #include <edm4eic/ReconstructedParticleCollection.h>
 #include <edm4hep/MCParticleCollection.h>
 #include <edm4hep/Vector3d.h>
 #include <edm4hep/Vector3f.h>
 #include <fmt/format.h>
 #include <spdlog/logger.h>
 #include <Eigen/Core>
 #include <cassert>
 #include <cmath>
 #include <cstddef>
 #include <map>
 #include <string>
 #include <vector>
 
 #include "services/log/Log_service.h"
 #include "services/rootfile/RootFile_service.h"
 
 //------------------
 // Init
 //------------------
 void TrackingEfficiency_processor::Init() {
   std::string plugin_name = ("tracking_efficiency");
 
   // Get JANA application
   auto* app = GetApplication();
 
   // Ask service locator a file to write histograms to
   auto root_file_service = app->GetService<RootFile_service>();
 
   // Get TDirectory for histograms root file
   auto globalRootLock = app->GetService<JGlobalRootLock>();
   globalRootLock->acquire_write_lock();
   auto* file = root_file_service->GetHistFile();
   globalRootLock->release_lock();
 
   // Create a directory for this plugin. And subdirectories for series of histograms
   m_dir_main = file->mkdir(plugin_name.c_str());
 
   // Get logger
   m_log = app->GetService<Log_service>()->logger(plugin_name);
 }
 
 //------------------
 // Process
 //------------------
 void TrackingEfficiency_processor::Process(const std::shared_ptr<const JEvent>& event) {
   using namespace ROOT;
 
   // EXAMPLE I
   // This is access to for final result of the calculation/data transformation of central detector CFKTracking:
   const auto* reco_particles =
       event->GetCollection<edm4eic::ReconstructedParticle>("ReconstructedChargedParticles");
 
   m_log->debug("Tracking reconstructed particles N={}: ", reco_particles->size());
   m_log->debug("   {:<5} {:>8} {:>8} {:>8} {:>8} {:>8}", "[i]", "[px]", "[py]", "[pz]", "[P]",
                "[P*3]");
 
   for (std::size_t i = 0; i < reco_particles->size(); i++) {
     const auto& particle = (*reco_particles)[i];
 
     double px = particle.getMomentum().x;
     double py = particle.getMomentum().y;
     double pz = particle.getMomentum().z;
     // ROOT::Math::PxPyPzM4D p4v(px, py, pz, particle.getMass());
     ROOT::Math::Cartesian3D p(px, py, pz);
     m_log->debug("   {:<5} {:>8.2f} {:>8.2f} {:>8.2f} {:>8.2f} {:>8.2f}", i, px, py, pz, p.R(),
                  p.R() * 3);
   }
 
   // EXAMPLE II
   // This gets access to more direct ACTS results from CKFTracking
   auto acts_track_states =
       event->Get<Acts::ConstVectorMultiTrajectory>("CentralCKFActsTrackStates");
   auto acts_tracks = event->Get<Acts::ConstVectorTrackContainer>("CentralCKFActsTracks");
   m_log->debug("ACTS Tracks( track states size: {}, tracks size: {} )", acts_track_states.size(),
                acts_tracks.size());
   m_log->debug("{:>10} {:>10}  {:>10} {:>10} {:>10} {:>10} {:>12} {:>12} {:>12} {:>8} {:>8}",
                "[loc 0]", "[loc 1]", "[phi]", "[theta]", "[q/p]", "[p]", "[err phi]", "[err th]",
                "[err q/p]", "[chi2]", "[ndf]");
 
   // Loop over the tracks
   if (!acts_track_states.empty() && !acts_tracks.empty()) {
     assert(acts_track_states.front() != nullptr &&
            "ConstVectorMultiTrajectory pointer should not be null");
     assert(acts_tracks.front() != nullptr &&
            "ConstVectorTrackContainer pointer should not be null");
 
     // Construct ConstTrackContainer from underlying containers
     auto trackStateContainer =
         std::make_shared<Acts::ConstVectorMultiTrajectory>(*acts_track_states.front());
     auto trackContainer = std::make_shared<Acts::ConstVectorTrackContainer>(*acts_tracks.front());
     ActsExamples::ConstTrackContainer track_container(trackContainer, trackStateContainer);
 
     for (const auto& track : track_container) {
       // Get the track parameters
       const auto& parameter  = track.parameters();
       const auto& covariance = track.covariance();
       auto chi2              = track.chi2();
       auto ndf               = track.nDoF();
 
       m_log->debug("{:>10.2f} {:>10.2f}  {:>10.2f} {:>10.3f} {:>10.4f} {:>10.3f} {:>12.4e} "
                    "{:>12.4e} {:>12.4e} {:>8.2f} {:<6}",
                    parameter[Acts::eBoundLoc0], parameter[Acts::eBoundLoc1],
                    parameter[Acts::eBoundPhi], parameter[Acts::eBoundTheta],
                    parameter[Acts::eBoundQOverP], 1.0 / parameter[Acts::eBoundQOverP],
                    sqrt(covariance(Acts::eBoundPhi, Acts::eBoundPhi)),
                    sqrt(covariance(Acts::eBoundTheta, Acts::eBoundTheta)),
                    sqrt(covariance(Acts::eBoundQOverP, Acts::eBoundQOverP)), chi2, ndf);
     }
   }
 
   // EXAMPLE III
   // Loop over MC particles
   const auto* mc_particles = event->GetCollection<edm4hep::MCParticle>("MCParticles");
   m_log->debug("MC particles N={}: ", mc_particles->size());
   m_log->debug("   {:<5} {:<6} {:<7} {:>8} {:>8} {:>8} {:>8}", "[i]", "status", "[PDG]", "[px]",
                "[py]", "[pz]", "[P]");
   for (std::size_t i = 0; i < mc_particles->size(); i++) {
     const auto& particle = (*mc_particles)[i];
 
     // GeneratorStatus() == 1 - stable particles from MC generator. 0 - might be added by Geant4
     if (particle.getGeneratorStatus() != 1) {
       continue;
     }
 
     double px = particle.getMomentum().x;
     double py = particle.getMomentum().y;
     double pz = particle.getMomentum().z;
     ROOT::Math::PxPyPzM4D p4v(px, py, pz, particle.getMass());
     ROOT::Math::Cartesian3D p(px, py, pz);
     if (p.R() < 1) {
       continue;
     }
 
     m_log->debug("   {:<5} {:<6} {:<7} {:>8.2f} {:>8.2f} {:>8.2f} {:>8.2f}", i,
                  particle.getGeneratorStatus(), particle.getPDG(), px, py, pz, p.R());
   }
 }
 
 //------------------
 // Finish
 //------------------
 void TrackingEfficiency_processor::Finish() {
   fmt::print("OccupancyAnalysis::Finish() called\n");
 
   // Next we want to create several pretty canvases (with histograms drawn on "same")
   // But we don't want those canvases to pop up. So we set root to batch mode
   // We will restore the mode afterwards
   //bool save_is_batch = gROOT->IsBatch();
   //gROOT->SetBatch(true);
 
   // 3D hits distribution
   //      auto th3_by_det_canvas = new TCanvas("th3_by_det_cnv", "Occupancy of detectors");
   //      dir_main->Append(th3_by_det_canvas);
   //      for (auto& kv : th3_by_detector->GetMap()) {
   //              auto th3_hist = kv.second;
   //              th3_hist->Draw("same");
   //      }
   //      th3_by_det_canvas->GetPad(0)->BuildLegend();
   //
   //      // Hits Z by detector
   //
   //      // Create pretty canvases
   //      auto z_by_det_canvas = new TCanvas("z_by_det_cnv", "Hit Z distribution by detector");
   //      dir_main->Append(z_by_det_canvas);
   //      th1_hits_z->Draw("PLC PFC");
   //
   //      for (auto& kv : th1_z_by_detector->GetMap()) {
   //              auto hist = kv.second;
   //              hist->Draw("SAME PLC PFC");
   //              hist->SetFillStyle(3001);
   //      }
   //      z_by_det_canvas->GetPad(0)->BuildLegend();
   //
   //      gROOT->SetBatch(save_is_batch);
 }

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