tests/track_propagation_test/TrackPropagationTest_processor.cc

0001
0002 #include <Acts/Definitions/Algebra.hpp>
0003 #include <Acts/EventData/TrackContainer.hpp>
0004 #include <Acts/EventData/TrackProxy.hpp>
0005 #include <Acts/EventData/VectorMultiTrajectory.hpp>
0006 #include <Acts/EventData/VectorTrackContainer.hpp>
0007 #include <Acts/Surfaces/DiscSurface.hpp>
0008 #include <Acts/Surfaces/RadialBounds.hpp>
0009 #include <Acts/Surfaces/Surface.hpp>
0010 #include <ActsExamples/EventData/Track.hpp>
0011 #include <JANA/JApplication.h>
0012 #include <JANA/JApplicationFwd.h>
0013 #include <JANA/JEvent.h>
0014 #include <JANA/JException.h>
0015 #include <JANA/Services/JGlobalRootLock.h>
0016 #include <edm4eic/TrackCollection.h>
0017 #include <edm4eic/TrackPoint.h>
0018 #include <edm4hep/Vector3f.h>
0019 #include <fmt/format.h>
0020 #include <spdlog/logger.h>
0021 #include <Eigen/Geometry>
0022 #include <exception>
0023 #include <map>
0024 #include <string>
0025 #include <vector>
0026
0027 #include "TrackPropagation.h"
0028 #include "TrackPropagationTest_processor.h"
0029 #include "services/rootfile/RootFile_service.h"
0030
0031 //------------------
0032 // Init
0033 //------------------
0034 void TrackPropagationTest_processor::Init() {
0035   std::string plugin_name = ("track_propagation_test");
0036
0037   // Get JANA application
0038   auto* app = GetApplication();
0039
0040   // Ask service locator a file to write histograms to
0041   auto root_file_service = app->GetService<RootFile_service>();
0042
0043   // Get TDirectory for histograms root file
0044   auto globalRootLock = app->GetService<JGlobalRootLock>();
0045   globalRootLock->acquire_write_lock();
0046   auto* file = root_file_service->GetHistFile();
0047   globalRootLock->release_lock();
0048
0049   // Create a directory for this plugin. And subdirectories for series of histograms
0050   m_dir_main = file->mkdir(plugin_name.c_str());
0051
0052   // Get log level from user parameter or default
0053   InitLogger(app, plugin_name);
0054
0055   // Create TrackPropagation algorithm (must be after services are initialized)
0056   m_propagation_algo = std::make_unique<eicrecon::TrackPropagation>("TrackPropagationTest");
0057   m_propagation_algo->init();
0058
0059   // Create HCal surface that will be used for propagation
0060   auto transform = Acts::Transform3::Identity();
0061
0062   // make a reference disk to mimic electron-endcap HCal
0063   const auto hcalEndcapNZ    = -3322.;
0064   const auto hcalEndcapNMinR = 83.01;
0065   const auto hcalEndcapNMaxR = 950;
0066   auto hcalEndcapNBounds = std::make_shared<Acts::RadialBounds>(hcalEndcapNMinR, hcalEndcapNMaxR);
0067   auto hcalEndcapNTrf    = transform * Acts::Translation3(Acts::Vector3(0, 0, hcalEndcapNZ));
0068   m_hcal_surface = Acts::Surface::makeShared<Acts::DiscSurface>(hcalEndcapNTrf, hcalEndcapNBounds);
0069 }
0070
0071 //------------------
0072 // Process
0073 //------------------
0074 // This function is called every event
0075 void TrackPropagationTest_processor::Process(const std::shared_ptr<const JEvent>& event) {
0076   m_log->trace("TrackPropagationTest_processor event");
0077
0078   // Get track containers from tracking
0079   auto track_states = event->Get<Acts::ConstVectorMultiTrajectory>("CentralCKFActsTrackStates");
0080   auto tracks       = event->Get<Acts::ConstVectorTrackContainer>("CentralCKFActsTracks");
0081
0082   if (track_states.empty() || tracks.empty()) {
0083     m_log->debug("No track containers found");
0084     return;
0085   }
0086
0087   // Construct ConstTrackContainer from underlying containers
0088   auto trackStateContainer =
0089       std::make_shared<Acts::ConstVectorMultiTrajectory>(*track_states.front());
0090   auto trackContainer = std::make_shared<Acts::ConstVectorTrackContainer>(*tracks.front());
0091   ActsExamples::ConstTrackContainer track_container(trackContainer, trackStateContainer);
0092
0093   // Iterate over tracks
0094   m_log->debug("Propagating through {} tracks", track_container.size());
0095   for (const auto& track : track_container) {
0096     m_log->trace(" -- track {} --", track.index());
0097
0098     std::unique_ptr<edm4eic::TrackPoint> projection_point;
0099     try {
0100       // >>> try to propagate to surface <<<
0101       projection_point =
0102           m_propagation_algo->propagate(edm4eic::Track{}, track, track_container, m_hcal_surface);
0103     } catch (std::exception& e) {
0104       throw JException(e.what());
0105     }
0106
0107     if (!projection_point) {
0108       m_log->trace("   could not propagate track {}!", track.index());
0109       continue;
0110     }
0111
0112     // Now go through reconstructed tracks points
0113
0114     auto pos    = projection_point->position;
0115     auto length = projection_point->pathlength;
0116     m_log->trace("   {:>10} {:>10.2f} {:>10.2f} {:>10.2f} {:>10.2f}", track.index(), pos.x, pos.y,
0117                  pos.z, length);
0118   }
0119 }
0120
0121 //------------------
0122 // Finish
0123 //------------------
0124 void TrackPropagationTest_processor::Finish() {
0125   //    m_log->trace("TrackPropagationTest_processor finished\n");
0126 }