Csv/src/CsvMuonSimHitReader.cpp

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/Csv/CsvMuonSimHitReader.hpp"
0010
0011 #include "Acts/Definitions/Units.hpp"
0012 #include "Acts/Geometry/GeometryIdentifier.hpp"
0013 #include "ActsExamples/EventData/MuonSimHit.hpp"
0014 #include "ActsExamples/Framework/AlgorithmContext.hpp"
0015 #include "ActsExamples/Io/Csv/CsvInputOutput.hpp"
0016 #include "ActsExamples/Utilities/Paths.hpp"
0017 #include "ActsFatras/EventData/Barcode.hpp"
0018 #include "ActsFatras/EventData/Hit.hpp"
0019
0020 #include <array>
0021 #include <stdexcept>
0022
0023 #include "CsvOutputData.hpp"
0024
0025 ActsExamples::CsvMuonSimHitReader::CsvMuonSimHitReader(
0026     const ActsExamples::CsvMuonSimHitReader::Config& config,
0027     Acts::Logging::Level level)
0028     : m_cfg(config),
0029       // TODO check that all files (hits,cells,truth) exists
0030       m_eventsRange(
0031           determineEventFilesRange(m_cfg.inputDir, m_cfg.inputStem + ".csv")),
0032       m_logger(Acts::getDefaultLogger("CsvMuonSimHitReader", level)) {
0033   if (m_cfg.inputStem.empty()) {
0034     throw std::invalid_argument("Missing input filename stem");
0035   }
0036   if (m_cfg.outputSimHits.empty()) {
0037     throw std::invalid_argument("Missing simulated hits output collection");
0038   }
0039
0040   m_outputSimHits.initialize(m_cfg.outputSimHits);
0041 }
0042
0043 std::string ActsExamples::CsvMuonSimHitReader::CsvMuonSimHitReader::name()
0044     const {
0045   return "CsvMuonSimHitReader";
0046 }
0047
0048 std::pair<std::size_t, std::size_t>
0049 ActsExamples::CsvMuonSimHitReader::availableEvents() const {
0050   return m_eventsRange;
0051 }
0052
0053 ActsExamples::ProcessCode ActsExamples::CsvMuonSimHitReader::read(
0054     const ActsExamples::AlgorithmContext& ctx) {
0055   auto path = perEventFilepath(m_cfg.inputDir, m_cfg.inputStem + ".csv",
0056                                ctx.eventNumber);
0057
0058   ActsExamples::NamedTupleCsvReader<MuonSimHitData> reader(path);
0059
0060   MuonSimHitData data;
0061
0062   SimHitContainer::sequence_type unordered;
0063   while (reader.read(data)) {
0064     Acts::Vector4 pos{data.LocalPositionExtrx * Acts::UnitConstants::mm,
0065                       data.LocalPositionExtry * Acts::UnitConstants::mm,
0066                       data.LocalPositionExtrz * Acts::UnitConstants::mm, 0};
0067     Acts::Vector4 mom{data.LocalDirectionx * Acts::UnitConstants::GeV,
0068                       data.LocalDirectiony * Acts::UnitConstants::GeV,
0069                       data.LocalDirectionz * Acts::UnitConstants::GeV,
0070                       std::sqrt(data.LocalDirectionx * data.LocalDirectionx +
0071                                 data.LocalDirectiony * data.LocalDirectiony +
0072                                 data.LocalDirectionz * data.LocalDirectionz) *
0073                           Acts::UnitConstants::GeV};
0074     MuonMdtIdentifierFields f;
0075     f.multilayer = 0;
0076     f.tube = 0;
0077     f.tubeLayer = 0;
0078     f.stationEta = data.StationEta;
0079     f.stationPhi = data.StationPhi;
0080     f.stationName = data.StationName;
0081
0082     unordered.push_back(SimHit(compressId(f), data.pdgId, pos, mom, mom, -1));
0083   }
0084   SimHitContainer simHits;
0085   simHits.insert(unordered.begin(), unordered.end());
0086
0087   // write the ordered data to the EventStore (according to geometry_id).
0088   m_outputSimHits(ctx, std::move(simHits));
0089
0090   return ActsExamples::ProcessCode::SUCCESS;
0091 }