EventStore.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2021-2023 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include "Acts/Material/MaterialInteraction.hpp"
#include "ActsExamples/EventData/SimHit.hpp"
#include "ActsExamples/EventData/SimParticle.hpp"
#include "ActsExamples/Framework/DataHandle.hpp"
#include "ActsFatras/EventData/Barcode.hpp"

#include <memory>
#include <mutex>
#include <set>
#include <unordered_map>
#include <vector>

#include "G4Types.hh"

namespace ActsExamples {

class WhiteBoard;

struct EventStore {
 public:
  WhiteBoard* store = nullptr;

  using ParticleContainer =
      std::set<ActsFatras::Particle, ActsExamples::detail::CompareParticleId>;

  ParticleContainer particlesInitial;
  ParticleContainer particlesFinal;

  SimHitContainer::sequence_type hits;

  std::vector<ActsFatras::Hit> hitBuffer;

  std::size_t numberGeantSteps = 0;
  std::size_t maxStepsForHit = 0;

  std::unordered_map<std::size_t, Acts::RecordedMaterialTrack> materialTracks;

  std::unordered_map<SimBarcode, std::size_t> particleHitCount;
  std::unordered_map<G4int, SimBarcode> trackIdMapping;
  std::unordered_map<G4int, std::size_t> trackIdSubparticleCount;

  const ReadDataHandle<SimParticleContainer>* inputParticles{nullptr};

  std::size_t particleIdCollisionsInitial = 0;
  std::size_t particleIdCollisionsFinal = 0;
  std::size_t parentIdNotFound = 0;

  using BarcodeWithoutSubparticle = Acts::MultiIndex<uint64_t, 16, 16, 16, 16>;
  std::unordered_map<BarcodeWithoutSubparticle, std::size_t> subparticleMap;
};

}  // namespace ActsExamples