Detector.cxx

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#include "MIDSimulation/Detector.h"
#include "MIDSimulation/Geometry.h"
#include "DetectorsBase/Stack.h"
#include <TGeoManager.h>
#include <TGeoVolume.h>
#include "FairVolume.h"
 
ClassImp(o2::mid::Detector);
 
namespace o2
{
namespace mid
{
 
Detector::Detector(bool active) : o2::base::DetImpl<Detector>("MID", active),
                                  mStepper()
{
}
 
Detector::Detector(const Detector& rhs)
  : o2::base::DetImpl<Detector>(rhs), mStepper()
{
}
 
void Detector::defineSensitiveVolumes()
{
  for (auto* vol : getSensitiveVolumes()) {
    AddSensitiveVolume(vol);
  }
}
 
void Detector::InitializeO2Detector()
{
  defineSensitiveVolumes();
}
 
bool Detector::ProcessHits(FairVolume* vol)
{
  auto hit = mStepper.process(*fMC);
  if (hit) {
    (static_cast<o2::data::Stack*>(fMC->GetStack()))->addHit(GetDetId());
  }
  return hit;
}
 
std::vector<Hit>* Detector::getHits(int iColl)
{
  if (iColl == 0) {
    return mStepper.getHits();
  }
  return nullptr;
}
 
bool Detector::setHits(int iColl, std::vector<Hit>* ptr)
{
  if (iColl == 0) {
    mStepper.setHits(ptr);
  }
  return false;
}
 
void Detector::Register()
{
 
  mStepper.registerHits(addNameTo("Hit").c_str());
}
 
void Detector::EndOfEvent() { mStepper.resetHits(); }
 
void Detector::ConstructGeometry()
{
 
  auto motherVolume = gGeoManager->GetVolume("YOUT2");
 
  auto top = (motherVolume) ? motherVolume : gGeoManager->GetTopVolume();
 
  if (!top) {
    throw std::runtime_error("Cannot create MID geometry without a top volume");
  }
 
  createGeometry(*top);
}
 
} // namespace mid
} // namespace o2