DD4hepVolumeStructure.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 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/Definitions/Units.hpp"
#include "Acts/Detector/VolumeStructureBuilder.hpp"
#include "Acts/Plugins/DD4hep/DD4hepDetectorElement.hpp"
#include "Acts/Utilities/Logger.hpp"

#include <memory>
#include <string>

#include <DD4hep/DD4hepUnits.h>

namespace dd4hep {
class DetElement;
}

namespace Acts {

namespace Experimental {

class DD4hepVolumeStructure {
 public:
  DD4hepVolumeStructure(std::unique_ptr<const Logger> mlogger =
                            getDefaultLogger("DD4hepVolumeStructure",
                                             Acts::Logging::INFO));

  DD4hepVolumeStructure() = delete;

  struct Options {
    std::string name = "";
    Acts::Logging::Level logLevel = Acts::Logging::INFO;
  };

  std::shared_ptr<VolumeStructureBuilder> builder(
      const dd4hep::DetElement& dd4hepElement, const Options& options) const;

 private:
  static constexpr ActsScalar unitLength =
      Acts::UnitConstants::mm / dd4hep::millimeter;

  bool recursiveParse(VolumeStructureBuilder::Config& vsbConfig,
                      const dd4hep::DetElement& dd4hepElement) const;

  std::unique_ptr<const Logger> m_logger;

  const Logger& logger() const { return *m_logger; }
};

}  // namespace Experimental
}  // namespace Acts