DD4hepGeometryService.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2017 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/Geometry/GeometryContext.hpp"
#include "Acts/Geometry/GeometryIdentifier.hpp"
#include "ActsExamples/Framework/ProcessCode.hpp"
#include <Acts/Definitions/Units.hpp>
#include <Acts/Geometry/TrackingGeometry.hpp>
#include <Acts/Material/IMaterialDecorator.hpp>
#include <Acts/Utilities/BinningType.hpp>
#include <Acts/Utilities/Logger.hpp>

#include <functional>
#include <memory>
#include <string>
#include <vector>

#include <DD4hep/DetElement.h>
#include <DD4hep/Detector.h>
#include <TGeoNode.h>

class TGeoNode;
namespace Acts {
class IMaterialDecorator;
class TrackingGeometry;
}  // namespace Acts
namespace dd4hep {
class Detector;
}  // namespace dd4hep

namespace ActsExamples {
namespace DD4hep {

void sortFCChhDetElements(std::vector<dd4hep::DetElement>& det);

class DD4hepGeometryService {
 public:
  struct Config {
    Acts::Logging::Level logLevel = Acts::Logging::Level::INFO;
    Acts::Logging::Level dd4hepLogLevel = Acts::Logging::Level::INFO;
    std::vector<std::string> xmlFileNames;
    std::string name;
    Acts::BinningType bTypePhi = Acts::equidistant;
    Acts::BinningType bTypeR = Acts::arbitrary;
    Acts::BinningType bTypeZ = Acts::equidistant;
    double envelopeR = 1 * Acts::UnitConstants::mm;
    double envelopeZ = 1 * Acts::UnitConstants::mm;
    double defaultLayerThickness = 10e-10;
    std::function<void(std::vector<dd4hep::DetElement>& detectors)>
        sortDetectors = sortFCChhDetElements;
    std::shared_ptr<const Acts::IMaterialDecorator> matDecorator;

    std::shared_ptr<const Acts::GeometryIdentifierHook> geometryIdentifierHook =
        std::make_shared<const Acts::GeometryIdentifierHook>();
  };

  DD4hepGeometryService(const Config& cfg);
  ~DD4hepGeometryService();

  dd4hep::Detector& detector();

  dd4hep::DetElement& geometry();

  TGeoNode& tgeoGeometry();

  std::shared_ptr<const Acts::TrackingGeometry> trackingGeometry(
      const Acts::GeometryContext& gctx);

 private:
  ActsExamples::ProcessCode buildDD4hepGeometry();

  ActsExamples::ProcessCode buildTrackingGeometry(
      const Acts::GeometryContext& gctx);

  Config m_cfg;
  dd4hep::Detector* m_detector = nullptr;
  dd4hep::DetElement m_geometry;
  std::shared_ptr<const Acts::TrackingGeometry> m_trackingGeometry;

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

  std::unique_ptr<const Acts::Logger> m_logger;
};

}  // namespace DD4hep
}  // namespace ActsExamples