TrackingGeometry.hpp

Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file TrackingGeometry.hpp

// This file is part of the Acts project.
//
// Copyright (C) 2016-2020 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/Algebra.hpp"
#include "Acts/Geometry/GeometryContext.hpp"
#include "Acts/Geometry/GeometryIdentifier.hpp"
#include "Acts/Geometry/SurfaceVisitorConcept.hpp"
#include "Acts/Geometry/TrackingVolume.hpp"
#include "Acts/Utilities/Concepts.hpp"
#include "Acts/Utilities/Logger.hpp"

#include <memory>
#include <string>
#include <unordered_map>
#include <utility>

namespace Acts {

class Layer;
class Surface;
class PerigeeSurface;
class IMaterialDecorator;
class TrackingVolume;

using TrackingVolumePtr = std::shared_ptr<const TrackingVolume>;
using MutableTrackingVolumePtr = std::shared_ptr<TrackingVolume>;

class TrackingGeometry {
  friend class TrackingGeometryBuilder;

 public:
  TrackingGeometry(const MutableTrackingVolumePtr& highestVolume,
                   const IMaterialDecorator* materialDecorator = nullptr,
                   const GeometryIdentifierHook& hook = {},
                   const Logger& logger = getDummyLogger());

  ~TrackingGeometry();

  const TrackingVolume* highestTrackingVolume() const;

  const std::shared_ptr<const TrackingVolume>& highestTrackingVolumeShared()
      const;

  const TrackingVolume* lowestTrackingVolume(const GeometryContext& gctx,
                                             const Vector3& gp) const;

  const Layer* associatedLayer(const GeometryContext& gctx,
                               const Vector3& gp) const;

  void registerBeamTube(std::shared_ptr<const PerigeeSurface> beam);

  const Surface* getBeamline() const;

  template <ACTS_CONCEPT(SurfaceVisitor) visitor_t>
  void visitSurfaces(visitor_t&& visitor) const {
    highestTrackingVolume()->template visitSurfaces<visitor_t>(
        std::forward<visitor_t>(visitor));
  }

  const TrackingVolume* findVolume(GeometryIdentifier id) const;

  const Surface* findSurface(GeometryIdentifier id) const;

 private:
  // the known world
  TrackingVolumePtr m_world;
  // beam line
  std::shared_ptr<const PerigeeSurface> m_beam;
  // lookup containers
  std::unordered_map<GeometryIdentifier, const TrackingVolume*> m_volumesById;
  std::unordered_map<GeometryIdentifier, const Surface*> m_surfacesById;
};

}  // namespace Acts