TrackingGeometry.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2016-2018 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 "Acts/Utilities/Definitions.hpp"

#include <functional>
#include <map>
#include <memory>
#include <vector>

namespace Acts {

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

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);

  ~TrackingGeometry();

  const TrackingVolume* highestTrackingVolume() const;

  const TrackingVolume* lowestTrackingVolume(const GeometryContext& gctx,
                                             const Vector3D& gp) const;

  const TrackingVolume* trackingVolume(const std::string& name) const;

  const Layer* associatedLayer(const GeometryContext& gctx,
                               const Vector3D& gp) const;

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

  const Surface* getBeamline() const;

  void visitSurfaces(
      const std::function<void(const Acts::Surface*)>& visitor) const;

 private:
  TrackingVolumePtr m_world;
  std::shared_ptr<const PerigeeSurface> m_beam;

  std::map<std::string, const TrackingVolume*> m_trackingVolumes;
};

}  // namespace Acts