TGeoDetectorElement.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2017-2019 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/Plugins/Identification/IdentifiedDetectorElement.hpp"
#include "Acts/Plugins/Identification/Identifier.hpp"

#include <iostream>
#include <memory>
#include <string>

#include "TGeoManager.h"

namespace Acts {

class ISurfaceMaterial;
class SurfaceBounds;
class PlanarBounds;
class DiscBounds;
class DigitizationModule;
class Surface;

class TGeoDetectorElement : public IdentifiedDetectorElement {
 public:
  using ContextType = GeometryContext;

  TGeoDetectorElement(
      const Identifier& identifier, const TGeoNode& tGeoNode,
      const TGeoMatrix& tGeoMatrix = TGeoIdentity(),
      const std::string& axes = "XYZ", double scalor = 10.,
      std::shared_ptr<const Acts::ISurfaceMaterial> material = nullptr);

  TGeoDetectorElement(const Identifier& identifier, const TGeoNode& tGeoNode,
                      const Transform3& tgTransform,
                      const std::shared_ptr<const PlanarBounds>& tgBounds,
                      double tgThickness = 0.);

  TGeoDetectorElement(const Identifier& identifier, const TGeoNode& tGeoNode,
                      const Transform3& tgTransform,
                      const std::shared_ptr<const DiscBounds>& tgBounds,
                      double tgThickness = 0.);

  ~TGeoDetectorElement() override;

  Identifier identifier() const final;

  const Transform3& transform(const GeometryContext& gctx) const override;

  const Surface& surface() const override;

  Surface& surface() override;

  const std::shared_ptr<const DigitizationModule> digitizationModule()
      const final {
    return nullptr;
  };

  double thickness() const override;

  const TGeoNode& tgeoNode() const { return *m_detElement; }

 private:
  const TGeoNode* m_detElement{nullptr};
  Transform3 m_transform = Transform3::Identity();
  Identifier m_identifier;
  std::shared_ptr<const SurfaceBounds> m_bounds{nullptr};
  double m_thickness{0.};
  std::shared_ptr<Surface> m_surface{nullptr};
};

inline Identifier TGeoDetectorElement::identifier() const {
  return m_identifier;
}

inline const Transform3& TGeoDetectorElement::transform(
    const GeometryContext& /*gctx*/) const {
  return m_transform;
}

inline const Surface& TGeoDetectorElement::surface() const {
  return (*m_surface);
}

inline Surface& TGeoDetectorElement::surface() {
  return (*m_surface);
}

inline double TGeoDetectorElement::thickness() const {
  return m_thickness;
}

}  // namespace Acts