Acts/Geometry/ITrackingGeometryBuilder.hpp

0001 // This file is part of the Acts project.
0002 //
0003 // Copyright (C) 2016-2018 CERN for the benefit of the Acts project
0004 //
0005 // This Source Code Form is subject to the terms of the Mozilla Public
0006 // License, v. 2.0. If a copy of the MPL was not distributed with this
0007 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
0008
0009 #pragma once
0010 #include "Acts/Geometry/GeometryContext.hpp"
0011
0012 #include <memory>
0013
0014 namespace Acts {
0015 class TrackingGeometry;
0016
0017 /// @class ITrackingGeometryBuilder
0018 ///
0019 /// Interface class for the TrackingGeometry building,
0020 /// this is used by the TrackingGeometrySvc to build the geometry.
0021 ///
0022 /// The TrackingGeometry is written to the detector store and thus not created
0023 /// as a std::shared_ptr.
0024 ///
0025 /// The TrackingGeometry is returned as a non-const object in order to recreate
0026 /// from conditions callback if necessary.
0027 ///
0028 class ITrackingGeometryBuilder {
0029  public:
0030   /// Virtual destructor
0031   virtual ~ITrackingGeometryBuilder() = default;
0032
0033   /// TrackingGeometry Interface method
0034   ///
0035   /// @param gctx is the geometry context for witch the geometry is built
0036   ///
0037   /// @return unique pointer to a newly created TrackingGeometry
0038   virtual std::unique_ptr<const TrackingGeometry> trackingGeometry(
0039       const GeometryContext& gctx) const = 0;
0040 };
0041 }  // namespace Acts