Acts/Geometry/ITrackingGeometryBuilder.hpp

0001 // This file is part of the ACTS project.
0002 //
0003 // Copyright (C) 2016 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 https://mozilla.org/MPL/2.0/.
0008
0009 #pragma once
0010
0011 #include "Acts/Geometry/GeometryContext.hpp"
0012
0013 #include <memory>
0014
0015 namespace Acts {
0016 class TrackingGeometry;
0017
0018 /// @class ITrackingGeometryBuilder
0019 ///
0020 /// Interface class for the TrackingGeometry building,
0021 /// this is used by the TrackingGeometrySvc to build the geometry.
0022 ///
0023 /// The TrackingGeometry is written to the detector store and thus not created
0024 /// as a std::shared_ptr.
0025 ///
0026 /// The TrackingGeometry is returned as a non-const object in order to recreate
0027 /// from conditions callback if necessary.
0028 ///
0029 class ITrackingGeometryBuilder {
0030  public:
0031   /// Virtual destructor
0032   virtual ~ITrackingGeometryBuilder() = default;
0033
0034   /// TrackingGeometry Interface method
0035   ///
0036   /// @param gctx is the geometry context for witch the geometry is built
0037   ///
0038   /// @return unique pointer to a newly created TrackingGeometry
0039   virtual std::unique_ptr<const TrackingGeometry> trackingGeometry(
0040       const GeometryContext& gctx) const = 0;
0041 };
0042 }  // namespace Acts