Acts/Vertexing/TrackLinearizer.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/EventData/BoundTrackParameters.hpp"
0012 #include "Acts/Geometry/GeometryContext.hpp"
0013 #include "Acts/MagneticField/MagneticFieldContext.hpp"
0014 #include "Acts/MagneticField/MagneticFieldProvider.hpp"
0015 #include "Acts/Utilities/Delegate.hpp"
0016 #include "Acts/Utilities/Result.hpp"
0017
0018 namespace Acts {
0019
0020 struct LinearizedTrack;
0021 class Surface;
0022
0023 /// @typedef TrackLinearizer
0024 /// A delegate for linearizing a track at a given point in time and surface.
0025 /// @note Used for track fitting and vertexing.
0026 using TrackLinearizer = Delegate<Result<LinearizedTrack>(
0027     const BoundTrackParameters& params, double linPointTime,
0028     const Surface& perigeeSurface, const GeometryContext& gctx,
0029     const MagneticFieldContext& mctx,
0030     MagneticFieldProvider::Cache& fieldCache)>;
0031
0032 }  // namespace Acts