ActsFatras/Selectors/SurfaceSelectors.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 namespace Acts {
0012 class Surface;
0013 }
0014
0015 namespace ActsFatras {
0016
0017 /// Do not select any surface, ever.
0018 struct NoSurface {
0019   constexpr bool operator()(const Acts::Surface& /*surface*/) const {
0020     return false;
0021   }
0022 };
0023
0024 /// Select every surface.
0025 struct EverySurface {
0026   constexpr bool operator()(const Acts::Surface& /*surface*/) const {
0027     return true;
0028   }
0029 };
0030
0031 }  // namespace ActsFatras