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File indexing completed on 2025-03-13 09:12:19
0001 //----------------------------------*-C++-*----------------------------------// 0002 // Copyright 2023-2024 UT-Battelle, LLC, and other Celeritas developers. 0003 // See the top-level COPYRIGHT file for details. 0004 // SPDX-License-Identifier: (Apache-2.0 OR MIT) 0005 //---------------------------------------------------------------------------// 0006 //! \file geocel/g4vg/LogicalVolumeConverter.hh 0007 //---------------------------------------------------------------------------// 0008 #pragma once 0009 0010 #include <unordered_map> 0011 0012 #include "geocel/Types.hh" 0013 0014 //---------------------------------------------------------------------------// 0015 // Forward declarations 0016 //---------------------------------------------------------------------------// 0017 0018 class G4LogicalVolume; 0019 0020 namespace vecgeom 0021 { 0022 inline namespace cxx 0023 { 0024 class LogicalVolume; 0025 } 0026 } // namespace vecgeom 0027 //---------------------------------------------------------------------------// 0028 0029 namespace celeritas 0030 { 0031 namespace g4vg 0032 { 0033 //---------------------------------------------------------------------------// 0034 class SolidConverter; 0035 0036 //---------------------------------------------------------------------------// 0037 /*! 0038 * Convert a Geant4 base LV to a VecGeom LV. 0039 * 0040 * This does not convert or add any of the daughters, which must be placed as 0041 * physical volumes. 0042 */ 0043 class LogicalVolumeConverter 0044 { 0045 public: 0046 //!@{ 0047 //! \name Type aliases 0048 using arg_type = G4LogicalVolume const&; 0049 using result_type = vecgeom::LogicalVolume*; 0050 using MapLvVolId = std::unordered_map<G4LogicalVolume const*, VolumeId>; 0051 //!@} 0052 0053 public: 0054 explicit LogicalVolumeConverter(SolidConverter& convert_solid); 0055 0056 // Convert a volume 0057 result_type operator()(arg_type); 0058 0059 // Construct a mapping from G4 logical volume to VolumeId 0060 MapLvVolId make_volume_map() const; 0061 0062 private: 0063 //// DATA //// 0064 0065 SolidConverter& convert_solid_; 0066 std::unordered_map<G4LogicalVolume const*, result_type> cache_; 0067 0068 //// HELPER FUNCTIONS //// 0069 0070 // Convert an LV that's not in the cache 0071 result_type construct_base(arg_type); 0072 }; 0073 0074 //---------------------------------------------------------------------------// 0075 } // namespace g4vg 0076 } // namespace celeritas
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