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0001 // 0002 // ******************************************************************** 0003 // * License and Disclaimer * 0004 // * * 0005 // * The Geant4 software is copyright of the Copyright Holders of * 0006 // * the Geant4 Collaboration. It is provided under the terms and * 0007 // * conditions of the Geant4 Software License, included in the file * 0008 // * LICENSE and available at http://cern.ch/geant4/license . These * 0009 // * include a list of copyright holders. * 0010 // * * 0011 // * Neither the authors of this software system, nor their employing * 0012 // * institutes,nor the agencies providing financial support for this * 0013 // * work make any representation or warranty, express or implied, * 0014 // * regarding this software system or assume any liability for its * 0015 // * use. Please see the license in the file LICENSE and URL above * 0016 // * for the full disclaimer and the limitation of liability. * 0017 // * * 0018 // * This code implementation is the result of the scientific and * 0019 // * technical work of the GEANT4 collaboration. * 0020 // * By using, copying, modifying or distributing the software (or * 0021 // * any work based on the software) you agree to acknowledge its * 0022 // * use in resulting scientific publications, and indicate your * 0023 // * acceptance of all terms of the Geant4 Software license. * 0024 // ******************************************************************** 0025 // 0026 // G4AssemblyVolume 0027 // 0028 // Class description: 0029 // 0030 // G4AssemblyVolume is a helper class to make the build process of geometry 0031 // easier. It allows one to combine several volumes together in an arbitrary way 0032 // in 3D space and then work with the result as with a single logical volume 0033 // for placement. 0034 // The resulting objects are independent copies of each of the assembled 0035 // logical volumes. The placements are not, however, bound one to each other 0036 // when placement is done. They are seen as independent physical volumes in 0037 // space. 0038 0039 // Radovan Chytracek, John Apostolakis, Gabriele Cosmo: created - November 2000 0040 // Ivana Hrivnacova: extended to support assembly of assemblies 0041 // of volumes and reflections - March 2006 0042 // ---------------------------------------------------------------------- 0043 #ifndef G4_ASSEMBLYVOLUME_HH 0044 #define G4_ASSEMBLYVOLUME_HH 0045 0046 #include <vector> 0047 0048 #include "G4Transform3D.hh" 0049 #include "G4AssemblyTriplet.hh" 0050 0051 class G4VPhysicalVolume; 0052 0053 class G4AssemblyVolume 0054 { 0055 public: 0056 0057 G4AssemblyVolume(); 0058 G4AssemblyVolume( G4LogicalVolume* volume, 0059 G4ThreeVector& translation, 0060 G4RotationMatrix* rotation); 0061 ~G4AssemblyVolume(); 0062 // 0063 // Constructors & destructor. 0064 // At destruction all the generated physical volumes and associated 0065 // rotation matrices of the imprints will be destroyed. 0066 // 0067 // The rotation matrix passed as argument can be nullptr (identity) or an 0068 // address even of an object on the upper stack frame. During assembly 0069 // imprint, a new matrix is created anyway and it is kept track of it so 0070 // it can be automatically deleted later at the end of the application. 0071 // This policy is adopted since user has no control on the way the 0072 // rotations are combined. 0073 0074 void AddPlacedVolume( G4LogicalVolume* pPlacedVolume, 0075 G4ThreeVector& translation, 0076 G4RotationMatrix* rotation); 0077 // 0078 // Place the given volume 'pPlacedVolume' inside the assembly. 0079 // 0080 // The adopted approach: 0081 // 0082 // - Place it w.r.t. the assembly coordinate system. 0083 // This step is applied to each of the participating volumes. 0084 // 0085 // The other possible approaches: 0086 // 0087 // - Place w.r.t. the firstly added volume. 0088 // When placed the first, the virtual coordinate system becomes 0089 // the coordinate system of the first one. 0090 // Every next volume being added into the assembly will be placed 0091 // w.r.t to the first one. 0092 // 0093 // - Place w.r.t the last placed volume. 0094 // When placed the first, the virtual coordinate system becomes 0095 // the coordinate system of the first one. 0096 // Every next volume being added into the assembly will be placed 0097 // w.r.t to the previous one. 0098 // 0099 // The rotation matrix passed as argument can be nullptr (identity) or an 0100 // address even of an object on the upper stack frame. During assembly 0101 // imprint, a new matrix is created anyway and it is kept track of it so 0102 // it can be automatically deleted later at the end of the application. 0103 // This policy is adopted since user has no control on the way the 0104 // rotations are combined. 0105 0106 void AddPlacedVolume( G4LogicalVolume* pPlacedVolume, 0107 G4Transform3D& transformation); 0108 // 0109 // The same as previous, but takes complete 3D transformation in space 0110 // as its argument. 0111 0112 void AddPlacedAssembly( G4AssemblyVolume* pAssembly, 0113 G4Transform3D& transformation); 0114 // 0115 // The same as previous AddPlacedVolume(), but takes an assembly volume 0116 // as its argument. 0117 0118 void AddPlacedAssembly( G4AssemblyVolume* pAssembly, 0119 G4ThreeVector& translation, 0120 G4RotationMatrix* rotation); 0121 // 0122 // The same as above AddPlacedVolume(), but takes an assembly volume 0123 // as its argument with translation and rotation. 0124 0125 void MakeImprint( G4LogicalVolume* pMotherLV, 0126 G4ThreeVector& translationInMother, 0127 G4RotationMatrix* pRotationInMother, 0128 G4int copyNumBase = 0, 0129 G4bool surfCheck = false ); 0130 // 0131 // Creates instance of an assembly volume inside the given mother volume. 0132 0133 void MakeImprint( G4LogicalVolume* pMotherLV, 0134 G4Transform3D& transformation, 0135 G4int copyNumBase = 0, 0136 G4bool surfCheck = false ); 0137 // 0138 // The same as previous Imprint() method, but takes complete 3D 0139 // transformation in space as its argument. 0140 0141 inline std::vector<G4VPhysicalVolume*>::iterator GetVolumesIterator(); 0142 inline std::size_t TotalImprintedVolumes() const; 0143 // 0144 // Methods to access the physical volumes imprinted with the assembly. 0145 inline G4Transform3D& GetImprintTransformation(unsigned int imprintID); 0146 // Method to access transformation for each imprint 0147 0148 inline std::vector<G4AssemblyTriplet>::iterator GetTripletsIterator(); 0149 inline std::size_t TotalTriplets() const; 0150 // 0151 // Methods to access the triplets which are part of the assembly 0152 0153 inline unsigned int GetImprintsCount() const; 0154 // 0155 // Return the number of made imprints. 0156 0157 unsigned int GetInstanceCount() const; 0158 // 0159 // Return the number of existing instance of G4AssemblyVolume class. 0160 0161 inline unsigned int GetAssemblyID() const; 0162 // 0163 // Return instance number of this concrete object. 0164 0165 protected: 0166 0167 inline void SetInstanceCount( unsigned int value ); 0168 inline void SetAssemblyID( unsigned int value ); 0169 0170 void InstanceCountPlus(); 0171 void InstanceCountMinus(); 0172 0173 inline void SetImprintsCount( unsigned int value ); 0174 inline void ImprintsCountPlus(); 0175 inline void ImprintsCountMinus(); 0176 // 0177 // Internal counting mechanism, used to compute unique the names of 0178 // physical volumes created by MakeImprint() methods. 0179 0180 private: 0181 0182 void MakeImprint( G4AssemblyVolume* pAssembly, 0183 G4LogicalVolume* pMotherLV, 0184 G4Transform3D& transformation, 0185 G4int copyNumBase = 0, 0186 G4bool surfCheck = false ); 0187 // 0188 // Function for placement of the given assembly in the given mother 0189 // (called recursively if the assembly contains an assembly). 0190 0191 private: 0192 0193 std::vector<G4AssemblyTriplet> fTriplets; 0194 // 0195 // Participating volumes represented as a vector of 0196 // <logical volume, translation, rotation>. 0197 0198 std::vector<G4VPhysicalVolume*> fPVStore; 0199 // 0200 // We need to keep list of physical volumes created by MakeImprint() 0201 // in order to be able to cleanup the objects when not needed anymore. 0202 // This requires the user to keep assembly objects in memory during the 0203 // whole job or during the life-time of G4Navigator, logical volume store 0204 // and physical volume store keep pointers to physical volumes generated 0205 // by the assembly volume. 0206 // When an assembly object is about to die it will destroy all its 0207 // generated physical volumes and rotation matrices as well ! 0208 0209 unsigned int fImprintsCounter; 0210 // 0211 // Number of imprints of the given assembly volume. 0212 0213 static G4ThreadLocal unsigned int fsInstanceCounter; 0214 // 0215 // Class instance counter. 0216 0217 unsigned int fAssemblyID = 0; 0218 // 0219 // Assembly object ID derived from instance counter at construction time. 0220 0221 std::map<unsigned int, G4Transform3D> fImprintsTransf; 0222 // 0223 // Container of transformations for each imprint (used in GDML) 0224 }; 0225 0226 #include "G4AssemblyVolume.icc" 0227 0228 #endif // G4_ASSEMBLYVOLUME_HH
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