Geant4 Cross Reference |
1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer 3 // * License and Disclaimer * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. 9 // * include a list of copyright holders. * 10 // * 10 // * * 11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // G4RKG3_Stepper << 26 // >> 27 // >> 28 // $Id: G4RKG3_Stepper.hh,v 1.13.6.1 2010/09/08 14:25:35 gcosmo Exp $ >> 29 // GEANT4 tag $Name: geant4-09-03-patch-02 $ >> 30 // >> 31 // >> 32 // >> 33 // class G4RKG3_Stepper 27 // 34 // 28 // Class description: 35 // Class description: 29 // 36 // 30 // Runga-Kutta integrator stepper from Geant3. << 37 // Integrator Runga-Kutta Stepper from Geant3. 31 << 38 // 32 // Created: J.Apostolakis, V.Grichine - 30.01. << 39 // History: >> 40 // - Created. J.Apostolakis, V.Grichine - 30.01.97 33 // ------------------------------------------- 41 // ------------------------------------------------------------------- 34 #ifndef G4RKG3_STEPPER_HH << 42 35 #define G4RKG3_STEPPER_HH << 43 #ifndef G4RKG3_Stepper_hh >> 44 #define G4RKG3_Stepper_hh 36 45 37 #include "G4Types.hh" 46 #include "G4Types.hh" 38 #include "G4MagIntegratorStepper.hh" 47 #include "G4MagIntegratorStepper.hh" 39 #include "G4ThreeVector.hh" 48 #include "G4ThreeVector.hh" 40 49 41 class G4Mag_EqRhs; 50 class G4Mag_EqRhs; 42 51 43 class G4RKG3_Stepper : public G4MagIntegratorS 52 class G4RKG3_Stepper : public G4MagIntegratorStepper 44 { 53 { 45 public: << 54 public: // with description 46 55 47 G4RKG3_Stepper(G4Mag_EqRhs* EqRhs); << 56 G4RKG3_Stepper(G4Mag_EqRhs *EqRhs); 48 // Integrate over 6 variables only: pos 57 // Integrate over 6 variables only: position & velocity. 49 // Not implemented yet ! 58 // Not implemented yet ! 50 59 51 ~G4RKG3_Stepper() override; << 60 ~G4RKG3_Stepper(); 52 61 53 void Stepper( const G4double yIn[], 62 void Stepper( const G4double yIn[], 54 const G4double dydx[], 63 const G4double dydx[], 55 G4double h, 64 G4double h, 56 G4double yOut[], 65 G4double yOut[], 57 G4double yErr[] ) over << 66 G4double yErr[] ); 58 // The method which must be provided, ev 67 // The method which must be provided, even if less efficient. 59 68 60 G4double DistChord() const override ; << 69 G4double DistChord() const ; 61 70 62 void StepNoErr( const G4double tIn[8], 71 void StepNoErr( const G4double tIn[8], 63 const G4double dydx[6], 72 const G4double dydx[6], 64 G4double Step, 73 G4double Step, 65 G4double tOut[8], 74 G4double tOut[8], 66 G4double B[3] ); 75 G4double B[3] ); 67 // Integrator RK Stepper from G3 with on 76 // Integrator RK Stepper from G3 with only two field evaluation per 68 // Step. It is used in propagation initi 77 // Step. It is used in propagation initial Step by small substeps 69 // after solution error and delta geomet 78 // after solution error and delta geometry considerations. 70 // B[3] is magnetic field which is passe 79 // B[3] is magnetic field which is passed from substep to substep. 71 80 72 void StepWithEst( const G4double tIn[8], 81 void StepWithEst( const G4double tIn[8], 73 const G4double dydx[6], 82 const G4double dydx[6], 74 G4double Step, 83 G4double Step, 75 G4double tOut[8], 84 G4double tOut[8], 76 G4double& alpha2, 85 G4double& alpha2, 77 G4double& beta2, 86 G4double& beta2, 78 const G4double B1[3], 87 const G4double B1[3], 79 G4double B2[3] ); 88 G4double B2[3] ); 80 // Integrator for RK from G3 with evalua << 89 // Integrator for RK from G3 with evaluation of error in solution and delta 81 // delta geometry based on naive similar << 90 // geometry based on naive similarity with the case of uniform magnetic field. 82 // magnetic field. << 83 // B1[3] is input and is the first magn 91 // B1[3] is input and is the first magnetic field values 84 // B2[3] is output and is the final magn 92 // B2[3] is output and is the final magnetic field values. 85 93 86 inline G4int IntegratorOrder() const overr << 94 public: // without description >> 95 >> 96 G4int IntegratorOrder() const { return 4; } 87 97 88 private: 98 private: 89 99 90 G4ThreeVector fyInitial, 100 G4ThreeVector fyInitial, 91 fyMidPoint, 101 fyMidPoint, 92 fyFinal; 102 fyFinal; 93 G4ThreeVector fpInitial; << 103 G4ThreeVector fpInitial; 94 G4ThreeVector BfldIn; << 104 G4ThreeVector BfldIn; 95 G4double hStep = 0.0; << 105 G4double hStep; >> 106 >> 107 G4Mag_EqRhs* fPtrMagEqOfMot; 96 }; 108 }; 97 109 98 #endif 110 #endif 99 111