Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/include/G4QSSDriver.hh

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
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 24 // ********************************************************************
 25 //
 26 // G4QSSDriver
 27 //
 28 // QSS Interpolator Driver
 29 
 30 // Authors: Lucio Santi, Rodrigo Castro (Univ. Buenos Aires) - 2018-2021
 31 // --------------------------------------------------------------------
 32 #ifndef G4QSSDriver_HH
 33 #define G4QSSDriver_HH 1
 34 
 35 #include "G4InterpolationDriver.hh"
 36 #include "G4QSSMessenger.hh"
 37 
 38 template <class T>
 39 class G4QSSDriver : public G4InterpolationDriver<T, true>
 40 {
 41   public:
 42 
 43     G4QSSDriver(T* stepper);
 44 
 45     // Hacky way of getting and setting precision parameters
 46     // from messenger on first run
 47     void OnStartTracking() override;
 48 
 49     G4QSSDriver(const G4QSSDriver&) = delete;
 50     const G4QSSDriver& operator=(const G4QSSDriver&) = delete;
 51 
 52     G4double AdvanceChordLimited(G4FieldTrack& track,
 53                                  G4double hstep,
 54                                  G4double eps,
 55                                  G4double chordDistance) override;
 56 
 57     void OnComputeStep(const G4FieldTrack* track) override
 58     {
 59       Base::OnComputeStep(track);
 60 #ifdef GEANT4_DUMP_STEPPER_STATS
 61       this->GetStepper()->stats.steps++;
 62 #endif
 63     }
 64 
 65     void SetPrecision(G4double dq_rel, G4double dq_min);
 66 
 67     G4double OneGoodStep(typename G4InterpolationDriver<T, true>::StepperIterator it,
 68                          field_utils::State& y,
 69                          field_utils::State& dydx,
 70                          G4double& hstep,
 71                          G4double epsStep,
 72                          G4double curveLength,
 73                          G4FieldTrack* track) override;
 74 
 75   private:
 76 
 77     using Base = G4InterpolationDriver<T, true>;
 78 
 79     G4bool initializedOnFirstRun = false;
 80 };
 81 
 82 #include "G4QSSDriver.icc"
 83 
 84 #endif
 85