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25 // 25 //
26 // G4Mag_UsualEqRhs << 26 //
>> 27 // $Id: G4Mag_UsualEqRhs.hh,v 1.7 2006/06/29 18:23:12 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-09-01-patch-03 $
>> 29 //
>> 30 //
>> 31 // class G4Mag_UsualEqRhs
27 // 32 //
28 // Class description: 33 // Class description:
29 // 34 //
30 // This is the standard right-hand side for eq 35 // This is the standard right-hand side for equation of motion.
31 // The only case another is required is when u 36 // The only case another is required is when using a moving reference
32 // frame ... or extending the class to include 37 // frame ... or extending the class to include additional Forces,
33 // eg an electric field 38 // eg an electric field
34 39
35 // Created: J.Apostolakis, CERN - 13.01.1997 << 40 // History:
>> 41 // - Created: J. Apostolakis, January 13th 1997.
36 // ------------------------------------------- 42 // --------------------------------------------------------------------
>> 43
37 #ifndef G4MAG_USUAL_EQRHS 44 #ifndef G4MAG_USUAL_EQRHS
38 #define G4MAG_USUAL_EQRHS 45 #define G4MAG_USUAL_EQRHS
39 46
40 #include "G4Mag_EqRhs.hh" 47 #include "G4Mag_EqRhs.hh"
41 #include "G4ChargeState.hh" <<
42 48
43 class G4MagneticField; 49 class G4MagneticField;
44 50
45 class G4Mag_UsualEqRhs : public G4Mag_EqRhs 51 class G4Mag_UsualEqRhs : public G4Mag_EqRhs
46 { 52 {
47 public: << 53 public: // with description
48 54
49 G4Mag_UsualEqRhs( G4MagneticField* MagFie 55 G4Mag_UsualEqRhs( G4MagneticField* MagField );
50 ~G4Mag_UsualEqRhs() override; << 56 ~G4Mag_UsualEqRhs();
51 // Constructor and destructor. No actio 57 // Constructor and destructor. No actions.
52 58
53 void EvaluateRhsGivenB( const G4double y[ 59 void EvaluateRhsGivenB( const G4double y[],
54 const G4double B[ 60 const G4double B[3],
55 G4double dy << 61 G4double dydx[] ) const;
56 // Given the value of the magnetic fiel 62 // Given the value of the magnetic field B, this function
57 // calculates the value of the derivati 63 // calculates the value of the derivative dydx.
58 64
59 void SetChargeMomentumMass( G4ChargeState << 65 virtual void SetChargeMomentumMass( G4double particleCharge, // in e+ units
60 G4double Mome << 66 G4double MomentumXc,
61 G4double mass << 67 G4double mass);
>> 68
>> 69 private:
>> 70
>> 71 G4double fInvCurrentMomentumXc; // This extra state enables us
>> 72 // to save a square root in a
>> 73 // critical method.
62 }; 74 };
63 75
64 #endif << 76 #endif /* G4MAG_USUAL_EQRHS */
65 77