Geant4 Cross Reference

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Geant4/examples/extended/field/BlineTracer/include/G4BlineEquation.hh

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 25 //
 26 /// \file field/BlineTracer/include/G4BlineEquation.hh
 27 /// \brief Definition of the G4BlineEquation class
 28 //
 29 //
 30 //
 31 //
 32 // --------------------------------------------------------------------
 33 //
 34 // G4BlineEquation
 35 //
 36 // Class description:
 37 //
 38 // This class defines the equation of motion needed to trace magnetic
 39 // field lines in the simulation.
 40 
 41 // --------------------------------------------------------------------
 42 // Author: Laurent Desorgher (desorgher@phim.unibe.ch)
 43 //         Created - 2003-10-06
 44 // --------------------------------------------------------------------
 45 #ifndef G4BlineEquation_h
 46 #define G4BlineEquation_h 1
 47 
 48 #include "G4Mag_EqRhs.hh"
 49 #include "G4MagneticField.hh"
 50 
 51 class G4BlineEquation : public G4Mag_EqRhs
 52 {
 53   public:  // with description
 54     G4BlineEquation(G4MagneticField* magField);
 55     ~G4BlineEquation() override = default;
 56     // Constructor and destructor.
 57 
 58     void EvaluateRhsGivenB(const G4double y[], const G4double B[3], G4double dydx[]) const override;
 59     // Given the value of the magnetic field B, this function
 60     // calculates the value of the derivative dydx.
 61 
 62     void SetBackwardDirectionOfIntegration(G4bool abool);
 63 
 64   private:
 65     G4bool fBackward_direction = false;
 66     G4double fDirection = 1.;
 67 };
 68 
 69 #endif
 70