Gabriele Cosmo
72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4Mag_UsualEqRhs.hh,v 1.5 2002/04/29 16:54:02 japost Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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//
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// class G4Mag_UsualEqRhs
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//
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// Class description:
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//
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// This is the standard right-hand side for equation of motion.
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// The only case another is required is when using a moving reference
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// frame ... or extending the class to include additional Forces,
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// eg an electric field
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// History:
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// - Created: J. Apostolakis, January 13th 1997.
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#ifndef G4MAG_USUAL_EQRHS
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#define G4MAG_USUAL_EQRHS
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#include "G4Mag_EqRhs.hh"
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#include "G4MagneticField.hh"
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class G4Mag_UsualEqRhs : public G4Mag_EqRhs
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{
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public: // with description
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G4Mag_UsualEqRhs( G4MagneticField* MagField )
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: G4Mag_EqRhs( MagField ) {;}
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~G4Mag_UsualEqRhs() {;}
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// Constructor and destructor. No actions.
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void EvaluateRhsGivenB( const G4double y[],
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const G4double B[3],
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G4double dydx[] ) const;
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// Given the value of the magnetic field B, this function
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// calculates the value of the derivative dydx.
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virtual void SetChargeMomentumMass( G4double particleCharge, // in e+ units
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G4double MomentumXc,
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G4double mass);
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private: // without description
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G4double fInvCurrentMomentumXc; // This extra state enables us
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// to save a square root in a
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// critical method.
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};
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#endif /* G4MAG_USUAL_EQRHS */
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