00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id: G4MagneticField.hh 69786 2013-05-15 09:38:51Z gcosmo $ 00028 // 00029 // 00030 // class G4MagneticField 00031 // 00032 // Class description: 00033 // 00034 // Magnetic Field abstract class, implements inquiry function interface. 00035 00036 // History: 00037 // - Created. JA, January 13th, 1996. 00038 // -------------------------------------------------------------------- 00039 00040 #ifndef G4MAGNETIC_FIELD_DEF 00041 #define G4MAGNETIC_FIELD_DEF 00042 00043 #include "G4Types.hh" 00044 #include "G4ElectroMagneticField.hh" 00045 00046 class G4MagneticField : public G4ElectroMagneticField 00047 { 00048 public: // with description 00049 00050 G4MagneticField(); 00051 virtual ~G4MagneticField(); 00052 // Constructor and destructor. No actions. 00053 00054 G4MagneticField(const G4MagneticField &r); 00055 G4MagneticField& operator = (const G4MagneticField &p); 00056 // Copy constructor & assignment operator. 00057 00058 G4bool DoesFieldChangeEnergy() const { return false; } 00059 // Since a pure magnetic field does not change track energy 00060 00061 virtual void GetFieldValue( const G4double Point[4], 00062 G4double *Bfield ) const = 0; 00063 }; 00064 00065 #endif /* G4MAGNETIC_FIELD_DEF */