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: G4UniformMagField.hh 69786 2013-05-15 09:38:51Z gcosmo $ 00028 // 00029 // 00030 // class G4UniformMagField 00031 // 00032 // Class description: 00033 // 00034 // Class for creation of Uniform Magnetic Field. 00035 00036 // History: 00037 // - 30.01.97 V.Grichine, Created. 00038 // - 01.08.97 J.Apostolakis, cleanup, new 3-vector constructor, 00039 // and removal of helix-stepper (to separate file). 00040 // - 05.11.97 G.Cosmo, added copy constructor and assignment operator. 00041 00042 #ifndef G4UNIFORMMAGFIELD_HH 00043 #define G4UNIFORMMAGFIELD_HH 00044 00045 #include "G4Types.hh" 00046 #include "G4ThreeVector.hh" 00047 #include "G4MagneticField.hh" 00048 00049 class G4UniformMagField : public G4MagneticField 00050 { 00051 public: // with description 00052 00053 G4UniformMagField(const G4ThreeVector& FieldVector ); 00054 // A field with value equal to FieldVector. 00055 00056 G4UniformMagField(G4double vField, 00057 G4double vTheta, 00058 G4double vPhi ) ; 00059 00060 virtual ~G4UniformMagField() ; 00061 00062 G4UniformMagField(const G4UniformMagField &p); 00063 G4UniformMagField& operator = (const G4UniformMagField &p); 00064 // Copy constructor and assignment operator. 00065 00066 virtual void GetFieldValue(const G4double yTrack[4], 00067 G4double *MagField) const ; 00068 00069 void SetFieldValue(const G4ThreeVector& newFieldValue); 00070 00071 G4ThreeVector GetConstantFieldValue() const; 00072 // Return the field value 00073 00074 private: 00075 00076 G4double fFieldComponents[3] ; 00077 }; 00078 00079 #endif