include/Geant4/G4UniformGravityField.hh

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0025 //
0026 // G4UniformGravifyField
0027 //
0028 // Class description:
0029 //
0030 // Class for creation of Uniform Gravitation Field.
0031
0032 // Created: P.Gumplinger, 14.06.2011 - Adapted from G4UniformElectricField
0033 //          Thanks to P.Fierlinger (PSI), A.Capra and A.Fontana (INFN Pavia)
0034 // -------------------------------------------------------------------
0035 #ifndef G4UNIFORMGRAVITYFIELD_HH
0036 #define G4UNIFORMGRAVITYFIELD_HH
0037
0038 #include <CLHEP/Units/PhysicalConstants.h>
0039
0040 #include "G4Types.hh"
0041 #include "G4ThreeVector.hh"
0042 #include "G4Field.hh"
0043
0044 class G4UniformGravityField : public G4Field
0045 {
0046   public:
0047
0048     G4UniformGravityField(const G4ThreeVector& FieldVector );
0049       // A field with value equal to FieldVector.
0050
0051     G4UniformGravityField(const G4double gy = -9.81*CLHEP::m/CLHEP::s/CLHEP::s);
0052       // Standard Gravitational field on earth's surface
0053
0054    ~G4UniformGravityField() override;
0055
0056     G4UniformGravityField(const G4UniformGravityField& p);
0057     G4UniformGravityField& operator=(const G4UniformGravityField& p);
0058       // Copy constructor and assignment operator
0059
0060     inline G4bool DoesFieldChangeEnergy() const override { return true; }
0061       // Since a gravitational field can change track energy
0062
0063     void GetFieldValue(const G4double Point[4], G4double* field) const override;
0064
0065     G4Field* Clone() const override;
0066
0067   private:
0068
0069     G4double fFieldComponents[3];
0070 };
0071
0072 #endif