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25 //
26 // G4UniformGravityField implementation
27 //
28 // Created: P.Gumplinger, 14.06.2011 - Adapted from G4UniformElectricField
29 // Thanks to P.Fierlinger (PSI), A.Capra and A.Fontana (INFN Pavia)
30 // -------------------------------------------------------------------
31
32 #include "G4UniformGravityField.hh"
33 #include "G4PhysicalConstants.hh"
34 #include "G4SystemOfUnits.hh"
35
36 // Construct from a 3-vector
37 //
38 G4UniformGravityField::G4UniformGravityField(const G4ThreeVector& FieldVector)
39 : G4Field ( true ) // Gravity flag *on*
40 {
41 fFieldComponents[0] = FieldVector.x();
42 fFieldComponents[1] = FieldVector.y();
43 fFieldComponents[2] = FieldVector.z();
44 }
45
46 // Construct from a double > default = -9.81 m*s^-2
47 G4UniformGravityField::G4UniformGravityField(const G4double gy)
48 : G4Field ( true )
49 {
50 fFieldComponents[0] = 0.0;
51 fFieldComponents[1] = gy;
52 fFieldComponents[2] = 0.0;
53 }
54
55 G4UniformGravityField::~G4UniformGravityField() = default;
56
57 G4UniformGravityField::G4UniformGravityField (const G4UniformGravityField& p)
58 : G4Field(p)
59 {
60 for (auto i=0; i<3; ++i)
61 {
62 fFieldComponents[i] = p.fFieldComponents[i];
63 }
64 }
65
66 G4UniformGravityField&
67 G4UniformGravityField::operator = (const G4UniformGravityField& p)
68 {
69 if (&p == this) { return *this; }
70 G4Field::operator=(p);
71 for (auto i=0; i<3; ++i)
72 {
73 fFieldComponents[i] = p.fFieldComponents[i];
74 }
75 return *this;
76 }
77
78 G4Field* G4UniformGravityField::Clone() const
79 {
80 return new G4UniformGravityField( G4ThreeVector(fFieldComponents[0],
81 fFieldComponents[1],
82 fFieldComponents[2]) );
83 }
84
85 // -------------------------------------------------------------------
86
87 void G4UniformGravityField::GetFieldValue (const G4double [4],
88 G4double* G ) const
89 {
90 G[0]= fFieldComponents[0];
91 G[1]= fFieldComponents[1];
92 G[2]= fFieldComponents[2];
93 }
94