| Geant4 Cross Reference |
1 // 1
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25 //
26 // G4SextupoleMagField implementation
27 // by H. Burkhardt 23/10/2019
28 // -------------------------------------------
29
30 #include "G4SextupoleMagField.hh"
31 #include "G4RotationMatrix.hh"
32
33 // -------------------------------------------
34
35 namespace
36 {
37 G4RotationMatrix IdentityMatrix;
38 }
39
40 G4SextupoleMagField::G4SextupoleMagField(G4dou
41 {
42 fGradient = pGradient;
43 fpMatrix = &IdentityMatrix;
44 }
45
46 G4SextupoleMagField::G4SextupoleMagField(G4dou
47 const
48 G4Rot
49 {
50 fGradient = pGradient ;
51 fOrigin = pOrigin ;
52 fpMatrix = pMatrix ;
53 }
54
55 G4Field* G4SextupoleMagField::Clone() const
56 {
57 return new G4SextupoleMagField(fGradient, fO
58 }
59
60 // -------------------------------------------
61
62 G4SextupoleMagField::~G4SextupoleMagField() =
63
64 void G4SextupoleMagField::GetFieldValue( const
65
66 // with displaced origin and rotation
67 {
68 G4ThreeVector r_global = G4ThreeVector(
69 y[0]
70 y[1]
71 y[2]
72
73 const G4ThreeVector r_local = (*fpMatrix) *
74 const G4ThreeVector B_local( fGradient * r_l
75 const G4ThreeVector B_global = fpMatrix->inv
76
77 B[0] = B_global.x() ;
78 B[1] = B_global.y() ;
79 B[2] = B_global.z() ;
80 }
81