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25
26 /// \file materials/src/G4LatticePhysical.cc
27 /// \brief Implementation of the G4LatticePhysical class
28 //
29 //
30 // 20131115 Save rotation results in local variable, report verbosely
31 // 20131116 Replace G4Transform3D with G4RotationMatrix
32
33 #include "G4LatticePhysical.hh"
34
35 #include "G4LatticeLogical.hh"
36 #include "G4PhysicalConstants.hh"
37 #include "G4RotationMatrix.hh"
38 #include "G4SystemOfUnits.hh"
39
40 // Unit vectors defined for convenience (avoid memory churn)
41
42 namespace
43 {
44 G4ThreeVector xhat(1, 0, 0), yhat(0, 1, 0), zhat(0, 0, 1), nullVec(0, 0, 0);
45 }
46
47
48 G4LatticePhysical::G4LatticePhysical(const G4LatticeLogical* Lat, const G4RotationMatrix* Rot)
49 : fLattice(Lat)
50 {
51 SetPhysicalOrientation(Rot);
52 }
53
54
55 void G4LatticePhysical::SetPhysicalOrientation(const G4RotationMatrix* Rot)
56 {
57 if (Rot == nullptr) { // No orientation specified
58 fLocalToGlobal = fGlobalToLocal = G4RotationMatrix::IDENTITY;
59 }
60 else {
61 fLocalToGlobal = fGlobalToLocal = *Rot; // Frame rotation
62 fGlobalToLocal.invert();
63 }
64
65 if (verboseLevel > 0) {
66 G4cout << "G4LatticePhysical::SetPhysicalOrientation ";
67 if (Rot != nullptr) { G4cout << *Rot; }
68 else { G4cout << " 0 "; }
69 G4cout << "\nfLocalToGlobal: " << fLocalToGlobal << "\nfGlobalToLocal: " << fGlobalToLocal
70 << G4endl;
71 }
72 }
73
74
75 void G4LatticePhysical::SetLatticeOrientation(G4double t_rot, G4double p_rot)
76 {
77 fTheta = t_rot;
78 fPhi = p_rot;
79
80 if (verboseLevel != 0) {
81 G4cout << "G4LatticePhysical::SetLatticeOrientation " << fTheta << " " << fPhi << G4endl;
82 }
83 }
84
85
86 void G4LatticePhysical::SetMillerOrientation(G4int l, G4int k, G4int n)
87 {
88 fTheta = halfpi - std::atan2(n + 0.000001, l + 0.000001);
89 fPhi = halfpi - std::atan2(l + 0.000001, k + 0.000001);
90
91 if (verboseLevel != 0) {
92 G4cout << "G4LatticePhysical::SetMillerOrientation(" << l << k << n << ") : " << fTheta << " "
93 << fPhi << G4endl;
94 }
95 }
96
97
98 ///////////////////////////////
99 // Loads the group velocity in m/s
100 /////////////////////////////
101 G4double G4LatticePhysical::MapKtoV(G4int polarizationState, G4ThreeVector k) const
102 {
103 if (verboseLevel > 1) {
104 G4cout << "G4LatticePhysical::MapKtoV " << k << G4endl;
105 }
106
107 k.rotate(yhat, fTheta).rotate(zhat, fPhi);
108 return fLattice->MapKtoV(polarizationState, k);
109 }
110
111 ///////////////////////////////
112 // Loads the normalized direction vector along VG
113 ///////////////////////////////
114 G4ThreeVector G4LatticePhysical::MapKtoVDir(G4int polarizationState, G4ThreeVector k) const
115 {
116 if (verboseLevel > 1) {
117 G4cout << "G4LatticePhysical::MapKtoVDir " << k << G4endl;
118 }
119
120 k.rotate(yhat, fTheta).rotate(zhat, fPhi);
121
122 G4ThreeVector VG = fLattice->MapKtoVDir(polarizationState, k);
123
124 return VG.rotate(zhat, -fPhi).rotate(yhat, -fTheta);
125 }
126
127
128 // Apply orientation transforms to specified vector
129
130 G4ThreeVector G4LatticePhysical::RotateToGlobal(const G4ThreeVector& dir) const
131 {
132 if (verboseLevel > 1) {
133 G4cout << "G4LatticePhysical::RotateToGlobal " << dir << "\nusing fLocalToGlobal "
134 << fLocalToGlobal << G4endl;
135 }
136
137 G4ThreeVector result = fLocalToGlobal * dir;
138 if (verboseLevel > 1) {
139 G4cout << " result " << result << G4endl;
140 }
141
142 return result;
143 }
144
145 G4ThreeVector G4LatticePhysical::RotateToLocal(const G4ThreeVector& dir) const
146 {
147 if (verboseLevel > 1) {
148 G4cout << "G4LatticePhysical::RotateToLocal " << dir << "\nusing fGlobalToLocal "
149 << fGlobalToLocal << G4endl;
150 }
151
152 G4ThreeVector result = fGlobalToLocal * dir;
153 if (verboseLevel > 1) {
154 G4cout << " result " << result << G4endl;
155 }
156
157 return result;
158 }
159