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25 //
26 //
27 /// file: RodChromosome.cc
28 /// brief: Implementation of virt chromosome class for rod chromosomes
29
30 #include "RodChromosome.hh"
31
32 #include "G4PhysicalConstants.hh"
33 #include "G4RandomDirection.hh"
34 #include "Randomize.hh"
35
36 #include <utility>
37
38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
39
40 const G4String RodChromosome::fShape = "rod";
41
42 RodChromosome::RodChromosome(const G4String& name, const G4ThreeVector& pos, const G4double& radius,
43 const G4double& height)
44 : VirtualChromosome(name),
45 fCenter(pos),
46 fRadius(radius),
47 fHeight(height),
48 fRotation(G4RotationMatrix())
49 {
50 fInverseRotation = fRotation.inverse();
51 }
52
53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54
55 RodChromosome::RodChromosome(const G4String& name, const G4ThreeVector& pos, const G4double& radius,
56 const G4double& height, const G4RotationMatrix& rot)
57 : VirtualChromosome(name), fCenter(pos), fRadius(radius), fHeight(height), fRotation(rot)
58 {
59 fInverseRotation = fRotation.inverse();
60 }
61
62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
63
64 RodChromosome::~RodChromosome() = default;
65
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67
68 G4bool RodChromosome::PointInChromosome(G4ThreeVector const& pos)
69 {
70 G4ThreeVector rpos = pos - fCenter;
71 rpos = fInverseRotation(rpos);
72
73 // in the cylinder?
74 bool height_ok;
75 bool radius_ok;
76 G4double height;
77 G4double rad2;
78
79 height = std::abs(rpos.getZ());
80 rad2 = rpos.getX() * rpos.getX() + rpos.getY() * rpos.getY();
81
82 height_ok = (height < fHeight);
83 radius_ok = (rad2 < (fRadius * fRadius));
84
85 G4bool in_cylinder = height_ok && radius_ok;
86 // in the circles at each end?
87 G4ThreeVector pos1 = rpos - G4ThreeVector(0, 0, height);
88 G4bool in_sphere1 = (pos1.mag2() < (fRadius * fRadius));
89 G4ThreeVector pos2 = rpos + G4ThreeVector(0, 0, height);
90 G4bool in_sphere2 = (pos2.mag2() < (fRadius * fRadius));
91
92 return (in_cylinder || in_sphere1 || in_sphere2);
93 }
94
95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
96
97 // NOTE: Not uniformly random
98 G4ThreeVector RodChromosome::RandomPointInChromosome()
99 {
100 G4ThreeVector point;
101 if (G4UniformRand() < 0.5) {
102 // in cylinder
103 G4double z = 2 * (G4UniformRand() - 0.5) * fHeight;
104 G4double theta = twopi * G4UniformRand();
105 G4double r = fRadius * std::pow(G4UniformRand(), 0.5);
106 G4double x = r * std::cos(theta);
107 G4double y = r * std::sin(theta);
108 point = G4ThreeVector(x, y, z);
109 }
110 else {
111 // in spheres
112 point = fRadius * std::pow(G4UniformRand(), 0.5) * G4RandomDirection();
113 if (point.getZ() < 0) {
114 // bottom half
115 point.setZ(point.getZ() - fHeight);
116 }
117 else {
118 // top half
119 point.setZ(point.getZ() + fHeight);
120 }
121 }
122 return fRotation(point) + fCenter;
123 }
124
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
126