| Geant4 Cross Reference |
1 //
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24 // ********************************************************************
25 //
26
27 #include "BoundedBrownianAction.hh"
28
29 #include "G4DNABoundingBox.hh"
30 #include "G4Molecule.hh"
31 #include "G4Track.hh"
32
33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34
35 BoundedBrownianAction::BoundedBrownianAction() : G4VUserBrownianAction() {}
36 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
37
38 G4double BoundedBrownianAction::GetDistanceToBoundary(const G4Track& track)
39 {
40 if (!fpBoundingBox->contains(track.GetPosition())) {
41 G4ExceptionDescription errMsg;
42 errMsg << "Point is out of box : " << *fpBoundingBox
43 << " of particle : " << GetIT(track)->GetName() << "(" << track.GetTrackID()
44 << ") : " << track.GetPosition();
45 G4Exception(
46 "BoundedBrownianAction::GetDistanceToBoundary"
47 "BoundedBrownianAction",
48 "BoundedBrownianAction", FatalErrorInArgument, errMsg);
49 }
50
51 auto dx = std::min(track.GetPosition().getX() - fpBoundingBox->Getxlo(),
52 fpBoundingBox->Getxhi() - track.GetPosition().getX());
53 auto dy = std::min(track.GetPosition().getY() - fpBoundingBox->Getylo(),
54 fpBoundingBox->Getyhi() - track.GetPosition().getY());
55 auto dz = std::min(track.GetPosition().getZ() - fpBoundingBox->Getzlo(),
56 fpBoundingBox->Getzhi() - track.GetPosition().getZ());
57 return std::min({dx, dy, dz});
58 }
59
60 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
61
62 void BoundedBrownianAction::Transport(G4ThreeVector& nextposition, G4Track*)
63 {
64 BouncingAction(nextposition);
65 }
66
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68
69 void BoundedBrownianAction::BouncingAction(G4ThreeVector& nextposition) const
70 {
71 // This algorithm is implemented based on Karamitros, Mathieu et al.2020,arXiv:2006.14225 (2020)
72 // https://doi.org/10.48550/arXiv.2006.14225
73 G4double RxM = fpBoundingBox->Getxhi();
74 G4double RyM = fpBoundingBox->Getyhi();
75 G4double RzM = fpBoundingBox->Getzhi();
76
77 G4double Rxm = fpBoundingBox->Getxlo();
78 G4double Rym = fpBoundingBox->Getylo();
79 G4double Rzm = fpBoundingBox->Getzlo();
80 G4double Lx = RxM - Rxm;
81 G4double Ly = RyM - Rym;
82 G4double Lz = RzM - Rzm;
83 G4double trunx = trunc(std::abs(nextposition.getX() - Rxm) / Lx);
84 G4double truny = trunc(std::abs(nextposition.getY() - Rym) / Ly);
85 G4double trunz = trunc(std::abs(nextposition.getZ() - Rzm) / Lz);
86 G4double hx = std::fmod(trunx, 2);
87 G4double hy = std::fmod(truny, 2);
88 G4double hz = std::fmod(trunz, 2);
89 G4double x = Rxm + hx * Lx + (1 - 2 * hx) * std::abs(std::fmod(nextposition.getX() - Rxm, Lx));
90 G4double y = Rym + hy * Ly + (1 - 2 * hy) * std::abs(std::fmod(nextposition.getY() - Rym, Ly));
91 G4double z = Rzm + hz * Lz + (1 - 2 * hz) * std::abs(std::fmod(nextposition.getZ() - Rzm, Lz));
92 nextposition.set(x, y, z);
93 }
94
95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
96