| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
7 // * conditions of the Geant4 Software License
8 // * LICENSE and available at http://cern.ch/
9 // * include a list of copyright holders.
10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 //
28 // -------------------------------------------
29 // GEANT 4 class source file
30 //
31 // G4SamplingPostStepAction.cc
32 //
33 // -------------------------------------------
34
35 #include "G4SamplingPostStepAction.hh"
36 #include "G4Track.hh"
37 #include "G4ParticleChange.hh"
38 #include "G4VImportanceSplitExaminer.hh"
39 #include "G4Nsplit_Weight.hh"
40 #include "G4VTrackTerminator.hh"
41 #include <sstream>
42
43 G4SamplingPostStepAction::
44 G4SamplingPostStepAction(const G4VTrackTermina
45 : fTrackTerminator(TrackTerminator)
46 {
47 }
48
49 G4SamplingPostStepAction::~G4SamplingPostStepA
50 {
51 }
52
53 void G4SamplingPostStepAction::DoIt(const G4Tr
54 G4Pa
55 const G4Ns
56 {
57 // evaluate results from sampler
58 if (nw.fN>1)
59 {
60 // split track
61 Split(aTrack, nw, aParticleChange);
62 }
63 else if (nw.fN==1)
64 {
65 // don't split, but weight may be changed
66 aParticleChange->ProposeWeight(nw.fW);
67 }
68 else if (nw.fN==0)
69 {
70 // kill track
71 fTrackTerminator.KillTrack();
72 }
73 else
74 {
75 // wrong answer
76 std::ostringstream os;
77 os << "Sampler returned nw = "
78 << nw
79 << "\n";
80 G4String msg = os.str();
81
82 G4Exception("G4SamplingPostStepAction::DoI
83 "InvalidCondition", FatalExcep
84 }
85 }
86
87 void G4SamplingPostStepAction::Split(const G4T
88 const G4N
89 G4P
90 {
91 aParticleChange->ProposeWeight(nw.fW);
92 aParticleChange->SetNumberOfSecondaries(nw.f
93
94 for (G4int i=1;i<nw.fN;i++)
95 {
96 G4Track *ptrack = new G4Track(aTrack);
97
98 // ptrack->SetCreatorProcess(aTrack.Get
99 ptrack->SetWeight(nw.fW);
100
101 if (ptrack->GetMomentumDirection() != aTra
102 {
103 G4Exception("G4SamplingPostStepAction::S
104 FatalException, "Track with
105 }
106 aParticleChange->AddSecondary(ptrack);
107 }
108 return;
109 }
110