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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
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17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
27 // 27 //
28 // ------------------------------------------- 28 // ----------------------------------------------------------------------
29 // GEANT 4 class source file 29 // GEANT 4 class source file
30 // 30 //
31 // G4SamplingPostStepAction.cc 31 // G4SamplingPostStepAction.cc
32 // 32 //
33 // ------------------------------------------- 33 // ----------------------------------------------------------------------
34 34
35 #include "G4SamplingPostStepAction.hh" 35 #include "G4SamplingPostStepAction.hh"
36 #include "G4Track.hh" 36 #include "G4Track.hh"
37 #include "G4ParticleChange.hh" 37 #include "G4ParticleChange.hh"
38 #include "G4VImportanceSplitExaminer.hh" 38 #include "G4VImportanceSplitExaminer.hh"
39 #include "G4Nsplit_Weight.hh" 39 #include "G4Nsplit_Weight.hh"
40 #include "G4VTrackTerminator.hh" 40 #include "G4VTrackTerminator.hh"
41 #include <sstream> 41 #include <sstream>
42 42
43 G4SamplingPostStepAction:: 43 G4SamplingPostStepAction::
44 G4SamplingPostStepAction(const G4VTrackTermina 44 G4SamplingPostStepAction(const G4VTrackTerminator &TrackTerminator)
45 : fTrackTerminator(TrackTerminator) 45 : fTrackTerminator(TrackTerminator)
46 { 46 {
47 } 47 }
48 48
49 G4SamplingPostStepAction::~G4SamplingPostStepA 49 G4SamplingPostStepAction::~G4SamplingPostStepAction()
50 { 50 {
51 } 51 }
52 52
53 void G4SamplingPostStepAction::DoIt(const G4Tr 53 void G4SamplingPostStepAction::DoIt(const G4Track& aTrack,
54 G4Pa 54 G4ParticleChange *aParticleChange,
55 const G4Ns 55 const G4Nsplit_Weight &nw)
56 { 56 {
57 // evaluate results from sampler 57 // evaluate results from sampler
58 if (nw.fN>1) 58 if (nw.fN>1)
59 { 59 {
60 // split track 60 // split track
61 Split(aTrack, nw, aParticleChange); 61 Split(aTrack, nw, aParticleChange);
62 } 62 }
63 else if (nw.fN==1) 63 else if (nw.fN==1)
64 { 64 {
65 // don't split, but weight may be changed 65 // don't split, but weight may be changed !
66 aParticleChange->ProposeWeight(nw.fW); 66 aParticleChange->ProposeWeight(nw.fW);
67 } 67 }
68 else if (nw.fN==0) 68 else if (nw.fN==0)
69 { 69 {
70 // kill track 70 // kill track
71 fTrackTerminator.KillTrack(); 71 fTrackTerminator.KillTrack();
72 } 72 }
73 else 73 else
74 { 74 {
75 // wrong answer 75 // wrong answer
76 std::ostringstream os; 76 std::ostringstream os;
77 os << "Sampler returned nw = " 77 os << "Sampler returned nw = "
78 << nw 78 << nw
79 << "\n"; 79 << "\n";
80 G4String msg = os.str(); 80 G4String msg = os.str();
81 81
82 G4Exception("G4SamplingPostStepAction::DoI 82 G4Exception("G4SamplingPostStepAction::DoIt()",
83 "InvalidCondition", FatalExcep 83 "InvalidCondition", FatalException, msg);
84 } 84 }
85 } 85 }
86 86
87 void G4SamplingPostStepAction::Split(const G4T 87 void G4SamplingPostStepAction::Split(const G4Track &aTrack,
88 const G4N 88 const G4Nsplit_Weight &nw,
89 G4P 89 G4ParticleChange *aParticleChange)
90 { 90 {
91 aParticleChange->ProposeWeight(nw.fW); 91 aParticleChange->ProposeWeight(nw.fW);
92 aParticleChange->SetNumberOfSecondaries(nw.f 92 aParticleChange->SetNumberOfSecondaries(nw.fN-1);
93 93
94 for (G4int i=1;i<nw.fN;i++) 94 for (G4int i=1;i<nw.fN;i++)
95 { 95 {
96 G4Track *ptrack = new G4Track(aTrack); 96 G4Track *ptrack = new G4Track(aTrack);
97 97
98 // ptrack->SetCreatorProcess(aTrack.Get 98 // ptrack->SetCreatorProcess(aTrack.GetCreatorProcess());
99 ptrack->SetWeight(nw.fW); 99 ptrack->SetWeight(nw.fW);
100 100
101 if (ptrack->GetMomentumDirection() != aTra 101 if (ptrack->GetMomentumDirection() != aTrack.GetMomentumDirection())
102 { 102 {
103 G4Exception("G4SamplingPostStepAction::S 103 G4Exception("G4SamplingPostStepAction::Split()", "InvalidCondition",
104 FatalException, "Track with 104 FatalException, "Track with same momentum !");
105 } 105 }
106 aParticleChange->AddSecondary(ptrack); 106 aParticleChange->AddSecondary(ptrack);
107 } 107 }
108 return; 108 return;
109 } 109 }
110 110