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27 // -------------------------------------------------------------------
28 // GEANT4 Class file
29 //
30 // For information related to this code contact:
31 //
32 // File name: G4CollisionComposite
33 //
34 //
35 // Creation date: 15 April 1999
36 //
37 // Modifications:
38 //
39 // -------------------------------------------------------------------
40
41 #ifndef G4CollisionComposite_h
42 #define G4CollisionComposite_h
43
44 #include "globals.hh"
45 #include "G4HadronicException.hh"
46 #include "G4VCollision.hh"
47 #include "G4CollisionVector.hh"
48 #include "G4KineticTrackVector.hh"
49 #include "G4CrossSectionBuffer.hh"
50 #include "G4Pair.hh"
51 #include "G4ParticleTable.hh"
52 #include "G4Threading.hh"
53
54 class G4KineticTrack;
55 class G4VCrossSectionSource;
56
57 class G4CollisionComposite : public G4VCollision
58 {
59 public:
60
61 G4CollisionComposite();
62 virtual ~G4CollisionComposite();
63
64 virtual G4double CrossSection(const G4KineticTrack& trk1,
65 const G4KineticTrack& trk2) const;
66
67 virtual G4KineticTrackVector* FinalState(const G4KineticTrack& trk1,
68 const G4KineticTrack& trk2) const;
69
70 virtual G4bool IsInCharge(const G4KineticTrack& trk1,
71 const G4KineticTrack& trk2) const;
72 void AddComponent(G4VCollision * aC) {components.push_back(aC);}
73
74 public:
75 virtual const G4VCrossSectionSource* GetCrossSectionSource() const { return 0; }
76 virtual const G4VAngularDistribution* GetAngularDistribution() const { return 0; }
77
78 virtual const G4CollisionVector* GetComponents() const { return &components;}
79 struct Register
80 {
81 template <class T> void operator()(T*, G4CollisionComposite * aC)
82 {
83 aC->AddComponent(new T());
84 }
85 };
86 struct Resolve
87 {
88 // template <class t1, int t2, int t3, int t4, int t5>
89 template <class T>
90 void operator()(T * , G4CollisionComposite * aC)
91 {
92 G4ParticleDefinition * p2, *p3, *p4, *p5;
93 G4int pdg = 0;
94 pdg = T::i1;
95 p2=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
96 pdg = T::i2;
97 p3=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
98 pdg = T::i3;
99 p4=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
100 pdg = T::i4;
101 p5=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
102 if(p2->GetPDGCharge()+p3->GetPDGCharge() != p4->GetPDGCharge()+p5->GetPDGCharge())
103 {
104 G4cerr << "charge-unbalance in collision composite"<<G4endl;
105 }
106 aC->AddComponent(new typename T::it(p2, p3, p4, p5));
107 }
108 };
109
110 private:
111
112 G4CollisionComposite(const G4CollisionComposite &right);
113
114 const G4CollisionComposite& operator=(const G4CollisionComposite &right);
115 void BufferCrossSection(const G4ParticleDefinition * aP, const G4ParticleDefinition * bP);
116 G4double BufferedCrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const;
117
118 private:
119
120 G4CollisionVector components;
121 std::vector<G4CrossSectionBuffer> theBuffer;
122
123 static const G4int nPoints;
124 static const G4double theT[];
125
126 mutable G4Mutex bufferMutex; //Protects concurrent access to theBuffer in MT
127 };
128
129 #endif
130