include/Geant4/G4CollisionComposite.hh

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //      GEANT4 Class file
0029 //
0030 //      For information related to this code contact:
0031 //
0032 //      File name:     G4CollisionComposite
0033 //
0034 //
0035 //      Creation date: 15 April 1999
0036 //
0037 //      Modifications:
0038 //
0039 // -------------------------------------------------------------------
0040
0041 #ifndef G4CollisionComposite_h
0042 #define G4CollisionComposite_h
0043
0044 #include "globals.hh"
0045 #include "G4HadronicException.hh"
0046 #include "G4VCollision.hh"
0047 #include "G4CollisionVector.hh"
0048 #include "G4KineticTrackVector.hh"
0049 #include "G4CrossSectionBuffer.hh"
0050 #include "G4Pair.hh"
0051 #include "G4ParticleTable.hh"
0052 #include "G4Threading.hh"
0053
0054 class G4KineticTrack;
0055 class G4VCrossSectionSource;
0056
0057 class G4CollisionComposite : public G4VCollision
0058 {
0059 public:
0060
0061   G4CollisionComposite();
0062   virtual ~G4CollisionComposite();
0063
0064   virtual G4double CrossSection(const G4KineticTrack& trk1,
0065                 const G4KineticTrack& trk2) const;
0066
0067   virtual G4KineticTrackVector* FinalState(const G4KineticTrack& trk1,
0068                           const G4KineticTrack& trk2) const;
0069
0070   virtual G4bool IsInCharge(const G4KineticTrack& trk1,
0071                 const G4KineticTrack& trk2) const;
0072   void AddComponent(G4VCollision * aC) {components.push_back(aC);}
0073
0074 public:
0075   virtual const G4VCrossSectionSource* GetCrossSectionSource() const { return 0; }
0076   virtual const G4VAngularDistribution* GetAngularDistribution() const { return 0; }
0077
0078   virtual const G4CollisionVector* GetComponents() const  { return &components;}
0079   struct Register
0080   {
0081     template <class T> void operator()(T*, G4CollisionComposite * aC)
0082     {
0083       aC->AddComponent(new T());
0084     }
0085   };
0086   struct Resolve
0087   {
0088 //     template <class t1, int t2, int t3, int t4, int t5>
0089     template <class T>
0090     void operator()(T * , G4CollisionComposite * aC)
0091     {
0092       G4ParticleDefinition * p2, *p3, *p4, *p5;
0093       G4int pdg = 0;
0094       pdg = T::i1;
0095       p2=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
0096       pdg = T::i2;
0097       p3=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
0098       pdg = T::i3;
0099       p4=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
0100       pdg = T::i4;
0101       p5=G4ParticleTable::GetParticleTable()->FindParticle(pdg);
0102       if(p2->GetPDGCharge()+p3->GetPDGCharge() != p4->GetPDGCharge()+p5->GetPDGCharge())
0103       {
0104         G4cerr << "charge-unbalance in collision composite"<<G4endl;
0105       }
0106       aC->AddComponent(new typename T::it(p2, p3, p4, p5));
0107     }
0108   };
0109
0110 private:
0111
0112   G4CollisionComposite(const G4CollisionComposite &right);
0113
0114   const G4CollisionComposite& operator=(const G4CollisionComposite &right);
0115   void BufferCrossSection(const G4ParticleDefinition * aP, const G4ParticleDefinition * bP);
0116   G4double BufferedCrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const;
0117
0118 private:
0119
0120   G4CollisionVector components;
0121   std::vector<G4CrossSectionBuffer> theBuffer;
0122
0123   static const G4int nPoints;
0124   static const G4double theT[];
0125
0126   mutable G4Mutex bufferMutex; //Protects concurrent access to theBuffer in MT
0127 };
0128
0129 #endif