1 #ifndef ALIHBTPOSITIONRANDOMIZER_H
2 #define ALIHBTPOSITIONRANDOMIZER_H
3 //___________________________________________________
4 ////////////////////////////////////////////////////////////////////////////////
6 // class AliHBTPositionRandomizer
8 // These class randomizes particle vertex positions
9 // Piotr.Skowronski@cern.ch
11 ////////////////////////////////////////////////////////////////////////////////
13 #include "AliReader.h"
17 class AliHBTPositionRandomizer: public AliReader
20 enum EModelTypes{kGausBall,kCylinder,kCylinderSurf,kEllipse};
21 AliHBTPositionRandomizer();
22 AliHBTPositionRandomizer(AliReader* reader);
23 AliHBTPositionRandomizer(const AliHBTPositionRandomizer& in);
25 virtual ~AliHBTPositionRandomizer();
27 AliHBTPositionRandomizer& operator=(const AliHBTPositionRandomizer& in);
29 Int_t Next(){return (fReader)?fReader->Next():1;}
30 void Rewind(){if(fReader) fReader->Rewind();}
32 Bool_t ReadsRec() const {return (fReader)?fReader->ReadsRec():kFALSE;}
33 Bool_t ReadsSim() const {return (fReader)?fReader->ReadsSim():kFALSE;}
35 AliAOD* GetEventSim() const ;
36 AliAOD* GetEventRec() const ;
38 AliAOD* GetEventSim(Int_t n);
39 AliAOD* GetEventRec(Int_t n){return (fReader)?fReader->GetEventRec(n):0x0;}
41 Int_t GetNumberOfSimEvents(){return (fReader)?fReader->GetNumberOfSimEvents():0;}
42 Int_t GetNumberOfRecEvents(){return (fReader)?fReader->GetNumberOfRecEvents():0;}
43 virtual TH1I* GetTrackCounter() const {return (fReader)?fReader->GetTrackCounter():0x0;}
44 virtual void WriteTrackCounter() const {if(fReader) fReader->WriteTrackCounter();}
46 void Randomize(AliAOD* event) const;
47 void SetEventVertex(Double_t x, Double_t y,Double_t z);
49 void SetRandomizer(Int_t pid,AliHBTRndm* rndm);
51 void SetGaussianBall(Int_t pid, Double_t r, Double_t meantime, Double_t sigmatime);
52 void SetGaussianBall(Int_t pid, Double_t rx, Double_t ry, Double_t rz, Double_t meantime, Double_t sigmatime);
53 void SetCyllinderSurface(Int_t pid, Double_t r, Double_t l);
54 void SetEllipse(Int_t pid, Double_t rmin, Double_t rmax);
56 void AddToPosition(Bool_t flag){fAddToExistingPos = flag;}
57 void RandomizeTracks(Bool_t flag){fRandomizeTracks = flag;}
59 AliHBTRndm* GetRandomizer(Int_t pdg) const;
60 Int_t GetRandomizerIndex(Int_t pdg) const;
63 void Randomize(Double_t& x,Double_t& y,Double_t&z,AliVAODParticle*p);
64 Int_t ReadNext(){return (fReader)?fReader->Next():1;}
67 AliReader* fReader; // Pointer to reader
68 AliHBTRndm* fDefaultRandomizer; // Pointer to class that performs randomization according to some model - default one
69 TObjArray* fRandomizers;//array with randomizers - each particle type can have different randomization parameters/model
70 Int_t fNPid;//number of randomizers defined in fPid and fRandomizers
71 Int_t* fPids;//[fgkNumberOfPids]
73 Bool_t fAddToExistingPos; //Determines if randomized position should be added to previous one, or overwrite old one
74 Bool_t fOnlyParticlesFromVertex; //Determines if randomization should be performed for particles from vertex
76 Bool_t fRandomizeTracks; //Determines if tracks should also be randimized
78 Double_t fVX; //vertex position
79 Double_t fVY; //vertex position
80 Double_t fVZ; //vertex position
82 static const Int_t fgkNumberOfPids;//size of fPid array
84 ClassDef(AliHBTPositionRandomizer,1)
87 /*********************************************************************/
88 /*********************************************************************/
89 /*********************************************************************/
91 class AliHBTRndm: public TObject
95 virtual ~AliHBTRndm(){}
96 virtual void Randomize(Double_t& x, Double_t& y, Double_t& z, Double_t& t, AliVAODParticle*p) const = 0;
97 ClassDef(AliHBTRndm,1)
100 /*********************************************************************/
101 /*********************************************************************/
102 /*********************************************************************/
104 class AliHBTRndmGaussBall: public AliHBTRndm
107 AliHBTRndmGaussBall();
108 AliHBTRndmGaussBall(Float_t r, Double_t meantime, Double_t sigmatime);
109 AliHBTRndmGaussBall(Float_t rx, Float_t ry, Float_t rz, Double_t meantime, Double_t sigmatime);
110 virtual ~AliHBTRndmGaussBall(){}
111 void Randomize(Double_t& x,Double_t& y,Double_t&z, Double_t& t, AliVAODParticle*/*particle*/) const;
113 Float_t fRx; //Dispertion in x
114 Float_t fRy; //Dispertion in y
115 Float_t fRz; //Dispertion in z
116 Float_t fTmean; //Mean emision time in t
117 Float_t fTsigma; //Dispertion in t
118 ClassDef(AliHBTRndmGaussBall,1)
121 /*********************************************************************/
122 /*********************************************************************/
123 /*********************************************************************/
125 class AliHBTRndmCyllSurf: public AliHBTRndm
128 AliHBTRndmCyllSurf():fR(0.0), fL(0){}
129 AliHBTRndmCyllSurf(Float_t r, Float_t l):fR(r),fL(l){}
130 virtual ~AliHBTRndmCyllSurf(){}
132 void Randomize(Double_t& x,Double_t& y,Double_t&z, Double_t& /*t*/t, AliVAODParticle* particle) const;
134 Float_t fR; //Redius of cylinder
135 Float_t fL; //Length of cylinder
137 ClassDef(AliHBTRndmCyllSurf,1)
140 /*********************************************************************/
141 /*********************************************************************/
142 /*********************************************************************/
144 class AliHBTRndmEllipse: public AliHBTRndm
147 AliHBTRndmEllipse():fRmin(0.),fRmax(0.){};
148 AliHBTRndmEllipse(Float_t rmin, Float_t rmax);
149 virtual ~AliHBTRndmEllipse(){}
151 void Randomize(Double_t& x,Double_t& y, Double_t& z, Double_t& , AliVAODParticle* particle) const;
153 Float_t fRmin; //Radius in x direction
154 Float_t fRmax; //Radius in y direction
156 ClassDef(AliHBTRndmEllipse,2)