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73042f01 | 1 | #ifndef ALITPCTRACKER_H |
2 | #define ALITPCTRACKER_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | //------------------------------------------------------- | |
9 | // TPC tracker | |
10 | // | |
11 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
12 | //------------------------------------------------------- | |
b9de75e1 | 13 | #include "AliTracker.h" |
73042f01 | 14 | #include "AliTPCtrack.h" |
b9de75e1 | 15 | #include "AliTPCClustersArray.h" |
73042f01 | 16 | |
b9de75e1 | 17 | #include "AliTPCreco.h" |
73042f01 | 18 | |
19 | class TFile; | |
b9de75e1 | 20 | class AliTPCParam; |
73042f01 | 21 | |
b9de75e1 | 22 | class AliTPCtracker : public AliTracker { |
73042f01 | 23 | public: |
b9de75e1 | 24 | AliTPCtracker():AliTracker(),fkNIS(0),fkNOS(0) {} |
25 | AliTPCtracker(const AliTPCParam *par); | |
26 | ~AliTPCtracker(); | |
27 | ||
28 | Int_t ReadSeeds(const TFile *in); | |
29 | ||
30 | void LoadInnerSectors(); | |
31 | void UnloadInnerSectors(); | |
32 | void LoadOuterSectors(); | |
33 | void UnloadOuterSectors(); | |
73042f01 | 34 | |
b9de75e1 | 35 | AliCluster *GetCluster(Int_t index) const; |
36 | Int_t Clusters2Tracks(const TFile *in, TFile *out); | |
37 | Int_t PropagateBack(const TFile *in, TFile *out); | |
38 | ||
39 | virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const; | |
40 | ||
41 | public: | |
73042f01 | 42 | //**************** Internal tracker class ********************** |
43 | class AliTPCRow { | |
44 | public: | |
45 | AliTPCRow() {fN=0;} | |
46 | void InsertCluster(const AliTPCcluster *c, UInt_t index); | |
47 | operator int() const {return fN;} | |
48 | const AliTPCcluster* operator[](Int_t i) const {return fClusters[i];} | |
49 | UInt_t GetIndex(Int_t i) const {return fIndex[i];} | |
50 | Int_t Find(Double_t y) const; | |
b9de75e1 | 51 | void SetX(Double_t x) {fX=x;} |
52 | Double_t GetX() const {return fX;} | |
73042f01 | 53 | |
54 | private: | |
b9de75e1 | 55 | Int_t fN; //number of clusters |
56 | const AliTPCcluster *fClusters[kMaxClusterPerRow]; //pointers to clusters | |
57 | UInt_t fIndex[kMaxClusterPerRow]; //indeces of clusters | |
58 | Double_t fX; //X-coordinate of this row | |
73042f01 | 59 | |
60 | private: | |
61 | AliTPCRow(const AliTPCRow& r); //dummy copy constructor | |
62 | AliTPCRow &operator=(const AliTPCRow& r); //dummy assignment operator | |
63 | }; | |
64 | ||
65 | //**************** Internal tracker class ********************** | |
66 | class AliTPCSector { | |
67 | public: | |
68 | AliTPCSector() { fN=0; fRow = 0; } | |
b9de75e1 | 69 | ~AliTPCSector() { delete[] fRow; } |
73042f01 | 70 | AliTPCRow& operator[](Int_t i) const { return *(fRow+i); } |
71 | Int_t GetNRows() const { return fN; } | |
b9de75e1 | 72 | void Setup(const AliTPCParam *par, Int_t flag); |
73 | Double_t GetX(Int_t l) const {return fRow[l].GetX();} | |
74 | Double_t GetMaxY(Int_t l) const { | |
75 | return GetX(l)*TMath::Tan(0.5*GetAlpha()); | |
76 | } | |
77 | Double_t GetAlpha() const {return fAlpha;} | |
78 | Double_t GetAlphaShift() const {return fAlphaShift;} | |
79 | Int_t GetRowNumber(Double_t x) const { | |
80 | //return pad row number for this x | |
81 | Double_t r=fRow[fN-1].GetX(); | |
82 | if (x > r) return fN; | |
83 | r=fRow[0].GetX(); | |
84 | if (x < r) return -1; | |
85 | return Int_t((x-r)/fPadPitchLength + 0.5); | |
86 | } | |
87 | Double_t GetPadPitchWidth() const {return fPadPitchWidth;} | |
88 | Double_t GetPadPitchLength() const {return fPadPitchLength;} | |
89 | ||
90 | private: | |
91 | Int_t fN; //number of pad rows | |
73042f01 | 92 | AliTPCRow *fRow; //array of pad rows |
b9de75e1 | 93 | Double_t fAlpha; //opening angle |
94 | Double_t fAlphaShift; //shift angle; | |
95 | Double_t fPadPitchWidth; //pad pitch width | |
96 | Double_t fPadPitchLength; //pad pitch length | |
73042f01 | 97 | |
98 | private: | |
99 | AliTPCSector(const AliTPCSector &s); //dummy copy contructor | |
100 | AliTPCSector& operator=(const AliTPCSector &s);//dummy assignment operator | |
101 | }; | |
102 | ||
73042f01 | 103 | //**************** Internal tracker class ********************** |
104 | class AliTPCseed : public AliTPCtrack { | |
105 | public: | |
106 | AliTPCseed():AliTPCtrack(){} | |
b9de75e1 | 107 | AliTPCseed(const AliTPCtrack &t):AliTPCtrack(t){} |
108 | AliTPCseed(const AliKalmanTrack &t, Double_t a):AliTPCtrack(t,a){} | |
73042f01 | 109 | AliTPCseed(UInt_t index, const Double_t xx[5], |
110 | const Double_t cc[15], Double_t xr, Double_t alpha): | |
111 | AliTPCtrack(index, xx, cc, xr, alpha) {} | |
112 | void SetSampledEdx(Float_t q, Int_t i) { | |
be9c5115 | 113 | Double_t s=GetSnp(), t=GetTgl(); |
114 | q *= TMath::Sqrt((1-s*s)/(1+t*t)); | |
d4cf1daa | 115 | fdEdxSample[i]=q; |
73042f01 | 116 | } |
73042f01 | 117 | void CookdEdx(Double_t low=0.05, Double_t up=0.70); |
118 | ||
119 | private: | |
d4cf1daa | 120 | Float_t fdEdxSample[200]; //array of dE/dx samples |
73042f01 | 121 | }; |
122 | ||
123 | private: | |
b9de75e1 | 124 | void MakeSeeds(Int_t i1, Int_t i2); |
125 | Int_t FollowProlongation(AliTPCseed& t, Int_t rf=0); | |
126 | Int_t FollowBackProlongation(AliTPCseed &s, const AliTPCtrack &t); | |
127 | ||
128 | AliTPCtracker(const AliTPCtracker& r); //dummy copy constructor | |
129 | AliTPCtracker &operator=(const AliTPCtracker& r);//dummy assignment operator | |
130 | ||
131 | const Int_t fkNIS; //number of inner sectors | |
132 | AliTPCSector *fInnerSec; //array of inner sectors; | |
133 | const Int_t fkNOS; //number of outer sectors | |
134 | AliTPCSector *fOuterSec; //array of outer sectors; | |
73042f01 | 135 | |
b9de75e1 | 136 | Int_t fN; //number of loaded sectors |
137 | AliTPCSector *fSectors; //pointer to loaded sectors; | |
138 | ||
139 | AliTPCClustersArray fClustersArray; //array of TPC clusters | |
140 | TObjArray *fSeeds; //array of track seeds | |
141 | }; | |
73042f01 | 142 | |
143 | #endif | |
144 | ||
145 |