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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 "AliTPCreco.h" |
bcc04e2a | 16 | #include "AliTPCcluster.h" |
73042f01 | 17 | |
18 | class TFile; | |
b9de75e1 | 19 | class AliTPCParam; |
bcc04e2a | 20 | class TObjArray; |
73042f01 | 21 | |
b9de75e1 | 22 | class AliTPCtracker : public AliTracker { |
73042f01 | 23 | public: |
e502c8c2 | 24 | AliTPCtracker():AliTracker(),fkNIS(0),fkNOS(0) { |
25 | fInnerSec=fOuterSec=0; fSeeds=0; | |
26 | } | |
bcc04e2a | 27 | AliTPCtracker(const AliTPCParam *par); |
b9de75e1 | 28 | ~AliTPCtracker(); |
29 | ||
30 | Int_t ReadSeeds(const TFile *in); | |
31 | ||
bcc04e2a | 32 | void LoadClusters(); |
33 | void UnloadClusters(); | |
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: | |
bcc04e2a | 45 | AliTPCRow() { |
46 | fN=0; | |
47 | fSize=kMaxClusterPerRow/8; | |
48 | fClusterArray=new AliTPCcluster[fSize]; | |
49 | } | |
50 | ~AliTPCRow() {delete[] fClusterArray;} | |
51 | void InsertCluster(const AliTPCcluster *c, Int_t sec, Int_t row); | |
52 | void ResetClusters() {fN=0;} | |
73042f01 | 53 | operator int() const {return fN;} |
bcc04e2a | 54 | const AliTPCcluster *operator[](Int_t i) const {return fClusters[i];} |
55 | const AliTPCcluster *GetUnsortedCluster(Int_t i) const { | |
56 | return fClusterArray+i; | |
57 | } | |
73042f01 | 58 | UInt_t GetIndex(Int_t i) const {return fIndex[i];} |
59 | Int_t Find(Double_t y) const; | |
b9de75e1 | 60 | void SetX(Double_t x) {fX=x;} |
61 | Double_t GetX() const {return fX;} | |
73042f01 | 62 | |
63 | private: | |
b9de75e1 | 64 | Int_t fN; //number of clusters |
65 | const AliTPCcluster *fClusters[kMaxClusterPerRow]; //pointers to clusters | |
bcc04e2a | 66 | Int_t fSize; //size of array of clusters |
67 | AliTPCcluster *fClusterArray; //array of clusters | |
b9de75e1 | 68 | UInt_t fIndex[kMaxClusterPerRow]; //indeces of clusters |
69 | Double_t fX; //X-coordinate of this row | |
73042f01 | 70 | |
71 | private: | |
72 | AliTPCRow(const AliTPCRow& r); //dummy copy constructor | |
73 | AliTPCRow &operator=(const AliTPCRow& r); //dummy assignment operator | |
74 | }; | |
75 | ||
76 | //**************** Internal tracker class ********************** | |
77 | class AliTPCSector { | |
78 | public: | |
79 | AliTPCSector() { fN=0; fRow = 0; } | |
b9de75e1 | 80 | ~AliTPCSector() { delete[] fRow; } |
73042f01 | 81 | AliTPCRow& operator[](Int_t i) const { return *(fRow+i); } |
82 | Int_t GetNRows() const { return fN; } | |
b9de75e1 | 83 | void Setup(const AliTPCParam *par, Int_t flag); |
84 | Double_t GetX(Int_t l) const {return fRow[l].GetX();} | |
85 | Double_t GetMaxY(Int_t l) const { | |
86 | return GetX(l)*TMath::Tan(0.5*GetAlpha()); | |
87 | } | |
88 | Double_t GetAlpha() const {return fAlpha;} | |
89 | Double_t GetAlphaShift() const {return fAlphaShift;} | |
90 | Int_t GetRowNumber(Double_t x) const { | |
91 | //return pad row number for this x | |
f03e3423 | 92 | Double_t r; |
b46635a4 | 93 | if (fN < 64){ |
f03e3423 | 94 | r=fRow[fN-1].GetX(); |
95 | if (x > r) return fN; | |
96 | r=fRow[0].GetX(); | |
97 | if (x < r) return -1; | |
29fe0389 | 98 | return Int_t((x-r)/f1PadPitchLength + 0.5);} |
f03e3423 | 99 | else{ |
100 | r=fRow[fN-1].GetX(); | |
101 | if (x > r) return fN; | |
102 | r=fRow[0].GetX(); | |
103 | if (x < r) return -1; | |
104 | Double_t r1=fRow[64].GetX(); | |
105 | if(x<r1){ | |
106 | return Int_t((x-r)/f1PadPitchLength + 0.5);} | |
107 | else{ | |
108 | return (Int_t((x-r1)/f2PadPitchLength + 0.5)+64);} | |
109 | } | |
b9de75e1 | 110 | } |
111 | Double_t GetPadPitchWidth() const {return fPadPitchWidth;} | |
b9de75e1 | 112 | |
113 | private: | |
114 | Int_t fN; //number of pad rows | |
73042f01 | 115 | AliTPCRow *fRow; //array of pad rows |
b9de75e1 | 116 | Double_t fAlpha; //opening angle |
117 | Double_t fAlphaShift; //shift angle; | |
118 | Double_t fPadPitchWidth; //pad pitch width | |
bcc04e2a | 119 | Double_t f1PadPitchLength; //pad pitch length |
120 | Double_t f2PadPitchLength; //pad pitch length | |
73042f01 | 121 | private: |
122 | AliTPCSector(const AliTPCSector &s); //dummy copy contructor | |
123 | AliTPCSector& operator=(const AliTPCSector &s);//dummy assignment operator | |
124 | }; | |
125 | ||
73042f01 | 126 | //**************** Internal tracker class ********************** |
127 | class AliTPCseed : public AliTPCtrack { | |
128 | public: | |
129 | AliTPCseed():AliTPCtrack(){} | |
b9de75e1 | 130 | AliTPCseed(const AliTPCtrack &t):AliTPCtrack(t){} |
131 | AliTPCseed(const AliKalmanTrack &t, Double_t a):AliTPCtrack(t,a){} | |
73042f01 | 132 | AliTPCseed(UInt_t index, const Double_t xx[5], |
133 | const Double_t cc[15], Double_t xr, Double_t alpha): | |
134 | AliTPCtrack(index, xx, cc, xr, alpha) {} | |
135 | void SetSampledEdx(Float_t q, Int_t i) { | |
be9c5115 | 136 | Double_t s=GetSnp(), t=GetTgl(); |
137 | q *= TMath::Sqrt((1-s*s)/(1+t*t)); | |
d4cf1daa | 138 | fdEdxSample[i]=q; |
73042f01 | 139 | } |
73042f01 | 140 | void CookdEdx(Double_t low=0.05, Double_t up=0.70); |
141 | ||
142 | private: | |
d4cf1daa | 143 | Float_t fdEdxSample[200]; //array of dE/dx samples |
73042f01 | 144 | }; |
145 | ||
146 | private: | |
b9de75e1 | 147 | void MakeSeeds(Int_t i1, Int_t i2); |
148 | Int_t FollowProlongation(AliTPCseed& t, Int_t rf=0); | |
149 | Int_t FollowBackProlongation(AliTPCseed &s, const AliTPCtrack &t); | |
150 | ||
151 | AliTPCtracker(const AliTPCtracker& r); //dummy copy constructor | |
152 | AliTPCtracker &operator=(const AliTPCtracker& r);//dummy assignment operator | |
153 | ||
154 | const Int_t fkNIS; //number of inner sectors | |
bcc04e2a | 155 | AliTPCSector *fInnerSec; //array of inner sectors |
b9de75e1 | 156 | const Int_t fkNOS; //number of outer sectors |
bcc04e2a | 157 | AliTPCSector *fOuterSec; //array of outer sectors |
73042f01 | 158 | |
bcc04e2a | 159 | Int_t fN; //number of "active" sectors |
160 | AliTPCSector *fSectors; //pointer to "active" sectors; | |
b9de75e1 | 161 | |
bcc04e2a | 162 | TObjArray *fSeeds; //array of track seeds |
b9de75e1 | 163 | }; |
73042f01 | 164 | |
165 | #endif | |
166 | ||
167 |