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3cde846d | 1 | // XEmacs -*-C++-*- |
a6c02c85 | 2 | // @(#) $Id$ |
4aa41877 | 3 | // Original: AliHLTTrack.h,v 1.18 2005/03/31 04:48:58 cvetan |
3cde846d | 4 | |
a6c02c85 | 5 | #ifndef ALIHLTTPCTRACK_H |
6 | #define ALIHLTTPCTRACK_H | |
7 | ||
3cde846d | 8 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
9 | * See cxx source for full Copyright notice */ | |
10 | ||
11 | /** @file AliHLTTPCTrack.h | |
4fdaad1e | 12 | @author Anders Vestbo, Uli Frankenfeld, maintained by Matthias Richter |
3cde846d | 13 | @date |
14 | @brief HLT TPC track base class (conformal mapping) | |
15 | */ | |
16 | ||
17 | #include "AliTPCtrack.h" | |
18 | ||
a6c02c85 | 19 | class AliHLTTPCVertex; |
20 | class AliHLTTPCSpacePointData; | |
21 | ||
3cde846d | 22 | /** |
23 | * @class AliHLTTPCTrack | |
24 | * This class implements the representation of a TPC track, used by the | |
25 | * HLT conformal mapping track finder. <br> | |
26 | * It was originally separated from the offline TPC track class, but in | |
27 | * order to adjust the output format to the offline ESD, AliHLTTPCTrack | |
28 | * now inherits from AliHLTtrack. | |
29 | */ | |
30 | class AliHLTTPCTrack : public AliTPCtrack { | |
a6c02c85 | 31 | |
32 | public: | |
33 | ||
34 | AliHLTTPCTrack(); | |
35 | virtual ~AliHLTTPCTrack(); | |
36 | ||
3cde846d | 37 | /** |
38 | * Copy track parameters. | |
39 | * @param track pointer to source track | |
40 | */ | |
41 | virtual void Copy(AliHLTTPCTrack* track); | |
42 | ||
43 | /** | |
44 | * Compare two tracks by the number of hits | |
45 | * @return 0 if equal number of hits, | |
46 | * 1 if this > track | |
47 | * -1 if this < track | |
48 | */ | |
a6c02c85 | 49 | virtual Int_t Compare(const AliHLTTPCTrack *track) const; |
3cde846d | 50 | |
51 | /** | |
52 | * Fit the assigned spacepoints to a helix. | |
53 | * The function sets teh track parameters. | |
54 | */ | |
a6c02c85 | 55 | virtual void CalculateHelix(); |
56 | ||
57 | Bool_t CalculateReferencePoint(Double_t angle,Double_t radius=132);//Calculate Reference Point | |
58 | Bool_t CalculateEdgePoint(Double_t angle);//Calculate crossing point with line | |
59 | Bool_t CalculatePoint(Double_t xplane); //Calculate crossing point with X-plane | |
60 | Bool_t IsPoint() {return fIsPoint;} | |
61 | Double_t GetCrossingAngle(Int_t padrow,Int_t slice=-1); | |
62 | Bool_t GetCrossingPoint(Int_t padrow,Float_t *xyz); | |
63 | Double_t GetDistance(Double_t /*x0*/,Double_t /*x1*/){return 0;} | |
64 | void UpdateToFirstPoint(); | |
65 | void GetClosestPoint(AliHLTTPCVertex *vertex,Double_t &closest_x,Double_t &closest_y,Double_t &closest_z); | |
66 | void Rotate(Int_t slice,Bool_t tolocal=kFALSE); | |
67 | Bool_t IsLocal() const {return fIsLocal;} | |
68 | void Print() const; | |
69 | ||
70 | // getter | |
71 | Double_t GetFirstPointX() const {return fFirstPoint[0];} | |
72 | Double_t GetFirstPointY() const {return fFirstPoint[1];} | |
73 | Double_t GetFirstPointZ() const {return fFirstPoint[2];} | |
74 | Double_t GetLastPointX() const {return fLastPoint[0];} | |
75 | Double_t GetLastPointY() const {return fLastPoint[1];} | |
76 | Double_t GetLastPointZ() const {return fLastPoint[2];} | |
77 | ||
78 | Double_t GetPointPsi() const {return fPointPsi;} | |
79 | Double_t GetPointX() const {return fPoint[0];} | |
80 | Double_t GetPointY() const {return fPoint[1];} | |
81 | Double_t GetPointZ() const {return fPoint[2];} | |
82 | ||
83 | Double_t GetPt() const {return fPt;} | |
84 | Double_t GetTgl() const {return fTanl;} | |
85 | Double_t GetPsi() const {return fPsi;} | |
86 | Double_t GetPhi0() const {return fPhi0;} | |
87 | Double_t GetR0() const {return fR0;} | |
88 | Double_t GetZ0() const {return fFirstPoint[2];} | |
89 | Float_t GetPID() const {return fPID;} | |
90 | ||
91 | Double_t GetPterr() const {return fPterr;} | |
92 | Double_t GetPsierr() const {return fPsierr;} | |
93 | Double_t GetTglerr() const {return fTanlerr;} | |
94 | ||
95 | Double_t GetKappa() const {return fKappa;} | |
96 | Double_t GetRadius() const {return fRadius;} | |
97 | Double_t GetCenterX() const {return fCenterX;} | |
98 | Double_t GetCenterY() const {return fCenterY;} | |
99 | ||
100 | Int_t GetNHits() const {return fNHits;} | |
101 | Int_t GetNumberOfPoints() const {return fNHits;} | |
102 | Bool_t ComesFromMainVertex() const {return fFromMainVertex;} | |
103 | ||
104 | Double_t GetPx() const {return fPt*cos(fPsi);} | |
105 | Double_t GetPy() const {return fPt*sin(fPsi);} | |
106 | Double_t GetPz() const {return fPt*fTanl;} | |
107 | ||
108 | Double_t GetP() const; | |
109 | Double_t GetPseudoRapidity() const; | |
110 | Double_t GetRapidity() const; | |
111 | ||
112 | Int_t GetCharge() const {return fQ;} | |
113 | Int_t GetMCid() const {return fMCid;} | |
114 | Double_t GetLength() const {return fLength;} | |
115 | ||
116 | Int_t GetFirstRow() const {return fRowRange[0];} | |
117 | Int_t GetLastRow() const {return fRowRange[1];} | |
118 | Int_t GetSector() const {return fSector;} | |
119 | ||
120 | UInt_t *GetHitNumbers() {return fHitNumbers;} | |
121 | ||
122 | // setter | |
123 | void SetPID(Float_t pid) {fPID=pid;} | |
124 | void SetMCid(Int_t f) {fMCid = f;} | |
125 | void SetFirstPoint(Double_t f,Double_t g,Double_t h) {fFirstPoint[0]=f; fFirstPoint[1]=g; fFirstPoint[2]=h;} | |
126 | void SetLastPoint(Double_t f,Double_t g,Double_t h) {fLastPoint[0]=f; fLastPoint[1]=g; fLastPoint[2]=h;} | |
127 | void SetHits(Int_t nhits,UInt_t *hits) {memcpy(fHitNumbers,hits,nhits*sizeof(UInt_t));} | |
128 | void SetPhi0(Double_t f) {fPhi0 = f;} | |
129 | void SetPsi(Double_t f) {fPsi = f;} | |
130 | void SetR0(Double_t f) {fR0 = f;} | |
131 | void SetTgl(Double_t f) {fTanl =f;} | |
132 | void SetZ0(Double_t f) {fFirstPoint[2] = f;} | |
133 | void SetPt(Double_t f) {fPt = f;} | |
134 | void SetLength(Double_t f) {fLength = f;} | |
135 | void SetPterr(Double_t f) {fPterr = f;} | |
136 | void SetPsierr(Double_t f) {fPsierr = f;} | |
137 | void SetZ0err(Double_t f) {fZ0err = f;} | |
138 | void SetTglerr(Double_t f) {fTanlerr = f;} | |
139 | void SetKappa(Double_t f) {fKappa = f;} | |
140 | void SetNHits(Int_t f) {fNHits = f;} | |
141 | void SetRowRange(Int_t f,Int_t g) {fRowRange[0]=f; fRowRange[1]=g;} | |
142 | void SetSector(Int_t f) {fSector = f;} | |
143 | void SetRadius(Double_t f) {fRadius = f;} | |
144 | void SetCenterX(Double_t f) {fCenterX = f;} | |
145 | void SetCenterY(Double_t f) {fCenterY = f;} | |
146 | void SetCharge(Int_t f) {fQ = f;} | |
147 | void ComesFromMainVertex(Bool_t f) {fFromMainVertex = f;} | |
148 | ||
3cde846d | 149 | /** |
150 | * Convert all track parameters to the format of AliKalmanTrack | |
151 | * The AliKalmanTrack class implements the track parametrization for offline ITS, TPC | |
152 | * and TRD tracking. The function calculates and sets the parameters of the | |
153 | * parent class (Note: AliHLTTPCTrack inherits from AliTPCtrack and thus | |
154 | * AliKalmanTrack). | |
155 | */ | |
156 | int Convert2AliKalmanTrack(); | |
157 | ||
a6c02c85 | 158 | private: |
159 | ||
160 | Int_t fNHits; //Number of hits | |
161 | Int_t fMCid; //Assigned id from MC data. | |
162 | ||
163 | Double_t fKappa; // Signed curvature (projected to a circle) | |
164 | Double_t fRadius; // Radius of the helix (projected to a circle) | |
165 | Double_t fCenterX; // x coordinate of the center of the helix (projected to a circle) | |
166 | Double_t fCenterY; // y coordinate of the center of the helix (projected to a circle) | |
167 | Bool_t fFromMainVertex; // true if tracks origin is the main vertex, otherwise false | |
168 | ||
169 | Int_t fRowRange[2]; //Subsector where this track was build | |
170 | Int_t fSector; //Sector # where this track was build | |
171 | ||
172 | //data from momentum fit | |
173 | Int_t fQ; //charge measured fit | |
174 | ||
175 | //track parameters: | |
176 | Double_t fTanl; //tan of dipangle | |
177 | Double_t fPsi; //azimuthal angle of the momentum | |
178 | Double_t fPt; //transverse momentum | |
179 | Double_t fLength; //length of track (s) | |
180 | ||
181 | Double_t fPterr; //error in pt | |
182 | Double_t fPsierr; //error in psi | |
183 | Double_t fZ0err; //error in first point | |
184 | Double_t fTanlerr; //error in tanl | |
185 | ||
186 | Double_t fPhi0; //azimuthal angle of the first point | |
187 | Double_t fR0; //radius of the first point | |
188 | Double_t fZ0; //z coordinate of the first point (fFirstPoint[2]) | |
189 | ||
190 | Double_t fFirstPoint[3]; //first point | |
191 | Double_t fLastPoint[3]; //last point | |
192 | Double_t fPoint[3]; //point | |
193 | Double_t fPointPsi; //azimuthal angle of the momentum at Point | |
194 | ||
195 | Bool_t fIsPoint; //Helix crosses the X-plane | |
196 | Bool_t fIsLocal; //Track given in local coordinates. | |
197 | ||
198 | Float_t fPID; //pid | |
199 | UInt_t fHitNumbers[159]; //Array of hit numbers for this track | |
200 | ||
201 | Bool_t IsPoint(Bool_t ispoint) {fIsPoint = ispoint;return fIsPoint;} | |
202 | ||
3cde846d | 203 | ClassDef(AliHLTTPCTrack,2) //Base track class |
a6c02c85 | 204 | }; |
205 | #endif |