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51ad6848 | 1 | #ifndef ALIEXTERNALTRACKPARAM_H |
2 | #define ALIEXTERNALTRACKPARAM_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 | #include "AliTrackParam.h" | |
10 | class AliKalmanTrack; | |
11 | ||
12 | class AliExternalTrackParam: public AliTrackParam { | |
13 | public: | |
14 | AliExternalTrackParam(); | |
15 | AliExternalTrackParam(Double_t x, Double_t alpha, | |
16 | const Double_t param[5], const Double_t covar[15]); | |
17 | AliExternalTrackParam(const AliKalmanTrack& track); | |
18 | ||
19 | virtual const Double_t* GetParameter() const; | |
20 | virtual const Double_t* GetCovariance() const; | |
21 | virtual Double_t X() const {return fX;}; | |
22 | virtual Double_t Alpha() const {return fAlpha;}; | |
23 | virtual AliExternalTrackParam* CreateExternalParam() const; | |
24 | virtual void ResetCovariance(Double_t factor = 10., | |
25 | Bool_t clearOffDiagonal = kTRUE); | |
26 | virtual Double_t Y() const {return fParam[0];}; | |
27 | virtual Double_t Z() const {return fParam[1];}; | |
28 | ||
29 | virtual Bool_t PropagateTo(Double_t x, Double_t* length = NULL); | |
30 | virtual Bool_t RotateTo(Double_t alpha); | |
31 | virtual Bool_t CorrectForMaterial(Double_t dAngle2, Double_t dPrel); | |
32 | virtual Bool_t GetProlongationAt(Double_t x, Double_t& y, | |
33 | Double_t& z) const; | |
34 | virtual Double_t GetXAtVertex(Double_t x = 0, Double_t y = 0) const; | |
35 | ||
36 | virtual Double_t GetPredictedChi2(const AliCluster* cluster); | |
37 | virtual Bool_t Update(const AliCluster* cluster); | |
38 | ||
39 | virtual Double_t SigmaPhi() const; | |
40 | virtual Double_t SigmaTheta() const; | |
41 | virtual Double_t SigmaPt() const; | |
42 | virtual TVector3 Momentum() const; | |
43 | virtual TVector3 Position() const; | |
44 | ||
45 | virtual void Print(Option_t* option = "") const; | |
46 | ||
47 | private: | |
48 | Double_t fX; // x coordinate for the parametrisation | |
49 | Double_t fAlpha; // azimuthal angle for the parametrisation | |
50 | Double_t fParam[5]; // track parameter (y, z, sin(azimuthal angel), tan(dip angle), 1/pt) | |
51 | Double_t fCovar[15]; // track parameter covariance | |
52 | ||
53 | ClassDef(AliExternalTrackParam, 1) | |
54 | }; | |
55 | ||
56 | #endif |