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1f30d65c | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | // | |
15d37333 | 16 | // Static function member which can be used in standalone cases |
17 | // especially as utils for AliTPCCosmicTrackfit | |
18 | // | |
19 | // detailed description can be found inside individual function | |
1f30d65c | 20 | // |
21 | // grep "exitreport" in output log to check abnormal termination | |
22 | // | |
15d37333 | 23 | // Xianguo Lu |
24 | // lu@physi.uni-heidelberg.de | |
25 | // Xianguo.Lu@cern.ch | |
1f30d65c | 26 | // |
27 | ||
28 | #ifndef ALITPCCOSMICUTILS_H | |
29 | #define ALITPCCOSMICUTILS_H | |
30 | ||
31 | class AliTPCCosmicUtils | |
32 | { | |
33 | public: | |
34 | static AliTPCseed * GetTPCseed(const AliESDtrack *esdtrack); | |
35 | ||
36 | static AliExternalTrackParam *MakeSeed(const AliTPCseed *tseed); | |
37 | ||
15d37333 | 38 | static void SingleFit(AliExternalTrackParam * trackInOld, AliExternalTrackParam * trackOutOld, const AliTPCseed *tseed, const Bool_t kinward, const Int_t rowstartshift, const Int_t rowstep, const Double_t xmin, const Double_t xmax, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, Double_t &lfit, TTreeSRedirector *debugstreamer=0x0); |
1f30d65c | 39 | |
15d37333 | 40 | static void CombinedFit(AliExternalTrackParam *trackPars[], const AliTPCseed *seeds[], const Int_t rowstartshift, const Int_t rowstep, const Double_t xmin, const Double_t xmax, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, Double_t &lfit, Double_t &lfit, Double_t &vtxD, TTreeSRedirector *debugstreamer=0x0); |
1f30d65c | 41 | |
15d37333 | 42 | static void DrawTracks(AliESDtrack *esdtrks[], const TString tag, const TString outputformat="png"); |
1f30d65c | 43 | static void DrawSeeds(const AliTPCseed * seeds[], const TString tag, const TString outputformat="png"); |
44 | static void PrintTrackParam(const Int_t id, const AliExternalTrackParam * trackpar, const char *tag=""); | |
15d37333 | 45 | static Bool_t RotateSafe(AliExternalTrackParam *trackPar, const Double_t aa); |
46 | static Double_t AngleInRange(Double_t phi); | |
47 | static Double_t Point2LineDist(const TVector3 p0, const TVector3 l1, const TVector3 l2); | |
1f30d65c | 48 | |
49 | private: | |
50 | static void IniCov(AliExternalTrackParam *trackPar, const Double_t ncl); | |
15d37333 | 51 | static void SubCombined(AliExternalTrackParam *trackPar, const AliTPCseed *seeds[], const Int_t tk0, const Int_t tk1, const Int_t rowstartshift, const Int_t rowstep, const Double_t xmin, const Double_t xmax, const Double_t eloss, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, Double_t &lfit, Double_t &lfit, Double_t &vtxD, TTreeSRedirector *debugstreamer=0x0); |
52 | static void FitKernel(AliExternalTrackParam *trackPar, const AliTPCseed *tseed, const Int_t rowstart, const Int_t rowstop, const Int_t drow, const Double_t xmin, const Double_t xmax, const Double_t eloss, Int_t &ksite, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TVector3 &gposStart, TVector3 &gposStop, TTreeSRedirector *debugstreamer, const Bool_t kinicov); | |
1f30d65c | 53 | |
54 | static const Int_t fgkNRow = 159; //number of pad rows | |
55 | static const Int_t fgkNclsMin = 40; //minimum requirement of number of TPC cluster | |
56 | static const Int_t fgkXMin = 80; //minimum x (tracking system) to use in propagation | |
57 | static const Double_t fgkMass = 0.105658; //muon mass | |
58 | static const Int_t fgkNiter = 2; //number of iteration in SingleFit and CombinedFit, 1 is not enough, 3 is the same as 2 | |
59 | }; | |
60 | ||
61 | #endif |