1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 // Static function member which can be used in standalone cases
17 // especially as utils for AliTPCCosmicTrackfit
19 // detailed description can be found inside individual function
21 // grep "exitreport" in output log to check abnormal termination
24 // lu@physi.uni-heidelberg.de
28 #ifndef ALITPCCOSMICUTILS_H
29 #define ALITPCCOSMICUTILS_H
35 class AliTPCCosmicUtils
47 static Double_t GetMinPhi(const AliExternalTrackParam *params[]);
48 static Int_t GetBField(const AliESDEvent *esd);
49 static Int_t GetTrigger(const AliESDEvent *esd);
50 static AliTPCseed * GetTPCseed(const AliESDtrack *esdtrack);
51 static Bool_t GetESD(AliESDEvent *& esdevent, AliESDfriend *& esdfriend);
52 //===========================
54 static AliExternalTrackParam *MakeSeed(const AliTPCseed *tseed);
56 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);
58 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 &vtxD, Double_t &vtxZ, TTreeSRedirector *debugstreamer=0x0);
60 static void DrawTracks(AliESDtrack *esdtrks[], const TString tag, const TString outputformat="png");
61 static void DrawSeeds(const AliTPCseed * seeds[], const TString tag, const TString outputformat="png");
62 static void PrintTrackParam(const Int_t id, const AliExternalTrackParam * trackpar, const char *tag="");
63 static Bool_t RotateSafe(AliExternalTrackParam *trackPar, const Double_t aa);
64 static Double_t AngleInRange(Double_t phi);
65 static Double_t Point2LineDist(const TVector3 p0, const TVector3 l1, const TVector3 l2, TVector3 *vtx = 0x0);
67 static Int_t NRow(){ return 159;} //number of pad rows
68 static Int_t NclsMin(){ return 40;} //minimum requirement of number of TPC cluster
69 static Double_t Mass(){ return 0.105658;} //muon mass
71 //---------------------------
75 static Int_t XMin(){ return 80;} //minimum x (tracking system) to use in propagation
76 static Int_t Niter(){ return 2;} //number of iteration in SingleFit and CombinedFit, 1 is not enough, 3 is the same as 2
78 static void IniCov(AliExternalTrackParam *trackPar, const Double_t ncl);
79 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 &vtxD, Double_t &vtxZ, TTreeSRedirector *debugstreamer=0x0);
81 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);