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[u/mrichter/AliRoot.git] / ITS / AliITSClusterParam.h
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572f41f9 1#ifndef ALIITSCLUSTERPARAM_H
2#define ALIITSCLUSTERPARAM_H
3/* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8////////////////////////////////////////////////////
9// //
10// ITS cluster error and shape parameterization //
11// andrea.dainese@lnl.infn.it //
12////////////////////////////////////////////////////
13
14
15#include <TObject.h>
5c6a2470 16//#include "AliITSRecPoint.h"
572f41f9 17
5c6a2470 18class AliITSRecPoint;
572f41f9 19
20//_____________________________________________________________________________
21class AliITSClusterParam : public TObject {
22 public:
23 static AliITSClusterParam* Instance();
24 AliITSClusterParam(){}
25 virtual ~AliITSClusterParam(){;}
26 virtual void Print(Option_t* option = "") const;
27 void SetInstance(AliITSClusterParam *param){fgInstance = param;}
28 static void GetNTeor(Int_t layer,const AliITSRecPoint* cl,
e50912db 29 Float_t tgl,Float_t tgphitr,
30 Float_t &ny,Float_t &nz);
572f41f9 31 static Int_t GetError(Int_t layer,const AliITSRecPoint*cl,
e50912db 32 Float_t tgl,Float_t tgphitr,Float_t expQ,
d9ead1a0 33 Float_t &erry,Float_t &errz,Float_t &covyz,
8c139cf3 34 Bool_t addMisalErr=kTRUE);
d9ead1a0 35 static Int_t GetError(Int_t layer,const AliITSRecPoint*cl,
36 Float_t tgl,Float_t tgphitr,Float_t expQ,
37 Float_t &erry,Float_t &errz,
38 Bool_t addMisalErr=kTRUE) {
39 Float_t covyz;
40 return GetError(layer,cl,tgl,tgphitr,expQ,erry,errz,covyz,addMisalErr);
41 }
572f41f9 42
43 //void FitData(TTree * tree);
44 //
45 protected:
46 static AliITSClusterParam* fgInstance; //! Instance of this class (singleton implementation)
e50912db 47 static Int_t GetErrorOrigRecPoint(const AliITSRecPoint*cl,
d9ead1a0 48 Float_t &erry,Float_t &errz,Float_t &covyz);
e50912db 49 static Int_t GetErrorParamMI(Int_t layer,const AliITSRecPoint*cl,
50 Float_t tgl,Float_t tgphitr,Float_t expQ,
51 Float_t &erry,Float_t &errz);
52 static Int_t GetErrorParamAngle(Int_t layer,const AliITSRecPoint*cl,
53 Float_t tgl,Float_t tgphitr,
54 Float_t &erry,Float_t &errz);
12cc92e0 55 static Int_t GetErrorParamAngleOld(Int_t layer,const AliITSRecPoint*cl,
56 Float_t tgl,Float_t tgphitr,
57 Float_t &erry,Float_t &errz);
e50912db 58
572f41f9 59 ClassDef(AliITSClusterParam,1) // ITS cluster parametrization class
60};
61
62#endif