ITS/AliITSClusterParam.h

   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>
  16 //#include "AliITSRecPoint.h"
  17
  18 class AliITSRecPoint;
  19
  20 //_____________________________________________________________________________
  21 class AliITSClusterParam : public TObject {
  22  public:
  23   static AliITSClusterParam* Instance();
  24   virtual           ~AliITSClusterParam(){;}
  25   virtual void  Print(Option_t* option = "") const;
  26   void SetInstance(AliITSClusterParam *param){fgInstance = param;}
  27   static void GetNTeor(Int_t layer,const AliITSRecPoint* cl,
  28                        Float_t tgl,Float_t tgphitr,
  29                        Float_t &ny,Float_t &nz);
  30   static Int_t GetError(Int_t layer,const AliITSRecPoint*cl,
  31                         Float_t tgl,Float_t tgphitr,Float_t expQ,
  32                         Float_t &erry,Float_t &errz,Float_t &covyz,
  33                         Bool_t addMisalErr=kTRUE);
  34   static Int_t GetError(Int_t layer,const AliITSRecPoint*cl,
  35                         Float_t tgl,Float_t tgphitr,Float_t expQ,
  36                         Float_t &erry,Float_t &errz,
  37                         Bool_t addMisalErr=kTRUE) {
  38                                   Float_t covyz;
  39     return GetError(layer,cl,tgl,tgphitr,expQ,erry,errz,covyz,addMisalErr);
  40   }
  41
  42   //void FitData(TTree * tree);
  43   //
  44  private:
  45   AliITSClusterParam(){}
  46   AliITSClusterParam(const AliITSClusterParam &source); // copy constructor. Not to be used!
  47   AliITSClusterParam& operator=(const AliITSClusterParam &source); // = operator. Not to be used!
  48   static AliITSClusterParam*   fgInstance; //! Instance of this class (singleton implementation)
  49   static Int_t GetErrorOrigRecPoint(const AliITSRecPoint*cl,
  50                                     Float_t &erry,Float_t &errz,Float_t &covyz);
  51   static Int_t GetErrorParamMI(Int_t layer,const AliITSRecPoint*cl,
  52                                Float_t tgl,Float_t tgphitr,Float_t expQ,
  53                                Float_t &erry,Float_t &errz);
  54   static Int_t GetErrorParamAngle(Int_t layer,const AliITSRecPoint*cl,
  55                                   Float_t tgl,Float_t tgphitr,
  56                                   Float_t &erry,Float_t &errz);
  57   static Int_t GetErrorParamAngleOld(Int_t layer,const AliITSRecPoint*cl,
  58                                   Float_t tgl,Float_t tgphitr,
  59                                   Float_t &erry,Float_t &errz);
  60
  61   ClassDef(AliITSClusterParam,1)    //  ITS cluster parametrization class
  62 };
  63
  64 #endif