1 #ifndef ALITPCTRANSFORMATION_H
2 #define ALITPCTRANSFORMATION_H
8 class TTreeSRedirector;
9 class AliTrackPointArray;
15 class AliTPCTransformation: public TNamed{
17 typedef Double_t (*GenFuncG)(const Double_t*,const Double_t*);
18 AliTPCTransformation();
19 AliTPCTransformation(const char *name,TBits *mask, const char *fx, const char *fy, const char *fz, Int_t coord);
20 AliTPCTransformation(const AliTPCTransformation&trafo);
21 ~AliTPCTransformation();
23 virtual Double_t GetDeltaXYZ(Int_t coord, Int_t volID, Double_t param, Double_t x, Double_t y, Double_t z);
24 void SetParams(Double_t param, Double_t sigma, Double_t sigma2Time, TVectorD* fixedParams);
26 void SetActive(Bool_t flag){ fIsActive = flag;}
27 Bool_t IsActive(){return fIsActive;}
30 static TBits * BitsSide(Bool_t aside);
31 static TBits * BitsAll();
32 static void RegisterFormula(const char * name, GenFuncG formula);
33 static AliTPCTransformation::GenFuncG FindFormula(const char * name);
34 static Double_t Eval(const char * name, const Double_t*x,const Double_t*par);
37 TString * fNameX; // x formula
38 TString * fNameY; // y formula
39 TString * fNameZ; // z formula
41 TBits * fBitMask; // bitmaps - transformation only for specified volID
42 Int_t fCoordSystem; // coord system of output deltas
43 Double_t fParam; // free parameter of transformation
44 Double_t fSigma; // error of the parameter
45 Double_t fSigma2Time; // change of the error in time (per hour) - (For kalman filter)
46 TVectorD *fFixedParam; // fixed parameters of tranformation
47 Bool_t fIsActive; // switch - is transformation active
49 // predefined formulas
51 static Int_t BuildBasicFormulas(); //build list of basic formulas
52 static Double_t TPCscalingRPol(Double_t *xyz, Double_t * param);
53 static Double_t TPCscalingZDr(Double_t *xyz, Double_t * param);
54 static Double_t TPCscalingPhiLocal(Double_t *xyz, Double_t * param);
56 // TPC Field cage + ROC misalingment induced distortion
58 static Double_t TPCscalingRIFC(Double_t *xyz, Double_t * param); // inner field cage r distorion
59 static Double_t TPCscalingROFC(Double_t *xyz, Double_t * param); // outer field cage r distorion
61 // TPC local misalignment
63 static Double_t TPClocaldLxdGX(Double_t *xyz, Double_t * param);
64 static Double_t TPClocaldLxdGY(Double_t *xyz, Double_t * param);
65 static Double_t TPClocaldLydGX(Double_t *xyz, Double_t * param);
66 static Double_t TPClocaldLydGY(Double_t *xyz, Double_t * param);
68 // TPC quadrant misalignment
70 // static Double_t TPCQuadrantDr(Double_t *xyz, Double_t * param){return 0;}
71 //static Double_t TPCQuadrantDrphi(Double_t *xyz, Double_t * param){return 0;}
75 static Double_t TPCDeltaZ(Double_t *xyz, Double_t * param);
76 static Double_t TPCDeltaZMediumLong(Double_t *xyz, Double_t * param);
77 static Double_t TPCTiltingZ(Double_t *xyz, Double_t * param);
79 Bool_t fInit; // initialization flag
80 GenFuncG fFormulaX; //! x formula
81 GenFuncG fFormulaY; //! y formula
82 GenFuncG fFormulaZ; //! z formula
83 static GenFuncG fgFormulas[10000]; //! array of pointers to formula
84 static TObjArray* fgFormulasName; //! array of formalas name
86 AliTPCTransformation &operator=(const AliTPCTransformation&); // not implemented
88 ClassDef(AliTPCTransformation,1);