Line data Source code
1 : #ifndef AliHMPIDReconHTA_h
2 : #define AliHMPIDReconHTA_h
3 :
4 : /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 : * See cxx source for full Copyright notice */
6 :
7 : //////////////////////////////////////////////////////////////////////////
8 : // //
9 : // AliHMPIDReconHTA //
10 : // //
11 : // HMPID class to perfom pattern recognition based on Hough transfrom //
12 : // //
13 : //////////////////////////////////////////////////////////////////////////
14 :
15 :
16 : #include <TNamed.h> //base class
17 :
18 : class TClonesArray; //CkovAngle()
19 : class AliESDtrack; //CkovAngle()
20 : class AliHMPIDParam;//General pourpose
21 :
22 : class AliHMPIDReconHTA : public TNamed
23 : {
24 : public :
25 : AliHMPIDReconHTA();
26 : virtual ~AliHMPIDReconHTA();
27 :
28 : // HTA hidden track algorithm
29 : void InitVars (Int_t n); //init space for variables
30 : void DeleteVars ()const; //delete variables
31 : void InitDatabase (); //initialization of database
32 : void FindBinDB (Double_t x,Double_t y,Int_t &binX,Int_t &binY); //find indices of DB
33 : Bool_t UniformDistrib (); //to check isotropy in phi Cerenkov
34 : void FillZeroChan ()const; //complete the DB
35 : Bool_t CkovHiddenTrk (AliESDtrack *pTrk,TClonesArray *pClu,Int_t index, Double_t nmean); //Pattern recognition without trackinf information
36 : Bool_t CluPreFilter (TClonesArray *pClu ); //Pre clustering filter to cut bkg clusters
37 : Bool_t DoRecHiddenTrk ( ); //Calling to the fitted procedures
38 : Bool_t FindShape (Double_t &thTrkRec,Double_t &phiTrkRec,Double_t &thetaCRec); //Find shape of the ring
39 : Bool_t ShapeModel (Int_t np,Double_t *phiphot,Double_t *dist,Double_t &xA,Double_t &xB,Double_t &phiStart);//initial shape model for the cluster candidates
40 : Double_t VertParab (Double_t x1,Double_t y1,Double_t x2, Double_t y2, Double_t x3, Double_t y3)const;//calculate the coord. of the min. for a parabole for 3 points
41 : Bool_t FitFree (Double_t thTrkRec,Double_t phiTrkRec); //Fit (th,ph) of the track and ckovFit as result
42 : Bool_t FitRing (Double_t thTrkRec,Double_t phiTrkRec); //Fit (th,ph) of the track
43 : Double_t FindSimmPhi (); //find phi of the ring with min. dist. algorithm
44 : Int_t r2 (Double_t *coef, Double_t &x1, Double_t &x2); // solution of 2nd degree equation
45 0 : void SetNClu (Int_t nclu ) {fNClu=nclu;} //Setter for # of clusters
46 0 : void SetClCk (Int_t i,Bool_t what ) {fClCk[i]=what;} //Setter for cluster flags
47 0 : void SetCkovFit (Double_t ckov ) {fCkovFit=ckov;} //Setter for ckov fitted
48 0 : void SetCkovSig2 (Double_t rms ) {fCkovSig2=rms;} //Setter for sigma2 ckov fitted
49 0 : void SetTrkFit (Double_t th,Double_t ph ) {fThTrkFit = th;fPhTrkFit = ph;}//Setter for (th,ph) of the track
50 0 : void SetNCluFit (Int_t ncluFit ) {fNCluFit=ncluFit;} //Setter for # of clusters used in the fit
51 0 : void SetPhotAngles (Int_t i,Double_t th, Double_t ph ) {fPhiPhot[i]=ph;fThetaPhot[i]=th;} //Setter of the Cerenkov angles for a given photon
52 0 : void SetFitStatus (Bool_t status ) {fFitStatus = status;} //Setter for fit status
53 0 : void SetRadXY (Double_t x,Double_t y ) {fRadX = x;fRadY = y;} //Setter for (th,ph) of the track
54 : static void FunMinPhot(Int_t&/* */,Double_t* /* */,Double_t &f,Double_t *par,Int_t iflag); //Fit function to minimize thetaCer RMS/Sqrt(n) of n clusters
55 0 : Int_t CompactDB (Int_t binX,Int_t binY) const {return fgDB[binX][binY];} //find compact word of DB
56 0 : Int_t IdxMip ()const {return fIdxMip;} //Getter index of MIP
57 0 : Double_t MipX ()const {return fMipX;} //Getter of x MIP in LORS
58 0 : Double_t MipY ()const {return fMipY;} //Getter of y MIP in LORS
59 0 : Double_t MipQ ()const {return fMipQ;} //Getter of Q MIP
60 0 : Double_t RadX ()const {return fRadX;} //Getter of x at RAD in LORS
61 0 : Double_t RadY ()const {return fRadY;} //Getter of y at RAD in LORS
62 0 : Int_t NClu ()const {return fNClu;} //Getter of cluster multiplicity
63 0 : Int_t NCluFit ()const {return fNCluFit;} //Getter of n. photons used to fit the ring
64 0 : Double_t XClu (Int_t i)const {return fXClu[i];} //Getter of x clu
65 0 : Double_t YClu (Int_t i)const {return fYClu[i];} //Getter of y clu
66 0 : Bool_t ClCk (Int_t i)const {return fClCk[i];} //Getter of cluster flags
67 0 : Double_t PhotPhi (Int_t i)const {return fPhiPhot[i];} //Getter of the Phi Cerenkov angle for a given photon
68 0 : Double_t PhotTheta (Int_t i)const {return fThetaPhot[i];} //Getter of the Theta Cerenkov angle for a given photon
69 0 : Bool_t FitStatus ()const {return fFitStatus;} //Getter of status of the fit
70 0 : Double_t CkovFit ()const {return fCkovFit;} //Getter of ckov angle fitted
71 0 : Double_t ThTrkIn ()const {return fThTrkIn;} //Getter of theta started of the track
72 0 : Double_t PhTrkIn ()const {return fPhTrkIn;} //Getter of phi started of the track
73 0 : Double_t ThTrkFit ()const {return fThTrkFit;} //Getter of theta fitted of the track
74 0 : Double_t PhTrkFit ()const {return fPhTrkFit;} //Getter of phi fitted of the track
75 : //
76 : protected:
77 : //
78 : Double_t fMipX; //mip X position for Hidden Track Algorithm
79 : Double_t fMipY; //mip Y position for Hidden Track Algorithm
80 : Double_t fMipQ; //mip Q for Hidden Track Algorithm
81 : Double_t fRadX; //rad X position for Hidden Track Algorithm
82 : Double_t fRadY; //rad Y position for Hidden Track Algorithm
83 : Int_t fIdxMip; //mip index in the clus list
84 : Int_t fNClu; //n clusters to fit
85 : Double_t *fXClu; //container for x clus position
86 : Double_t *fYClu; //container for y clus position
87 : Double_t *fPhiPhot; //container for phi clus
88 : Double_t *fThetaPhot; //container for theta Cerenkov clus
89 : Bool_t *fClCk; //flag if cluster is used in fitting
90 : Double_t fThTrkIn; //theta started from ShapeModel
91 : Double_t fPhTrkIn; //phi started from ShapeModel
92 : Double_t fThTrkFit; //theta fitted of the track
93 : Double_t fPhTrkFit; //phi fitted of the track
94 : Double_t fCkovFit; //estimated ring Cherenkov angle
95 : Int_t fNCluFit; //n clusters used to fit the ring
96 : Double_t fCkovSig2; //estimated error^2 on ring Cherenkov angle
97 : Bool_t fFitStatus; //status of the fit 0=ok 1=still to be optimized
98 :
99 : AliHMPIDParam *fParam; //Pointer to AliHMPIDParam
100 : static Int_t fgDB[500][150]; //tmp DB
101 : //
102 : private:
103 : AliHMPIDReconHTA(const AliHMPIDReconHTA& r); //dummy copy constructor
104 : AliHMPIDReconHTA &operator=(const AliHMPIDReconHTA& r); //dummy assignment operator
105 : //
106 12 : ClassDef(AliHMPIDReconHTA,5)
107 : };
108 :
109 : #endif // #ifdef AliHMPIDReconHTA_cxx
110 :
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