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1 | #ifndef AliHMPIDRecon_h | |
2 | #define AliHMPIDRecon_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 | // AliHMPIDRecon // | |
10 | // // | |
11 | // HMPID class to perfom pattern recognition based on Hough transfrom // | |
12 | // // | |
13 | ////////////////////////////////////////////////////////////////////////// | |
14 | ||
15 | ||
16 | #include <TTask.h> //base class | |
17 | #include <TVector3.h> //fields | |
18 | ||
19 | class TClonesArray; //CkovAngle() | |
20 | class AliESDtrack; //CkovAngle() | |
21 | class AliHMPIDParam;//general pourpose | |
22 | ||
23 | class AliHMPIDRecon : public TTask | |
24 | { | |
25 | public : | |
26 | AliHMPIDRecon(); | |
27 | virtual ~AliHMPIDRecon() {;} //dtor | |
28 | ||
29 | void InitVars (Int_t n); //init space for variables | |
30 | void DeleteVars ()const; //delete variables | |
31 | void CkovAngle (AliESDtrack *pTrk,TClonesArray *pCluLst,Int_t index,Double_t nmean ); //reconstructed Theta Cerenkov | |
32 | Bool_t FindPhotCkov (Double_t cluX,Double_t cluY,Double_t &thetaCer,Double_t &phiCer ); //find ckov angle for single photon candidate | |
33 | Double_t FindRingCkov (Int_t iNclus ); //best ckov for ring formed by found photon candidates | |
34 | void FindRingGeom (Double_t ckovAng,Int_t level=1 ); //estimated area of ring in cm^2 and portion accepted by geometry | |
35 | TVector2 IntWithEdge (TVector2 p1,TVector2 p2 )const;//find intercection between plane and lines of 2 thetaC | |
36 | Int_t FlagPhot (Double_t ckov ); //is photon ckov near most probable track ckov | |
37 | Double_t HoughResponse( ); //most probable track ckov angle | |
38 | void Propagate (const TVector3 dir, TVector3 &pos,Double_t z )const;//propagate photon alogn the line | |
39 | void Refract ( TVector3 &dir, Double_t n1, Double_t n2)const;//refract photon on the boundary | |
40 | TVector2 TracePhot (Double_t ckovTh,Double_t ckovPh )const;//trace photon created by track to PC | |
41 | TVector2 TraceForward (TVector3 dirCkov )const;//tracing forward a photon from (x,y) to PC | |
42 | void Lors2Trs (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer )const;//LORS to TRS | |
43 | void Trs2Lors (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer )const;//TRS to LORS | |
44 | TVector2 GetMip ( )const | |
45 | {return fMipPos;} //mip coordinates | |
46 | Double_t GetRingArea ( )const | |
47 | {return fRingArea;} //area of the current ring in cm^2 | |
48 | Double_t GetRingAcc ( )const | |
49 | {return fRingAcc;} //portion of the ring ([0,1]) accepted by geometry.To scale n. of photons | |
50 | void SetTrack (Double_t xRad,Double_t yRad,Double_t theta,Double_t phi ) | |
51 | {fTrkDir.SetMagThetaPhi(1,theta,phi); fTrkPos.Set(xRad,yRad);} //set track parameter at RAD | |
52 | void SetImpPC (Double_t xPc,Double_t yPc ) | |
53 | {fPc.Set(xPc,yPc);} //set track impact to PC | |
54 | void SetMip (Double_t xmip,Double_t ymip ) | |
55 | {fMipPos.Set(xmip,ymip);} //set track impact to PC | |
56 | enum ETrackingFlags {kNotPerformed=-20,kMipDistCut=-9,kMipQdcCut=-5,kNoPhotAccept=-11,kNoRad = -22}; | |
57 | // | |
58 | protected: | |
59 | Int_t fPhotCnt; // counter of photons candidate | |
60 | Int_t *fPhotFlag; // flags of photon candidates | |
61 | Double_t *fPhotCkov; // Ckov angles of photon candidates, [rad] | |
62 | Double_t *fPhotPhi; // phis of photons candidates, [rad] | |
63 | Double_t *fPhotWei; // weigths of photon candidates | |
64 | Double_t fCkovSigma2; // sigma2 of the reconstructed ring | |
65 | ||
66 | Bool_t fIsWEIGHT; // flag to consider weight procedure | |
67 | Float_t fDTheta; // Step for sliding window | |
68 | Float_t fWindowWidth; // Hough width of sliding window | |
69 | ||
70 | Double_t fRingArea; // area of a given ring | |
71 | Double_t fRingAcc; // fraction of the ring accepted by geometry | |
72 | TVector3 fTrkDir; // track direction in LORS at RAD | |
73 | TVector2 fTrkPos; // track positon in LORS at RAD | |
74 | TVector2 fMipPos; // mip positon for a given track | |
75 | TVector2 fPc; // track position at PC | |
76 | ||
77 | AliHMPIDParam *fParam; // Pointer to AliHMPIDParam | |
78 | ||
79 | private: | |
80 | AliHMPIDRecon(const AliHMPIDRecon& r); //dummy copy constructor | |
81 | AliHMPIDRecon &operator=(const AliHMPIDRecon& r); //dummy assignment operator | |
82 | // | |
83 | ClassDef(AliHMPIDRecon,1) | |
84 | }; | |
85 | ||
86 | #endif // #ifdef AliHMPIDRecon_cxx | |
87 |