#ifndef AliHMPIDRecon_h #define AliHMPIDRecon_h /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ ////////////////////////////////////////////////////////////////////////// // // // AliHMPIDRecon // // // // HMPID class to perfom pattern recognition based on Hough transfrom // // // ////////////////////////////////////////////////////////////////////////// #include //base class #include //fields class TClonesArray; //CkovAngle() class AliESDtrack; //CkovAngle() class AliHMPIDParam;//general pourpose class AliHMPIDRecon : public TNamed { public : AliHMPIDRecon(); virtual ~AliHMPIDRecon() {;} //dtor void InitVars (Int_t n); //init space for variables void DeleteVars ()const; //delete variables void CkovAngle (AliESDtrack *pTrk,TClonesArray *pCluLst,Int_t index,Double_t nmean,Float_t xRa,Float_t yRa );//reconstructed Theta Cerenkov Bool_t FindPhotCkov (Double_t cluX,Double_t cluY,Double_t &thetaCer,Double_t &phiCer ); //find ckov angle for single photon candidate Double_t FindRingCkov (Int_t iNclus ); //best ckov for ring formed by found photon candidates void FindRingGeom (Double_t ckovAng,Int_t level=1 ); //estimated area of ring in cm^2 and portion accepted by geometry TVector2 IntWithEdge (TVector2 p1,TVector2 p2 )const;//find intercection between plane and lines of 2 thetaC Int_t FlagPhot (Double_t ckov,TClonesArray *pCluLst,AliESDtrack *pTrk ); //is photon ckov near most probable track ckov Double_t HoughResponse( ); //most probable track ckov angle void Propagate (const TVector3 dir, TVector3 &pos,Double_t z )const;//propagate photon alogn the line void Refract ( TVector3 &dir, Double_t n1, Double_t n2)const;//refract photon on the boundary TVector2 TracePhot (Double_t ckovTh,Double_t ckovPh )const;//trace photon created by track to PC void AddObjectToFriends(TClonesArray *pCluLst, Int_t photonIndex, AliESDtrack *pTrk ); // Add AliHMPIDCluster object to ESD friends TVector2 TraceForward (TVector3 dirCkov )const;//tracing forward a photon from (x,y) to PC void Lors2Trs (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer )const;//LORS to TRS void Trs2Lors (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer )const;//TRS to LORS TVector2 GetMip ( )const {return fMipPos;} //mip coordinates Double_t GetRingArea ( )const {return fRingArea;} //area of the current ring in cm^2 Double_t GetRingAcc ( )const {return fRingAcc;} //portion of the ring ([0,1]) accepted by geometry.To scale n. of photons Double_t FindRingExt (Double_t ckov,Int_t ch,Double_t xPc,Double_t yPc,Double_t thRa,Double_t phRa);//find ring acceptance by external parameters void SetTrack (Double_t xRad,Double_t yRad,Double_t theta,Double_t phi ) {fTrkDir.SetMagThetaPhi(1,theta,phi); fTrkPos.Set(xRad,yRad);} //set track parameter at RAD void SetImpPC (Double_t xPc,Double_t yPc ) {fPc.Set(xPc,yPc);} //set track impact to PC void SetMip (Double_t xmip,Double_t ymip ) {fMipPos.Set(xmip,ymip);} //set track impact to PC enum ETrackingFlags {kNotPerformed=-20,kMipDistCut=-9,kMipQdcCut=-5,kNoPhotAccept=-11,kNoRad = -22}; // protected: Int_t fPhotCnt; // counter of photons candidate Int_t *fPhotFlag; // flags of photon candidates Int_t *fPhotClusIndex; // cluster index of photon candidates Double_t *fPhotCkov; // Ckov angles of photon candidates, [rad] Double_t *fPhotPhi; // phis of photons candidates, [rad] Double_t *fPhotWei; // weigths of photon candidates Double_t fCkovSigma2; // sigma2 of the reconstructed ring Bool_t fIsWEIGHT; // flag to consider weight procedure Float_t fDTheta; // Step for sliding window Float_t fWindowWidth; // Hough width of sliding window Double_t fRingArea; // area of a given ring Double_t fRingAcc; // fraction of the ring accepted by geometry TVector3 fTrkDir; // track direction in LORS at RAD TVector2 fTrkPos; // track positon in LORS at RAD TVector2 fMipPos; // mip positon for a given track TVector2 fPc; // track position at PC AliHMPIDParam *fParam; // Pointer to AliHMPIDParam private: AliHMPIDRecon(const AliHMPIDRecon& r); //dummy copy constructor AliHMPIDRecon &operator=(const AliHMPIDRecon& r); //dummy assignment operator // ClassDef(AliHMPIDRecon,3) }; #endif // #ifdef AliHMPIDRecon_cxx