Updated MUONRawStreamTrackerErrorCount function
[u/mrichter/AliRoot.git] / HMPID / AliHMPIDRecon.h
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 <TNamed.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 TNamed 
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,Float_t xRa,Float_t yRa );//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,TClonesArray *pCluLst,AliESDtrack *pTrk              );     //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   void     AddObjectToFriends(TClonesArray *pCluLst, Int_t photonIndex, AliESDtrack *pTrk   );     // Add AliHMPIDCluster object to ESD friends
42   TVector2 TraceForward (TVector3 dirCkov                                                   )const;//tracing forward a photon from (x,y) to PC
43   void     Lors2Trs     (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer               )const;//LORS to TRS 
44   void     Trs2Lors     (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer               )const;//TRS to LORS
45   TVector2 GetMip       (                                                                   )const 
46                         {return fMipPos;}                                                          //mip coordinates
47   Double_t GetRingArea  (                                                                   )const
48                         {return fRingArea;}                                                        //area of the current ring in cm^2 
49   Double_t GetRingAcc   (                                                                   )const
50                         {return fRingAcc;}                                                         //portion of the ring ([0,1]) accepted by geometry.To scale n. of photons 
51   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
52   void     SetTrack     (Double_t xRad,Double_t yRad,Double_t theta,Double_t phi            )
53                                 {fTrkDir.SetMagThetaPhi(1,theta,phi);  fTrkPos.Set(xRad,yRad);}    //set track parameter at RAD
54   void     SetImpPC     (Double_t xPc,Double_t yPc                                          )
55                                 {fPc.Set(xPc,yPc);}                                                //set track impact to PC 
56   void     SetMip       (Double_t xmip,Double_t ymip                                        )
57                                 {fMipPos.Set(xmip,ymip);}                                          //set track impact to PC
58   enum ETrackingFlags {kNotPerformed=-20,kMipDistCut=-9,kMipQdcCut=-5,kNoPhotAccept=-11,kNoRad = -22};
59 //
60 protected:
61   Int_t     fPhotCnt;                           // counter of photons candidate
62   Int_t    *fPhotFlag;                          // flags of photon candidates
63   Int_t    *fPhotClusIndex;                     // cluster index of photon candidates
64   Double_t *fPhotCkov;                          // Ckov angles of photon candidates, [rad]
65   Double_t *fPhotPhi;                           // phis of photons candidates, [rad]
66   Double_t *fPhotWei;                           // weigths of photon candidates
67   Double_t  fCkovSigma2;                        // sigma2 of the reconstructed ring
68
69   Bool_t    fIsWEIGHT;                          // flag to consider weight procedure
70   Float_t   fDTheta;                            // Step for sliding window
71   Float_t   fWindowWidth;                       // Hough width of sliding window
72   
73   Double_t  fRingArea;                          // area of a given ring
74   Double_t  fRingAcc;                           // fraction of the ring accepted by geometry
75   TVector3  fTrkDir;                            // track direction in LORS at RAD
76   TVector2  fTrkPos;                            // track positon in LORS at RAD
77   TVector2  fMipPos;                            // mip positon for a given track
78   TVector2  fPc;                                // track position at PC
79   
80   AliHMPIDParam *fParam;                        // Pointer to AliHMPIDParam
81   
82 private:
83   AliHMPIDRecon(const AliHMPIDRecon& r);              //dummy copy constructor
84   AliHMPIDRecon &operator=(const AliHMPIDRecon& r);   //dummy assignment operator
85 //
86   ClassDef(AliHMPIDRecon,3)
87 };
88
89 #endif // #ifdef AliHMPIDRecon_cxx
90