LCOV - code coverage report
Current view: top level - ITS/ITSbase - AliITStrackerV2.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 30 3.3 %
Date: 2016-06-14 17:26:59 Functions: 1 28 3.6 %

          Line data    Source code
       1             : #ifndef ALIITSTRACKERV2_H
       2             : #define ALIITSTRACKERV2_H
       3             : /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
       4             :  * See cxx source for full Copyright notice                               */
       5             : 
       6             : //-------------------------------------------------------------------------
       7             : //                          ITS tracker
       8             : //     reads AliITSRecPoint clusters and creates AliITStrackV2 tracks
       9             : //           Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch 
      10             : //-------------------------------------------------------------------------
      11             : #include "AliTracker.h"
      12             : #include "AliITSRecoParam.h"
      13             : #include "AliITStrackV2.h"
      14             : #include "AliITSgeomTGeo.h"
      15             : 
      16             : 
      17             : class AliITSRecPoint;
      18             : class AliESDEvent;
      19             : class TTree;
      20             : 
      21             : 
      22             : //-------------------------------------------------------------------------
      23             : class AliITStrackerV2 : public AliTracker {
      24             : public:
      25             :   AliITStrackerV2();
      26             :   AliITStrackerV2(const Char_t *geom);
      27           0 :   ~AliITStrackerV2(){}
      28             :   AliCluster *GetCluster(Int_t index) const;
      29             :   AliITSRecPoint *GetCluster(Int_t l, Int_t c) const {
      30           0 :     return fgLayers[l].GetCluster(c);
      31             :   }
      32             :   Int_t GetNumberOfClustersLayer(Int_t n) const {
      33           0 :      return fgLayers[n].GetNumberOfClusters();
      34             :   }   
      35             :   Int_t LoadClusters(TTree *cf);
      36             :   void UnloadClusters();
      37             :   Int_t Clusters2Tracks(AliESDEvent *event);
      38             :   Int_t PropagateBack(AliESDEvent *event);
      39             :   Int_t RefitInward(AliESDEvent *event);
      40             :   Bool_t RefitAt(Double_t x, AliITStrackV2 *seed, 
      41             :                  const AliITStrackV2 *t, Bool_t extra=kFALSE);
      42             :   void SetupFirstPass(Int_t *flags, Double_t *cuts=0);
      43             :   void SetupSecondPass(Int_t *flags, Double_t *cuts=0);
      44             : 
      45           0 :   void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;} 
      46             :   void SetLayersNotToSkip(Int_t *l);
      47             : 
      48             :   void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
      49             : 
      50             :   class AliITSdetector {
      51             :   public:
      52           0 :     AliITSdetector():fR(0.),fPhi(0.){}
      53           0 :     AliITSdetector(Double_t r,Double_t phi):fR(r),fPhi(phi){}
      54           0 :     Double_t GetR()   const {return fR;}
      55           0 :     Double_t GetPhi() const {return fPhi;}
      56             :   private:
      57             :     Double_t fR;    // polar coordinates 
      58             :     Double_t fPhi;  // of this detector
      59             :   };
      60             : 
      61             :   class AliITSlayer {
      62             :   public:
      63             :     enum {kNsector=5, kMaxClusterPerSector=AliITSRecoParam::kMaxClusterPerLayer/kNsector};
      64             :     AliITSlayer();
      65             :     AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
      66             :    ~AliITSlayer();
      67             :     Int_t InsertCluster(AliITSRecPoint *c);
      68             :     void ResetClusters();
      69             :     Int_t SelectClusters(Float_t zmi, Float_t zma, Float_t ymi, Float_t yma);
      70             :     const AliITSRecPoint *GetNextCluster(Int_t &ci);
      71             :     void ResetRoad();
      72           0 :     Double_t GetRoad() const {return fRoad;}
      73           0 :     Double_t GetR() const {return fR;}
      74           0 :     AliITSRecPoint *GetCluster(Int_t i) const { return fClusters[i]; } 
      75           0 :     AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
      76             :     Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
      77             :     Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const;
      78           0 :     Int_t GetNladders() const {return fNladders;}
      79           0 :     Int_t GetNdetectors() const {return fNdetectors;}
      80             :     Int_t GetNumberOfClusters() const;
      81             :   protected:
      82             :     AliITSlayer(const AliITSlayer&);
      83             :     AliITSlayer &operator=(const AliITSlayer &tr);  
      84             :     Double_t fR;                // mean radius of this layer
      85             :     Double_t fPhiOffset;        // offset of the first detector in Phi
      86             :     Int_t fNladders;            // number of ladders
      87             :     Double_t fZOffset;          // offset of the first detector in Z
      88             :     Int_t fNdetectors;          // detectors/ladder
      89             :     AliITSdetector *fDetectors; // array of detectors
      90             : 
      91             :     AliITSRecPoint *fClusters[AliITSRecoParam::kMaxClusterPerLayer]; // pointers to clusters
      92             :     Int_t fN[kNsector];         // numbers of clusters sector by sector 
      93             : 
      94             :     Int_t fIndex[AliITSRecoParam::kMaxClusterPerLayer]; // indexes of selected clusters 
      95             :     Int_t fNsel;                       // number of selected clusters
      96             : 
      97             :     Double_t fRoad;     // road defined by the cluster density
      98             :     Int_t FindClusterIndex(Float_t z, Int_t s) const;
      99             :   };
     100             : 
     101             : protected:
     102             :   AliITStrackerV2(const AliITStrackerV2&);
     103             :   void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
     104             :   Double_t GetEffectiveThickness(Double_t y, Double_t z) const;
     105             :   void  FollowProlongation();
     106             :   Int_t TakeNextProlongation();
     107             :   void ResetBestTrack() {
     108           0 :      fBestTrack.~AliITStrackV2();
     109           0 :      new(&fBestTrack) AliITStrackV2(fTrackToFollow);
     110           0 :   }
     111             :   void ResetTrackToFollow(const AliITStrackV2 &t) {
     112           0 :      fTrackToFollow.~AliITStrackV2();
     113           0 :      new(&fTrackToFollow) AliITStrackV2(t);
     114           0 :   }
     115             :   Int_t fI;                              // index of the current layer
     116             :   static AliITSlayer fgLayers[AliITSgeomTGeo::kNLayers];// ITS layers
     117             :   AliITStrackV2 fTracks[AliITSgeomTGeo::kNLayers];      // track estimations at the ITS layers
     118             :   AliITStrackV2 fBestTrack;              // "best" track 
     119             :   AliITStrackV2 fTrackToFollow;          // followed track
     120             :   Int_t fPass;                           // current pass through the data 
     121             :   Int_t fConstraint[2];                  // constraint flags
     122             : 
     123             :   Int_t fLayersNotToSkip[AliITSgeomTGeo::kNLayers];     // layer masks
     124             :   Int_t fLastLayerToTrackTo;             // the innermost layer to track to
     125             : 
     126             : private:
     127             :   AliITStrackerV2 &operator=(const AliITStrackerV2 &tr);  
     128         118 :   ClassDef(AliITStrackerV2,1)   //ITS tracker V2
     129             : };
     130             : 
     131             : 
     132             : inline void AliITStrackerV2::SetupFirstPass(Int_t *flags, Double_t *cuts) {
     133             :   // This function sets up flags and cuts for the first tracking pass   
     134             :   //
     135             :   //   flags[0] - vertex constaint flag                                
     136             :   //              negative means "skip the pass"                        
     137             :   //              0        means "no constraint"                        
     138             :   //              positive means "normal constraint"                    
     139             : 
     140           0 :    fConstraint[0]=flags[0];
     141             :    if (cuts==0) return;
     142           0 : }
     143             : 
     144             : inline void AliITStrackerV2::SetupSecondPass(Int_t *flags, Double_t *cuts) {
     145             :   // This function sets up flags and cuts for the second tracking pass   
     146             :   //
     147             :   //   flags[0] - vertex constaint flag                                
     148             :   //              negative means "skip the pass"                        
     149             :   //              0        means "no constraint"                        
     150             :   //              positive means "normal constraint"                    
     151             : 
     152           0 :    fConstraint[1]=flags[0];
     153             :    if (cuts==0) return;
     154           0 : }
     155             : 
     156             : inline void AliITStrackerV2::CookLabel(AliKalmanTrack *t,Float_t wrong) const {
     157             :   //--------------------------------------------------------------------
     158             :   //This function "cooks" a track label. If label<0, this track is fake.
     159             :   //--------------------------------------------------------------------
     160           0 :    Int_t tpcLabel=t->GetLabel();
     161           0 :    if (tpcLabel<0) return;
     162           0 :    AliTracker::CookLabel(t,wrong);
     163           0 :    if (tpcLabel != t->GetLabel()) t->SetLabel(-tpcLabel); 
     164           0 : }
     165             : 
     166             : #endif

Generated by: LCOV version 1.11