-#ifndef ALIITSTRACKER_H
-#define ALIITSTRACKER_H
+#ifndef ALIITSTRACKERV2_H
+#define ALIITSTRACKERV2_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
//-------------------------------------------------------------------------
// ITS tracker
-//
-// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
+// reads AliITSRecPoint clusters and creates AliITStrackV2 tracks
+// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
//-------------------------------------------------------------------------
#include "AliTracker.h"
-#include "AliITSrecoV2.h"
+#include "AliITSRecoParam.h"
#include "AliITStrackV2.h"
+#include "AliITSgeomTGeo.h"
-class AliITSclusterV2;
-class AliITSgeom;
-class TFile;
+
+class AliITSRecPoint;
+class AliESDEvent;
+class TTree;
//-------------------------------------------------------------------------
class AliITStrackerV2 : public AliTracker {
public:
- AliITStrackerV2():AliTracker(){}
- AliITStrackerV2(const AliITSgeom *geom) throw (const Char_t *);
-
+ AliITStrackerV2();
+ AliITStrackerV2(const Char_t *geom);
+ ~AliITStrackerV2(){}
AliCluster *GetCluster(Int_t index) const;
- Int_t Clusters2Tracks(const TFile *in, TFile *out);
- Int_t PropagateBack(const TFile *in, TFile *out) {return 0;}
-
-private:
-
- Double_t GetEffectiveThickness(Double_t phi, Double_t z) const;
-
+ AliITSRecPoint *GetCluster(Int_t l, Int_t c) const {
+ return fgLayers[l].GetCluster(c);
+ }
+ Int_t GetNumberOfClustersLayer(Int_t n) const {
+ return fgLayers[n].GetNumberOfClusters();
+ }
+ Int_t LoadClusters(TTree *cf);
+ void UnloadClusters();
+ Int_t Clusters2Tracks(AliESDEvent *event);
+ Int_t PropagateBack(AliESDEvent *event);
+ Int_t RefitInward(AliESDEvent *event);
+ Bool_t RefitAt(Double_t x, AliITStrackV2 *seed,
+ const AliITStrackV2 *t, Bool_t extra=kFALSE);
+ void SetupFirstPass(Int_t *flags, Double_t *cuts=0);
+ void SetupSecondPass(Int_t *flags, Double_t *cuts=0);
+
+ void SetLastLayerToTrackTo(Int_t l=0) {fLastLayerToTrackTo=l;}
+ void SetLayersNotToSkip(Int_t *l);
+
+ void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
+
+ class AliITSdetector {
+ public:
+ AliITSdetector():fR(0.),fPhi(0.){}
+ AliITSdetector(Double_t r,Double_t phi):fR(r),fPhi(phi){}
+ Double_t GetR() const {return fR;}
+ Double_t GetPhi() const {return fPhi;}
+ private:
+ Double_t fR; // polar coordinates
+ Double_t fPhi; // of this detector
+ };
+
+ class AliITSlayer {
+ public:
+ enum {kNsector=5, kMaxClusterPerSector=AliITSRecoParam::kMaxClusterPerLayer/kNsector};
+ AliITSlayer();
+ AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
+ ~AliITSlayer();
+ Int_t InsertCluster(AliITSRecPoint *c);
+ void ResetClusters();
+ Int_t SelectClusters(Float_t zmi, Float_t zma, Float_t ymi, Float_t yma);
+ const AliITSRecPoint *GetNextCluster(Int_t &ci);
+ void ResetRoad();
+ Double_t GetRoad() const {return fRoad;}
+ Double_t GetR() const {return fR;}
+ AliITSRecPoint *GetCluster(Int_t i) const { return fClusters[i]; }
+ AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
+ Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
+ Double_t GetThickness(Double_t y, Double_t z, Double_t &x0) const;
+ Int_t GetNladders() const {return fNladders;}
+ Int_t GetNdetectors() const {return fNdetectors;}
+ Int_t GetNumberOfClusters() const;
+ protected:
+ AliITSlayer(const AliITSlayer&);
+ AliITSlayer &operator=(const AliITSlayer &tr);
+ Double_t fR; // mean radius of this layer
+ Double_t fPhiOffset; // offset of the first detector in Phi
+ Int_t fNladders; // number of ladders
+ Double_t fZOffset; // offset of the first detector in Z
+ Int_t fNdetectors; // detectors/ladder
+ AliITSdetector *fDetectors; // array of detectors
+
+ AliITSRecPoint *fClusters[AliITSRecoParam::kMaxClusterPerLayer]; // pointers to clusters
+ Int_t fN[kNsector]; // numbers of clusters sector by sector
+
+ Int_t fIndex[AliITSRecoParam::kMaxClusterPerLayer]; // indexes of selected clusters
+ Int_t fNsel; // number of selected clusters
+
+ Double_t fRoad; // road defined by the cluster density
+ Int_t FindClusterIndex(Float_t z, Int_t s) const;
+ };
+
+protected:
+ AliITStrackerV2(const AliITStrackerV2&);
+ void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
+ Double_t GetEffectiveThickness(Double_t y, Double_t z) const;
void FollowProlongation();
Int_t TakeNextProlongation();
-
void ResetBestTrack() {
fBestTrack.~AliITStrackV2();
new(&fBestTrack) AliITStrackV2(fTrackToFollow);
}
-
void ResetTrackToFollow(const AliITStrackV2 &t) {
fTrackToFollow.~AliITStrackV2();
new(&fTrackToFollow) AliITStrackV2(t);
}
+ Int_t fI; // index of the current layer
+ static AliITSlayer fgLayers[AliITSgeomTGeo::kNLayers];// ITS layers
+ AliITStrackV2 fTracks[AliITSgeomTGeo::kNLayers]; // track estimations at the ITS layers
+ AliITStrackV2 fBestTrack; // "best" track
+ AliITStrackV2 fTrackToFollow; // followed track
+ Int_t fPass; // current pass through the data
+ Int_t fConstraint[2]; // constraint flags
- //The two subclasses are public in order to access one from the another
- public:
-class AliITSdetector {
-private:
- Double_t fR; // polar coordinates
- Double_t fPhi; // of this detector
-
-public:
- AliITSdetector(){}
- AliITSdetector(Double_t r,Double_t phi) {fR=r; fPhi=phi;}
-
- void *operator new(size_t s,AliITSdetector *p) {return p;}
-
- Double_t GetR() const {return fR;}
- Double_t GetPhi() const {return fPhi;}
-};
-
-class AliITSlayer {
- Double_t fR; // mean radius of this layer
- Double_t fPhiOffset; // offset of the first detector in Phi
- Int_t fNladders; // number of ladders
- Double_t fZOffset; // offset of the first detector in Z
- Int_t fNdetectors; // detectors/ladder
- AliITSdetector *fDetectors; // array of detectors
-
- Int_t fN; // number of clusters
- AliITSclusterV2 *fClusters[kMaxClusterPerLayer]; // pointers to clusters
-
- Double_t fZmax; // edges
- Double_t fYmin; // of the
- Double_t fYmax; // "window"
- Int_t fI; // index of the current cluster within the "window"
+ Int_t fLayersNotToSkip[AliITSgeomTGeo::kNLayers]; // layer masks
+ Int_t fLastLayerToTrackTo; // the innermost layer to track to
- Int_t FindClusterIndex(Double_t z) const;
-
-public:
- AliITSlayer();
- AliITSlayer(Double_t r, Double_t p, Double_t z, Int_t nl, Int_t nd);
- ~AliITSlayer();
- Int_t InsertCluster(AliITSclusterV2 *c);
- void SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin,Double_t ymax);
- const AliITSclusterV2 *GetNextCluster(Int_t &ci);
-
- void *operator new(size_t s, AliITSlayer *p) {return p;}
-
- Double_t GetR() const {return fR;}
- AliITSclusterV2 *GetCluster(Int_t i) const {return fClusters[i];}
- AliITSdetector &GetDetector(Int_t n) const { return fDetectors[n]; }
- Int_t FindDetectorIndex(Double_t phi, Double_t z) const;
- Double_t GetThickness(Double_t phi, Double_t z) const;
-
- Int_t InRoad() const ;
-};
-
- private:
- Int_t fI; // index of the current layer
- static AliITSlayer fLayers[kMaxLayer]; // ITS layers
- AliITStrackV2 fTracks[kMaxLayer]; // track estimations at the ITS layers
- AliITStrackV2 fBestTrack; // "best" track
- AliITStrackV2 fTrackToFollow; // followed track
-
- Double_t fYV; // Y-coordinate of the primary vertex
- Double_t fZV; // Z-coordinate of the primary vertex
+private:
+ AliITStrackerV2 &operator=(const AliITStrackerV2 &tr);
+ ClassDef(AliITStrackerV2,1) //ITS tracker V2
};
+inline void AliITStrackerV2::SetupFirstPass(Int_t *flags, Double_t *cuts) {
+ // This function sets up flags and cuts for the first tracking pass
+ //
+ // flags[0] - vertex constaint flag
+ // negative means "skip the pass"
+ // 0 means "no constraint"
+ // positive means "normal constraint"
+
+ fConstraint[0]=flags[0];
+ if (cuts==0) return;
+}
+
+inline void AliITStrackerV2::SetupSecondPass(Int_t *flags, Double_t *cuts) {
+ // This function sets up flags and cuts for the second tracking pass
+ //
+ // flags[0] - vertex constaint flag
+ // negative means "skip the pass"
+ // 0 means "no constraint"
+ // positive means "normal constraint"
+
+ fConstraint[1]=flags[0];
+ if (cuts==0) return;
+}
+
+inline void AliITStrackerV2::CookLabel(AliKalmanTrack *t,Float_t wrong) const {
+ //--------------------------------------------------------------------
+ //This function "cooks" a track label. If label<0, this track is fake.
+ //--------------------------------------------------------------------
+ Int_t tpcLabel=t->GetLabel();
+ if (tpcLabel<0) return;
+ AliTracker::CookLabel(t,wrong);
+ if (tpcLabel != t->GetLabel()) t->SetLabel(-tpcLabel);
+}
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff