X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TPC%2FAliTPCtrackerMI.h;h=03197c9a2d08bc3b7cc1d6806e81cfc06903791b;hb=73ce6137cfeffee5a66c4f0bb6480c8969f91431;hp=38111eaa9fa6f466972a7cdac04a7ee3e5cffee2;hpb=91162307f887aa0fbda9c0587da62b1a10b63672;p=u%2Fmrichter%2FAliRoot.git

diff --git a/TPC/AliTPCtrackerMI.h b/TPC/AliTPCtrackerMI.h
index 38111eaa9fa..03197c9a2d0 100644
--- a/TPC/AliTPCtrackerMI.h
+++ b/TPC/AliTPCtrackerMI.h
@@ -7,287 +7,136 @@
 /* $Id$ */
 
 //-------------------------------------------------------
-//                       TPC trackerMI
+//                       TPC tracker
+//   Parallel tracker 
 //
 //   Origin: 
 //-------------------------------------------------------
+
+#include <TError.h>
 #include "AliTracker.h"
-#include "AliTPCtrack.h"
-#include "TClonesArray.h"
-//#include "AliTPCClustersArray.h"
+#include "AliTPCreco.h"
+#include "AliPID.h"
+#include "AliTPCclusterMI.h"
+#include "AliTPCtrackerSector.h"
+
 
-#include "AliTPCreco.h" 
-#include "Rtypes.h"
-#include "AliComplexCluster.h"
 class TFile;
 class AliTPCParam;
 class AliTPCseed;
-class AliTPCclusterMI;
 class AliTPCTrackerPoint;
-class AliESD;   
+class AliESDEvent;   
 class TTree;
-
-
-class AliTPCseed : public AliTPCtrack {
-  public:
-     AliTPCseed();
-     virtual ~AliTPCseed();
-     AliTPCseed(const AliTPCtrack &t);
-     AliTPCseed(const AliKalmanTrack &t, Double_t a);
-     Int_t Compare(const TObject *o) const;
-     void Reset(Bool_t all = kTRUE);
-     Int_t GetProlongation(Double_t xr, Double_t &y, Double_t & z) const;
-     virtual Double_t GetPredictedChi2(const AliTPCclusterMI *cluster) const;
-     virtual Int_t Update(const AliTPCclusterMI* c, Double_t chi2, UInt_t i);
-     AliTPCTrackerPoint * GetTrackPoint(Int_t i);
-     void RebuildSeed(); // rebuild seed to be ready for storing
-     AliTPCseed(UInt_t index, const Double_t xx[5], 
-                const Double_t cc[15], Double_t xr, Double_t alpha);
-
-     Double_t GetDensityFirst(Int_t n);
-     Double_t GetSigma2C(){return fC44;}
-     void GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2);
-     
-     void Modify(Double_t factor);
-     void SetClusterIndex2(Int_t row, Int_t index){
-       fIndex[row] = index;
-     }
-     Int_t  GetClusterIndex2(Int_t row){
-       return fIndex[row];
-     }
-     Int_t GetClusterSector(Int_t row){
-       return fIndex[row]>=0 ? ((fIndex[row]&0xff000000)>>24) :-1;
-     }
-    
-     void SetErrorY2(Float_t sy2){fErrorY2=sy2;}
-     void SetErrorZ2(Float_t sz2){fErrorZ2=sz2;}
-     void CookdEdx(Double_t low=0.05, Double_t up=0.70, Int_t i1=0, Int_t i2=159, Bool_t onlyused = kFALSE);
-     //     void CookdEdx2(Double_t low=0.05, Double_t up=0.70);
-     Bool_t IsActive(){ return !(fRemoval);}
-     void Desactivate(Int_t reason){ fRemoval = reason;} 
-     //
-     //
-     AliTPCclusterMI*   fClusterPointer[160];  //! array of cluster pointers  - 
-     TClonesArray * fPoints;              // array with points along the track
-     TClonesArray * fEPoints;             // array with exact points - calculated in special macro not used in tracking
-     //---CURRENT VALUES
-     Int_t fRow;                 //!current row number  
-     Int_t fSector;              //!current sector number
-     Int_t fRelativeSector;      //! index of current relative sector
-     Float_t fCurrentSigmaY2;    //!expected current cluster sigma Y
-     Float_t fCurrentSigmaZ2;    //!expected current cluster sigma Z
-     Float_t fErrorY2;           //!sigma of current cluster 
-     Float_t fErrorZ2;           //!sigma of current cluster    
-     AliTPCclusterMI * fCurrentCluster; //!pointer to the current cluster for prolongation
-     Int_t   fCurrentClusterIndex1; //! index of the current cluster
-     Bool_t  fInDead;            //! indicate if the track is in dead zone
-     Bool_t  fIsSeeding;         //!indicates if it is proces of seeading
-     Int_t   fNoCluster;         //!indicates number of rows without clusters
-     Int_t   fSort;              //!indicate criteria for sorting
-     Bool_t  fBSigned;        //indicates that clusters of this trackes are signed to be used
-     //
-     //
-     Float_t fDEDX[4];         // dedx according padrows
-     Float_t fSDEDX[4];        // sdedx according padrows
-     Int_t   fNCDEDX[4];       // number of clusters for dedx measurment
-     //
-     Int_t   fSeedType;         //seeding type
-     Int_t   fSeed1;            //first row for seeding
-     Int_t   fSeed2;            //last row for seeding
-     Int_t   fOverlapLabels[12];  //track labels and the length of the  overlap     
-   private:
-     Float_t fMAngular;        // mean angular factor
-     AliTPCTrackerPoint  fTrackPoints[160];  //!track points - array track points
-   
-     ClassDef(AliTPCseed,1)  
-};
-
+class AliESDkink;
+class TTreeSRedirector;
+class AliTrackPoint;
 
 
 
 class AliTPCtrackerMI : public AliTracker {
 public:
-   AliTPCtrackerMI():AliTracker(),fkNIS(0),fkNOS(0) {
-      fInnerSec=fOuterSec=0; fSeeds=0; 
-   }
-   AliTPCtrackerMI(const AliTPCParam *par); 
-  ~AliTPCtrackerMI();
+  AliTPCtrackerMI();
+  AliTPCtrackerMI(const AliTPCParam *par); 
+  virtual ~AliTPCtrackerMI();
   //
-  //to be implemented later
-  virtual Int_t Clusters2Tracks (AliESD *){return 0;}
-  virtual Int_t RefitInward (AliESD *){return 0;}
-  virtual Int_t LoadClusters (TTree *){return 0;}
+  void SetIteration(Int_t iteration){fIteration = iteration;}
+  virtual Int_t Clusters2Tracks (AliESDEvent *esd);
+  virtual Int_t RefitInward (AliESDEvent *esd);
+  virtual Int_t LoadClusters (TTree * tree);
+  virtual Int_t LoadClusters (TObjArray * arr); // another input
+  virtual Int_t LoadClusters (TClonesArray * arr); // another input
+  Int_t  LoadClusters();
+  void   UnloadClusters();
+  Int_t LoadInnerSectors();
+  Int_t LoadOuterSectors();
+  virtual void FillClusterArray(TObjArray* array) const;
+  void   Transform(AliTPCclusterMI * cluster);
   //
-  void SetIO();  //set default IO from folders
-  void SetIO(TTree * input, TTree * output, AliESD * event);
-  void WriteTracks();
+  void FillESD(TObjArray* arr);
   void DeleteSeeds();
   void SetDebug(Int_t debug){ fDebug = debug;}
+  void FindKinks(TObjArray * array, AliESDEvent * esd);
+  //
+  void FindCurling(TObjArray * array, AliESDEvent * esd, Int_t iter);     
+  void FindSplitted(TObjArray * array, AliESDEvent * esd, Int_t iter);       
+  void FindMultiMC(TObjArray * array, AliESDEvent * esd, Int_t iter);     
+  //
+  void FindV0s(TObjArray * array, AliESDEvent * esd);
+  void UpdateKinkQualityM(AliTPCseed * seed);
+  void UpdateKinkQualityD(AliTPCseed * seed);
+  Int_t CheckKinkPoint(AliTPCseed*seed, AliTPCseed &mother, AliTPCseed &daughter, AliESDkink &kink);
+  Int_t RefitKink(AliTPCseed &mother, AliTPCseed &daughter, AliESDkink &kink);
    Int_t ReadSeeds(const TFile *in);
-   Int_t  LoadClusters();
-   void   UnloadClusters();
    TObjArray * GetSeeds(){return fSeeds;}
    //   
-   AliCluster * GetCluster (int) const {return 0;}
+   AliCluster * GetCluster(Int_t index) const {return (AliCluster*)GetClusterMI(index);}
    AliTPCclusterMI *GetClusterMI(Int_t index) const;
-   Int_t Clusters2Tracks(const TFile *in, TFile *out){return 0;}
    Int_t Clusters2Tracks();
-   virtual void  CookLabel(AliTPCseed *t,Float_t wrong) const; 
+   virtual void  CookLabel(AliKalmanTrack *tk,Float_t wrong) const; 
+   virtual Int_t   CookLabel(AliTPCseed *t,Float_t wrong, Int_t first,Int_t last ) const; 
    
    void RotateToLocal(AliTPCseed *seed);
-  
    
    Int_t FollowProlongation(AliTPCseed& t, Int_t rf=0, Int_t step=1);
-   Int_t FollowProlongationFast(AliTPCseed& t, Int_t rf=0, Int_t step=1);
-   
+   Bool_t GetTrackPoint(Int_t index, AliTrackPoint &p ) const; 
+
    Int_t FollowBackProlongation(AliTPCseed& t, Int_t rf);
    Int_t FollowToNext(AliTPCseed& t, Int_t nr);
-   Int_t FollowToNextFast(AliTPCseed& t, Int_t nr);
    Int_t UpdateClusters(AliTPCseed& t,  Int_t nr);
    Int_t FollowToNextCluster( AliTPCseed& t, Int_t nr);
 
-   virtual Int_t PropagateBack (const TFile *, TFile *){return 0;}
    Int_t PropagateBack(TObjArray * arr);
-   Int_t PropagateBack(AliESD * event);
+   Int_t PropagateBack(AliESDEvent * event);
    Int_t PropagateBack(AliTPCseed *pt, Int_t row0, Int_t row1);   
    Int_t PropagateForward();
    Int_t PropagateForward2(TObjArray * arr);
 
-   Int_t CheckKinkPoint(AliTPCseed*seed, Float_t th);
-   void SortTracks(TObjArray * arr, Int_t mode);
+   void SortTracks(TObjArray * arr, Int_t mode) const;
   
-
    virtual Double_t ErrY2(AliTPCseed* seed, AliTPCclusterMI * cl = 0);
    virtual Double_t ErrZ2(AliTPCseed* seed, AliTPCclusterMI * cl = 0);   
 
-   Double_t f1(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
-   Double_t f1old(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
-   Double_t f2(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
-   Double_t f2old(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
+   Double_t F1(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
+   Double_t F1old(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
+   Double_t F2(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
+   Double_t F2old(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t x3,Double_t y3); 
 
-   Double_t f3(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t z1,Double_t z2); 
-   Double_t f3n(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t z1,Double_t z2, 
+   Double_t F3(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t z1,Double_t z2); 
+   Double_t F3n(Double_t x1,Double_t y1, Double_t x2,Double_t y2, Double_t z1,Double_t z2, 
                 Double_t c); 
    Bool_t GetProlongation(Double_t x1, Double_t x2, Double_t x[5], Double_t &y, Double_t &z);
 
-public:
-//**************** Internal tracker class ********************** 
-   class AliTPCRow {
-   public:
-     AliTPCRow() {fN=0;}
-     ~AliTPCRow();
-     void InsertCluster(const AliTPCclusterMI *c, UInt_t index);
-     operator int() const {return fN;}
-     Int_t GetN() const {return fN;}
-     const AliTPCclusterMI* operator[](Int_t i) const {return fClusters[i];}
-     UInt_t GetIndex(Int_t i) const {return fIndex[i];}
-     inline Int_t Find(Double_t z) const; 
-     AliTPCclusterMI *  FindNearest(Double_t y, Double_t z, Double_t roady, Double_t roadz) const;
-     AliTPCclusterMI *  FindNearest2(Double_t y, Double_t z, Double_t roady, Double_t roadz, UInt_t & index) const;
-     AliTPCclusterMI *  FindNearest3(Double_t y, Double_t z, Double_t roady, Double_t roadz, UInt_t & index) const;
-     
-     void SetX(Double_t x) {fX=x;}
-     Double_t GetX() const {return fX;}
-     Float_t fDeadZone;  // the width of the dead zone
-     //     void RebuildRow(){;}
-//
-     AliTPCclusterMI *fClusters1; //array with clusters 1
-     Int_t fN1;  
-     AliTPCclusterMI *fClusters2; //array with clusters 2
-     Int_t fN2;
-     Short_t fFastCluster[510];   
-   private:
-     Int_t fN;                                          //number of clusters 
-     const AliTPCclusterMI *fClusters[kMaxClusterPerRow]; //pointers to clusters
-                               // indexes for cluster at given position z  
-     // AliTPCclusterMI *fClustersArray;                     // 
-     UInt_t fIndex[kMaxClusterPerRow];                  //indeces of clusters
-     Double_t fX;                                 //X-coordinate of this row
-   //private:
-     AliTPCRow(const AliTPCRow& r);            //dummy copy constructor
-     AliTPCRow &operator=(const AliTPCRow& r); //dummy assignment operator
-   };
-
-//**************** Internal tracker class ********************** 
-   class AliTPCSector {
-   public:
-     AliTPCSector() { fN=0; fRow = 0; }
-    ~AliTPCSector() { delete[] fRow; }
-     AliTPCRow& operator[](Int_t i) const { return *(fRow+i); }
-     Int_t GetNRows() const { return fN; }
-     void Setup(const AliTPCParam *par, Int_t flag);
-     Double_t GetX(Int_t l) const {return fRow[l].GetX();}
-     Double_t GetMaxY(Int_t l) const {
-         return GetX(l)*TMath::Tan(0.5*GetAlpha());
-     } 
-     Double_t GetAlpha() const {return fAlpha;}
-     Double_t GetAlphaShift() const {return fAlphaShift;}     
-     //Int_t GetFirst(){return fFirstRow;}
-     Int_t GetRowNumber(Double_t x) const {
-        //return pad row number for this x
-       Double_t r;
-       if (fN < 64){
-         r=fRow[fN-1].GetX();
-         if (x > r) return fN;
-         r=fRow[0].GetX();
-         if (x < r) return -1;
-         return Int_t((x-r)/fPadPitchLength + 0.5);}
-       else{    
-           r=fRow[fN-1].GetX();
-           if (x > r) return fN;
-           r=fRow[0].GetX();
-           if (x < r) return -1;
-          Double_t r1=fRow[64].GetX();
-          if(x<r1){       
-            return Int_t((x-r)/f1PadPitchLength + 0.5);}
-          else{
-            return (Int_t((x-r1)/f2PadPitchLength + 0.5)+64);} 
-       }
-     }
-     Double_t GetPadPitchWidth()  const {return fPadPitchWidth;}
-     Double_t GetPadPitchLength() const {return fPadPitchLength;}
-     Double_t GetPadPitchLength(Float_t x) const {return (x<200) ? fPadPitchLength:f2PadPitchLength ;}
-
-   private:
-     Int_t fN;                        //number of pad rows 
-     //Int_t fFirstRow;                 //offset
-     AliTPCRow *fRow;                    //array of pad rows
-     Double_t fAlpha;                    //opening angle
-     Double_t fAlphaShift;               //shift angle;
-     Double_t fPadPitchWidth;            //pad pitch width
-     Double_t fPadPitchLength;           //pad pitch length
-     Double_t f1PadPitchLength;           //pad pitch length
-     Double_t f2PadPitchLength;           //pad pitch length
-    
-   private:
-     AliTPCSector(const AliTPCSector &s);           //dummy copy contructor
-     AliTPCSector& operator=(const AliTPCSector &s);//dummy assignment operator
-   };
+ public:
+
 
    Float_t OverlapFactor(AliTPCseed * s1, AliTPCseed * s2, Int_t &sum1, Int_t &sum2);
    void  SignShared(AliTPCseed * s1, AliTPCseed * s2);
    void  SignShared(TObjArray * arr);
 
-   void  RemoveUsed(TObjArray * arr, Float_t factor1, Float_t factor2,  Int_t removalindex);
-   void  RemoveDouble(TObjArray * arr, Float_t factor1, Float_t factor2,  Int_t removalindex);
+   void  RemoveUsed2(TObjArray * arr, Float_t factor1, Float_t factor2, Int_t minimal);
 
-   void  StopNotActive(TObjArray * arr, Int_t row0, Float_t th0, Float_t th1, Float_t th2);
-   void  StopNotActive(AliTPCseed * seed, Int_t row0, Float_t th0, Float_t th1, Float_t th2);
-   Int_t AcceptCluster(AliTPCseed * seed, AliTPCclusterMI * cluster, Float_t factor, Float_t cory=1., Float_t corz=1.);
+   void  StopNotActive(TObjArray * arr, Int_t row0, Float_t th0, Float_t th1, Float_t th2) const;
+   void  StopNotActive(AliTPCseed * seed, Int_t row0, Float_t th0, Float_t th1, Float_t th2) const;
+   Int_t AcceptCluster(AliTPCseed * seed, AliTPCclusterMI * cluster);
 
 private:
-   inline AliTPCRow &GetRow(Int_t sec, Int_t row);
-   inline Double_t  GetXrow(Int_t row);
-   inline Double_t  GetMaxY(Int_t row);
-   inline Int_t GetRowNumber(Double_t x);
-   inline Double_t GetPadPitchLength(Double_t x);
-   inline Double_t GetPadPitchLength(Int_t row);
-
-   Float_t  GetSigmaY(AliTPCseed * seed);
-   Float_t  GetSigmaZ(AliTPCseed * seed);
-   void GetShape(AliTPCseed * seed, Int_t row);
+  Bool_t IsFindable(AliTPCseed & t);
+  AliTPCtrackerMI(const AliTPCtrackerMI& r);           //dummy copy constructor
+  AliTPCtrackerMI &operator=(const AliTPCtrackerMI& r);//dummy assignment operator
+  void AddCovariance(AliTPCseed * seed);               // add covariance
+
+   inline AliTPCtrackerRow &GetRow(Int_t sec, Int_t row);
+   inline Bool_t     IsActive(Int_t sec, Int_t row);
+   inline Double_t  GetXrow(Int_t row) const;
+   inline Double_t  GetMaxY(Int_t row) const;
+   inline Int_t GetRowNumber(Double_t x) const;
+   Int_t GetRowNumber(Double_t x[3]) const;
+   inline Double_t GetPadPitchLength(Double_t x) const;
+   inline Double_t GetPadPitchLength(Int_t row) const;
+
+    void GetShape(AliTPCseed * seed, Int_t row);
  
-   void ReadSeeds(AliESD *event);  //read seeds from the event
+   void ReadSeeds(AliESDEvent *event, Int_t direction);  //read seeds from the event
 
    void MakeSeeds3(TObjArray * arr, Int_t sec, Int_t i1, Int_t i2, Float_t cuts[4], Float_t deltay = -1, Int_t ddsec=0); 
    void MakeSeeds5(TObjArray * arr, Int_t sec, Int_t i1, Int_t i2, Float_t cuts[4], Float_t deltay = -1);
@@ -296,12 +145,14 @@ private:
   
 
    AliTPCseed *MakeSeed(AliTPCseed *t, Float_t r0, Float_t r1, Float_t r2); //reseed
+   AliTPCseed *ReSeed(AliTPCseed *t, Float_t r0, Float_t r1, Float_t r2); //reseed
+   AliTPCseed *ReSeed(AliTPCseed *t, Int_t r0, Bool_t forward); //reseed
 
 
   
    AliTPCseed * ReSeed(AliTPCseed *t);
-   Int_t LoadInnerSectors();
-   Int_t LoadOuterSectors();
+   //Int_t LoadInnerSectors();
+   //Int_t LoadOuterSectors();
    void UnsignClusters();
    void SignClusters(TObjArray * arr, Float_t fnumber=3., Float_t fdensity=2.);  
 
@@ -309,30 +160,29 @@ private:
    void Tracking(TObjArray * arr);
    TObjArray * Tracking(Int_t seedtype, Int_t i1, Int_t i2, Float_t cuts[4], Float_t dy=-1, Int_t dsec=0);
    TObjArray * Tracking();
-   void SumTracks(TObjArray *arr1,TObjArray *arr2);
-   void PrepareForBackProlongation(TObjArray * arr, Float_t fac);
-   void PrepareForProlongation(TObjArray * arr, Float_t fac);
+   TObjArray * TrackingSpecial();
+   void SumTracks(TObjArray *arr1,TObjArray *&arr2) const;
+   void PrepareForBackProlongation(TObjArray * arr, Float_t fac) const;
+   void PrepareForProlongation(TObjArray * arr, Float_t fac) const;
 
-   void SetSampledEdx(AliTPCseed *t, Float_t q, Int_t i) {;}
+   void SetSampledEdx(AliTPCseed */*t*/, Float_t /*q*/, Int_t /*i*/) {;}
    Int_t UpdateTrack(AliTPCseed *t, Int_t accept); //update trackinfo
 
-
-   AliTPCtrackerMI(const AliTPCtrackerMI& r);           //dummy copy constructor
-   AliTPCtrackerMI &operator=(const AliTPCtrackerMI& r);//dummy assignment operator
+   void MakeBitmaps(AliTPCseed *t);
 
    const Int_t fkNIS;        //number of inner sectors
-   AliTPCSector *fInnerSec;  //array of inner sectors;
+   AliTPCtrackerSector *fInnerSec;  //array of inner sectors;
    const Int_t fkNOS;        //number of outer sectors
-   AliTPCSector *fOuterSec;  //array of outer sectors;
+   AliTPCtrackerSector *fOuterSec;  //array of outer sectors;
 
    Int_t fN;               //number of loaded sectors
-   AliTPCSector *fSectors; //pointer to loaded sectors;
+   AliTPCtrackerSector *fSectors; //pointer to loaded sectors;
    //
    TTree * fInput;       // input tree with clusters
    TTree * fOutput;      // output tree with tracks
    TTree * fSeedTree;    // output tree with seeds - filled in debug mode 1
    TTree * fTreeDebug;   // output with a debug information about track
-   AliESD * fEvent;      // output with esd tracks
+   AliESDEvent * fEvent;      // output with esd tracks
    Int_t    fDebug;      // debug option        
    Bool_t   fNewIO;      // indicated if we have data using New IO 
    Int_t fNtracks;                     //current number of tracks
@@ -344,40 +194,50 @@ private:
    Double_t fYMax[200];                // max y for given pad row
    Double_t fPadLength[200];                // max y for given pad row
    const AliTPCParam *fParam;          //pointer to the parameters
-   ClassDef(AliTPCtrackerMI,1) 
+   TTreeSRedirector *fDebugStreamer;     //!debug streamer
+   ClassDef(AliTPCtrackerMI,2) 
 };
 
 
-AliTPCtrackerMI::AliTPCRow & AliTPCtrackerMI::GetRow(Int_t sec, Int_t row)
+AliTPCtrackerRow & AliTPCtrackerMI::GetRow(Int_t sec, Int_t row)
 {
   //
   return (row>=fInnerSec->GetNRows()) ? fOuterSec[sec][row-fInnerSec->GetNRows()]:fInnerSec[sec][row];
 }
 
-Double_t  AliTPCtrackerMI::GetXrow(Int_t row) {
+Bool_t   AliTPCtrackerMI::IsActive(Int_t sec, Int_t row)
+{
+  //
+  // check if the given sector row is active 
+  //
+  return (row>=fInnerSec->GetNRows()) ? fOuterSec[sec][row-fInnerSec->GetNRows()].GetN()>0:fInnerSec[sec][row].GetN()>0;
+}
+
+
+Double_t  AliTPCtrackerMI::GetXrow(Int_t row) const {
   //  return (row>=fInnerSec->GetNRows()) ? fOuterSec->GetX(row-fInnerSec->GetNRows()):fInnerSec->GetX(row);
   return fXRow[row];
 }
 
-Double_t  AliTPCtrackerMI::GetMaxY(Int_t row)  {
+Double_t  AliTPCtrackerMI::GetMaxY(Int_t row) const {
   //return (row>=fInnerSec->GetNRows()) ? fOuterSec->GetMaxY(row-fInnerSec->GetNRows()):fInnerSec->GetMaxY(row);
   return fYMax[row];
 }
 
-Int_t AliTPCtrackerMI::GetRowNumber(Double_t x)
+Int_t AliTPCtrackerMI::GetRowNumber(Double_t x) const
 {
   //
   return (x>133.) ? fOuterSec->GetRowNumber(x)+fInnerSec->GetNRows():fInnerSec->GetRowNumber(x);
 }
 
-Double_t  AliTPCtrackerMI::GetPadPitchLength(Double_t x)
+Double_t  AliTPCtrackerMI::GetPadPitchLength(Double_t x) const
 {
   //
   return (x>133.) ? fOuterSec->GetPadPitchLength(x):fInnerSec->GetPadPitchLength(x);
   //return fPadLength[row];
 }
 
-Double_t  AliTPCtrackerMI::GetPadPitchLength(Int_t row)
+Double_t  AliTPCtrackerMI::GetPadPitchLength(Int_t row) const
 {
   //
   return fPadLength[row];