////////////////////////////////////////////////////////////////////////////
// //
-// The TRD track seed //
+// The TRD offline tracklet //
// //
////////////////////////////////////////////////////////////////////////////
-#ifndef ALITRDSEED_H
-#include "AliTRDseed.h"
+#ifndef ALITRDTRACKLETBASE_H
+#include "AliTRDtrackletBase.h"
+#endif
+
+#ifndef ROOT_TMath
+#include "TMath.h"
+#endif
+
+#ifndef ALITRDGEOMETRY_H
+#include "AliTRDgeometry.h"
#endif
#ifndef ALIPID_H
#include "AliRieman.h"
#endif
+#ifndef ALITRDCLUSTER_H
+#include "AliTRDcluster.h"
+#endif
+
+#include "AliTRDReconstructor.h"
+
class TTreeSRedirector;
+class TLinearFitter;
class AliRieman;
class AliTRDtrackingChamber;
-class AliTRDcluster;
class AliTRDtrackV1;
-class AliTRDReconstructor;
-class AliTRDseedV1 : public AliTRDseed
+class AliTRDpadPlane;
+class AliTRDseedV1 : public AliTRDtrackletBase
{
-
- public:
-
- enum {
- knSlices = 10
+public:
+ enum ETRDtrackletBuffers {
+ kNtb = 31 // max clusters/pad row
+ ,kNclusters = 2*kNtb // max number of clusters/tracklet
+ ,kNslices = 10 // max dEdx slices
};
- enum AliTRDtrackletStatus {
- kOwner = BIT(1)
- , kRowCross = BIT(2)
+
+ // bits from 0-13 are reserved by ROOT (see TObject.h)
+ enum ETRDtrackletStatus {
+ kOwner = BIT(14) // owner of its clusters
+ ,kRowCross = BIT(15) // pad row cross tracklet
+ ,kPID = BIT(16) // PID contributor
+ ,kCalib = BIT(17) // calibrated tracklet
+ ,kKink = BIT(18) // kink prolongation tracklet
+ ,kStandAlone = BIT(19) // tracklet build during stand alone track finding
};
- AliTRDseedV1(Int_t plane = -1);
+ AliTRDseedV1(Int_t det = -1);
~AliTRDseedV1();
AliTRDseedV1(const AliTRDseedV1 &ref);
AliTRDseedV1& operator=(const AliTRDseedV1 &ref);
- Bool_t AttachClustersIter(AliTRDtrackingChamber *chamber, Float_t quality, Bool_t kZcorr = kFALSE
- , AliTRDcluster *c=0x0);
- Bool_t AttachClusters(AliTRDtrackingChamber *chamber, Bool_t kZcorr = kFALSE);
- void CookdEdx(Int_t nslices);
- void Draw(Option_t* o = "");
- Bool_t Fit();
-
- Bool_t Init(AliTRDtrackV1 *track);
+ Bool_t AttachClusters(AliTRDtrackingChamber *const chamber, Bool_t tilt = kFALSE);
+ void Bootstrap(const AliTRDReconstructor *rec);
+ void Calibrate();
+ void CookdEdx(Int_t nslices);
+ void CookLabels();
+ Bool_t CookPID();
+ Bool_t Fit(Bool_t tilt=kFALSE, Bool_t zcorr=kFALSE);
+ Bool_t Init(AliTRDtrackV1 *track);
inline void Init(const AliRieman *fit);
+ Bool_t IsEqual(const TObject *inTracklet) const;
+ Bool_t IsCalibrated() const { return TestBit(kCalib);}
Bool_t IsOwner() const { return TestBit(kOwner);}
+ Bool_t IsKink() const { return TestBit(kKink);}
+ Bool_t HasPID() const { return TestBit(kPID);}
+ Bool_t IsOK() const { return GetN() > 4 && GetNUsed() < 4;}
Bool_t IsRowCross() const { return TestBit(kRowCross);}
+ Bool_t IsUsable(Int_t i) const { return fClusters[i] && !fClusters[i]->IsUsed();}
+ Bool_t IsStandAlone() const { return TestBit(kStandAlone);}
- inline Float_t GetChi2Z(const Float_t z = 999.) const;
- inline Float_t GetChi2Y(const Float_t y = 999.) const;
+ Float_t GetC() const { return fC; }
+ Float_t GetChi2() const { return fChi2; }
+ inline Float_t GetChi2Z() const;
+ inline Float_t GetChi2Y() const;
+ inline Float_t GetChi2Phi() const;
void GetCovAt(Double_t x, Double_t *cov) const;
- Double_t* GetCrossXYZ() { return &fCross[0];}
- Double_t GetCrossSz2() const { return fCross[3];}
- Float_t* GetdEdx() {return &fdEdx[0];}
- Float_t GetdQdl(Int_t ic) const;
- Double_t GetMomentum() const {return fMom;}
- Int_t GetN() const {return fN2;}
+ void GetCovXY(Double_t *cov) const { memcpy(cov, &fCov[0], 3*sizeof(Double_t));}
+ void GetCovRef(Double_t *cov) const { memcpy(cov, &fRefCov, 7*sizeof(Double_t));}
+ static Double_t GetCovSqrt(const Double_t * const c, Double_t *d);
+ static Double_t GetCovInv(const Double_t * const c, Double_t *d);
+ Float_t GetdX() const { return fdX;}
+ const Float_t* GetdEdx() const { return &fdEdx[0];}
+ Float_t GetdQdl(Int_t ic, Float_t *dx=NULL) const;
+ Float_t GetdYdX() const { return fYfit[1]; }
+ Float_t GetdZdX() const { return fZref[1]; }
+ Int_t GetdY() const { return Int_t(GetY()/0.014);}
+ Int_t GetDetector() const { return fDet;}
+ void GetCalibParam(Float_t &exb, Float_t &vd, Float_t &t0, Float_t &s2, Float_t &dl, Float_t &dt) const {
+ exb = fExB; vd = fVD; t0 = fT0; s2 = fS2PRF; dl = fDiffL; dt = fDiffT;}
+ AliTRDcluster* GetClusters(Int_t i) const { return i<0 || i>=kNclusters ? NULL: fClusters[i];}
+ static TLinearFitter* GetFitterY();
+ static TLinearFitter* GetFitterZ();
+ Int_t GetIndexes(Int_t i) const{ return i<0 || i>=kNclusters ? -1 : fIndexes[i];}
+ Int_t GetLabels(Int_t i) const { return fLabels[i];}
+ Float_t GetMomentum(Float_t *err = NULL) const;
+ Int_t GetN() const { return (Int_t)fN&0x1f;}
+ Int_t GetN2() const { return GetN();}
+ Int_t GetNUsed() const { return Int_t((fN>>5)&0x1f);}
+ Int_t GetNShared() const { return Int_t((fN>>10)&0x1f);}
Float_t GetQuality(Bool_t kZcorr) const;
- Int_t GetPlane() const { return fPlane; }
- Double_t* GetProbability();
- Double_t GetSnp() const { return fSnp;}
- Double_t GetTgl() const { return fTgl;}
- Double_t GetYat(Double_t x) const { return fYfitR[0] + fYfitR[1] * (x - fX0);}
- Double_t GetZat(Double_t x) const { return fZfitR[0] + fZfitR[1] * (x - fX0);}
-
+ Float_t GetPadLength() const { return fPad[0];}
+ Float_t GetPadWidth() const { return fPad[1];}
+ Int_t GetPlane() const { return AliTRDgeometry::GetLayer(fDet); }
+
+ Float_t* GetProbability(Bool_t force=kFALSE);
+ Float_t GetPt() const { return fPt; }
+ inline Double_t GetPID(Int_t is=-1) const;
+ Float_t GetS2Y() const { return fS2Y;}
+ Float_t GetS2Z() const { return fS2Z;}
+ Float_t GetSigmaY() const { return fS2Y > 0. ? TMath::Sqrt(fS2Y) : 0.2;}
+ Float_t GetSnp() const { return fYref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
+ Float_t GetTgl() const { return fZref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
+ Float_t GetTilt() const { return fPad[2];}
+ UInt_t GetTrackletWord() const { return 0;}
+ UShort_t GetVolumeId() const;
+ Float_t GetX0() const { return fX0;}
+ Float_t GetX() const { return fX0 - fX;}
+ Float_t GetY() const { return fYfit[0] - fYfit[1] * fX;}
+ Double_t GetYat(Double_t x) const { return fYfit[0] - fYfit[1] * (fX0-x);}
+ Float_t GetYfit(Int_t id) const { return fYfit[id];}
+ Float_t GetYref(Int_t id) const { return fYref[id];}
+ Float_t GetZ() const { return fZfit[0] - fZfit[1] * fX;}
+ Double_t GetZat(Double_t x) const { return fZfit[0] - fZfit[1] * (fX0-x);}
+ Float_t GetZfit(Int_t id) const { return fZfit[id];}
+ Float_t GetZref(Int_t id) const { return fZref[id];}
+ Int_t GetYbin() const { return Int_t(GetY()/0.016);}
+ Int_t GetZbin() const { return Int_t(GetZ()/fPad[0]);}
+
+ inline AliTRDcluster* NextCluster();
+ inline AliTRDcluster* PrevCluster();
void Print(Option_t *o = "") const;
-
- void SetMomentum(Double_t mom) {fMom = mom;}
- void SetOwner(Bool_t own = kTRUE);
- void SetPlane(Int_t p) { fPlane = p; }
- void SetSnp(Double_t snp) {fSnp = snp;}
- void SetTgl(Double_t tgl) {fTgl = tgl;}
- void SetReconstructor(const AliTRDReconstructor *rec) {fReconstructor = rec;}
-protected:
+ inline void ResetClusterIter(Bool_t forward = kTRUE);
+ void Reset();
- void Copy(TObject &ref) const;
+ void SetC(Float_t c) { fC = c;}
+ void SetChi2(Float_t chi2) { fChi2 = chi2;}
+ inline void SetCovRef(const Double_t *cov);
+ void SetIndexes(Int_t i, Int_t idx) { fIndexes[i] = idx; }
+ void SetLabels(Int_t *lbls) { memcpy(fLabels, lbls, 3*sizeof(Int_t)); }
+ void SetKink(Bool_t k = kTRUE){ SetBit(kKink, k);}
+ void SetPID(Bool_t k = kTRUE) { SetBit(kPID, k);}
+ void SetStandAlone(Bool_t st) { SetBit(kStandAlone, st); }
+ void SetPt(Double_t pt) { fPt = pt;}
+ void SetOwner();
+ void SetPadPlane(AliTRDpadPlane *p);
+ void SetPadLength(Float_t l) { fPad[0] = l;}
+ void SetPadWidth(Float_t w) { fPad[1] = w;}
+ void SetTilt(Float_t tilt) { fPad[2] = tilt; }
+ void SetDetector(Int_t d) { fDet = d; }
+ void SetDX(Float_t inDX) { fdX = inDX;}
+ void SetReconstructor(const AliTRDReconstructor *rec) {fkReconstructor = rec;}
+ void SetX0(Float_t x0) { fX0 = x0; }
+ void SetYref(Int_t i, Float_t y) { fYref[i] = y;}
+ void SetZref(Int_t i, Float_t z) { fZref[i] = z;}
+// void SetUsabilityMap(Long_t um) { fUsable = um; }
+ void Update(const AliTRDtrackV1* trk);
+ void UpdateUsed();
+ void UseClusters();
+
+protected:
+ void Copy(TObject &ref) const;
private:
- const AliTRDReconstructor *fReconstructor;
- Int_t fPlane; // TRD plane
- Float_t fMom; // Momentum estimate for tracklet [GeV/c]
- Float_t fSnp; // sin of track with respect to x direction in XY plane
- Float_t fTgl; // tg of track with respect to x direction in XZ plane
- Float_t fdX; // length of time bin
- Float_t fdEdx[knSlices]; // dE/dx measurements for tracklet
- Double_t fCross[4]; // spatial parameters of the pad row crossing
- Double_t fProb[AliPID::kSPECIES]; // PID probabilities
+ inline void SetN(Int_t n);
+ inline void SetNUsed(Int_t n);
+ inline void SetNShared(Int_t n);
- ClassDef(AliTRDseedV1, 1) // New TRD seed
+ const AliTRDReconstructor *fkReconstructor;//! local reconstructor
+ AliTRDcluster **fClusterIter; //! clusters iterator
+ Int_t fIndexes[kNclusters]; //! Indexes
+ Float_t fExB; //! tg(a_L) @ tracklet location
+ Float_t fVD; //! drift velocity @ tracklet location
+ Float_t fT0; //! time 0 @ tracklet location
+ Float_t fS2PRF; //! sigma^2 PRF for xd->0 and phi=a_L
+ Float_t fDiffL; //! longitudinal diffusion coefficient
+ Float_t fDiffT; //! transversal diffusion coefficient
+ Char_t fClusterIdx; //! clusters iterator
+ UShort_t fN; // number of clusters attached/used/shared
+ Short_t fDet; // TRD detector
+ AliTRDcluster *fClusters[kNclusters]; // Clusters
+ Float_t fPad[3]; // local pad definition : length/width/tilt
+ Float_t fYref[2]; // Reference y, dydx
+ Float_t fZref[2]; // Reference z, dz/dx
+ Float_t fYfit[2]; // Fit y, dy/dx
+ Float_t fZfit[2]; // Fit z
+ Float_t fPt; // Pt estimate @ tracklet [GeV/c]
+ Float_t fdX; // length of time bin
+ Float_t fX0; // anode wire position
+ Float_t fX; // radial position of the tracklet
+ Float_t fY; // r-phi position of the tracklet
+ Float_t fZ; // z position of the tracklet
+ Float_t fS2Y; // estimated resolution in the r-phi direction
+ Float_t fS2Z; // estimated resolution in the z direction
+ Float_t fC; // Curvature
+ Float_t fChi2; // Global chi2
+ Float_t fdEdx[kNslices]; // dE/dx measurements for tracklet
+ Float_t fProb[AliPID::kSPECIES]; // PID probabilities
+ Int_t fLabels[3]; // most frequent MC labels and total number of different labels
+ Double_t fRefCov[7]; // covariance matrix of the track in the yz plane + the rest of the diagonal elements
+ Double_t fCov[3]; // covariance matrix of the tracklet in the xy plane
+ static TLinearFitter *fgFitterY; // Linear Fitter for tracklet fit in xy-plane
+ static TLinearFitter *fgFitterZ; // Linear Fitter for tracklet fit in xz-plane
+ ClassDef(AliTRDseedV1, 7) // The offline TRD tracklet
};
//____________________________________________________________
-inline Float_t AliTRDseedV1::GetChi2Z(const Float_t z) const
+inline Float_t AliTRDseedV1::GetChi2Z() const
+{
+ Double_t dz = fZref[0]-fZfit[0]; dz*=dz;
+ Double_t cov[3]; GetCovAt(fX, cov);
+ Double_t s2 = fRefCov[2]+cov[2];
+ return s2 > 0. ? dz/s2 : 0.;
+}
+
+//____________________________________________________________
+inline Float_t AliTRDseedV1::GetChi2Y() const
{
- Float_t z1 = (z == 999.) ? fMeanz : z;
- Float_t chi = fZref[0] - z1;
- return chi*chi;
+ Double_t dy = fYref[0]-fYfit[0]; dy*=dy;
+ Double_t cov[3]; GetCovAt(fX, cov);
+ Double_t s2 = fRefCov[0]+cov[0];
+ return s2 > 0. ? dy/s2 : 0.;
}
//____________________________________________________________
-inline Float_t AliTRDseedV1::GetChi2Y(const Float_t y) const
+inline Float_t AliTRDseedV1::GetChi2Phi() const
{
- Float_t y1 = (y == 999.) ? fYfitR[0] : y;
- Float_t chi = fYref[0] - y1;
- return chi*chi;
+ Double_t dphi = fYref[1]-fYfit[1]; dphi*=dphi;
+ Double_t cov[3]; GetCovAt(fX, cov);
+ Double_t s2 = fRefCov[2]+cov[2];
+ return s2 > 0. ? dphi/s2 : 0.;
+}
+
+
+
+//____________________________________________________________
+inline Double_t AliTRDseedV1::GetPID(Int_t is) const
+{
+ if(is<0) return fProb[AliPID::kElectron];
+ if(is<AliPID::kSPECIES) return fProb[is];
+ return 0.;
}
//____________________________________________________________
fZref[1] = rieman->GetDZat(fX0);
fYref[0] = rieman->GetYat(fX0);
fYref[1] = rieman->GetDYat(fX0);
+ if(fkReconstructor && fkReconstructor->IsHLT()){
+ fRefCov[0] = 1;
+ fRefCov[2] = 10;
+ }else{
+ fRefCov[0] = rieman->GetErrY(fX0);
+ fRefCov[2] = rieman->GetErrZ(fX0);
+ }
+ fC = rieman->GetC();
+ fChi2 = rieman->GetChi2();
}
+//____________________________________________________________
+inline AliTRDcluster* AliTRDseedV1::NextCluster()
+{
+// Mimic the usage of STL iterators.
+// Forward iterator
+
+ fClusterIdx++; fClusterIter++;
+ while(fClusterIdx < kNclusters){
+ if(!(*fClusterIter)){
+ fClusterIdx++;
+ fClusterIter++;
+ continue;
+ }
+ return *fClusterIter;
+ }
+ return NULL;
+}
+
+//____________________________________________________________
+inline AliTRDcluster* AliTRDseedV1::PrevCluster()
+{
+// Mimic the usage of STL iterators.
+// Backward iterator
+
+ fClusterIdx--; fClusterIter--;
+ while(fClusterIdx >= 0){
+ if(!(*fClusterIter)){
+ fClusterIdx--;
+ fClusterIter--;
+ continue;
+ }
+ return *fClusterIter;
+ }
+ return NULL;
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::ResetClusterIter(Bool_t forward)
+{
+// Mimic the usage of STL iterators.
+// Facilitate the usage of NextCluster for forward like
+// iterator (kTRUE) and PrevCluster for backward like iterator (kFALSE)
+
+ if(forward){
+ fClusterIter = &fClusters[0]; fClusterIter--;
+ fClusterIdx=-1;
+ } else {
+ fClusterIter = &fClusters[kNclusters-1]; fClusterIter++;
+ fClusterIdx=kNclusters;
+ }
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetCovRef(const Double_t *cov)
+{
+// Copy some "important" covariance matrix elements
+// var(y)
+// cov(y,z) var(z)
+// var(snp)
+// var(tgl)
+// cov(tgl, 1/pt) var(1/pt)
+
+ memcpy(&fRefCov[0], cov, 3*sizeof(Double_t)); // yz full covariance
+ fRefCov[3] = cov[ 5]; // snp variance
+ fRefCov[4] = cov[ 9]; // tgl variance
+ fRefCov[5] = cov[13]; // cov(tgl, 1/pt)
+ fRefCov[6] = cov[14]; // 1/pt variance
+}
+
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetN(Int_t n)
+{
+ if(n<0 || n>= (1<<5)) return;
+ fN &= ~0x1f;
+ fN |= n;
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetNUsed(Int_t n)
+{
+ if(n<0 || n>= (1<<5)) return;
+ fN &= ~(0x1f<<5);
+ n <<= 5; fN |= n;
+}
+
+//____________________________________________________________
+inline void AliTRDseedV1::SetNShared(Int_t n)
+{
+ if(n<0 || n>= (1<<5)) return;
+ fN &= ~(0x1f<<10);
+ n <<= 10; fN |= n;
+}
+
+
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff