#include "AliExternalTrackParam.h"
#include "AliITSUAux.h"
+class AliESDtrack;
+
using namespace AliITSUAux;
class AliITSUSeed: public AliExternalTrackParam
{
public:
+ enum {kKilled=BIT(14),kSave=BIT(15),kMark=BIT(16),kFake=BIT(17)};
+ enum {kF02,kF04,kF12,kF13,kF14,kF24, kF44,kNFElem}; // non-trivial elems of propagation matrix
+ enum {kK00,kK01,kK10,kK11,kK20,kK21,kK30,kK31,kK40,kK41, kNKElem}; // non-trivial elems of gain matrix
+ enum {kS00,kS10,kS11,kS20,kS21,kS22,kS30,kS31,kS32,kS33,kS40,kS41,kS42,kS43,kS44,kNSElem}; // elements of 5x5 sym matrix
+ enum {kR00,kR22,kNRElem}; // non trivial elements of rotation matrix
+ //
AliITSUSeed();
AliITSUSeed(const AliITSUSeed& src);
AliITSUSeed &operator=(const AliITSUSeed &src);
void SetLr(Int_t lr) {SetLrClusterID(lr,-1);} // lr w/o cluster
void SetLrClusterID(UInt_t id) {fClID = id;}
void SetParent(TObject* par) {fParent = par;}
- void SetChi2Cl(Double_t v) {fChi2Glo += fChi2Cl= v;}
+ void SetChi2Cl(Double_t v) {fChi2Cl= v; v>0 ? fChi2Glo+=v : fChi2Penalty -= v;}
+ void Kill(Bool_t v=kTRUE) {SetBit(kKilled, v);}
+ void SetFake(Bool_t v=kTRUE) {SetBit(kFake, v);}
+ void Save(Bool_t v=kTRUE) {SetBit(kSave,v);}
+ void SetMark(Bool_t v=kTRUE) {SetBit(kMark,v);}
+ void FlagTree(UInt_t bits, Bool_t v=kTRUE);
+ void SetChi2ITSTPC(Float_t v) {fChi2Match = v;}
+ void SetChi2ITSSA(Float_t v) {fChi2ITSSA = v;}
//
UInt_t GetLrClusterID() const {return fClID;}
Int_t GetLrCluster(Int_t &lr) const {return UnpackCluster(fClID,lr);}
Int_t GetLayerID() const {return UnpackLayer(fClID);}
Int_t GetClusterID() const {return UnpackCluster(fClID);}
Bool_t HasClusterOnLayer(Int_t lr) const {return fHitsPattern&(0x1<<lr);}
+ Bool_t HasCluster() const {return IsCluster(fClID);}
Int_t GetNLayersHit() const {return NumberOfBitsSet(fHitsPattern);}
+ Int_t GetNClusters() const;
+ Int_t GetClusterIndex(Int_t ind) const;
UShort_t GetHitsPattern() const {return fHitsPattern;}
Float_t GetChi2Cl() const {return fChi2Cl;}
Float_t GetChi2Glo() const {return fChi2Glo;}
+ Float_t GetChi2Penalty() const {return fChi2Penalty;}
+ Float_t GetChi2GloNrm() const;
+ Float_t GetChi2ITSTPC() const {return fChi2Match;}
+ Float_t GetChi2ITSSA() const {return fChi2ITSSA;}
+ Float_t GetQualityVar() const;
+ Bool_t IsKilled() const {return TestBit(kKilled);}
+ Bool_t IsFake() const {return TestBit(kFake);}
+ Bool_t IsSaved() const {return TestBit(kSave);}
+ Bool_t IsMarked() const {return TestBit(kMark);}
+ Bool_t ContainsFake() const;
+ Int_t FetchClusterInfo(Int_t *clIDarr) const;
+ //
+ Int_t GetPoolID() const {return int(GetUniqueID())-1;}
+ void SetPoolID(Int_t id) {SetUniqueID(id+1);}
//
TObject* GetParent() const {return fParent;}
+ const AliITSUSeed* GetParent(Int_t lr) const;
+ //
+ virtual Bool_t IsSortable() const {return kTRUE;}
+ virtual Bool_t IsEqual(const TObject* obj) const;
+ virtual Int_t Compare(const TObject* obj) const;
+ //
+ // test
+ void InitFromSeed(const AliExternalTrackParam* seed);
+ void ResetFMatrix();
+ void ApplyELoss2FMatrix(Double_t frac, Bool_t beforeProp);
+ Bool_t ApplyMaterialCorrection(Double_t xOverX0, Double_t xTimesRho, Double_t mass, Bool_t beforeProp);
+ Bool_t PropagateToX(Double_t xk, Double_t b);
+ Bool_t RotateToAlpha(Double_t alpha);
+ Bool_t GetTrackingXAtXAlpha(double xOther,double alpOther,double bz, double &x);
+ Double_t GetPredictedChi2(Double_t p[2],Double_t cov[3]);
+ Bool_t Update();
+ Bool_t Smooth(Double_t vecL[5],Double_t matL[15]);
+ Double_t* ProdABA(const double a[15],const double b[15]) const;
+ //
+ UInt_t GetNChildren() const {return fNChildren;}
+ Int_t IncChildren() {return ++fNChildren;}
+ Int_t DecChildren() {return --fNChildren;}
+ Double_t GetResidY() const {return fResid[0];}
+ Double_t GetResidZ() const {return fResid[1];}
+ //
+#ifdef _ITSU_TUNING_MODE_ // this is used only for tuning histo filling
+ void SetOrdBranch(UShort_t v) {fOrdBranch=v;}
+ void SetOrdCand(UShort_t v) {fOrdCand=v;}
+ Int_t GetOrdBranch() const {return fOrdBranch;}
+ Int_t GetOrdCand() const {return fOrdCand;}
+ Double_t GetPullY() const {return fResid[0]*Sqrt(fCovIYZ[0]);}
+ Double_t GetPullZ() const {return fResid[1]*Sqrt(fCovIYZ[2]);}
+#endif
//
protected:
+ //
UShort_t fHitsPattern; // bit pattern of hits
+ UShort_t fNChildren; // number of children (prolongations)
UInt_t fClID; // packed cluster info (see AliITSUAux::PackCluster)
- Float_t fChi2Glo; // current chi2 global
- Float_t fChi2Cl; // track-cluster chi2
+ Float_t fChi2Glo; // current chi2 global (sum of track-cluster chi2's on layers with hit)
+ Float_t fChi2Cl; // track-cluster chi2 (if >0) or penalty for missing cluster (if < 0)
+ Float_t fChi2Penalty; // total penalty (e.g. for missing clusters)
+ Float_t fChi2Match; // ITS/TPC matching chi2 (per NDF) // RS: to move to separate object of final seed
+ Float_t fChi2ITSSA; // ITSSA backward fit chi2 (per NDF) // RS: to move to separate object of final seed
+ Double_t fFMatrix[kNFElem]; // matrix of propagation from prev layer (non-trivial elements)
+ Double_t fKMatrix[kNKElem]; // Gain matrix non-trivial elements (note: standard MBF formula uses I-K*H)
+ Double_t fRMatrix[kNRElem]; // rotation matrix non-trivial elements
+ Double_t fCovIYZ[3]; // inverted matrix of propagation + meas errors = [Hi * Pi|i-1 * Hi^T + Ri]^-1
+ Double_t fResid[2]; // residuals vector
TObject* fParent; // parent track (in higher tree hierarchy)
-
+ //
+#ifdef _ITSU_TUNING_MODE_ // this is used only for tuning histo filling
+ UShort_t fOrdBranch; //! order in the seed branching
+ UShort_t fOrdCand; //! order in candidates tree
+#endif
+ //
ClassDef(AliITSUSeed,1)
};
if (cl>=0) fHitsPattern |= 0x1<<lr;
}
+//_________________________________________________________________________
+inline void AliITSUSeed::ResetFMatrix()
+{
+ // reset transport matrix
+ fFMatrix[kF02] = fFMatrix[kF04] = fFMatrix[kF12] = fFMatrix[kF13] = fFMatrix[kF14] = fFMatrix[kF24] = 0;
+ fFMatrix[kF44] = 1.0; // this element accumulates eloss
+}
+
+//_________________________________________________________________________
+inline Bool_t AliITSUSeed::ApplyMaterialCorrection(Double_t xOverX0, Double_t xTimesRho, Double_t mass, Bool_t beforeProp)
+{
+ // apply material correction and modify transport matrix
+ double pold = Get1P();
+ if (!CorrectForMeanMaterial(xOverX0,xTimesRho,mass)) return kFALSE;
+ ApplyELoss2FMatrix( Get1P()/pold, beforeProp);
+ return kTRUE;
+}
+
+
+//_________________________________________________________________________
+inline void AliITSUSeed::ApplyELoss2FMatrix(Double_t frac, Bool_t beforeProp)
+{
+ // Accounts for the energy loss in the transport matrix
+ // equivalent to multiplying Fmatix by E=diag{1,1,1,1,P4new/P4old}, where P4 is the 1/pt param.
+ // If beforeProp is true, then it is assumed that the eloss was applied before the transport,
+ // i.e. F' = F * E, otherwise, after transport, F' = E * F
+ fFMatrix[kF44] *= frac;
+ if (beforeProp) {
+ fFMatrix[kF04] *= frac;
+ fFMatrix[kF14] *= frac;
+ fFMatrix[kF24] *= frac;
+ }
+}
+
+//_________________________________________________________________________
+inline const AliITSUSeed* AliITSUSeed::GetParent(Int_t lr) const
+{
+ // get parent at given layer
+ const AliITSUSeed* par=this;
+ int lrt;
+ while( par && (lrt=par->GetLayerID())>=0 ) {
+ if (lrt==lr) break;
+ par = dynamic_cast<const AliITSUSeed*>(par->GetParent());
+ }
+ return par;
+}
+
+//__________________________________________________________________
+inline Int_t AliITSUSeed::GetNClusters() const
+{
+ // count number of clusters (some layers may have >1 hit)
+ int ncl = 0;
+ const AliITSUSeed* seed = this;
+ while(seed) {
+ if (seed->HasCluster()) ncl++;
+ seed = (AliITSUSeed*)seed->GetParent();
+ }
+ return ncl;
+ //
+}
+
+//__________________________________________________________________
+inline void AliITSUSeed::FlagTree(UInt_t bits, Bool_t v)
+{
+ // set bits on all tree levels
+ AliITSUSeed* seed = this;
+ do {seed->SetBit(bits,v);} while ( (seed=(AliITSUSeed*)seed->GetParent()) );
+ //
+}
+
+//__________________________________________________________________
+inline Float_t AliITSUSeed::GetQualityVar() const
+{
+ // return variable for quality check (the smaller - the better)
+ // return GetChi2ITSSA()/Pt(); // this may change! RS
+ return GetChi2GloNrm()/Pt();
+}
+
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff