1 #ifndef ALIITSUTRACKCOND_H
2 #define ALIITSUTRACKCOND_H
8 //------------------------------------------------------------------------------
10 // This class defines a set of hit patterns (conditions) to consider the track reconstructable
11 // Each condidition (few consequitive elements from fConditions array) is set of bit patterns,
12 // with each element of condition defining a group of layers which must be present in the tracks.
13 // For instance, if we require the track to have contributions from
14 // {lr0 or lr1 or lr2} AND {lr2 or lr 3 or lr 4} AND {lr5 or lr6} then the condition should
15 // be {BIT(0)|BIT(1)|BIT(2), BIT(2)|BIT(3)|BIT(4), BIT(5)|BIT(6)}.
16 // Additionally, each condition may request min number of hits to be present
18 // Each AliITSUTrackCond should correspond to single track finding pass and may contain multiple
19 // conditions. To consider the track reconstructable it is enough to satisfy 1 condition
21 //------------------------------------------------------------------------------
24 class AliITSUTrackCond : public TObject
27 enum {kCondStart,kNGroups,kMinClus,kNAuxSz};
28 enum {kShiftNcl=24}; // the min_Nclusters for each pattern is stored starting from this bit
30 AliITSUTrackCond(Int_t nLayers=0);
31 AliITSUTrackCond(const AliITSUTrackCond& src);
32 AliITSUTrackCond &operator=(const AliITSUTrackCond& src);
34 ~AliITSUTrackCond() {}
36 void SetNLayers(Int_t nl);
37 void SetClSharing(Int_t lr, Char_t v=0) {fClSharing[lr] = v;}
38 void SetMaxBranches(Int_t lr, Int_t mb) {fMaxBranches[lr] = mb;}
39 void SetMaxCandidates(Int_t lr, Int_t nc) {fMaxCandidates[lr] = nc;}
40 void SetID(Int_t id) {SetUniqueID(id);}
41 void AddNewCondition(Int_t minClusters);
42 void AddGroupPattern(UShort_t patt,Int_t ncl);
44 Int_t GetID() const {return GetUniqueID();}
45 Int_t GetMaxBranches(Int_t lr) const {return fMaxBranches[lr];}
46 Int_t GetMaxCandidates(Int_t lr) const {return fMaxCandidates[lr];}
47 Int_t GetNConditions() const {return fNConditions;}
48 UShort_t GetGroup(Int_t condID,Int_t grID) const {return fConditions[fAuxData[condID*kNAuxSz+kCondStart]+grID];}
49 Bool_t CheckPattern(UShort_t patt) const;
51 virtual void Print(Option_t* option = "") const;
53 void SetMaxITSTPCMatchChi2(Float_t v) {fMaxITSTPCMatchChi2 = v;}
54 void SetMaxITSSAChi2(Float_t v) {fMaxITSSAChi2 = v;}
55 void SetMaxTr2ClChi2(Int_t lr, Float_t v) {fMaxTr2ClChi2[lr] = v;}
56 void SetMaxChi2GloNrm(Int_t lr, Float_t v) {fMaxChi2GloNrm[lr] = v;}
57 void SetMissPenalty(Int_t lr, Float_t v) {fMissPenalty[lr] = v;}
58 void SetNSigmaRoadY(Int_t lr, Float_t v) {fNSigmaRoadY[lr] = v;}
59 void SetNSigmaRoadZ(Int_t lr, Float_t v) {fNSigmaRoadZ[lr] = v;}
61 Float_t GetMaxITSTPCMatchChi2() const {return fMaxITSTPCMatchChi2;}
62 Float_t GetMaxITSSAChi2() const {return fMaxITSSAChi2;}
63 Char_t GetClSharing(Int_t lr) const {return fClSharing[lr];}
64 Float_t GetMissPenalty(Int_t lr) const {return fMissPenalty[lr];}
65 Float_t GetMaxTr2ClChi2(Int_t lr) const {return fMaxTr2ClChi2[lr];}
66 Float_t GetMaxChi2GloNrm(Int_t lr) const {return fMaxChi2GloNrm[lr];}
67 Float_t GetNSigmaRoadY(Int_t lr) const {return fNSigmaRoadY[lr];}
68 Float_t GetNSigmaRoadZ(Int_t lr) const {return fNSigmaRoadZ[lr];}
69 Bool_t IsLayerExcluded(Int_t lr) const {return GetMaxTr2ClChi2(lr)<=0;}
72 Bool_t IsInitDone() const {return fInitDone;}
76 Bool_t fInitDone; // initialization flag
77 Int_t fNLayers; // total number of layers
78 Float_t fMaxITSTPCMatchChi2; // max chi2 for ITS/TPC matching
79 Float_t fMaxITSSAChi2; // max chi2 for ITS standalone fit (backward)
80 Char_t* fClSharing; // [fNLayers] is cluster sharing allowed
81 Short_t* fMaxBranches; // [fNLayers] max allowed branches per seed on each layer
82 Short_t* fMaxCandidates; // [fNLayers] max allowed candidates per TPC seed on each layer
83 Float_t* fMaxTr2ClChi2; // [fNLayers] max track-to-cluster chi2
84 Float_t* fMaxChi2GloNrm; // [fNLayers] max norm global chi2
85 Float_t* fMissPenalty; // [fNLayers] chi2 penalty for missing hit on the layer
86 Float_t* fNSigmaRoadY; // [fNLayers] number of sigmas in Y
87 Float_t* fNSigmaRoadZ; // [fNLayers] number of sigmas in Z
89 Short_t fNConditions; // number of conditions defined
90 TArrayI fConditions; // fNConditions set of conditions
91 TArrayS fAuxData; // condition beginning (1st group), n groups, min clus
93 static Char_t fgkClSharing; // def cl.sharing allowed level
94 static Int_t fgkMaxBranches; // def max number of branches per seed on current layer
95 static Int_t fgkMaxCandidates; // def max number of total candidates on current layer
96 static Float_t fgkMaxTr2ClChi2; // def track-to-cluster chi2 cut
97 static Float_t fgkMaxChi2GloNrm; // def global norm chi2 cut
98 static Float_t fgkMissPenalty; // penalty for missing cluster
99 static Float_t fgkMaxMatchChi2; // max acceptable matching chi2
100 static Float_t fgkMaxITSSAChi2; // max acceptable standalone ITS backward fit chi2
102 ClassDef(AliITSUTrackCond,6) // set of requirements on track hits pattern