Line data Source code
1 : #ifndef ALIITSRECPOINT_H
2 : #define ALIITSRECPOINT_H
3 : /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 : * See cxx source for full Copyright notice */
5 :
6 : /*
7 : $Id$
8 : */
9 :
10 : ///////////////////////////////////////////////////////////////////////////////
11 : // Reconstructed space point class for set:ITS
12 : // Reconstructed points are expressed simultaneously in two different
13 : // reference frames, both differing from the global system.
14 : // The first is referred to the sensor (see AliITSsegmentation for the
15 : // definition) and each point is represented by two coordinates: fXloc and
16 : // fZloc. This system in the code is referred to as "local"
17 : // The second is used for tracking (V2, SA and MI versions) and the X axis
18 : // represents the radial coordinate (this system is, in the bending plane,
19 : // a rotated system w.r.t. the global reference system).
20 : // Each reaconstructed point is represented by two coordinates: fY and fZ,
21 : // inherited from AliCluster. This system in the code is referred to as
22 : // "trackingV2".
23 : ///////////////////////////////////////////////////////////////////////////////
24 :
25 : #include <AliCluster.h>
26 : #include <TMath.h>
27 : #include <iosfwd>
28 :
29 : using std::ostream;
30 : using std::istream;
31 :
32 : class AliITSRecPoint : public AliCluster {
33 : public:
34 : AliITSRecPoint();
35 : AliITSRecPoint(Int_t *lab,Float_t *hit, Int_t *info, Bool_t local = kFALSE);
36 : AliITSRecPoint(const AliITSRecPoint& pt);
37 : AliITSRecPoint& operator=(const AliITSRecPoint &source);
38 :
39 7208 : virtual ~AliITSRecPoint() {}; // distructor
40 0 : Bool_t IsSortable() const {return kTRUE;} // allows for sorting
41 438 : Float_t GetDetLocalX() const {return fXloc;} // gets fX
42 730 : Float_t GetDetLocalZ() const {return fZloc;} // gets fZ
43 0 : Float_t GetdEdX() const {return fdEdX;} // gets fdEdX
44 0 : Float_t GetSigmaDetLocX2() const {return GetSigmaY2();} // gets fSigmaX2
45 0 : void SetdEdX(Float_t dedx){fdEdX=dedx;} // sets fdEdX
46 0 : Int_t Compare(const TObject *) const {return 0;} //to be defined
47 : void Print(ostream *os);
48 : // Reads in the content of this class in the format of Print
49 : void Read(istream *is);
50 0 : virtual void Print(Option_t *option="") const {TObject::Print(option);}
51 0 : virtual Int_t Read(const char *name) {return TObject::Read(name);}
52 :
53 0 : void Use(Int_t = 0) {fQ=-fQ;}
54 0 : void UnUse() {fQ=TMath::Abs(fQ);}
55 0 : void SetQ(Float_t q) {fQ=q;}
56 0 : void SetDetectorIndex(Int_t i) { fIndex=i; }
57 0 : void SetLayer(Int_t layer) {fLayer=layer;}
58 0 : void SetNz(Int_t nz) {fNz =nz;}
59 0 : void SetNy(Int_t ny){fNy=ny;}
60 1040 : void SetChargeRatio(Float_t ratio) { fChargeRatio = ratio;}
61 0 : void SetPhiR(Float_t y) { fChargeRatio=y; }
62 1360 : void SetType(Int_t type){ fType=type;}
63 0 : void SetDeltaProbability(Float_t prob){fDeltaProb = prob;}
64 456 : void SetDriftTime(Float_t tim) {fDriftTime=tim;}
65 456 : void SetDriftSide(Int_t sid) {fDriftSide=sid;}
66 :
67 4756 : Int_t IsUsed() const {return (fQ<0)?1:0;}
68 102434 : Float_t GetQ() const {return TMath::Abs(fQ);}
69 34306 : Int_t GetDetectorIndex() const { return 0x3FF&fIndex; }
70 634 : Int_t GetLayer() const {return fLayer;}
71 68570 : Int_t GetNz() const {return fNz;}
72 64564 : Int_t GetNy() const {return fNy;}
73 534 : Float_t GetChargeRatio() const {return fChargeRatio;}
74 0 : Float_t GetPhiR() const {return fChargeRatio;}
75 0 : Int_t GetPindex() const { return 0xFFF00000&fIndex; } //SSD clusters only
76 0 : Int_t GetNindex() const { return 0xFFC00&fIndex; } //SSD clusters only
77 0 : Int_t GetType() const {return fType;} // type of the cluster (for SPD the number of pixels in the cluster)
78 10968 : Float_t GetDeltaProbability() const{return fDeltaProb;} //probability to belong to the delta ray
79 534 : Float_t GetDriftTime() const{return fDriftTime;}
80 0 : Int_t GetDriftSide() const {return fDriftSide;}
81 : Int_t GetNpixels() const; // for SPD returns fType, i.e. the number of pixels in the cluster (-1 for SDD and SSD)
82 : Int_t GetSPDclusterType() const; // for SPD returns cluster type according to conventional numbering (-1 for SDD and SSD)
83 : Int_t GetSDDclusterType() const;
84 : Int_t GetSSDclusterType() const;
85 : static void DecodeSDDclusterType(Int_t cluType, Int_t &cluSizAn, Int_t& cluSizTb, Int_t &drSide);
86 :
87 : Int_t GetClusterType() const {
88 601 : if(fLayer<=1) return GetSPDclusterType();
89 452 : if(fLayer==2 || fLayer==3) return GetSDDclusterType();
90 101 : return GetSSDclusterType();
91 267 : }
92 : protected:
93 :
94 : Float_t fXloc ; //X of cluster (local coordinates)
95 : Float_t fZloc ; //Z of cluster (local coordinates)
96 : Float_t fdEdX; //dE/dX inside this cluster
97 :
98 : Int_t fIndex; // detector index
99 : Float_t fQ ; // Q of cluster (in ADC counts)
100 : Char_t fLayer; // layer number
101 : Short_t fNz; //number of digits in Z direction
102 : Short_t fNy; //number of digits in y direction
103 : Float_t fChargeRatio; //charge ratio
104 : Int_t fType; //quality factor of the cluster
105 : Float_t fDeltaProb; // probability to be delta electron
106 : Float_t fDriftTime; // drift time in SDD
107 : Char_t fDriftSide; // drift region in SDD (0=left=positive xlocal, 1=right)
108 :
109 126 : ClassDef(AliITSRecPoint,7) // AliITSRecPoint class
110 : };
111 : // Input and output function for standard C++ input/output.
112 : ostream& operator<<(ostream &os,AliITSRecPoint &source);
113 : istream& operator>>(istream &is,AliITSRecPoint &source);
114 : #endif
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