Including cmath
[u/mrichter/AliRoot.git] / ITS / AliITSRecPoint.h
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b0f5e3fc 1#ifndef ALIITSRECPOINT_H
2#define ALIITSRECPOINT_H
ee84ac37 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*/
b0f5e3fc 9
00a7cc50 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///////////////////////////////////////////////////////////////////////////////
b0f5e3fc 24
00a7cc50 25#include <AliCluster.h>
4ae5bbc4 26#include <Riostream.h>
00a7cc50 27#include <AliLog.h>
28#include <AliITSgeom.h>
b0f5e3fc 29
30
00a7cc50 31class AliITSRecPoint : public AliCluster {
b0f5e3fc 32 public:
00a7cc50 33 AliITSRecPoint();
34 AliITSRecPoint(AliITSgeom* geom);
35 AliITSRecPoint(Int_t *lab,Float_t *hit, Int_t *info);
36 AliITSRecPoint(Int_t module,AliITSgeom* geom,Int_t *lab,
37 Float_t *hit, Int_t *info);
38 AliITSRecPoint(const AliITSRecPoint& pt);
39 AliITSRecPoint& operator=(const AliITSRecPoint &source);
40
41 virtual ~AliITSRecPoint() {}; // distructor
42 Bool_t IsSortable() const {return kTRUE;} // allows for sorting
43 Int_t *GetTracks(){return fTracks;}// Returns pointer to track array
44 Int_t GetNTracks() const {return 3;} // returns track array size
45 Float_t GetDetLocalX() const {return fXloc;} // gets fX
46 Float_t GetDetLocalZ() const {return fZloc;} // gets fZ
47 Float_t GetdEdX() const {return fdEdX;} // gets fdEdX
48 Float_t GetSigmaDetLocX2() const {return fSigmaY2;} // gets fSigmaX2
49 void SetdEdX(Float_t dedx){fdEdX=dedx;} // sets fdEdX
50 void SetSigmaDetLocX2(Float_t sx2){fSigmaY2=sx2;} // sets fSigmaX2
51 Int_t Compare(const TObject *) const {return 0;} //to be defined
52 void Print(ostream *os);
53 // Reads in the content of this class in the format of Print
54 void Read(istream *is);
55 virtual void Print(Option_t *option="") const {TObject::Print(option);}
56 virtual Int_t Read(const char *name) {return TObject::Read(name);}
57
58 void SetITSgeom(AliITSgeom* geom) {fGeom=geom;}
a504d56f 59
00a7cc50 60 virtual void SetY(Float_t y ){fY=y;
61 AliError("For consistency, Use method SetYZ. Data members are only partially set\n");}
62 virtual void SetZ(Float_t z ){fZ=z;
63 AliError("For consistency, Use method SetYZ. Data members are only partially set\n");}
64 void SetYZ(Int_t module, Float_t y, Float_t z){
65 fY=y;fZ=z;
66 if(fGeom)fGeom->TrackingV2ToDetL(module,y,z,fXloc,fZloc);
67 else AliError("Geometry not set. \n");
68 }
69 void SetXZ(Int_t module, Float_t x, Float_t z){
70 fXloc=x;fZloc=z;
71 if(fGeom)fGeom->DetLToTrackingV2(module,x,z,fY,fZ);
72 else AliError("Geometry not set. Nothing done!!!!!\n");
73 }
74 void Use(Int_t = 0) {fQ=-fQ;}
75 void UnUse() {fQ=TMath::Abs(fQ);}
76 void SetQ(Float_t q) {fQ=q;}
77 void SetDetectorIndex(Int_t i) { fIndex=i; }
78 void SetLayer(Int_t layer) {fLayer=layer;}
79 void SetNz(Int_t nz) {fNz =nz;}
80 void SetNy(Int_t ny){fNy=ny;}
81 void SetChargeRatio(Float_t ratio) { fChargeRatio = ratio;}
82 void SetPhiR(Float_t y) { fChargeRatio=y; }
83 void SetType(Int_t type){ fType=type;}
84 void SetDeltaProbability(Float_t prob){fDeltaProb = prob;}
85
86 Int_t IsUsed() const {return (fQ<0)?1:0;}
87 Float_t GetQ() const {return TMath::Abs(fQ);}
88 Int_t GetDetectorIndex() const { return 0x3FF&fIndex; }
89 Int_t GetLayer() const {return fLayer;}
90 Int_t GetNz() const {return fNz;}
91 Int_t GetNy() const {return fNy;}
92 Float_t GetChargeRatio() const {return fChargeRatio;}
93 Float_t GetPhiR() const {return fChargeRatio;}
94 Int_t GetPindex() const { return 0xFFF00000&fIndex; } //SSD clusters only
95 Int_t GetNindex() const { return 0xFFC00&fIndex; } //SSD clusters only
96 Int_t GetType() const {return fType;} // type of the cluster
97 Float_t GetDeltaProbability() const{return fDeltaProb;} //probability to belong to the delta ray
98
a504d56f 99 // The following two methods deal with the misaligned x position
100 // of a cluster in the tracking coordidate system
101 virtual Float_t GetX() const {return fX;}
102 virtual void SetX(Float_t x) {fX=x;}
b0f5e3fc 103
00a7cc50 104 protected:
a504d56f 105 Float_t fX; // X coordinate in the misaligned tracking system
00a7cc50 106
107 Float_t fXloc ; //X of cluster (local coordinates)
108 Float_t fZloc ; //Z of cluster (local coordinates)
109 Float_t fdEdX; //dE/dX inside this cluster
110
111 Int_t fIndex; // detector index
112 Float_t fQ ; // Q of cluster (in ADC counts)
113 Char_t fLayer; // layer number
114 Short_t fNz; //number of digits in Z direction
115 Short_t fNy; //number of digits in y direction
116 Float_t fChargeRatio; //charge ratio
117 Int_t fType; //quality factor of the cluster
118 Float_t fDeltaProb; // probability to be deleta electron
119
120 AliITSgeom* fGeom; //!pointer to ITS geometry
121
d89cf0f2 122 ClassDef(AliITSRecPoint,3) // AliITSRecPoint class
b0f5e3fc 123};
ee84ac37 124// Input and output function for standard C++ input/output.
125ostream& operator<<(ostream &os,AliITSRecPoint &source);
126istream& operator>>(istream &is,AliITSRecPoint &source);
b0f5e3fc 127#endif