1 #ifndef ALIITSGLOBALRECPOINT_H
2 #define ALIITSGLOBALRECPOINT_H
4 class AliITSglobalRecPoint : public TObject {
8 AliITSglobalRecPoint();
9 AliITSglobalRecPoint(Double_t gx, Double_t gy, Double_t gz, Double_t gsx, Double_t gsy, Double_t gsz, Int_t l);
11 virtual ~AliITSglobalRecPoint() { }
13 // difference in azymuthal angle
14 Double_t DPhi (AliITSglobalRecPoint *p);
15 // difference in polar angle
16 Double_t DTheta(AliITSglobalRecPoint *p);
17 // checks if the pt contains a given positive label
18 Bool_t HasID (Int_t ID)
19 { if (ID < 0) return kFALSE; else return (fLabel[0]==ID || fLabel[1]==ID || fLabel[2]==ID); }
20 // checks if the pt shares at least a positive label with another one
21 Bool_t SharesID(AliITSglobalRecPoint *p)
22 { return (HasID(p->fLabel[0]) || HasID(p->fLabel[1]) || HasID(p->fLabel[2])); }
24 // Parameters for sorting
25 Bool_t IsSortable() const { return kTRUE; }
26 Int_t Compare(const TObject *O) const;
30 Double_t fGX, fGY, fGZ; // (x,y,z) in the global reference
32 Double_t fR2; // = sqrt(x^2 + y^2)
33 Double_t fR3; // = sqrt(x^2 + y^2 + z^2)
34 Double_t fPhi; // = atan(y/x)
35 Double_t fTheta; // = acos(z/r3)
38 Double_t fGSY; // sigmas of global coords
41 Int_t fModule; // ITS module containing the point
42 Int_t fPosInModule; // position in TClonesArray of TreeR
43 Int_t fLayer; // ITS layer containing the point
44 Int_t fLabel[3]; // Generated tracks containing the point
45 Int_t fKalmanLabel; // Kalman recognized track containing the point
47 Int_t fSign; // 0 if the point doesn't belong to a Kalman track
48 // + 1 if the point belongs to a Kalman good track
49 // - 1 if the point belongs to a Kalman fake track
51 Int_t fUsed; // a flag to avoid point recycling
53 ClassDef(AliITSglobalRecPoint, 1) // AliITSglobalRecPoints class