1 #ifndef ALITRACKPOINTARRAY_H
2 #define ALITRACKPOINTARRAY_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 //////////////////////////////////////////////////////////////////////////////
7 // Class AliTrackPoint //
8 // This class represent a single track space-point. //
9 // It is used to access the points array defined in AliTrackPointArray. //
10 // Note that the space point coordinates are given in the global frame. //
12 // cvetan.cheshkov@cern.ch 3/11/2005 //
13 //////////////////////////////////////////////////////////////////////////////
17 class AliTrackPoint : public TObject {
21 AliTrackPoint(Float_t x, Float_t y, Float_t z, const Float_t *cov, UShort_t volid);
22 AliTrackPoint(const Float_t *xyz, const Float_t *cov, UShort_t volid);
23 AliTrackPoint(const AliTrackPoint &p);
24 AliTrackPoint& operator= (const AliTrackPoint& p);
25 virtual ~AliTrackPoint() {}
27 // Multiplication with TGeoMatrix and distance between points (chi2) to be implemented
29 void SetXYZ(Float_t x, Float_t y, Float_t z, const Float_t *cov = 0);
30 void SetXYZ(const Float_t *xyz, const Float_t *cov = 0);
31 void SetVolumeID(UShort_t volid) { fVolumeID = volid; }
33 Float_t GetX() const { return fX; }
34 Float_t GetY() const { return fY; }
35 Float_t GetZ() const { return fZ; }
36 void GetXYZ(Float_t *xyz, Float_t *cov = 0) const;
37 const Float_t *GetCov() const { return &fCov[0]; }
38 UShort_t GetVolumeID() const { return fVolumeID; }
40 Float_t GetResidual(const AliTrackPoint &p, Bool_t weighted = kFALSE) const;
42 Float_t GetAngle() const;
43 AliTrackPoint& Rotate(Float_t alpha) const;
44 AliTrackPoint& MasterToLocal() const;
46 void Print(Option_t *) const;
50 Float_t fX; // X coordinate
51 Float_t fY; // Y coordinate
52 Float_t fZ; // Z coordinate
53 Float_t fCov[6]; // Cov matrix
54 UShort_t fVolumeID; // Volume ID
56 ClassDef(AliTrackPoint,1)
59 //////////////////////////////////////////////////////////////////////////////
60 // Class AliTrackPointArray //
61 // This class contains the ESD track space-points which are used during //
62 // the alignment procedures. Each space-point consist of 3 coordinates //
63 // (and their errors) and the index of the sub-detector which contains //
64 // the space-point. //
65 // cvetan.cheshkov@cern.ch 3/11/2005 //
66 //////////////////////////////////////////////////////////////////////////////
68 class AliTrackPointArray : public TObject {
73 AliTrackPointArray(Int_t npoints);
74 AliTrackPointArray(const AliTrackPointArray &array);
75 AliTrackPointArray& operator= (const AliTrackPointArray& array);
76 virtual ~AliTrackPointArray();
78 // Bool_t AddPoint(Int_t i, AliCluster *cl, UShort_t volid);
79 Bool_t AddPoint(Int_t i, const AliTrackPoint *p);
81 Int_t GetNPoints() const { return fNPoints; }
82 Int_t GetCovSize() const { return fSize; }
83 Bool_t GetPoint(AliTrackPoint &p, Int_t i) const;
84 // Getters for fast access to the coordinate arrays
85 const Float_t* GetX() const { return &fX[0]; }
86 const Float_t* GetY() const { return &fY[0]; }
87 const Float_t* GetZ() const { return &fZ[0]; }
88 const Float_t* GetCov() const { return &fCov[0]; }
89 const UShort_t* GetVolumeID() const { return &fVolumeID[0]; }
91 Bool_t HasVolumeID(UShort_t volid) const;
95 Int_t fNPoints; // Number of space points
96 Float_t *fX; //[fNPoints] Array with space point X coordinates
97 Float_t *fY; //[fNPoints] Array with space point Y coordinates
98 Float_t *fZ; //[fNPoints] Array with space point Z coordinates
99 Int_t fSize; // Size of array with cov matrices = 6*N of points
100 Float_t *fCov; //[fSize] Array with space point coordinates cov matrix
101 UShort_t *fVolumeID; //[fNPoints] Array of space point volume IDs
103 ClassDef(AliTrackPointArray,1)