1 #ifndef ALIITSSEGMENTATION_H
2 #define ALIITSSEGMENTATION_H
6 #include "AliITSgeom.h"
10 //----------------------------------------------
12 // ITS segmentation virtual base class -
14 //----------------------------------------------
16 class AliITSsegmentation :
20 AliITSsegmentation(const AliITSsegmentation& source);
21 virtual ~AliITSsegmentation();
22 AliITSsegmentation& operator=(const AliITSsegmentation &source);
23 // Set Detector Segmentation Parameters
26 virtual void SetDetSize(Float_t p1,Float_t p2,Float_t p3)
27 {fDx=p1; fDz=p2; fDy=p3;}
29 virtual void SetPadSize(Float_t,Float_t) {MayNotUse("SetPadSize");}
30 // Maximum number of cells along the two coordinates
31 virtual void SetNPads(Int_t,Int_t) = 0;
32 // Returns the maximum number of cells (digits) posible
33 virtual Int_t GetNPads() const = 0;
35 virtual void SetLayer(Int_t) {MayNotUse("SetLayer");}
37 virtual Int_t GetNumberOfChips() const {MayNotUse("GetNumberOfChips"); return 0;}
38 // Chip number from local coordinates
39 virtual Int_t GetChipFromLocal(Float_t, Float_t) const {MayNotUse("GetChipFromLocal"); return 0;}
40 // Chip number from channel number
41 virtual Int_t GetChipFromChannel(Int_t, Int_t) const {MayNotUse("GetChipFromChannel"); return 0;}
43 // Transform from real to cell coordinates
44 virtual void GetPadIxz(Float_t,Float_t,Int_t &,Int_t &) const = 0;
45 // Transform from cell to real coordinates
46 virtual void GetPadCxz(Int_t,Int_t,Float_t &,Float_t &) const = 0;
47 // Local transformation of real local coordinates -
48 virtual void GetPadTxz(Float_t &,Float_t &) const = 0;
49 // Transformation from Geant cm detector center local coordinates
50 // to detector segmentation/cell coordiantes starting from (0,0).
51 virtual Bool_t LocalToDet(Float_t,Float_t,Int_t &,Int_t &) const = 0;
52 // Transformation from detector segmentation/cell coordiantes starting
53 // from (0,0) to Geant cm detector center local coordinates.
54 virtual void DetToLocal(Int_t,Int_t,Float_t &,Float_t &) const = 0;
56 // Transform from real global to local coordinates
57 void GetLocal(Int_t module,Float_t *g ,Float_t *l, AliITSgeom *geom) const {
58 if(geom) geom->GtoL(module,g,l);
59 else AliFatal("Pointer to ITS geometry class (AliITSgeom) is null\n");
61 // Transform from real local to global coordinates
62 void GetGlobal(Int_t module,Float_t *l ,Float_t *g, AliITSgeom *geom) const {
63 if(geom) geom->LtoG(module,l,g);
64 else AliFatal("Pointer to ITS geometry class (AliITSgeom) is null\n");
68 virtual void Init() = 0;
73 virtual Float_t Dx() const {return fDx;}
75 virtual Float_t Dz() const {return fDz;}
77 virtual Float_t Dy() const {return fDy;}
79 virtual Float_t Dpx(Int_t) const = 0;
81 virtual Float_t Dpz(Int_t) const = 0;
82 // Maximum number of Cells in x
83 virtual Int_t Npx() const = 0;
84 // Maximum number of Cells in z
85 virtual Int_t Npz() const = 0;
87 virtual Int_t GetLayer() const {MayNotUse("GetLayer"); return 0;}
89 // virtual void SetHit(Float_t, Float_t) {}
91 virtual void Angles(Float_t& /* p */, Float_t& /* n */) const
92 {MayNotUse("Angles");}
95 // Get next neighbours
96 virtual void Neighbours(Int_t,Int_t,Int_t*,Int_t[10],Int_t[10]) const
97 {MayNotUse("Neighbours");}
99 // Function for systematic corrections
100 // Set the correction function
101 virtual void SetCorrFunc(TF1* fc) {fCorr = fc;}
102 // Get the correction Function
103 virtual TF1* CorrFunc() {return fCorr;}
104 // Print Default parameters
105 virtual void PrintDefaultParameters() const = 0;
109 virtual void Copy(TObject &obj) const;
111 Float_t fDx; //SPD: Full width of the detector (x axis)- microns
112 //SDD: Drift distance of the 1/2detector (x axis)-microns
113 //SSD: Full length of the detector (x axis)- microns
114 Float_t fDz; //SPD: Full length of the detector (z axis)- microns
115 //SDD: Full Length of the detector (z axis) - microns
116 //SSD: Full width of the detector (z axis)- microns
117 Float_t fDy; //SPD: Full thickness of the detector (y axis) -um
118 //SDD: Full thickness of the detector (y axis) - microns
119 //SSD: Full thickness of the detector (y axis) -um
120 TF1* fCorr; // correction function
122 ClassDef(AliITSsegmentation,2) //Segmentation virtual base class