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52c19022 | 1 | #ifndef ALITRDGTUPARAM_H |
2 | #define ALITRDGTUPARAM_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id: AliTRDgtuParam.h 27496 2008-07-22 08:35:45Z cblume $ */ | |
7 | ||
8 | // -------------------------------------------------------- | |
9 | // | |
10 | // Singleton class to hold the parameters steering the GTU | |
11 | // tracking | |
12 | // | |
13 | // -------------------------------------------------------- | |
14 | ||
15 | #include "TObject.h" | |
16 | #include "TVectorD.h" | |
17 | ||
18 | class AliTRDgeometry; | |
19 | ||
20 | class AliTRDgtuParam : public TObject { | |
21 | public: | |
22 | virtual ~AliTRDgtuParam(); | |
23 | ||
24 | static AliTRDgtuParam *Instance(); // Singleton | |
25 | static void Terminate(); | |
26 | ||
27 | static inline Int_t GetNLinks() { return fgkNLinks; } | |
28 | static inline Int_t GetNLayers() { return fgkNLinks/2; } | |
29 | static inline Int_t GetNZChannels() { return fgkNZChannels; } | |
30 | static inline Int_t GetNRefLayers() { return fgkNRefLayers; } | |
31 | ||
32 | static inline Float_t GetChamberThickness() { return 3.0; } | |
33 | ||
34 | // ----- Bin widths (granularity) ----- | |
35 | static inline Float_t GetBinWidthY() { return fgkBinWidthY; } | |
36 | static inline Float_t GetBinWidthdY() { return fgkBinWidthdY; } | |
37 | ||
38 | // ----- Bit Widths (used for internal representation) ----- | |
39 | static inline Int_t GetBitWidthY() { return fgkBitWidthY; } | |
40 | static inline Int_t GetBitWidthdY() { return fgkBitWidthdY; } | |
41 | static inline Int_t GetBitWidthYProj() { return fgkBitWidthYProj; } | |
42 | static inline Int_t GetBitExcessY() { return fgkBitExcessY; } | |
43 | static inline Int_t GetBitExcessAlpha() { return fgkBitExcessAlpha; } | |
44 | static inline Int_t GetBitExcessYProj() { return fgkBitExcessYProj; } | |
45 | ||
46 | AliTRDgeometry* GetGeo() const { return fGeo; } | |
47 | Float_t GetVertexSize() const { return fVertexSize; } | |
48 | Int_t GetCiAlpha(Int_t layer) const; | |
49 | Int_t GetCiYProj(Int_t layer) const; | |
50 | Int_t GetYt(Int_t stack, Int_t layer, Int_t zrow) const; | |
51 | Int_t GetDeltaY() const { return fgkDeltaY; } | |
52 | Int_t GetDeltaAlpha() const { return fgkDeltaAlpha; } | |
53 | Int_t GetZSubchannel(Int_t stack, Int_t layer, Int_t zchannel, Int_t zpos) const; | |
54 | Int_t GetRefLayer(Int_t refLayerIdx) const; | |
55 | // Bool_t GetFitParams(TVectorD &rhs, Int_t k); // const | |
56 | Bool_t GetIntersectionPoints(Int_t k, Float_t &x1, Float_t &x2); // const | |
57 | Float_t GetRadius(Int_t a, Float_t b, Float_t x1, Float_t x2); // const | |
58 | ||
59 | Bool_t IsInZChannel(Int_t stack, Int_t layer, Int_t zchannel, Int_t zpos) const; | |
60 | ||
61 | void SetVertexSize(Float_t vertexsize) { fVertexSize = vertexsize; } | |
62 | ||
63 | // z-channel map | |
64 | Int_t zChannelGen(); // could have different modes (for beam-beam, cosmics, ...) | |
65 | Bool_t DisplayZChannelMap(Int_t zchannel = -1, Int_t subch = 0) const; | |
66 | ||
67 | // variables for pt-reconstruction (not used at the moment) | |
68 | Bool_t GenerateRecoCoefficients(Int_t trackletMask); | |
69 | Float_t GetAki(Int_t k, Int_t i); | |
70 | Float_t GetBki(Int_t k, Int_t i); | |
71 | Float_t GetCki(Int_t k, Int_t i); | |
72 | // Float_t GetD(Int_t k) const; | |
73 | ||
74 | protected: | |
75 | static const Int_t fgkNZChannels = 3; // No. of z-channels | |
76 | static const Int_t fgkNLinks = 12; // No. of links | |
77 | static const Int_t fgkFixLayer = 2; // which layer is fixed for the generation of the z-channel map | |
78 | static const Int_t fgkDeltaY = 39; // accepted deviation in y_proj, default: 9 | |
79 | static const Int_t fgkDeltaAlpha = 31; // accepted deviation in alpha, default: 11 | |
80 | static const Int_t fgkNRefLayers = 3; // no. of reference layers | |
81 | ||
82 | static const Float_t fgkBinWidthY; | |
83 | static const Float_t fgkBinWidthdY; | |
84 | ||
85 | static const Int_t fgkBitWidthY; | |
86 | static const Int_t fgkBitWidthdY; | |
87 | static const Int_t fgkBitWidthYProj; | |
88 | static const Int_t fgkBitExcessY; | |
89 | static const Int_t fgkBitExcessAlpha; | |
90 | static const Int_t fgkBitExcessYProj; | |
91 | ||
92 | Float_t fVertexSize; // assumed vertex size (z-dir.) for the z-channel map | |
93 | ||
94 | Int_t fZChannelMap[5][16][6][16]; // must be changed | |
95 | Int_t fZSubChannel[5][fgkNZChannels][6][16]; // must be changed | |
96 | ||
97 | Int_t fCurrTrackletMask; | |
98 | Float_t fAki[6]; | |
99 | Float_t fBki[6]; | |
100 | Float_t fCki[6]; | |
101 | ||
102 | Int_t *fRefLayers; //[fgkNRefLayers] reference layers for track finding | |
103 | ||
104 | AliTRDgeometry *fGeo; //! pointer to the TRD geometry | |
105 | ||
106 | static AliTRDgtuParam *fgInstance; // instance pointer | |
107 | ||
108 | private: | |
109 | AliTRDgtuParam(); // instance only via Instance() | |
110 | AliTRDgtuParam(const AliTRDgtuParam &rhs); // not implemented | |
111 | AliTRDgtuParam& operator=(const AliTRDgtuParam &rhs); // not implemented | |
112 | ||
113 | ClassDef(AliTRDgtuParam, 1); | |
114 | }; | |
115 | ||
116 | #endif |