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1a1fdef7 | 1 | #ifndef ALIFMDGEOMETRY_H |
2 | #define ALIFMDGEOMETRY_H | |
088f8e79 | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights |
4 | * reserved. | |
5 | * | |
6 | * Latest changes by Christian Holm Christensen <cholm@nbi.dk> | |
7 | * | |
8 | * See cxx source for full Copyright notice | |
9 | */ | |
1a1fdef7 | 10 | //____________________________________________________________________ |
11 | // | |
69b696b9 | 12 | // Forward Multiplicity Detector based on Silicon wafers. |
13 | // | |
14 | // This class is a singleton that handles the geometry parameters of | |
15 | // the FMD detectors. | |
16 | // | |
1a1fdef7 | 17 | #ifndef ALIGEOMETRY_H |
18 | # include <AliGeometry.h> | |
19 | #endif | |
57c3c593 | 20 | #ifndef ROOT_TArrayI |
21 | # include <TArrayI.h> | |
22 | #endif | |
23 | #ifndef ROOT_TMatrixFfwd | |
24 | # include <TMatrixFfwd.h> | |
25 | #endif | |
26 | class TVector3; | |
1a1fdef7 | 27 | class TParticle; |
28 | class AliRecPoint; | |
29 | class AliFMDRing; | |
30 | class AliFMDDetector; | |
31 | class AliFMD1; | |
32 | class AliFMD2; | |
33 | class AliFMD3; | |
54e415a8 | 34 | class AliFMDGeometryBuilder; |
1a1fdef7 | 35 | |
36 | ||
37 | //__________________________________________________________________ | |
38 | /** Singleton object of FMD geometry descriptions and parameters. | |
9f662337 | 39 | This class is a singleton that handles the geometry parameters of |
40 | the FMD detectors. | |
41 | ||
42 | The actual code is done by various separate classes. Below is | |
43 | diagram showing the relationship between the various FMD classes | |
44 | that handles the geometry | |
45 | @verbatim | |
46 | +------------+ | |
47 | +- | AliFMDRing | | |
48 | 2 | +------------+ | |
49 | +----------------+<>--+ | | |
50 | | AliFMDGeometry | ^ | |
51 | +----------------+<>--+ V 1..2 | |
52 | 3 | +----------------+ | |
53 | +-| AliFMDDetector | | |
54 | +----------------+ | |
55 | ^ | |
56 | | | |
57 | +-------------+-------------+ | |
58 | | | | | |
59 | +---------+ +---------+ +---------+ | |
60 | | AliFMD1 | | AliFMD2 | | AliFMD3 | | |
61 | +---------+ +---------+ +---------+ | |
62 | ||
63 | @endverbatim | |
64 | - AliFMDRing | |
65 | This class contains all stuff needed to do with a ring. It's | |
66 | used by the AliFMDDetector objects to instantise inner and | |
67 | outer rings. The AliFMDRing objects are shared by the | |
68 | AliFMDDetector objects, and owned by the AliFMDv1 object. | |
69 | - AliFMD1, AliFMD2, and AliFMD3 | |
70 | These are specialisation of AliFMDDetector, that contains the | |
71 | particularities of each of the sub-detector system. It is | |
72 | envisioned that the classes should also define the support | |
73 | volumes and material for each of the detectors. | |
74 | ||
75 | @ingroup FMD_base | |
1a1fdef7 | 76 | */ |
77 | class AliFMDGeometry : public AliGeometry | |
78 | { | |
79 | public: | |
9f662337 | 80 | /** @return Singleton */ |
1a1fdef7 | 81 | static AliFMDGeometry* Instance(); |
9f662337 | 82 | /** Initialize */ |
1a1fdef7 | 83 | virtual void Init(); |
9f662337 | 84 | /** Initialize transforms */ |
bf000c32 | 85 | virtual void InitTransformations(); |
9f662337 | 86 | /** @return Get inner description */ |
1a1fdef7 | 87 | AliFMDRing* GetInner() const { return fInner; } |
9f662337 | 88 | /** @return Get outer description */ |
1a1fdef7 | 89 | AliFMDRing* GetOuter() const { return fOuter; } |
9f662337 | 90 | /** @return Get FMD1 description */ |
1a1fdef7 | 91 | AliFMD1* GetFMD1() const { return (fUseFMD1 ? fFMD1 : 0); } |
9f662337 | 92 | /** @return Get FMD2 description */ |
1a1fdef7 | 93 | AliFMD2* GetFMD2() const { return (fUseFMD2 ? fFMD2 : 0); } |
9f662337 | 94 | /** @return Get FMD3 description */ |
1a1fdef7 | 95 | AliFMD3* GetFMD3() const { return (fUseFMD3 ? fFMD3 : 0); } |
9f662337 | 96 | /** Get description of a sub-detector |
97 | @param i Sub-detector # | |
98 | @return Description of sub-detector, or 0 */ | |
1a1fdef7 | 99 | AliFMDDetector* GetDetector(Int_t i) const; |
9f662337 | 100 | /** Get description of a ring |
101 | @param i Ring id | |
102 | @return Description of ring, or 0 */ | |
1a1fdef7 | 103 | AliFMDRing* GetRing(Char_t i) const; |
9f662337 | 104 | /** @param i IF true, disable sub-detector @a i */ |
1a1fdef7 | 105 | void Disable(Int_t i); |
9f662337 | 106 | /** @param i IF true, enable sub-detector @a i */ |
1a1fdef7 | 107 | void Enable(Int_t i); |
9f662337 | 108 | /** @return Density @f$ \rho@f$ of silicon */ |
1a1fdef7 | 109 | Double_t GetSiDensity() const { return 2.33; } |
9f662337 | 110 | /** Translate detector coordinates (detector, ring, sector, strip) |
111 | to spatial coordinates (x, y, z) in the master reference frame | |
112 | of ALICE. The member function uses the transformations | |
113 | previously obtained from the TGeoManager. | |
114 | @param detector Detector number | |
115 | @param ring Ring id | |
116 | @param sector Sector number | |
117 | @param strip Strip number | |
118 | @param x On return, X coordinate | |
119 | @param y On return, Y coordinate | |
120 | @param z On return, Z coordinate */ | |
54e415a8 | 121 | void Detector2XYZ(UShort_t detector, Char_t ring, |
122 | UShort_t sector, UShort_t strip, | |
123 | Double_t& x, Double_t& y, Double_t& z) const; | |
9f662337 | 124 | /** Translate spatial coordinates (x,y,z) in the master reference |
125 | frame of ALICE to the detector coordinates (detector, ring, | |
126 | sector, strip). Note, that if this method is to be used in | |
127 | reconstruction or the like, then the input z-coordinate should | |
128 | be corrected for the events interactions points z-coordinate, | |
129 | like | |
130 | @code | |
131 | geom->XYZ2Detector(x,y,z-ipz,d,r,s,t); | |
132 | @endverbatim | |
133 | @param x X coordinate | |
134 | @param y Y coordinate | |
135 | @param z Z coordinate | |
136 | @param detector On return, Detector number | |
137 | @param ring On return, Ring id | |
138 | @param sector On return, Sector number | |
139 | @param strip On return, Strip number | |
140 | @return @c false of (@a x, @a y, @a z) is not within this | |
141 | detector. */ | |
54e415a8 | 142 | Bool_t XYZ2Detector(Double_t x, Double_t y, Double_t z, |
143 | UShort_t& detector, Char_t& ring, | |
144 | UShort_t& sector, UShort_t& strip) const; | |
9f662337 | 145 | /** Make the geometry. This delegates to AliFMDGeometryBuilder */ |
54e415a8 | 146 | void Build(); |
9f662337 | 147 | /** @return Get detector offset in paths */ |
54e415a8 | 148 | Int_t GetDetectorOff() const { return fDetectorOff; } |
9f662337 | 149 | /** @return Get sensor offset in paths */ |
54e415a8 | 150 | Int_t GetModuleOff() const { return fModuleOff; } |
9f662337 | 151 | /** @return Get ring offset in paths */ |
54e415a8 | 152 | Int_t GetRingOff() const { return fRingOff; } |
9f662337 | 153 | /** @return Get ring sector in paths */ |
54e415a8 | 154 | Int_t GetSectorOff() const { return fSectorOff; } |
9f662337 | 155 | /** @param off Detector off-set set in geometry path */ |
54e415a8 | 156 | void SetDetectorOff(Int_t off) { fDetectorOff = off; } |
9f662337 | 157 | /** @param off Module off-set set in geometry path */ |
54e415a8 | 158 | void SetModuleOff(Int_t off) { fModuleOff = off; } |
9f662337 | 159 | /** @param off Ring off-set set in geometry path */ |
54e415a8 | 160 | void SetRingOff(Int_t off) { fRingOff = off; } |
9f662337 | 161 | /** @param off Sectord off-set set in geometry path */ |
54e415a8 | 162 | void SetSectorOff(Int_t off) { fSectorOff = off; } |
9f662337 | 163 | /** Check if volume @a vol is marked as active |
164 | @param vol Volume ID | |
165 | @return @c true if @a vol is declared active */ | |
54e415a8 | 166 | Bool_t IsActive(Int_t vol) const; |
9f662337 | 167 | /** Set active volumes |
168 | @param active Active volume id array | |
169 | @param n elements of @a active */ | |
54e415a8 | 170 | void SetActive(Int_t* active, Int_t n); |
9f662337 | 171 | /** @param id Register volume @a id to be active */ |
54e415a8 | 172 | void AddActive(Int_t id); |
9f662337 | 173 | /** Set an external geometry builder |
174 | @param b Geometry builder */ | |
54e415a8 | 175 | void SetBuilder(AliFMDGeometryBuilder* b) { fBuilder = b; } |
9f662337 | 176 | /** Extract informaton from TGeoManager */ |
54e415a8 | 177 | void ExtractGeomInfo(); |
9f662337 | 178 | /** Whether we are to use a detailed geometry or not |
179 | @param det if @c true, make a detailed geometry. */ | |
54e415a8 | 180 | void SetDetailed(Bool_t det) { fDetailed = det; } |
9f662337 | 181 | /** @return @c true if geometry is detailed */ |
54e415a8 | 182 | Bool_t IsDetailed() const { return fDetailed; } |
9f662337 | 183 | /** @param ass Whether to use assemblies or not */ |
54e415a8 | 184 | void UseAssembly(Bool_t ass) { fUseAssembly = ass; } |
1a1fdef7 | 185 | |
186 | // AliGeometry member functions | |
9f662337 | 187 | /** Get global coordinates cooresponding to a rec point. |
188 | @param p Reconstructed point. | |
189 | @param pos On return, the position | |
190 | @param mat On return, the material at @a post */ | |
1a1fdef7 | 191 | virtual void GetGlobal(const AliRecPoint* p, TVector3& pos, |
e8d02863 | 192 | TMatrixF& mat) const; |
9f662337 | 193 | /** Get global coordinates cooresponding to a rec point. |
194 | @param p Reconstructed point. | |
195 | @param pos On return, the position */ | |
1a1fdef7 | 196 | virtual void GetGlobal(const AliRecPoint* p, TVector3& pos) const; |
9f662337 | 197 | /** Check if particle will hit an active detector element. Note |
198 | done yet. | |
199 | @param particle Track | |
200 | @return @c true if @a particle will hit this detector */ | |
1a1fdef7 | 201 | virtual Bool_t Impact(const TParticle* particle) const; |
202 | protected: | |
69b696b9 | 203 | Bool_t fIsInitialized; // Whether singleton is initalized |
1a1fdef7 | 204 | AliFMDRing* fInner; // Inner ring geometry information |
205 | AliFMDRing* fOuter; // Outer ring geometry information | |
206 | AliFMD1* fFMD1; // FMD1 geometry information | |
207 | AliFMD2* fFMD2; // FMD2 geometry information | |
208 | AliFMD3* fFMD3; // FMD3 geometry information | |
209 | Bool_t fUseFMD1; // Wheter to Use FMD1 or not | |
210 | Bool_t fUseFMD2; // Wheter to Use FMD2 or not | |
211 | Bool_t fUseFMD3; // Wheter to Use FMD3 or not | |
69b696b9 | 212 | static AliFMDGeometry* fgInstance; // Singleton instance |
9f662337 | 213 | /** CTOR */ |
1a1fdef7 | 214 | AliFMDGeometry(); |
9f662337 | 215 | /** Copy CTOR |
216 | @param other To copy from */ | |
69b696b9 | 217 | AliFMDGeometry(const AliFMDGeometry& other); |
9f662337 | 218 | /** Assignment operator |
219 | @param other To assig from | |
220 | @return reference to this. */ | |
69b696b9 | 221 | AliFMDGeometry& operator=(const AliFMDGeometry& other); |
1a1fdef7 | 222 | virtual ~AliFMDGeometry() {} |
69b696b9 | 223 | |
54e415a8 | 224 | AliFMDGeometryBuilder* fBuilder; |
225 | Int_t fDetectorOff; | |
226 | Int_t fModuleOff; | |
227 | Int_t fRingOff; | |
228 | Int_t fSectorOff; | |
229 | TArrayI fActive; | |
230 | Bool_t fDetailed; | |
231 | Bool_t fUseAssembly; | |
54e415a8 | 232 | |
1a1fdef7 | 233 | ClassDef(AliFMDGeometry,1); // |
234 | }; | |
235 | ||
236 | ||
237 | #endif | |
238 | //____________________________________________________________________ | |
239 | // | |
240 | // Local Variables: | |
241 | // mode: C++ | |
242 | // End: | |
243 | // | |
244 | // EOF | |
245 | // |