Made method to obtain the transformations public. Required for event display
[u/mrichter/AliRoot.git] / FMD / AliFMDDetector.h
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1a1fdef7 1#ifndef ALIFMDDETECTOR_H
2#define ALIFMDDETECTOR_H
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 */
02a27b50 10//__________________________________________________________________
11//
12// Utility class to help implement the FMD geometry. This provides
13// the interface for the concrete geometry implementations of the FMD
14// sub-detectors.
c2fc1258 15/** @file AliFMDDetector.h
16 @author Christian Holm Christensen <cholm@nbi.dk>
17 @date Mon Mar 27 12:36:27 2006
18 @brief Sub-detector base class declaration
02a27b50 19 @ingroup FMD_base
c2fc1258 20*/
1a1fdef7 21#ifndef ROOT_TNamed
22# include <TNamed.h>
23#endif
24class AliFMDRing;
bf000c32 25class TGeoMatrix;
1a1fdef7 26
9f662337 27/** @defgroup FMD_base Basic classes */
1a1fdef7 28//__________________________________________________________________
c2fc1258 29/** @brief Base class for the geometry description and parameters of
30 the FMD sub detectors FMD1, FMD2, and FMD3.
1a1fdef7 31
32 This class hold common parameters of the specific FMD detectors.
9f662337 33 @ingroup FMD_base
1a1fdef7 34*/
35class AliFMDDetector : public TNamed
36{
37public:
9f662337 38 /** Constructor
39 @param id Detector number
40 @param inner Pointer to inner ring geometry
41 @param outer Pointer to inner outer geometry
42 @return */
1a1fdef7 43 AliFMDDetector(Int_t id, AliFMDRing* inner, AliFMDRing* outer);
9f662337 44 /** Copy CTOR
45 @param other Object to copy from. */
088f8e79 46 AliFMDDetector(const AliFMDDetector& other);
9f662337 47 /** Assignment operator
48 @param other Object to assign from
49 @return reference to this object */
088f8e79 50 AliFMDDetector& operator=(const AliFMDDetector& other);
1a1fdef7 51 virtual ~AliFMDDetector() {}
52 /** Initialize the geometry */
53 virtual void Init();
bf000c32 54 /** Find the transformations that correspond to modules of this
55 detector, and store them in the arrays. */
56 virtual void InitTransformations();
57
1a1fdef7 58 /** @param x Detector number */
59 void SetId(Int_t x) { fId = x; }
60 /** @param x Position of outer ring along z */
61 void SetInnerZ(Double_t x) { fInnerZ = x; }
62 /** @param x Position of outer ring along z */
63 void SetOuterZ(Double_t x) { fOuterZ = x; }
64 /** @param x Thickness of honeycomb plate */
65 void SetHoneycombThickness(Double_t x=1) { fHoneycombThickness = x; }
66 /** @param x Thickness of aluminium of honeycomb */
67 void SetAlThickness(Double_t x=.1) { fAlThickness = x; }
68 /** @param x Inner radius of inner honeycomb */
69 void SetInnerHoneyLowR(Double_t x) { fInnerHoneyLowR = x; }
70 /** @param x Outer radius of inner honeycomb */
71 void SetInnerHoneyHighR(Double_t x) { fInnerHoneyHighR = x; }
72 /** @param x Inner radius of outer honeycomb */
73 void SetOuterHoneyLowR(Double_t x) { fOuterHoneyLowR = x; }
74 /** @param x Outer radius of outer honeycomb */
75 void SetOuterHoneyHighR(Double_t x) { fOuterHoneyHighR = x; }
76
77 /** @return Detector number */
78 Int_t GetId() const { return fId; }
79 /** @return Position of outer ring along z */
80 Double_t GetInnerZ() const { return fInnerZ; }
81 /** @return Position of outer ring along z */
82 Double_t GetOuterZ() const { return fOuterZ; }
83 /** @return Thickness of honeycomb plate */
84 Double_t GetHoneycombThickness() const { return fHoneycombThickness; }
85 /** @return Thickness of aluminium of honeycomb */
86 Double_t GetAlThickness() const { return fAlThickness; }
87 /** @return Inner radius of inner honeycomb */
88 Double_t GetInnerHoneyLowR() const { return fInnerHoneyLowR; }
89 /** @return Outer radius of inner honeycomb */
90 Double_t GetInnerHoneyHighR() const { return fInnerHoneyHighR; }
91 /** @return Inner radius of outer honeycomb */
92 Double_t GetOuterHoneyLowR() const { return fOuterHoneyLowR; }
93 /** @return Outer radius of outer honeycomb */
94 Double_t GetOuterHoneyHighR() const { return fOuterHoneyHighR; }
95
96 /** @return Inner ring information */
97 AliFMDRing* GetInner() const { return fInner; }
98 /** @return Outer ring information */
99 AliFMDRing* GetOuter() const { return fOuter; }
100 /** @param id Id of ring to get
101 @return Pointer to ring, 0 on failure */
102 AliFMDRing* GetRing(Char_t id) const;
103 /** @param id Id of ring to get
104 @return Z position of ring or 0 on failure */
105 Double_t GetRingZ(Char_t id) const;
106
9f662337 107 /** Translate detector coordinates (detector, ring, sector, strip)
108 to spatial coordinates (x, y, z) in the master reference frame
109 of ALICE. The member function uses the transformations
110 previously obtained from the TGeoManager.
111 @param ring Ring id
112 @param sector Sector number
113 @param strip Strip number
114 @param x On return, X coordinate
115 @param y On return, Y coordinate
116 @param z On return, Z coordinate */
1a1fdef7 117 void Detector2XYZ(Char_t ring, UShort_t sector, UShort_t strip,
118 Double_t& x, Double_t& y, Double_t& z) const;
9f662337 119 /** Translate spatial coordinates (x,y,z) in the master reference
120 frame of ALICE to the detector coordinates (detector, ring,
121 sector, strip). Note, that if this method is to be used in
122 reconstruction or the like, then the input z-coordinate should
123 be corrected for the events interactions points z-coordinate,
124 like
125 @code
126 geom->XYZ2Detector(x,y,z-ipz,d,r,s,t);
f8616692 127 @endcode
9f662337 128 @param x X coordinate
129 @param y Y coordinate
130 @param z Z coordinate
131 @param ring On return, Ring id
132 @param sector On return, Sector number
133 @param strip On return, Strip number
134 @return @c false of (@a x, @a y, @a z) is not within this
135 detector. */
54e415a8 136 Bool_t XYZ2Detector(Double_t x, Double_t y, Double_t z,
137 Char_t& ring, UShort_t& sector, UShort_t& strip) const;
9de78b35 138
139 /** Declare alignable volumes */
140 virtual void SetAlignableVolumes() const;
d2d767c5 141 /** Get transformation matrix for a sector in a ring
142 @param ring Ring id
143 @param sector Sector numberr
144 @return Matrix on success, 0 otherwise */
145 TGeoMatrix* FindTransform(Char_t ring, UShort_t sector) const;
1a1fdef7 146protected:
9f662337 147 /** Check if we have all transformations for a ring
148 @param ring Ring to check for
149 @return @c true if we got all transforms */
bf000c32 150 Bool_t HasAllTransforms(Char_t ring) const;
d2d767c5 151
1a1fdef7 152 Int_t fId; // Detector number
153 Double_t fInnerZ; // Position of outer ring along z
154 Double_t fOuterZ; // Position of outer ring along z
155 Double_t fHoneycombThickness; // Thickness of honeycomb plate
156 Double_t fAlThickness; // Thickness of aluminium of honeycomb
157 Double_t fInnerHoneyLowR; // Inner radius of inner honeycomb
158 Double_t fInnerHoneyHighR; // Outer radius of inner honeycomb
159 Double_t fOuterHoneyLowR; // Inner radius of outer honeycomb
160 Double_t fOuterHoneyHighR; // Outer radius of outer honeycomb
161 AliFMDRing* fInner; // Pointer to inner ring information
162 AliFMDRing* fOuter; // Pointer to outer ring information
9f662337 163 TObjArray* fInnerTransforms; // List of inner module global
164 TObjArray* fOuterTransforms; // List of outer module global
bf000c32 165
1a1fdef7 166 ClassDef(AliFMDDetector, 1); //
167};
168
169#endif
170//____________________________________________________________________
171//
172// Local Variables:
173// mode: C++
174// End:
175//
176// EOF
177//