Bug fix
[u/mrichter/AliRoot.git] / FMD / AliFMDDetector.h
CommitLineData
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; }
1a1fdef7 64 /** @param x Inner radius of inner honeycomb */
65 void SetInnerHoneyLowR(Double_t x) { fInnerHoneyLowR = x; }
66 /** @param x Outer radius of inner honeycomb */
67 void SetInnerHoneyHighR(Double_t x) { fInnerHoneyHighR = x; }
68 /** @param x Inner radius of outer honeycomb */
69 void SetOuterHoneyLowR(Double_t x) { fOuterHoneyLowR = x; }
70 /** @param x Outer radius of outer honeycomb */
71 void SetOuterHoneyHighR(Double_t x) { fOuterHoneyHighR = x; }
72
73 /** @return Detector number */
74 Int_t GetId() const { return fId; }
75 /** @return Position of outer ring along z */
76 Double_t GetInnerZ() const { return fInnerZ; }
77 /** @return Position of outer ring along z */
78 Double_t GetOuterZ() const { return fOuterZ; }
1a1fdef7 79 /** @return Inner radius of inner honeycomb */
80 Double_t GetInnerHoneyLowR() const { return fInnerHoneyLowR; }
81 /** @return Outer radius of inner honeycomb */
82 Double_t GetInnerHoneyHighR() const { return fInnerHoneyHighR; }
83 /** @return Inner radius of outer honeycomb */
84 Double_t GetOuterHoneyLowR() const { return fOuterHoneyLowR; }
85 /** @return Outer radius of outer honeycomb */
86 Double_t GetOuterHoneyHighR() const { return fOuterHoneyHighR; }
87
88 /** @return Inner ring information */
89 AliFMDRing* GetInner() const { return fInner; }
90 /** @return Outer ring information */
91 AliFMDRing* GetOuter() const { return fOuter; }
92 /** @param id Id of ring to get
93 @return Pointer to ring, 0 on failure */
94 AliFMDRing* GetRing(Char_t id) const;
95 /** @param id Id of ring to get
96 @return Z position of ring or 0 on failure */
97 Double_t GetRingZ(Char_t id) const;
98
9f662337 99 /** Translate detector coordinates (detector, ring, sector, strip)
100 to spatial coordinates (x, y, z) in the master reference frame
101 of ALICE. The member function uses the transformations
102 previously obtained from the TGeoManager.
103 @param ring Ring id
104 @param sector Sector number
105 @param strip Strip number
106 @param x On return, X coordinate
107 @param y On return, Y coordinate
108 @param z On return, Z coordinate */
1a1fdef7 109 void Detector2XYZ(Char_t ring, UShort_t sector, UShort_t strip,
110 Double_t& x, Double_t& y, Double_t& z) const;
9f662337 111 /** Translate spatial coordinates (x,y,z) in the master reference
112 frame of ALICE to the detector coordinates (detector, ring,
113 sector, strip). Note, that if this method is to be used in
114 reconstruction or the like, then the input z-coordinate should
115 be corrected for the events interactions points z-coordinate,
116 like
117 @code
118 geom->XYZ2Detector(x,y,z-ipz,d,r,s,t);
f8616692 119 @endcode
9f662337 120 @param x X coordinate
121 @param y Y coordinate
122 @param z Z coordinate
123 @param ring On return, Ring id
124 @param sector On return, Sector number
125 @param strip On return, Strip number
126 @return @c false of (@a x, @a y, @a z) is not within this
127 detector. */
54e415a8 128 Bool_t XYZ2Detector(Double_t x, Double_t y, Double_t z,
129 Char_t& ring, UShort_t& sector, UShort_t& strip) const;
9de78b35 130
131 /** Declare alignable volumes */
132 virtual void SetAlignableVolumes() const;
d2d767c5 133 /** Get transformation matrix for a sector in a ring
134 @param ring Ring id
135 @param sector Sector numberr
136 @return Matrix on success, 0 otherwise */
137 TGeoMatrix* FindTransform(Char_t ring, UShort_t sector) const;
1a1fdef7 138protected:
9f662337 139 /** Check if we have all transformations for a ring
140 @param ring Ring to check for
141 @return @c true if we got all transforms */
bf000c32 142 Bool_t HasAllTransforms(Char_t ring) const;
d2d767c5 143
1a1fdef7 144 Int_t fId; // Detector number
145 Double_t fInnerZ; // Position of outer ring along z
146 Double_t fOuterZ; // Position of outer ring along z
1a1fdef7 147 Double_t fInnerHoneyLowR; // Inner radius of inner honeycomb
148 Double_t fInnerHoneyHighR; // Outer radius of inner honeycomb
149 Double_t fOuterHoneyLowR; // Inner radius of outer honeycomb
150 Double_t fOuterHoneyHighR; // Outer radius of outer honeycomb
151 AliFMDRing* fInner; // Pointer to inner ring information
152 AliFMDRing* fOuter; // Pointer to outer ring information
9f662337 153 TObjArray* fInnerTransforms; // List of inner module global
154 TObjArray* fOuterTransforms; // List of outer module global
bf000c32 155
d98fbfa5 156 ClassDef(AliFMDDetector, 2); //
1a1fdef7 157};
158
159#endif
160//____________________________________________________________________
161//
162// Local Variables:
163// mode: C++
164// End:
165//
166// EOF
167//