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5de7d27f | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
70479d0e | 18 | Revision 1.4 2001/01/26 21:25:48 morsch |
19 | Empty default constructors and. | |
20 | ||
e9e4cdf2 | 21 | Revision 1.3 2000/10/22 16:55:43 morsch |
22 | Use only x-symmetry in global to local transformations and delegation. | |
23 | ||
2b202c2e | 24 | Revision 1.2 2000/10/09 14:06:18 morsch |
25 | Some type cast problems of type (TMath::Sign((Float_t)1.,x)) corrected (P.H.) | |
26 | ||
deba22dc | 27 | Revision 1.1 2000/10/06 09:00:47 morsch |
28 | Segmentation class for chambers built out of slats. | |
29 | ||
5de7d27f | 30 | */ |
31 | ||
32 | #include "AliMUONSegmentationSlatN.h" | |
33 | #include "AliMUONSegmentationSlatModuleN.h" | |
34 | #include "TArrayI.h" | |
35 | #include "TArrayF.h" | |
36 | #include "TObjArray.h" | |
37 | #include <TMath.h> | |
70479d0e | 38 | #include <Riostream.h> |
5de7d27f | 39 | |
40 | //___________________________________________ | |
41 | ClassImp(AliMUONSegmentationSlatN); | |
42 | ||
5de7d27f | 43 | AliMUONSegmentationSlatN::AliMUONSegmentationSlatN() |
44 | { | |
45 | // Default constructor | |
46 | } | |
47 | ||
48 | ||
e9e4cdf2 | 49 | AliMUONSegmentationSlatN::AliMUONSegmentationSlatN(Int_t nsec) |
50 | : AliMUONSegmentationSlat(nsec) | |
51 | { | |
52 | // Non default constructor | |
53 | } | |
54 | ||
55 | ||
5de7d27f | 56 | Float_t AliMUONSegmentationSlatN::Dpx(Int_t isec) const |
57 | { | |
58 | // | |
59 | // Returns y-pad size for given sector isec | |
60 | return fDpx; | |
61 | } | |
62 | ||
63 | Float_t AliMUONSegmentationSlatN::Dpy(Int_t isec) const | |
64 | { | |
65 | // | |
66 | // Returns x-pad size for given sector isec | |
67 | // isec = 100*islat+iregion | |
68 | // | |
69 | Int_t islat, iregion; | |
70 | islat = isec/100; | |
71 | iregion = isec%100; | |
72 | return Slat(islat)->Dpy(iregion); | |
73 | } | |
74 | ||
75 | ||
76 | ||
77 | void AliMUONSegmentationSlatN::GlobalToLocal( | |
78 | Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal) | |
79 | { | |
80 | // | |
81 | // Perform local to global transformation for pad coordinates | |
82 | // | |
2b202c2e | 83 | Int_t iytemp = iy; |
5de7d27f | 84 | Int_t index = 0; |
85 | ||
86 | iylocal = iytemp; | |
87 | ix=TMath::Abs(ix); | |
88 | ||
89 | // | |
90 | // Find slat number (index) and iylocal | |
91 | for (Int_t i=0; i<fNSlats; i++) { | |
92 | if (ix <= Slat(i)->Npx()) { | |
93 | Int_t isec=Slat(i)->Sector(ix,1); | |
94 | iytemp-=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1]; | |
95 | } | |
96 | if (iytemp <= 0) break; | |
97 | iylocal = iytemp; | |
98 | index=i+1; | |
99 | } | |
100 | ixlocal=ix; | |
101 | islat=index; | |
5de7d27f | 102 | } |
103 | ||
104 | void AliMUONSegmentationSlatN::LocalToGlobal( | |
105 | Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy) | |
106 | { | |
107 | // Local to global transformation for pad coordinates | |
108 | ||
109 | Int_t i; | |
110 | iy=iylocal; | |
111 | ||
112 | // | |
113 | // Find iy global by adding iy offset from slats below | |
114 | for (i=0; i<islat; i++) { | |
115 | if (ixlocal <= Slat(i)->Npx()) { | |
116 | Int_t isec=Slat(i)->Sector(ixlocal,1); | |
117 | iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1]; | |
118 | } | |
119 | } | |
120 | // | |
121 | // Perform symmetry transformation | |
2b202c2e | 122 | ix=ixlocal*fSym; |
5de7d27f | 123 | } |
124 | ||
125 | ||
126 | void AliMUONSegmentationSlatN:: | |
127 | GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy) | |
128 | { | |
129 | // Returns pad coordinates for given set of space coordinates | |
130 | ||
131 | Int_t islat, i; | |
132 | Float_t xlocal, ylocal; | |
133 | // Transform to local coordinates | |
134 | AliMUONSegmentationSlat::GlobalToLocal(x,y,z,islat,xlocal,ylocal); | |
135 | Slat(islat)->GetPadI(xlocal, ylocal, ix, iy); | |
136 | // add to local iy offfset from slats below | |
137 | for (i=0; i<islat; i++) { | |
138 | if (ix <= Slat(i)->Npx()) { | |
139 | Int_t isec=Slat(i)->Sector(ix,1); | |
140 | iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1]; | |
141 | } | |
142 | } | |
143 | // Determine sign depending on quadrant | |
deba22dc | 144 | ix=ix*Int_t(TMath::Sign((Float_t)1.,x)); |
5de7d27f | 145 | } |
146 | ||
147 | AliMUONSegmentationSlatModule* AliMUONSegmentationSlatN:: | |
148 | CreateSlatModule() | |
149 | { | |
150 | // Factory method for slat module | |
e9e4cdf2 | 151 | return new AliMUONSegmentationSlatModuleN(4); |
5de7d27f | 152 | } |
153 | ||
154 | ||
155 | ||
156 | ||
157 |