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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 | $Log$ | |
e9e4cdf2 | 18 | Revision 1.3 2000/10/22 16:55:43 morsch |
19 | Use only x-symmetry in global to local transformations and delegation. | |
20 | ||
2b202c2e | 21 | Revision 1.2 2000/10/09 14:06:18 morsch |
22 | Some type cast problems of type (TMath::Sign((Float_t)1.,x)) corrected (P.H.) | |
23 | ||
deba22dc | 24 | Revision 1.1 2000/10/06 09:00:47 morsch |
25 | Segmentation class for chambers built out of slats. | |
26 | ||
5de7d27f | 27 | */ |
28 | ||
29 | #include "AliMUONSegmentationSlatN.h" | |
30 | #include "AliMUONSegmentationSlatModuleN.h" | |
31 | #include "TArrayI.h" | |
32 | #include "TArrayF.h" | |
33 | #include "TObjArray.h" | |
34 | #include <TMath.h> | |
35 | #include <iostream.h> | |
36 | ||
37 | //___________________________________________ | |
38 | ClassImp(AliMUONSegmentationSlatN); | |
39 | ||
5de7d27f | 40 | AliMUONSegmentationSlatN::AliMUONSegmentationSlatN() |
41 | { | |
42 | // Default constructor | |
43 | } | |
44 | ||
45 | ||
e9e4cdf2 | 46 | AliMUONSegmentationSlatN::AliMUONSegmentationSlatN(Int_t nsec) |
47 | : AliMUONSegmentationSlat(nsec) | |
48 | { | |
49 | // Non default constructor | |
50 | } | |
51 | ||
52 | ||
5de7d27f | 53 | Float_t AliMUONSegmentationSlatN::Dpx(Int_t isec) const |
54 | { | |
55 | // | |
56 | // Returns y-pad size for given sector isec | |
57 | return fDpx; | |
58 | } | |
59 | ||
60 | Float_t AliMUONSegmentationSlatN::Dpy(Int_t isec) const | |
61 | { | |
62 | // | |
63 | // Returns x-pad size for given sector isec | |
64 | // isec = 100*islat+iregion | |
65 | // | |
66 | Int_t islat, iregion; | |
67 | islat = isec/100; | |
68 | iregion = isec%100; | |
69 | return Slat(islat)->Dpy(iregion); | |
70 | } | |
71 | ||
72 | ||
73 | ||
74 | void AliMUONSegmentationSlatN::GlobalToLocal( | |
75 | Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal) | |
76 | { | |
77 | // | |
78 | // Perform local to global transformation for pad coordinates | |
79 | // | |
2b202c2e | 80 | Int_t iytemp = iy; |
5de7d27f | 81 | Int_t index = 0; |
82 | ||
83 | iylocal = iytemp; | |
84 | ix=TMath::Abs(ix); | |
85 | ||
86 | // | |
87 | // Find slat number (index) and iylocal | |
88 | for (Int_t i=0; i<fNSlats; i++) { | |
89 | if (ix <= Slat(i)->Npx()) { | |
90 | Int_t isec=Slat(i)->Sector(ix,1); | |
91 | iytemp-=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1]; | |
92 | } | |
93 | if (iytemp <= 0) break; | |
94 | iylocal = iytemp; | |
95 | index=i+1; | |
96 | } | |
97 | ixlocal=ix; | |
98 | islat=index; | |
5de7d27f | 99 | } |
100 | ||
101 | void AliMUONSegmentationSlatN::LocalToGlobal( | |
102 | Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy) | |
103 | { | |
104 | // Local to global transformation for pad coordinates | |
105 | ||
106 | Int_t i; | |
107 | iy=iylocal; | |
108 | ||
109 | // | |
110 | // Find iy global by adding iy offset from slats below | |
111 | for (i=0; i<islat; i++) { | |
112 | if (ixlocal <= Slat(i)->Npx()) { | |
113 | Int_t isec=Slat(i)->Sector(ixlocal,1); | |
114 | iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1]; | |
115 | } | |
116 | } | |
117 | // | |
118 | // Perform symmetry transformation | |
2b202c2e | 119 | ix=ixlocal*fSym; |
5de7d27f | 120 | } |
121 | ||
122 | ||
123 | void AliMUONSegmentationSlatN:: | |
124 | GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy) | |
125 | { | |
126 | // Returns pad coordinates for given set of space coordinates | |
127 | ||
128 | Int_t islat, i; | |
129 | Float_t xlocal, ylocal; | |
130 | // Transform to local coordinates | |
131 | AliMUONSegmentationSlat::GlobalToLocal(x,y,z,islat,xlocal,ylocal); | |
132 | Slat(islat)->GetPadI(xlocal, ylocal, ix, iy); | |
133 | // add to local iy offfset from slats below | |
134 | for (i=0; i<islat; i++) { | |
135 | if (ix <= Slat(i)->Npx()) { | |
136 | Int_t isec=Slat(i)->Sector(ix,1); | |
137 | iy+=Slat(i)->Npy()*(*fNDiv)[isec]/(*fNDiv)[1]; | |
138 | } | |
139 | } | |
140 | // Determine sign depending on quadrant | |
deba22dc | 141 | ix=ix*Int_t(TMath::Sign((Float_t)1.,x)); |
5de7d27f | 142 | } |
143 | ||
144 | AliMUONSegmentationSlatModule* AliMUONSegmentationSlatN:: | |
145 | CreateSlatModule() | |
146 | { | |
147 | // Factory method for slat module | |
e9e4cdf2 | 148 | return new AliMUONSegmentationSlatModuleN(4); |
5de7d27f | 149 | } |
150 | ||
151 | ||
152 | ||
153 | ||
154 |