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237c933d | 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 | $Log$ | |
5a0c129b | 18 | Revision 1.4 2001/01/22 21:38:46 jbarbosa |
19 | Dummy padplane dimensions | |
20 | ||
485f496c | 21 | Revision 1.3 2000/10/03 21:44:09 morsch |
22 | Use AliSegmentation and AliHit abstract base classes. | |
23 | ||
a2f7eaf6 | 24 | Revision 1.2 2000/10/02 15:48:19 jbarbosa |
25 | Fixed coding conventions. | |
26 | ||
72e468a5 | 27 | Revision 1.1 2000/06/12 15:31:54 jbarbosa |
28 | Cleaned up version. | |
29 | ||
237c933d | 30 | */ |
31 | #include "AliRICHSegmentationV0.h" | |
32 | ||
33 | ||
34 | ClassImp(AliRICHSegmentationV0) | |
35 | ||
5a0c129b | 36 | //________________________________________________________________________________ |
37 | AliRICHSegmentationV0::AliRICHSegmentationV0() | |
38 | { | |
39 | ||
40 | // Default constructor for AliRICHSegmentationV0 (no dead zones) | |
41 | ||
42 | fNpx=144; | |
43 | fNpy=160; | |
44 | fDeadZone=0; | |
45 | fSector=-1; | |
46 | } | |
47 | ||
a2f7eaf6 | 48 | void AliRICHSegmentationV0::Init(Int_t id) |
237c933d | 49 | { |
50 | ||
51 | // Initialisation of chambers | |
5a0c129b | 52 | |
53 | //printf("* Initialising SegmentationV0 (no dead zones) in chamber %d *\n",id+1); | |
237c933d | 54 | |
5a0c129b | 55 | // parametrised definition |
56 | ||
57 | Float_t csi_length = fNpy*fDpy + fDeadZone; | |
58 | Float_t csi_width = fNpx*fDpx + 2*fDeadZone; | |
59 | ||
60 | fPadPlane_Width = (csi_width - 2*fDeadZone)/3; | |
61 | fPadPlane_Length = (csi_length - fDeadZone)/2; | |
237c933d | 62 | } |
63 | ||
64 | ||
a2f7eaf6 | 65 | Float_t AliRICHSegmentationV0::GetAnod(Float_t xhit) const |
237c933d | 66 | { |
67 | ||
68 | // Get anod wire closer to hit | |
69 | ||
70 | Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5; | |
71 | return fWireD*wire; | |
72 | } | |
73 | ||
74 | void AliRICHSegmentationV0::SetPadSize(Float_t p1, Float_t p2) | |
75 | { | |
76 | ||
77 | // Set the pad size | |
78 | ||
79 | fDpx=p1; | |
80 | fDpy=p2; | |
81 | } | |
a2f7eaf6 | 82 | void AliRICHSegmentationV0::GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy) |
237c933d | 83 | { |
84 | // returns pad coordinates (ix,iy) for given real coordinates (x,y) | |
85 | // | |
86 | // Please check origin of pad numbering !!! | |
87 | ||
88 | ||
89 | ix = (x>0)? Int_t(x/fDpx)+1 : Int_t(x/fDpx); | |
90 | iy = (y>0)? Int_t(y/fDpy)+1 : Int_t(y/fDpy); | |
91 | if (iy > fNpy) iy= fNpy; | |
92 | if (iy < -fNpy) iy=-fNpy; | |
93 | if (ix > fNpx) ix= fNpx; | |
94 | if (ix < -fNpx) ix=-fNpx; | |
95 | } | |
96 | void AliRICHSegmentationV0:: | |
a2f7eaf6 | 97 | GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) |
237c933d | 98 | { |
99 | // returns real coordinates (x,y) for given pad coordinates (ix,iy) | |
100 | // | |
101 | ||
102 | x = (ix>0) ? Float_t(ix*fDpx)-fDpx/2. : Float_t(ix*fDpx)-fDpx/2.; | |
103 | y = (iy>0) ? Float_t(iy*fDpy)-fDpy/2. : Float_t(iy*fDpy)-fDpy/2.; | |
104 | } | |
105 | ||
106 | void AliRICHSegmentationV0:: | |
107 | SetHit(Float_t xhit, Float_t yhit) | |
108 | { | |
109 | // | |
110 | // Find the wire position (center of charge distribution) | |
111 | // Float_t x0a=GetAnod(xhit); | |
72e468a5 | 112 | fXhit=xhit; |
113 | fYhit=yhit; | |
237c933d | 114 | } |
115 | ||
116 | void AliRICHSegmentationV0:: | |
117 | SetPad(Int_t ix, Int_t iy) | |
118 | { | |
119 | ||
120 | // Move to pad ix, iy | |
121 | ||
a2f7eaf6 | 122 | GetPadC(ix,iy,fX,fY); |
237c933d | 123 | } |
124 | ||
125 | ||
126 | ||
127 | void AliRICHSegmentationV0:: | |
128 | FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy) | |
129 | { | |
130 | ||
131 | // | |
132 | // Find the wire position (center of charge distribution) | |
133 | Float_t x0a=GetAnod(xhit); | |
72e468a5 | 134 | fXhit=x0a; |
135 | fYhit=yhit; | |
237c933d | 136 | // |
137 | // and take fNsigma*sigma around this center | |
138 | Float_t x01=x0a - dx; | |
139 | Float_t x02=x0a + dx; | |
140 | Float_t y01=yhit - dy; | |
141 | Float_t y02=yhit + dy; | |
142 | // | |
143 | // find the pads over which the charge distributes | |
a2f7eaf6 | 144 | GetPadI(x01,y01,fIxmin,fIymin); |
145 | GetPadI(x02,y02,fIxmax,fIymax); | |
237c933d | 146 | // |
147 | // Set current pad to lower left corner | |
72e468a5 | 148 | fIx=fIxmin; |
149 | fIy=fIymin; | |
a2f7eaf6 | 150 | GetPadC(fIx,fIy,fX,fY); |
237c933d | 151 | |
152 | //if (fSector==2) | |
72e468a5 | 153 | //printf("fIx: %d, fIy: %d fX: %f, fY: %f\n",fIx,fIy,fX,fY); |
237c933d | 154 | } |
155 | ||
156 | void AliRICHSegmentationV0::NextPad() | |
157 | { | |
158 | //printf("\n Next Pad \n"); | |
159 | ||
160 | // | |
161 | // Step to next pad in integration region | |
72e468a5 | 162 | if (fIx <= fIxmax) { |
163 | // if (fIx==-1) fIx++; | |
164 | fIx++; | |
165 | } else if (fIy <= fIymax) { | |
166 | // if (fIy==-1) fIy++; | |
167 | fIx=fIxmin; | |
168 | fIy++; | |
237c933d | 169 | } else { |
170 | printf("\n Error: Stepping outside integration region\n "); | |
171 | } | |
a2f7eaf6 | 172 | GetPadC(fIx,fIy,fX,fY); |
237c933d | 173 | } |
174 | ||
175 | Int_t AliRICHSegmentationV0::MorePads() | |
176 | ||
177 | { | |
178 | // | |
179 | // Are there more pads in the integration region | |
180 | ||
181 | //printf("\n More Pads ? \n"); | |
182 | ||
183 | ||
72e468a5 | 184 | if (fIx >= fIxmax && fIy >= fIymax) { |
237c933d | 185 | //printf("There are no more pads\n\n\n\n\n"); |
186 | return 0; | |
187 | } else { | |
188 | //printf("There are more pads\n\n"); | |
189 | return 1; | |
190 | } | |
191 | } | |
192 | ||
193 | void AliRICHSegmentationV0::SigGenInit(Float_t x,Float_t y,Float_t) | |
194 | { | |
195 | // | |
196 | // Initialises pad and wire position during stepping | |
72e468a5 | 197 | fXt =x; |
198 | fYt =y; | |
a2f7eaf6 | 199 | GetPadI(x,y,fIxt,fIyt); |
72e468a5 | 200 | fIwt= (x>0) ? Int_t(x/fWireD)+1 : Int_t(x/fWireD)-1 ; |
237c933d | 201 | } |
202 | ||
203 | Int_t AliRICHSegmentationV0::SigGenCond(Float_t x,Float_t y,Float_t) | |
204 | { | |
205 | // | |
206 | // Signal will be generated if particle crosses pad boundary or | |
207 | // boundary between two wires. | |
208 | Int_t ixt, iyt; | |
a2f7eaf6 | 209 | GetPadI(x,y,ixt,iyt); |
237c933d | 210 | Int_t iwt=(x>0) ? Int_t(x/fWireD)+1 : Int_t(x/fWireD)-1; |
211 | ||
72e468a5 | 212 | if ((ixt != fIxt) || (iyt !=fIyt) || (iwt != fIwt)) { |
237c933d | 213 | return 1; |
214 | } else { | |
215 | return 0; | |
216 | } | |
217 | } | |
218 | void AliRICHSegmentationV0:: | |
219 | IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2) | |
220 | { | |
221 | ||
222 | // Calculate the integration limits | |
223 | ||
224 | /* | |
72e468a5 | 225 | x1=fXt-fX-fDpx/2.; |
237c933d | 226 | x2=x1+fDpx; |
72e468a5 | 227 | y1=fYt-fY-fDpy/2.; |
237c933d | 228 | y2=y1+fDpy; |
229 | */ | |
72e468a5 | 230 | x1=fXhit-fX-fDpx/2.; |
237c933d | 231 | x2=x1+fDpx; |
72e468a5 | 232 | y1=fYhit-fY-fDpy/2.; |
237c933d | 233 | y2=y1+fDpy; |
234 | } | |
235 | ||
236 | void AliRICHSegmentationV0:: | |
237 | Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[7], Int_t Ylist[7]) | |
238 | { | |
239 | //Is used for the cluster finder, include diagonal elements | |
240 | ||
241 | *Nlist=4;Xlist[0]=Xlist[1]=iX;Xlist[2]=iX-1;Xlist[3]=iX+1; | |
242 | Ylist[0]=iY-1;Ylist[1]=iY+1;Ylist[2]=Ylist[3]=iY; | |
243 | /* | |
244 | *Nlist=8; | |
245 | Xlist[0]=Xlist[1]=iX; | |
246 | Xlist[2]=iX-1; | |
247 | Xlist[3]=iX+1; | |
248 | Ylist[0]=iY-1; | |
249 | Ylist[1]=iY+1; | |
250 | Ylist[2]=Ylist[3]=iY; | |
251 | ||
252 | // Diagonal elements | |
253 | Xlist[4]=iX+1; | |
254 | Ylist[4]=iY+1; | |
255 | ||
256 | Xlist[5]=iX-1; | |
257 | Ylist[5]=iY-1; | |
258 | ||
259 | Xlist[6]=iX-1; | |
260 | Ylist[6]=iY+1; | |
261 | ||
262 | Xlist[7]=iX+1; | |
263 | Ylist[7]=iY-1; | |
264 | */ | |
265 | } | |
266 | ||
267 | Float_t AliRICHSegmentationV0::Distance2AndOffset(Int_t iX, Int_t iY, Float_t X, Float_t Y | |
268 | , Int_t *dummy) | |
269 | ||
270 | { | |
271 | // Returns the square of the distance between 1 pad | |
272 | // labelled by its Channel numbers and a coordinate | |
273 | ||
274 | Float_t x,y; | |
a2f7eaf6 | 275 | GetPadC(iX,iY,x,y); |
237c933d | 276 | return (x-X)*(x-X) + (y-Y)*(y-Y); |
277 | } | |
278 | ||
279 | ||
a2f7eaf6 | 280 | void AliRICHSegmentationV0::GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) const |
237c933d | 281 | { |
282 | ||
283 | // Test | |
284 | ||
285 | n=1; | |
286 | x[0]=0.; | |
287 | y[0]=x[0]; | |
288 | } | |
289 | ||
a2f7eaf6 | 290 | void AliRICHSegmentationV0::Draw(const char* opt) const |
237c933d | 291 | { |
292 | ||
293 | // Dummy draw routine | |
294 | ||
295 | /* | |
296 | TArc *circle; | |
297 | Float_t scale=0.95/fRmax/2.; | |
298 | ||
299 | ||
300 | circle = new TArc(0.5,0.5,fRmax*scale,0.,360.); | |
301 | circle->SetFillColor(2); | |
302 | circle->Draw(); | |
303 | ||
304 | circle = new TArc(0.5,0.5,fRmin*scale,0.,360.); | |
305 | circle->SetFillColor(1); | |
306 | circle->Draw(); | |
307 | */ | |
308 | ; | |
309 | ||
310 | } |