]>
Commit | Line | Data |
---|---|---|
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 | $Log$ | |
edf34242 | 18 | Revision 1.5 2001/02/13 20:12:39 jbarbosa |
19 | Moved setting of variables to constructor. Init is now responsible for calculating padplane dimensions. | |
20 | ||
5a0c129b | 21 | Revision 1.4 2001/01/22 21:38:46 jbarbosa |
22 | Dummy padplane dimensions | |
23 | ||
485f496c | 24 | Revision 1.3 2000/10/03 21:44:09 morsch |
25 | Use AliSegmentation and AliHit abstract base classes. | |
26 | ||
a2f7eaf6 | 27 | Revision 1.2 2000/10/02 15:48:19 jbarbosa |
28 | Fixed coding conventions. | |
29 | ||
72e468a5 | 30 | Revision 1.1 2000/06/12 15:31:54 jbarbosa |
31 | Cleaned up version. | |
32 | ||
237c933d | 33 | */ |
34 | #include "AliRICHSegmentationV0.h" | |
35 | ||
36 | ||
37 | ClassImp(AliRICHSegmentationV0) | |
38 | ||
5a0c129b | 39 | //________________________________________________________________________________ |
40 | AliRICHSegmentationV0::AliRICHSegmentationV0() | |
41 | { | |
42 | ||
43 | // Default constructor for AliRICHSegmentationV0 (no dead zones) | |
44 | ||
45 | fNpx=144; | |
46 | fNpy=160; | |
47 | fDeadZone=0; | |
48 | fSector=-1; | |
edf34242 | 49 | fCorr = 0; |
5a0c129b | 50 | } |
51 | ||
a2f7eaf6 | 52 | void AliRICHSegmentationV0::Init(Int_t id) |
237c933d | 53 | { |
54 | ||
55 | // Initialisation of chambers | |
5a0c129b | 56 | |
57 | //printf("* Initialising SegmentationV0 (no dead zones) in chamber %d *\n",id+1); | |
237c933d | 58 | |
5a0c129b | 59 | // parametrised definition |
60 | ||
61 | Float_t csi_length = fNpy*fDpy + fDeadZone; | |
62 | Float_t csi_width = fNpx*fDpx + 2*fDeadZone; | |
63 | ||
64 | fPadPlane_Width = (csi_width - 2*fDeadZone)/3; | |
65 | fPadPlane_Length = (csi_length - fDeadZone)/2; | |
237c933d | 66 | } |
67 | ||
68 | ||
a2f7eaf6 | 69 | Float_t AliRICHSegmentationV0::GetAnod(Float_t xhit) const |
237c933d | 70 | { |
71 | ||
72 | // Get anod wire closer to hit | |
73 | ||
74 | Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5; | |
75 | return fWireD*wire; | |
76 | } | |
77 | ||
78 | void AliRICHSegmentationV0::SetPadSize(Float_t p1, Float_t p2) | |
79 | { | |
80 | ||
81 | // Set the pad size | |
82 | ||
83 | fDpx=p1; | |
84 | fDpy=p2; | |
85 | } | |
a2f7eaf6 | 86 | void AliRICHSegmentationV0::GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy) |
237c933d | 87 | { |
88 | // returns pad coordinates (ix,iy) for given real coordinates (x,y) | |
89 | // | |
90 | // Please check origin of pad numbering !!! | |
91 | ||
92 | ||
93 | ix = (x>0)? Int_t(x/fDpx)+1 : Int_t(x/fDpx); | |
94 | iy = (y>0)? Int_t(y/fDpy)+1 : Int_t(y/fDpy); | |
95 | if (iy > fNpy) iy= fNpy; | |
96 | if (iy < -fNpy) iy=-fNpy; | |
97 | if (ix > fNpx) ix= fNpx; | |
98 | if (ix < -fNpx) ix=-fNpx; | |
99 | } | |
100 | void AliRICHSegmentationV0:: | |
a2f7eaf6 | 101 | GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) |
237c933d | 102 | { |
103 | // returns real coordinates (x,y) for given pad coordinates (ix,iy) | |
104 | // | |
105 | ||
106 | x = (ix>0) ? Float_t(ix*fDpx)-fDpx/2. : Float_t(ix*fDpx)-fDpx/2.; | |
107 | y = (iy>0) ? Float_t(iy*fDpy)-fDpy/2. : Float_t(iy*fDpy)-fDpy/2.; | |
108 | } | |
109 | ||
110 | void AliRICHSegmentationV0:: | |
111 | SetHit(Float_t xhit, Float_t yhit) | |
112 | { | |
113 | // | |
114 | // Find the wire position (center of charge distribution) | |
115 | // Float_t x0a=GetAnod(xhit); | |
72e468a5 | 116 | fXhit=xhit; |
117 | fYhit=yhit; | |
237c933d | 118 | } |
119 | ||
120 | void AliRICHSegmentationV0:: | |
121 | SetPad(Int_t ix, Int_t iy) | |
122 | { | |
123 | ||
124 | // Move to pad ix, iy | |
125 | ||
a2f7eaf6 | 126 | GetPadC(ix,iy,fX,fY); |
237c933d | 127 | } |
128 | ||
129 | ||
130 | ||
131 | void AliRICHSegmentationV0:: | |
132 | FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy) | |
133 | { | |
134 | ||
135 | // | |
136 | // Find the wire position (center of charge distribution) | |
137 | Float_t x0a=GetAnod(xhit); | |
72e468a5 | 138 | fXhit=x0a; |
139 | fYhit=yhit; | |
237c933d | 140 | // |
141 | // and take fNsigma*sigma around this center | |
142 | Float_t x01=x0a - dx; | |
143 | Float_t x02=x0a + dx; | |
144 | Float_t y01=yhit - dy; | |
145 | Float_t y02=yhit + dy; | |
146 | // | |
147 | // find the pads over which the charge distributes | |
a2f7eaf6 | 148 | GetPadI(x01,y01,fIxmin,fIymin); |
149 | GetPadI(x02,y02,fIxmax,fIymax); | |
237c933d | 150 | // |
151 | // Set current pad to lower left corner | |
72e468a5 | 152 | fIx=fIxmin; |
153 | fIy=fIymin; | |
a2f7eaf6 | 154 | GetPadC(fIx,fIy,fX,fY); |
237c933d | 155 | |
156 | //if (fSector==2) | |
72e468a5 | 157 | //printf("fIx: %d, fIy: %d fX: %f, fY: %f\n",fIx,fIy,fX,fY); |
237c933d | 158 | } |
159 | ||
160 | void AliRICHSegmentationV0::NextPad() | |
161 | { | |
162 | //printf("\n Next Pad \n"); | |
163 | ||
164 | // | |
165 | // Step to next pad in integration region | |
72e468a5 | 166 | if (fIx <= fIxmax) { |
167 | // if (fIx==-1) fIx++; | |
168 | fIx++; | |
169 | } else if (fIy <= fIymax) { | |
170 | // if (fIy==-1) fIy++; | |
171 | fIx=fIxmin; | |
172 | fIy++; | |
237c933d | 173 | } else { |
174 | printf("\n Error: Stepping outside integration region\n "); | |
175 | } | |
a2f7eaf6 | 176 | GetPadC(fIx,fIy,fX,fY); |
237c933d | 177 | } |
178 | ||
179 | Int_t AliRICHSegmentationV0::MorePads() | |
180 | ||
181 | { | |
182 | // | |
183 | // Are there more pads in the integration region | |
184 | ||
185 | //printf("\n More Pads ? \n"); | |
186 | ||
187 | ||
72e468a5 | 188 | if (fIx >= fIxmax && fIy >= fIymax) { |
237c933d | 189 | //printf("There are no more pads\n\n\n\n\n"); |
190 | return 0; | |
191 | } else { | |
192 | //printf("There are more pads\n\n"); | |
193 | return 1; | |
194 | } | |
195 | } | |
196 | ||
197 | void AliRICHSegmentationV0::SigGenInit(Float_t x,Float_t y,Float_t) | |
198 | { | |
199 | // | |
200 | // Initialises pad and wire position during stepping | |
72e468a5 | 201 | fXt =x; |
202 | fYt =y; | |
a2f7eaf6 | 203 | GetPadI(x,y,fIxt,fIyt); |
72e468a5 | 204 | fIwt= (x>0) ? Int_t(x/fWireD)+1 : Int_t(x/fWireD)-1 ; |
237c933d | 205 | } |
206 | ||
207 | Int_t AliRICHSegmentationV0::SigGenCond(Float_t x,Float_t y,Float_t) | |
208 | { | |
209 | // | |
210 | // Signal will be generated if particle crosses pad boundary or | |
211 | // boundary between two wires. | |
212 | Int_t ixt, iyt; | |
a2f7eaf6 | 213 | GetPadI(x,y,ixt,iyt); |
237c933d | 214 | Int_t iwt=(x>0) ? Int_t(x/fWireD)+1 : Int_t(x/fWireD)-1; |
215 | ||
72e468a5 | 216 | if ((ixt != fIxt) || (iyt !=fIyt) || (iwt != fIwt)) { |
237c933d | 217 | return 1; |
218 | } else { | |
219 | return 0; | |
220 | } | |
221 | } | |
222 | void AliRICHSegmentationV0:: | |
223 | IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2) | |
224 | { | |
225 | ||
226 | // Calculate the integration limits | |
227 | ||
228 | /* | |
72e468a5 | 229 | x1=fXt-fX-fDpx/2.; |
237c933d | 230 | x2=x1+fDpx; |
72e468a5 | 231 | y1=fYt-fY-fDpy/2.; |
237c933d | 232 | y2=y1+fDpy; |
233 | */ | |
72e468a5 | 234 | x1=fXhit-fX-fDpx/2.; |
237c933d | 235 | x2=x1+fDpx; |
72e468a5 | 236 | y1=fYhit-fY-fDpy/2.; |
237c933d | 237 | y2=y1+fDpy; |
238 | } | |
239 | ||
240 | void AliRICHSegmentationV0:: | |
241 | Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[7], Int_t Ylist[7]) | |
242 | { | |
243 | //Is used for the cluster finder, include diagonal elements | |
244 | ||
245 | *Nlist=4;Xlist[0]=Xlist[1]=iX;Xlist[2]=iX-1;Xlist[3]=iX+1; | |
246 | Ylist[0]=iY-1;Ylist[1]=iY+1;Ylist[2]=Ylist[3]=iY; | |
247 | /* | |
248 | *Nlist=8; | |
249 | Xlist[0]=Xlist[1]=iX; | |
250 | Xlist[2]=iX-1; | |
251 | Xlist[3]=iX+1; | |
252 | Ylist[0]=iY-1; | |
253 | Ylist[1]=iY+1; | |
254 | Ylist[2]=Ylist[3]=iY; | |
255 | ||
256 | // Diagonal elements | |
257 | Xlist[4]=iX+1; | |
258 | Ylist[4]=iY+1; | |
259 | ||
260 | Xlist[5]=iX-1; | |
261 | Ylist[5]=iY-1; | |
262 | ||
263 | Xlist[6]=iX-1; | |
264 | Ylist[6]=iY+1; | |
265 | ||
266 | Xlist[7]=iX+1; | |
267 | Ylist[7]=iY-1; | |
268 | */ | |
269 | } | |
270 | ||
271 | Float_t AliRICHSegmentationV0::Distance2AndOffset(Int_t iX, Int_t iY, Float_t X, Float_t Y | |
272 | , Int_t *dummy) | |
273 | ||
274 | { | |
275 | // Returns the square of the distance between 1 pad | |
276 | // labelled by its Channel numbers and a coordinate | |
277 | ||
278 | Float_t x,y; | |
a2f7eaf6 | 279 | GetPadC(iX,iY,x,y); |
237c933d | 280 | return (x-X)*(x-X) + (y-Y)*(y-Y); |
281 | } | |
282 | ||
283 | ||
a2f7eaf6 | 284 | void AliRICHSegmentationV0::GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) const |
237c933d | 285 | { |
286 | ||
287 | // Test | |
288 | ||
289 | n=1; | |
290 | x[0]=0.; | |
291 | y[0]=x[0]; | |
292 | } | |
293 | ||
a2f7eaf6 | 294 | void AliRICHSegmentationV0::Draw(const char* opt) const |
237c933d | 295 | { |
296 | ||
297 | // Dummy draw routine | |
298 | ||
299 | /* | |
300 | TArc *circle; | |
301 | Float_t scale=0.95/fRmax/2.; | |
302 | ||
303 | ||
304 | circle = new TArc(0.5,0.5,fRmax*scale,0.,360.); | |
305 | circle->SetFillColor(2); | |
306 | circle->Draw(); | |
307 | ||
308 | circle = new TArc(0.5,0.5,fRmin*scale,0.,360.); | |
309 | circle->SetFillColor(1); | |
310 | circle->Draw(); | |
311 | */ | |
312 | ; | |
313 | ||
314 | } |