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4c039060 | 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 | $Log$ | |
18 | */ | |
19 | ||
a897a37a | 20 | ///////////////////////////////////////////////////// |
21 | // Segmentation and Response classes version 01 // | |
22 | ///////////////////////////////////////////////////// | |
23 | ||
24 | #include <TTUBE.h> | |
25 | #include <TNode.h> | |
26 | #include <TBox.h> | |
27 | #include <TRandom.h> | |
28 | ||
29 | #include "AliMUONSegResV01.h" | |
30 | #include "AliRun.h" | |
31 | #include "AliMC.h" | |
32 | #include "iostream.h" | |
33 | ||
34 | //___________________________________________ | |
35 | ClassImp(AliMUONsegmentationV01) | |
36 | ||
37 | Float_t AliMUONsegmentationV01::Dpx(Int_t isec) | |
38 | { | |
39 | return fDpxD[isec]; | |
40 | } | |
41 | ||
e3a4d40e | 42 | Float_t AliMUONsegmentationV01::Dpy(Int_t ) |
a897a37a | 43 | { |
44 | return fDpy; | |
45 | } | |
46 | ||
47 | AliMUONsegmentationV01::AliMUONsegmentationV01() | |
48 | { | |
49 | fNsec=4; | |
50 | fRSec.Set(fNsec); | |
51 | fNDiv.Set(fNsec); | |
52 | fDpxD.Set(fNsec); | |
53 | fRSec[0]=fRSec[1]=fRSec[2]=fRSec[3]=0; | |
54 | fNDiv[0]=fNDiv[1]=fNDiv[2]=fNDiv[3]=0; | |
55 | fDpxD[0]=fDpxD[1]=fDpxD[2]=fDpxD[3]=0; | |
56 | fCorr = new TObjArray(3); | |
57 | (*fCorr)[0]=0; | |
58 | (*fCorr)[1]=0; | |
59 | (*fCorr)[2]=0; | |
60 | } | |
61 | ||
62 | void AliMUONsegmentationV01::SetSegRadii(Float_t r[4]) | |
63 | { | |
64 | for (Int_t i=0; i<4; i++) { | |
65 | fRSec[i]=r[i]; | |
e3a4d40e | 66 | //printf("\n R %d %f \n",i,fRSec[i]); |
a897a37a | 67 | |
68 | } | |
69 | } | |
70 | ||
71 | ||
72 | void AliMUONsegmentationV01::SetPadDivision(Int_t ndiv[4]) | |
73 | { | |
74 | // | |
75 | // Defines the pad size perp. to the anode wire (y) for different sectors. | |
76 | // | |
77 | for (Int_t i=0; i<4; i++) { | |
78 | fNDiv[i]=ndiv[i]; | |
e3a4d40e | 79 | //printf("\n Ndiv %d %d \n",i,fNDiv[i]); |
a897a37a | 80 | } |
81 | ndiv[0]=ndiv[1]; | |
82 | } | |
83 | ||
84 | ||
e3a4d40e | 85 | void AliMUONsegmentationV01::Init(AliMUONchamber* ) |
a897a37a | 86 | { |
87 | // | |
88 | // Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector | |
89 | // These arrays help in converting from real to pad co-ordinates and | |
90 | // vice versa | |
91 | // | |
92 | Int_t isec; | |
e3a4d40e | 93 | //printf("\n Initialise segmentation v01 -- test !!!!!!!!!!!!!! \n"); |
a897a37a | 94 | fNpy=Int_t(fRSec[fNsec-1]/fDpy)+1; |
95 | ||
96 | fDpxD[fNsec-1]=fDpx; | |
97 | if (fNsec > 1) { | |
98 | for (Int_t i=fNsec-2; i>=0; i--){ | |
99 | fDpxD[i]=fDpxD[fNsec-1]/fNDiv[i]; | |
e3a4d40e | 100 | //printf("\n test ---dx %d %f \n",i,fDpxD[i]); |
a897a37a | 101 | } |
102 | } | |
103 | // | |
104 | // fill the arrays defining the pad segmentation boundaries | |
105 | Float_t ry; | |
106 | Int_t dnx; | |
107 | Int_t add; | |
108 | // | |
109 | // loop over sections | |
110 | for(isec=0; isec<fNsec; isec++) { | |
111 | // | |
112 | // loop over pads along the aode wires | |
113 | for (Int_t iy=1; iy<=fNpy; iy++) { | |
114 | // | |
115 | Float_t x=iy*fDpy-fDpy/2; | |
116 | if (x > fRSec[isec]) { | |
117 | fNpxS[isec][iy]=0; | |
118 | fCx[isec][iy]=0; | |
119 | } else { | |
120 | ry=TMath::Sqrt(fRSec[isec]*fRSec[isec]-x*x); | |
121 | if (isec > 1) { | |
122 | dnx= Int_t((ry-fCx[isec-1][iy])/fDpxD[isec]); | |
123 | if (isec < fNsec-1) { | |
124 | if (TMath::Odd((Long_t)dnx)) dnx++; | |
125 | } | |
126 | fNpxS[isec][iy]=fNpxS[isec-1][iy]+dnx; | |
127 | fCx[isec][iy]=fCx[isec-1][iy]+dnx*fDpxD[isec]; | |
128 | } else if (isec == 1) { | |
129 | dnx= Int_t((ry-fCx[isec-1][iy])/fDpxD[isec]); | |
130 | fNpxS[isec][iy]=fNpxS[isec-1][iy]+dnx; | |
131 | add=4 - (fNpxS[isec][iy])%4; | |
132 | if (add < 4) fNpxS[isec][iy]+=add; | |
133 | dnx=fNpxS[isec][iy]-fNpxS[isec-1][iy]; | |
134 | fCx[isec][iy]=fCx[isec-1][iy]+dnx*fDpxD[isec]; | |
135 | } else { | |
136 | dnx=Int_t(ry/fDpxD[isec]); | |
137 | fNpxS[isec][iy]=dnx; | |
138 | fCx[isec][iy]=dnx*fDpxD[isec]; | |
139 | } | |
140 | } | |
141 | } // y-pad loop | |
142 | } // sector loop | |
143 | // | |
144 | // for debugging only | |
145 | ||
e3a4d40e | 146 | //printf("segmentationv01 - I was here ! \n"); |
a897a37a | 147 | } |
148 | ||
149 | Int_t AliMUONsegmentationV01::Sector(Int_t ix, Int_t iy) | |
150 | { | |
151 | Int_t absix=TMath::Abs(ix); | |
152 | Int_t absiy=TMath::Abs(iy); | |
153 | Int_t isec=0; | |
154 | for (Int_t i=0; i<fNsec; i++) { | |
155 | if (absix<=fNpxS[i][absiy]){ | |
156 | isec=i; | |
157 | break; | |
158 | } | |
159 | } | |
160 | return isec; | |
161 | } | |
162 | ||
163 | void AliMUONsegmentationV01:: | |
164 | GetPadIxy(Float_t x, Float_t y, Int_t &ix, Int_t &iy) | |
165 | { | |
166 | // returns pad coordinates (ix,iy) for given real coordinates (x,y) | |
167 | // | |
168 | iy = (y>0)? Int_t(y/fDpy)+1 : Int_t(y/fDpy)-1; | |
169 | if (iy > fNpy) iy= fNpy; | |
170 | if (iy < -fNpy) iy=-fNpy; | |
171 | // | |
172 | // Find sector isec | |
173 | Int_t isec=-1; | |
174 | Float_t absx=TMath::Abs(x); | |
175 | Int_t absiy=TMath::Abs(iy); | |
176 | for (Int_t i=0; i < fNsec; i++) { | |
177 | if (absx <= fCx[i][absiy]) { | |
178 | isec=i; | |
179 | break; | |
180 | } | |
181 | } | |
182 | if (isec>0) { | |
183 | ix= Int_t((absx-fCx[isec-1][absiy])/fDpxD[isec]) | |
184 | +fNpxS[isec-1][absiy]+1; | |
185 | } else if (isec == 0) { | |
186 | ix= Int_t(absx/fDpxD[isec])+1; | |
187 | } else { | |
188 | ix=fNpxS[fNsec-1][absiy]+1; | |
189 | } | |
190 | // printf("\n something %d %d \n",isec,absiy); | |
191 | ||
192 | ix = (x>0) ? ix:-ix; | |
193 | } | |
194 | ||
195 | void AliMUONsegmentationV01:: | |
196 | GetPadCxy(Int_t ix, Int_t iy, Float_t &x, Float_t &y) | |
197 | { | |
198 | // returns real coordinates (x,y) for given pad coordinates (ix,iy) | |
199 | // | |
200 | y = (iy>0) ? Float_t(iy*fDpy)-fDpy/2. : Float_t(iy*fDpy)+fDpy/2.; | |
201 | // | |
202 | // Find sector isec | |
203 | Int_t isec=AliMUONsegmentationV01::Sector(ix,iy); | |
204 | // | |
205 | Int_t absix=TMath::Abs(ix); | |
206 | Int_t absiy=TMath::Abs(iy); | |
207 | if (isec) { | |
208 | x=fCx[isec-1][absiy]+(absix-fNpxS[isec-1][absiy])*fDpxD[isec]; | |
209 | x=(ix>0) ? x-fDpxD[isec]/2 : -x+fDpxD[isec]/2; | |
210 | } else { | |
211 | x=y=0; | |
212 | } | |
213 | } | |
214 | ||
215 | void AliMUONsegmentationV01:: | |
216 | SetPad(Int_t ix, Int_t iy) | |
217 | { | |
218 | GetPadCxy(ix,iy,fx,fy); | |
219 | fSector=Sector(ix,iy); | |
220 | } | |
221 | ||
222 | ||
223 | void AliMUONsegmentationV01:: | |
224 | FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy) | |
225 | { | |
226 | // | |
227 | // Find the wire position (center of charge distribution) | |
228 | Float_t x0a=GetAnod(xhit); | |
229 | fxhit=x0a; | |
230 | fyhit=yhit; | |
231 | ||
232 | // | |
233 | // and take fNsigma*sigma around this center | |
234 | Float_t x01=x0a - dx; | |
235 | Float_t x02=x0a + dx; | |
236 | Float_t y01=yhit - dy; | |
237 | Float_t y02=yhit + dy; | |
238 | // | |
239 | // find the pads over which the charge distributes | |
240 | GetPadIxy(x01,y01,fixmin,fiymin); | |
241 | GetPadIxy(x02,y02,fixmax,fiymax); | |
242 | fxmin=x01; | |
243 | fxmax=x02; | |
244 | fymin=y01; | |
245 | fymax=y02; | |
246 | ||
247 | // | |
248 | // Set current pad to lower left corner | |
249 | if (fixmax < fixmin) fixmax=fixmin; | |
250 | if (fiymax < fiymin) fiymax=fiymin; | |
251 | fix=fixmin; | |
252 | fiy=fiymin; | |
253 | GetPadCxy(fix,fiy,fx,fy); | |
254 | } | |
255 | ||
256 | ||
257 | void AliMUONsegmentationV01::NextPad() | |
258 | { | |
259 | // | |
260 | // Step to next pad in integration region | |
261 | Float_t xc,yc; | |
262 | Int_t iyc; | |
263 | ||
264 | // step from left to right | |
265 | if (fx < fxmax && fx != 0) { | |
266 | if (fix==-1) fix++; | |
267 | fix++; | |
268 | // step up | |
269 | } else if (fiy != fiymax) { | |
270 | if (fiy==-1) fiy++; | |
271 | fiy++; | |
272 | // get y-position of next row (yc), xc not used here | |
273 | GetPadCxy(fix,fiy,xc,yc); | |
274 | // get x-pad coordiante for 1 pad in row (fix) | |
275 | GetPadIxy(fxmin,yc,fix,iyc); | |
276 | } else { | |
277 | printf("\n Error: Stepping outside integration region\n "); | |
278 | } | |
279 | GetPadCxy(fix,fiy,fx,fy); | |
280 | fSector=Sector(fix,fiy); | |
281 | if (MorePads() && | |
282 | (fSector ==-1 || fSector==0 || | |
283 | TMath::Abs(fx)<1.5 || TMath::Abs(fy)<1.5)) | |
284 | NextPad(); | |
285 | ||
286 | // printf("\n this pad %f %f %d %d \n",fx,fy,fix,fiy); | |
287 | ||
288 | } | |
289 | ||
290 | Int_t AliMUONsegmentationV01::MorePads() | |
291 | // | |
292 | // Are there more pads in the integration region | |
293 | { | |
294 | if ((fx >= fxmax && fiy >= fiymax) || fy==0) { | |
295 | return 0; | |
296 | } else { | |
297 | return 1; | |
298 | } | |
299 | } | |
300 | ||
301 | void AliMUONsegmentationV01:: | |
302 | IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2) | |
303 | { | |
304 | x1=fxhit-fx-Dpx(fSector)/2.; | |
305 | x2=x1+Dpx(fSector); | |
306 | y1=fyhit-fy-Dpy(fSector)/2.; | |
307 | y2=y1+Dpy(fSector); | |
308 | } | |
309 | ||
310 | void AliMUONsegmentationV01:: | |
311 | Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]) | |
312 | { | |
313 | const Float_t epsilon=fDpy/1000; | |
314 | ||
315 | Float_t x,y; | |
316 | Int_t ixx, iyy, isec1; | |
317 | // | |
318 | Int_t isec0=AliMUONsegmentationV01::Sector(iX,iY); | |
319 | Int_t i=0; | |
320 | // | |
321 | // step right | |
322 | Xlist[i]=iX+1; | |
323 | Ylist[i++]=iY; | |
324 | // | |
325 | // step left | |
326 | Xlist[i]=iX-1; | |
327 | Ylist[i++]=iY; | |
328 | // | |
329 | // step up | |
330 | AliMUONsegmentationV01::GetPadCxy(iX,iY,x,y); | |
331 | AliMUONsegmentationV01::GetPadIxy(x+epsilon,y+fDpy,ixx,iyy); | |
332 | Xlist[i]=ixx; | |
333 | Ylist[i++]=iY+1; | |
334 | isec1=AliMUONsegmentationV01::Sector(ixx,iyy); | |
335 | if (isec1==isec0) { | |
336 | // | |
337 | // no sector boundary crossing | |
338 | Xlist[i]=ixx+1; | |
339 | Ylist[i++]=iY+1; | |
340 | ||
341 | Xlist[i]=ixx-1; | |
342 | Ylist[i++]=iY+1; | |
343 | } else if (isec1 < isec0) { | |
344 | // finer segmentation | |
345 | Xlist[i]=ixx+1; | |
346 | Ylist[i++]=iY+1; | |
347 | ||
348 | Xlist[i]=ixx-1; | |
349 | Ylist[i++]=iY+1; | |
350 | ||
351 | Xlist[i]=ixx-2; | |
352 | Ylist[i++]=iY+1; | |
353 | } else { | |
354 | // coarser segmenation | |
355 | ||
356 | if (TMath::Odd(iX-fNpxS[isec1-1][iY+1])) { | |
357 | Xlist[i]=ixx-1; | |
358 | Ylist[i++]=iY+1; | |
359 | } else { | |
360 | Xlist[i]=ixx+1; | |
361 | Ylist[i++]=iY+1; | |
362 | } | |
363 | } | |
364 | // | |
365 | // step down | |
366 | AliMUONsegmentationV01::GetPadCxy(iX,iY,x,y); | |
367 | AliMUONsegmentationV01::GetPadIxy(x+epsilon,y-fDpy,ixx,iyy); | |
368 | Xlist[i]=ixx; | |
369 | Ylist[i++]=iY-1; | |
370 | isec1=AliMUONsegmentationV01::Sector(ixx,iyy); | |
371 | if (isec1==isec0) { | |
372 | // | |
373 | // no sector boundary crossing | |
374 | Xlist[i]=ixx+1; | |
375 | Ylist[i++]=iY-1; | |
376 | ||
377 | Xlist[i]=ixx-1; | |
378 | Ylist[i++]=iY-1; | |
379 | } else if (isec1 < isec0) { | |
380 | // finer segmentation | |
381 | Xlist[i]=ixx+1; | |
382 | Ylist[i++]=iY-1; | |
383 | ||
384 | Xlist[i]=ixx-1; | |
385 | Ylist[i++]=iY-1; | |
386 | ||
387 | Xlist[i]=ixx-2; | |
388 | Ylist[i++]=iY-1; | |
389 | } else { | |
390 | // coarser segmentation | |
391 | ||
392 | if (TMath::Odd(iX-fNpxS[isec1-1][iY-1])) { | |
393 | Xlist[i]=ixx-1; | |
394 | Ylist[i++]=iY-1; | |
395 | } else { | |
396 | Xlist[i]=ixx+1; | |
397 | Ylist[i++]=iY-1; | |
398 | } | |
399 | ||
400 | } | |
401 | *Nlist=i; | |
402 | } | |
403 | ||
a897a37a | 404 | void AliMUONsegmentationV01::GiveTestPoints(Int_t &n, Float_t *x, Float_t *y) |
405 | { | |
406 | n=3; | |
407 | x[0]=(fRSec[0]+fRSec[1])/2/TMath::Sqrt(2.); | |
408 | y[0]=x[0]; | |
409 | x[1]=(fRSec[1]+fRSec[2])/2/TMath::Sqrt(2.); | |
410 | y[1]=x[1]; | |
411 | x[2]=(fRSec[2]+fRSec[3])/2/TMath::Sqrt(2.); | |
412 | y[2]=x[2]; | |
413 | } | |
414 | ||
e3a4d40e | 415 | void AliMUONsegmentationV01::Draw(Option_t *) |
a897a37a | 416 | { |
417 | TBox *box; | |
418 | ||
419 | Float_t dx=0.95/fCx[3][1]/2; | |
420 | Float_t dy=0.95/(Float_t(Npy()))/2; | |
421 | Float_t x0,y0,x1,y1; | |
422 | Float_t xc=0.5; | |
423 | Float_t yc=0.5; | |
424 | ||
425 | for (Int_t iy=1; iy<Npy(); iy++) | |
426 | { | |
427 | for (Int_t isec=0; isec<4; isec++) { | |
428 | if (isec==0) { | |
429 | x0=0; | |
430 | x1=fCx[isec][iy]*dx; | |
431 | } else { | |
432 | x0=fCx[isec-1][iy]*dx; | |
433 | x1=fCx[isec][iy]*dx; | |
434 | } | |
435 | y0=Float_t(iy-1)*dy; | |
436 | y1=y0+dy; | |
437 | box=new TBox(x0+xc,y0+yc,x1+xc,y1+yc); | |
438 | box->SetFillColor(isec+1); | |
439 | box->Draw(); | |
440 | ||
441 | box=new TBox(-x1+xc,y0+yc,-x0+xc,y1+yc); | |
442 | box->SetFillColor(isec+1); | |
443 | box->Draw(); | |
444 | ||
445 | box=new TBox(x0+xc,-y1+yc,x1+xc,-y0+yc); | |
446 | box->SetFillColor(isec+1); | |
447 | box->Draw(); | |
448 | ||
449 | box=new TBox(-x1+xc,-y1+yc,-x0+xc,-y0+yc); | |
450 | box->SetFillColor(isec+1); | |
451 | box->Draw(); | |
452 | } | |
453 | } | |
454 | } | |
455 | void AliMUONsegmentationV01::SetCorrFunc(Int_t isec, TF1* func) | |
456 | { | |
457 | (*fCorr)[isec]=func; | |
458 | ||
459 | } | |
460 | ||
461 | TF1* AliMUONsegmentationV01::CorrFunc(Int_t isec) | |
462 | { | |
463 | return (TF1*) (*fCorr)[isec]; | |
464 | } | |
465 |