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4c039060 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3bd79107 | 3 | * * |
4c039060 | 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 | $Log$ | |
7e3ded1b | 18 | Revision 1.12 2002/06/10 17:31:03 nilsen |
19 | Replaced TArrayI expansion with Root version. | |
20 | ||
ea008941 | 21 | Revision 1.11 2002/06/04 18:43:15 nilsen |
22 | Fix to avoid divide by zero problem in MedianHitG and MedianHitL for track | |
23 | that enter and exit the same side of a detector sensitive volume. Needed | |
24 | for Fast simulation. Thanks to Nicola Carrer. | |
25 | ||
37ffef26 | 26 | Revision 1.10 2002/03/15 17:21:54 nilsen |
27 | Removed zero-ing of fModules variable in constructors. | |
28 | ||
b0f0d5a5 | 29 | Revision 1.9 2000/10/04 19:46:39 barbera |
30 | Corrected by F. Carminati for v3.04 | |
31 | ||
114da3a4 | 32 | Revision 1.8 2000/10/02 16:32:57 barbera |
33 | Forward declarations added and formatting | |
34 | ||
0b2d41b4 | 35 | Revision 1.3.4.8 2000/10/02 15:55:26 barbera |
36 | Forward declarations added and formatting | |
37 | ||
38 | Revision 1.7 2000/09/22 12:36:38 nilsen | |
39 | Minor changes to improve compilation and create less NOISE. | |
40 | ||
ff61221e | 41 | Revision 1.6 2000/07/10 16:07:18 fca |
42 | Release version of ITS code | |
43 | ||
3bd79107 | 44 | Revision 1.3.4.2 2000/03/02 21:42:29 nilsen |
45 | Linked AliDetector::fDigit to AliITSmodule::fDigitsM and AliITS::fITSRecPoints | |
46 | to AliITSmodule::fRecPointsM. Renamed AliITSmodule::fPointsM to fRecPointsM. | |
47 | Removed the deletion of fDigitsM from the distructor since it is only a copy | |
48 | of what is in AliDetector. Fixed a bug in the functions LineSegmentL and | |
49 | LineSegmentG. Added two new versions of LineSegmentL and LineSegmentG to | |
50 | additionaly return track number from the hit. Removed FastPoint function, | |
51 | haven't found anywere it was used, also it had very many problems, should | |
52 | just call FastPointSPD... . | |
53 | ||
54 | Revision 1.3.4.1 2000/01/12 19:03:32 nilsen | |
55 | This is the version of the files after the merging done in December 1999. | |
56 | See the ReadMe110100.txt file for details | |
57 | ||
58 | Revision 1.3 1999/10/04 15:20:12 fca | |
59 | Correct syntax accepted by g++ but not standard for static members, remove minor warnings | |
60 | ||
ad0e60d9 | 61 | Revision 1.2 1999/09/29 09:24:20 fca |
62 | Introduction of the Copyright and cvs Log | |
63 | ||
4c039060 | 64 | */ |
65 | ||
ff61221e | 66 | #include <TArrayI.h> |
67 | ||
114da3a4 | 68 | #include <stdlib.h> |
3bd79107 | 69 | |
58005f18 | 70 | #include "AliRun.h" |
3bd79107 | 71 | #include "AliITS.h" |
ff61221e | 72 | #include "AliITShit.h" |
73 | #include "AliITSmodule.h" | |
74 | #include "AliITSgeom.h" | |
58005f18 | 75 | |
76 | ClassImp(AliITSmodule) | |
77 | ||
78 | //_______________________________________________________________________ | |
79 | // | |
80 | // Impementation of class AliITSmodule | |
81 | // | |
3bd79107 | 82 | // created by: A. Bouchm, W. Peryt, S. Radomski, P. Skowronski |
58005f18 | 83 | // R. Barbers, B. Batyunia, B. S. Nilsen |
84 | // ver 1.0 CERN 16.09.1999 | |
85 | //_______________________________________________________________________ | |
58005f18 | 86 | //________________________________________________________________________ |
87 | // | |
88 | // Constructors and deconstructor | |
89 | //________________________________________________________________________ | |
90 | // | |
3bd79107 | 91 | AliITSmodule::AliITSmodule() { |
b0f0d5a5 | 92 | // constructor |
93 | ||
3bd79107 | 94 | fHitsM = 0; |
95 | fTrackIndex = 0; | |
96 | fHitIndex = 0; | |
97 | fITS = 0; | |
58005f18 | 98 | |
3bd79107 | 99 | } |
100 | //_________________________________________________________________________ | |
101 | AliITSmodule::AliITSmodule(Int_t index) { | |
102 | // constructor | |
58005f18 | 103 | |
3bd79107 | 104 | fIndex = index; |
105 | fHitsM = new TObjArray(); | |
106 | fTrackIndex = new TArrayI(16); | |
107 | fHitIndex = new TArrayI(16); | |
108 | fITS = (AliITS*)(gAlice->GetDetector("ITS")); | |
109 | } | |
110 | //__________________________________________________________________________ | |
111 | AliITSmodule::~AliITSmodule() { | |
112 | // The destructor for AliITSmodule. Before destoring AliITSmodule | |
113 | // we must first destroy all of it's members. | |
58005f18 | 114 | |
3bd79107 | 115 | if(fHitsM){ |
e8189707 | 116 | for(Int_t i=0;i<fHitsM->GetEntriesFast();i++) |
3bd79107 | 117 | delete ((AliITShit *)(fHitsM->At(i))); |
118 | // must delete each object in the TObjArray. | |
119 | delete fHitsM; | |
120 | } // end if | |
121 | delete fTrackIndex; | |
122 | delete fHitIndex; | |
123 | fITS = 0; // We don't delete this pointer since it is just a copy. | |
124 | } | |
125 | //____________________________________________________________________________ | |
126 | AliITSmodule::AliITSmodule(const AliITSmodule &source){ | |
127 | //////////////////////////////////////////////////////////////////////// | |
128 | // Copy Constructor | |
129 | //////////////////////////////////////////////////////////////////////// | |
130 | printf("AliITSmodule error: AliITSmodule class has not to be copied! Exit.\n"); | |
131 | exit(1); | |
58005f18 | 132 | } |
133 | ||
3bd79107 | 134 | //_____________________________________________________________________________ |
135 | AliITSmodule& AliITSmodule::operator=(const AliITSmodule &source){ | |
136 | //////////////////////////////////////////////////////////////////////// | |
137 | // Assignment operator | |
138 | //////////////////////////////////////////////////////////////////////// | |
139 | printf("AliITSmodule error: AliITSmodule class has not to be copied! Exit.\n"); | |
140 | exit(1); | |
e8189707 | 141 | return *this; // fake return neded on Sun |
3bd79107 | 142 | } |
58005f18 | 143 | |
144 | //_________________________________________________________________________ | |
3bd79107 | 145 | // |
146 | // Hits management | |
147 | //__________________________________________________________________________ | |
148 | Int_t AliITSmodule::AddHit(AliITShit* hit,Int_t t,Int_t h) { | |
149 | // Hits management | |
58005f18 | 150 | |
ff61221e | 151 | //printf("AddHit: beginning hit %p t h %d %d\n",hit,t,h); |
3bd79107 | 152 | fHitsM->AddLast(new AliITShit(*hit)); |
153 | Int_t fNhitsM = fHitsM->GetEntriesFast(); | |
154 | if(fNhitsM-1>=fTrackIndex->GetSize()){ // need to expand the TArrayI | |
ea008941 | 155 | fTrackIndex->Set(fNhitsM+64); |
3bd79107 | 156 | } // end if |
157 | if(fNhitsM-1>=fHitIndex->GetSize()){ // need to expand the TArrayI | |
ea008941 | 158 | fHitIndex->Set(fNhitsM+64); |
3bd79107 | 159 | } // end if |
160 | (*fTrackIndex)[fNhitsM-1] = t; | |
161 | (*fHitIndex)[fNhitsM-1] = h; | |
162 | return fNhitsM; | |
163 | } | |
3bd79107 | 164 | //___________________________________________________________________________ |
165 | Double_t AliITSmodule::PathLength(Int_t index,AliITShit *itsHit1, | |
166 | AliITShit *itsHit2){ | |
167 | // path lenght | |
168 | Float_t x1g,y1g,z1g; | |
169 | Float_t x2g,y2g,z2g; | |
170 | Double_t s; | |
58005f18 | 171 | |
3bd79107 | 172 | itsHit1->GetPositionG(x1g,y1g,z1g); |
173 | itsHit2->GetPositionG(x2g,y2g,z2g); | |
58005f18 | 174 | |
3bd79107 | 175 | s = TMath::Sqrt( ((Double_t)(x2g-x1g)*(Double_t)(x2g-x1g)) + |
176 | ((Double_t)(y2g-y1g)*(Double_t)(y2g-y1g)) + | |
177 | ((Double_t)(z2g-z1g)*(Double_t)(z2g-z1g)) ); | |
178 | return s; | |
179 | } | |
180 | //___________________________________________________________________________ | |
181 | void AliITSmodule::PathLength(Int_t index, | |
182 | Float_t x,Float_t y,Float_t z, | |
183 | Int_t status,Int_t &nseg, | |
184 | Float_t &x1,Float_t &y1,Float_t &z1, | |
185 | Float_t &dx1,Float_t &dy1,Float_t &dz1, | |
186 | Int_t &flag){ | |
187 | // path length | |
188 | static Float_t x0,y0,z0; | |
58005f18 | 189 | |
7e3ded1b | 190 | if ((status&0x0002)!=0){ // entering |
3bd79107 | 191 | x0 = x; |
192 | y0 = y; | |
193 | z0 = z; | |
194 | nseg = 0; | |
195 | flag = 1; | |
196 | }else{ | |
197 | x1 = x0; | |
198 | y1 = y0; | |
199 | z1 = z0; | |
200 | dx1 = x-x1; | |
201 | dy1 = y-y1; | |
202 | dz1 = z-z1; | |
203 | nseg++; | |
7e3ded1b | 204 | if ((status&0x0004)!=0) flag = 0; //exiting |
205 | if ((status&0x0001)!=0) flag = 2; // inside | |
206 | else flag = 2; //inside ? | |
3bd79107 | 207 | x0 = x; |
208 | y0 = y; | |
209 | z0 = z; | |
210 | } // end if | |
58005f18 | 211 | } |
3bd79107 | 212 | //___________________________________________________________________________ |
213 | Bool_t AliITSmodule::LineSegmentL(Int_t hitindex,Double_t &a,Double_t &b, | |
214 | Double_t &c,Double_t &d, | |
215 | Double_t &e,Double_t &f,Double_t &de){ | |
216 | // line segment | |
217 | static Int_t hitindex0; | |
218 | AliITShit *h0,*h1; | |
58005f18 | 219 | |
3bd79107 | 220 | if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE; |
58005f18 | 221 | |
3bd79107 | 222 | h1 = (AliITShit *) (fHitsM->At(hitindex)); |
223 | if(h1->StatusEntering()){ // if track entering volume, get index for next | |
224 | // step | |
225 | hitindex0 = hitindex; | |
226 | return kFALSE; | |
227 | } // end if StatusEntering() | |
228 | // else stepping | |
229 | h0 = (AliITShit *) (fHitsM->At(hitindex0)); | |
230 | de = h1->GetIonization(); | |
231 | h0->GetPositionL(a,c,e); | |
232 | h1->GetPositionL(b,d,f); | |
233 | b = b - a; | |
234 | d = d - c; | |
235 | f = f - e; | |
236 | hitindex0 = hitindex; | |
237 | return kTRUE; | |
238 | } | |
239 | //___________________________________________________________________________ | |
240 | Bool_t AliITSmodule::LineSegmentG(Int_t hitindex,Double_t &a,Double_t &b, | |
241 | Double_t &c,Double_t &d, | |
242 | Double_t &e,Double_t &f,Double_t &de){ | |
243 | // line segment | |
244 | static Int_t hitindex0; | |
245 | AliITShit *h0,*h1; | |
58005f18 | 246 | |
3bd79107 | 247 | if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE; |
248 | ||
249 | h1 = (AliITShit *) (fHitsM->At(hitindex)); | |
250 | if(h1->StatusEntering()){ // if track entering volume, get index for next | |
251 | // step | |
252 | hitindex0 = hitindex; | |
253 | return kFALSE; | |
254 | } // end if StatusEntering() | |
255 | // else stepping | |
256 | h0 = (AliITShit *) (fHitsM->At(hitindex0)); | |
257 | de = h1->GetIonization(); | |
258 | h0->GetPositionG(a,c,e); | |
259 | h1->GetPositionG(b,d,f); | |
260 | b = b - a; | |
261 | d = d - c; | |
262 | f = f - e; | |
263 | hitindex0 = hitindex; | |
264 | return kTRUE; | |
265 | } | |
266 | //___________________________________________________________________________ | |
267 | Bool_t AliITSmodule::LineSegmentL(Int_t hitindex,Double_t &a,Double_t &b, | |
268 | Double_t &c,Double_t &d, | |
269 | Double_t &e,Double_t &f, | |
270 | Double_t &de,Int_t &track){ | |
271 | // line segmente | |
272 | static Int_t hitindex0; | |
273 | AliITShit *h0,*h1; | |
274 | ||
275 | if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE; | |
276 | ||
277 | h1 = (AliITShit *) (fHitsM->At(hitindex)); | |
278 | if(h1->StatusEntering()){ // if track entering volume, get index for next | |
279 | // step | |
280 | hitindex0 = hitindex; | |
281 | track = h1->GetTrack(); | |
282 | return kFALSE; | |
283 | } // end if StatusEntering() | |
284 | // else stepping | |
285 | h0 = (AliITShit *) (fHitsM->At(hitindex0)); | |
286 | de = h1->GetIonization(); | |
287 | h0->GetPositionL(a,c,e); | |
288 | h1->GetPositionL(b,d,f); | |
289 | b = b - a; | |
290 | d = d - c; | |
291 | f = f - e; | |
292 | hitindex0 = hitindex; | |
293 | track = h1->GetTrack(); | |
294 | return kTRUE; | |
295 | } | |
296 | //___________________________________________________________________________ | |
297 | Bool_t AliITSmodule::LineSegmentG(Int_t hitindex,Double_t &a,Double_t &b, | |
298 | Double_t &c,Double_t &d, | |
299 | Double_t &e,Double_t &f, | |
300 | Double_t &de,Int_t &track){ | |
301 | // line segment | |
302 | static Int_t hitindex0; | |
303 | AliITShit *h0,*h1; | |
304 | ||
305 | if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE; | |
306 | ||
307 | h1 = (AliITShit *) (fHitsM->At(hitindex)); | |
308 | if(h1->StatusEntering()){ // if track entering volume, get index for next | |
309 | // step | |
310 | hitindex0 = hitindex; | |
311 | track = h1->GetTrack(); | |
312 | return kFALSE; | |
313 | } // end if StatusEntering() | |
314 | // else stepping | |
315 | h0 = (AliITShit *) (fHitsM->At(hitindex0)); | |
316 | de = h1->GetIonization(); | |
317 | h0->GetPositionG(a,c,e); | |
318 | h1->GetPositionG(b,d,f); | |
319 | b = b - a; | |
320 | d = d - c; | |
321 | f = f - e; | |
322 | hitindex0 = hitindex; | |
323 | track = h1->GetTrack(); | |
324 | return kTRUE; | |
58005f18 | 325 | } |
7e3ded1b | 326 | //______________________________________________________________________ |
327 | Bool_t AliITSmodule::MedianHitG(AliITShit *h1,AliITShit *h2, | |
328 | Float_t &x,Float_t &y,Float_t &z){ | |
329 | // Computes the mean hit location for a set of hits that make up a track | |
330 | // passing through a volume. Returns kFALSE untill the the track leaves | |
331 | // the volume. | |
332 | // median hit | |
333 | AliITSgeom *gm = fITS->GetITSgeom(); | |
334 | Float_t x1l=0.,y1l=0.,z1l=0.; | |
335 | Float_t x2l=0.,y2l=0.,z2l=0.; | |
336 | Float_t xMl,yMl=0,zMl; | |
337 | Float_t l[3], g[3]; | |
338 | ||
339 | h1->GetPositionG(x1l,y1l,z1l); | |
340 | h2->GetPositionG(x2l,y2l,z2l); | |
341 | ||
342 | // Modified by N.Carrer. In very rare occasions the track may be just | |
343 | // tangent to the module. Therefore the entrance and exit points have the | |
344 | // same y. | |
345 | if( (y2l-y1l) != 0.0 ) { | |
346 | xMl = (-y1l / (y2l-y1l))*(x2l-x1l) + x1l; | |
347 | zMl = (-y1l / (y2l-y1l))*(z2l-z1l) + z1l; | |
348 | } else { | |
349 | xMl = 0.5*(x1l+x2l); | |
350 | zMl = 0.5*(z1l+z2l); | |
351 | } | |
352 | ||
353 | l[0] = xMl; | |
354 | l[1] = yMl; | |
355 | l[2] = zMl; | |
356 | gm->LtoG(h1->GetModule(),l,g); | |
357 | x = g[0]; | |
358 | y = g[1]; | |
359 | z = g[2]; | |
360 | return kTRUE; | |
361 | } | |
362 | //___________________________________________________________________________ | |
363 | void AliITSmodule::MedianHitG(Int_t index, | |
364 | Float_t hitx1,Float_t hity1,Float_t hitz1, | |
365 | Float_t hitx2,Float_t hity2,Float_t hitz2, | |
366 | Float_t &xMg, Float_t &yMg, Float_t &zMg){ | |
367 | // median hit | |
368 | AliITSgeom *gm = fITS->GetITSgeom(); | |
369 | Float_t x1l,y1l,z1l; | |
370 | Float_t x2l,y2l,z2l; | |
371 | Float_t xMl,yMl=0,zMl; | |
372 | Float_t l[3], g[3]; | |
373 | ||
374 | g[0] = hitx1; | |
375 | g[1] = hity1; | |
376 | g[2] = hitz1; | |
377 | gm->GtoL(index,g,l); | |
378 | x1l = l[0]; | |
379 | y1l = l[1]; | |
380 | z1l = l[2]; | |
381 | ||
382 | g[0] = hitx2; | |
383 | g[1] = hity2; | |
384 | g[2] = hitz2; | |
385 | gm->GtoL(index,g,l); | |
386 | x2l = l[0]; | |
387 | y2l = l[1]; | |
388 | z2l = l[2]; | |
389 | ||
390 | // Modified by N.Carrer. In very rare occasions the track may be just | |
391 | // tangent to the module. Therefore the entrance and exit points have the | |
392 | // same y. | |
393 | if( (y2l-y1l) != 0.0 ) { | |
394 | xMl = (-y1l / (y2l-y1l))*(x2l-x1l) + x1l; | |
395 | zMl = (-y1l / (y2l-y1l))*(z2l-z1l) + z1l; | |
396 | } else { | |
397 | xMl = 0.5*(x1l+x2l); | |
398 | zMl = 0.5*(z1l+z2l); | |
399 | } | |
400 | ||
401 | l[0] = xMl; | |
402 | l[1] = yMl; | |
403 | l[2] = zMl; | |
404 | gm->LtoG(index,l,g); | |
405 | xMg = g[0]; | |
406 | yMg = g[1]; | |
407 | zMg = g[2]; | |
408 | } | |
3bd79107 | 409 | //___________________________________________________________________________ |
7e3ded1b | 410 | Bool_t AliITSmodule::MedianHitL( AliITShit *itsHit1, |
3bd79107 | 411 | AliITShit *itsHit2, |
412 | Float_t &xMl, Float_t &yMl, Float_t &zMl){ | |
413 | // median hit | |
414 | Float_t x1l,y1l,z1l; | |
415 | Float_t x2l,y2l,z2l; | |
416 | ||
417 | itsHit1->GetPositionL(x1l,y1l,z1l); | |
418 | itsHit2->GetPositionL(x2l,y2l,z2l); | |
58005f18 | 419 | |
3bd79107 | 420 | yMl = 0.0; |
37ffef26 | 421 | // Modified by N.Carrer. In very rare occasions the track may be just |
422 | // tangent to the module. Therefore the entrance and exit points have the | |
423 | // same y. | |
424 | if( (y2l-y1l) != 0.0 ) { | |
425 | xMl = (-y1l / (y2l-y1l))*(x2l-x1l) + x1l; | |
426 | zMl = (-y1l / (y2l-y1l))*(z2l-z1l) + z1l; | |
427 | } else { | |
428 | xMl = 0.5*(x1l+x2l); | |
429 | zMl = 0.5*(z1l+z2l); | |
430 | } | |
7e3ded1b | 431 | return kTRUE; |
3bd79107 | 432 | } |
58005f18 | 433 | //___________________________________________________________________________ |
3bd79107 | 434 | void AliITSmodule::MedianHit(Int_t index, |
435 | Float_t xg,Float_t yg,Float_t zg, | |
436 | Int_t status, | |
437 | Float_t &xMg,Float_t &yMg,Float_t &zMg, | |
438 | Int_t &flag){ | |
439 | // median hit | |
440 | static Float_t x1,y1,z1; | |
441 | ||
7e3ded1b | 442 | if ((status&0x0002)!=0){ // entering |
3bd79107 | 443 | x1 = xg; |
444 | y1 = yg; | |
445 | z1 = zg; | |
446 | flag = 1; | |
7e3ded1b | 447 | } else if ((status&0x0004)!=0){ // exiting |
3bd79107 | 448 | MedianHitG(index,x1,y1,z1,xg,yg,zg,xMg,yMg,zMg); |
449 | flag = 0; | |
450 | } // end if | |
7e3ded1b | 451 | else flag = 1; |
58005f18 | 452 | } |
3bd79107 | 453 | //___________________________________________________________________________ |
454 | void AliITSmodule::GetID(Int_t &lay,Int_t &lad,Int_t &det){ | |
455 | // get ID | |
456 | fITS->GetITSgeom()->GetModuleId(fIndex,lay,lad,det); | |
457 | return ; | |
458 | } | |
459 |