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1 | /************************************************************************** | |
2 | * Copyright(c) 2004, 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 | /* $Id$ */ | |
16 | /** @file AliFMDDetector.cxx | |
17 | @author Christian Holm Christensen <cholm@nbi.dk> | |
18 | @date Mon Mar 27 12:36:27 2006 | |
19 | @brief Sub-detector base class implementation | |
20 | @ingroup FMD_base | |
21 | */ | |
22 | ||
23 | //____________________________________________________________________ | |
24 | // | |
25 | // AliFMDDetector. | |
26 | // | |
27 | // Base class for concrete FMD detectors, like AliFMD1, AliFMD2, | |
28 | // AliFMD3. | |
29 | // Utility class to help implement the FMD geometry. This provides | |
30 | // the interface for the concrete geometry implementations of the FMD | |
31 | // sub-detectors. | |
32 | // | |
33 | // The AliFMDGeometry object owns the AliFMDDetector objects | |
34 | // | |
35 | // Latest changes by Christian Holm Christensen | |
36 | // | |
37 | ||
38 | #include <TGeoManager.h> // ROOT_TGeoManager | |
39 | #include <TGeoPhysicalNode.h> // ROOT_TGeoPhysicalNode | |
40 | #include <TGeoMatrix.h> // ROOT_TGeoMatrix | |
41 | #include <TMath.h> // ROOT_TMath | |
42 | ||
43 | #include "AliFMDDetector.h" // ALIFMDSUBDETECTOR_H | |
44 | #include "AliFMDRing.h" // ALIFMDRING_H | |
45 | #include "AliFMDDebug.h" // ALIFMDDEBUG_H ALILOG_H | |
46 | ||
47 | //==================================================================== | |
48 | ClassImp(AliFMDDetector) | |
49 | #if 0 | |
50 | ; // This is here to keep Emacs for indenting the next line | |
51 | #endif | |
52 | ||
53 | //____________________________________________________________________ | |
54 | AliFMDDetector::AliFMDDetector(Int_t id, AliFMDRing* inner, AliFMDRing* outer) | |
55 | : TNamed(Form("FMD%d", id), "Forward multiplicity ring"), | |
56 | fId(id), | |
57 | fInnerZ(0.), | |
58 | fOuterZ(0.), | |
59 | fInnerHoneyLowR(0.), | |
60 | fInnerHoneyHighR(0.), | |
61 | fOuterHoneyLowR(0.), | |
62 | fOuterHoneyHighR(0.), | |
63 | fInner(inner), | |
64 | fOuter(outer), | |
65 | fInnerTransforms(0), | |
66 | fOuterTransforms(0) | |
67 | { | |
68 | // Constructor | |
69 | // | |
70 | // ID Id of detector (1,2, or 3) | |
71 | // INNER Inner ring geometry | |
72 | // OUTER Outer ring geometry (if any) | |
73 | // | |
74 | SetInnerHoneyLowR(0); | |
75 | SetInnerHoneyHighR(0); | |
76 | SetInnerZ(0); | |
77 | SetOuterZ(0); | |
78 | SetOuterHoneyLowR(0); | |
79 | SetOuterHoneyHighR(0); | |
80 | } | |
81 | ||
82 | //____________________________________________________________________ | |
83 | AliFMDDetector::AliFMDDetector(const AliFMDDetector& other) | |
84 | : TNamed(other), | |
85 | fId(other.fId), | |
86 | fInnerZ(0.), | |
87 | fOuterZ(0.), | |
88 | fInnerHoneyLowR(0.), | |
89 | fInnerHoneyHighR(0.), | |
90 | fOuterHoneyLowR(0.), | |
91 | fOuterHoneyHighR(0.), | |
92 | fInner(other.fInner), | |
93 | fOuter(other.fOuter), | |
94 | fInnerTransforms(other.fInnerTransforms), | |
95 | fOuterTransforms(other.fOuterTransforms) | |
96 | { | |
97 | // Copy constructor | |
98 | SetInnerHoneyLowR(other.GetInnerHoneyLowR()); | |
99 | SetInnerHoneyHighR(other.GetInnerHoneyHighR()); | |
100 | SetInnerZ(other.GetInnerZ()); | |
101 | SetOuterZ(other.GetOuterZ()); | |
102 | SetOuterHoneyLowR(other.GetOuterHoneyLowR()); | |
103 | SetOuterHoneyHighR(other.GetOuterHoneyHighR()); | |
104 | } | |
105 | ||
106 | //____________________________________________________________________ | |
107 | AliFMDDetector& | |
108 | AliFMDDetector::operator=(const AliFMDDetector& other) | |
109 | { | |
110 | // Assignment operator | |
111 | if (&other == this) return *this; | |
112 | SetName(other.GetName()); | |
113 | SetTitle(other.GetTitle()); | |
114 | fId = other.fId; | |
115 | fInner = other.fInner; | |
116 | fOuter = other.fOuter; | |
117 | fInnerTransforms = other.fInnerTransforms; | |
118 | fOuterTransforms = other.fOuterTransforms; | |
119 | SetInnerHoneyLowR(other.GetInnerHoneyLowR()); | |
120 | SetInnerHoneyHighR(other.GetInnerHoneyHighR()); | |
121 | SetInnerZ(other.GetInnerZ()); | |
122 | SetOuterZ(other.GetOuterZ()); | |
123 | SetOuterHoneyLowR(other.GetOuterHoneyLowR()); | |
124 | SetOuterHoneyHighR(other.GetOuterHoneyHighR()); | |
125 | return *this; | |
126 | } | |
127 | ||
128 | //____________________________________________________________________ | |
129 | void | |
130 | AliFMDDetector::Init() | |
131 | { | |
132 | // Initialize. | |
133 | if (fInner) { | |
134 | SetInnerHoneyLowR(fInner->GetLowR() + 1.); | |
135 | SetInnerHoneyHighR(fInner->GetHighR() + 1.); | |
136 | } | |
137 | if (fOuter) { | |
138 | SetOuterHoneyLowR(fOuter->GetLowR() + 1.); | |
139 | SetOuterHoneyHighR(fOuter->GetHighR() + 1.); | |
140 | } | |
141 | } | |
142 | ||
143 | //____________________________________________________________________ | |
144 | Bool_t | |
145 | AliFMDDetector::HasAllTransforms(Char_t ring) const | |
146 | { | |
147 | // Check if we got all transformations for a given ring. Return | |
148 | // true in that case. | |
149 | AliFMDRing* r = GetRing(ring); | |
150 | if (!r) return kTRUE; | |
151 | TObjArray* matricies = (r == fInner ? fInnerTransforms : fOuterTransforms); | |
152 | if (!matricies) return kTRUE; | |
153 | if (matricies->GetEntries() == r->GetNModules()) return kTRUE; | |
154 | return kFALSE; | |
155 | } | |
156 | ||
157 | #define IS_NODE_THIS(name) \ | |
158 | (name[0] == 'F' && name[2] == 'M' && name[1] == Char_t(48+fId) && \ | |
159 | (name[3] == 'T' || name[3] == 'B')) | |
160 | #define IS_NODE_SENSOR(name) \ | |
161 | (name[0] == 'F' && (name[2] == 'B' || name[2] == 'F') && name[3] == 'H') | |
162 | //#define IS_NODE_SENSOR(name) | |
163 | // (name[0] == 'F' && name[2] == 'S' && name[3] == 'E') | |
164 | #define IS_NODE_HALF(name) \ | |
165 | (name[0] == 'F' && name[2] == 'M' && (name[3] == 'B' || name[3] == 'T')) | |
166 | #define HALF_FORMAT "FMD/FMD%d_%c" | |
167 | #define SENSOR_FORMAT "FMD/FMD%d_%c/FMD%c_%02d" | |
168 | ||
169 | //____________________________________________________________________ | |
170 | void | |
171 | AliFMDDetector::InitTransformations() | |
172 | { | |
173 | // Find all local<->global transformations for this detector. | |
174 | if ((!fInner || (fInner && fInnerTransforms)) && | |
175 | (!fOuter || (fOuter && fOuterTransforms))) { | |
176 | AliFMDDebug(5, ("Transforms for FMD%d already registered", fId)); | |
177 | return; | |
178 | } | |
179 | AliFMDDebug(5, ("Initializing transforms for FMD%d", fId)); | |
180 | if (!gGeoManager) { | |
181 | AliFatal("No TGeoManager defined"); | |
182 | return; | |
183 | } | |
184 | ||
185 | // Implementation using alignable volume names. | |
186 | // Make container of transforms | |
187 | if (fInner && !fInnerTransforms) | |
188 | fInnerTransforms = new TObjArray(fInner->GetNModules()); | |
189 | if (fOuter && !fOuterTransforms) | |
190 | fOuterTransforms = new TObjArray(fOuter->GetNModules()); | |
191 | ||
192 | // Loop over bottom/top | |
193 | for (size_t ihalf = 0; ihalf < 2; ihalf++) { | |
194 | char half = (ihalf == 0 ? 'T' : 'B'); | |
195 | TString path(Form(HALF_FORMAT, fId, half)); | |
196 | TGeoPNEntry* entry = gGeoManager->GetAlignableEntry(path.Data()); | |
197 | if (!entry) { | |
198 | AliError(Form("Alignable entry for half-detector \"%s\" not found!", | |
199 | path.Data())); | |
200 | continue; | |
201 | } | |
202 | TGeoPhysicalNode* pn = entry->GetPhysicalNode(); | |
203 | if (!pn) { | |
204 | AliWarning(Form("Making physical volume for \"%s\"", path.Data())); | |
205 | pn = gGeoManager->MakeAlignablePN(entry); | |
206 | if (!pn) { | |
207 | AliError(Form("No physical node for \"%s\"", path.Data())); | |
208 | continue; | |
209 | } | |
210 | } | |
211 | } | |
212 | ||
213 | // Loop over rings | |
214 | for (size_t iring = 0; iring < 2; iring++) { | |
215 | char ring = (iring == 0 ? 'I' : 'O'); | |
216 | TObjArray* trans = 0; | |
217 | AliFMDRing* r = 0; | |
218 | switch (ring) { | |
219 | case 'I': r = fInner; trans = fInnerTransforms; break; | |
220 | case 'O': r = fOuter; trans = fOuterTransforms; break; | |
221 | } | |
222 | if (!r || !trans) continue; | |
223 | ||
224 | Int_t nModules = r->GetNModules(); | |
225 | if (nModules <= 0) continue; | |
226 | ||
227 | // Loop over bottom/top | |
228 | for (size_t ihalf = 0; ihalf < 2; ihalf++) { | |
229 | char half = (ihalf == 0 ? 'T' : 'B'); | |
230 | Int_t base = (half == 'T' ? 0 : nModules / 2); | |
231 | ||
232 | // Loop over modules in this half ring | |
233 | for (Int_t imod = 0; imod < nModules / 2; imod++) { | |
234 | // Find physical node entry | |
235 | TString path(Form(SENSOR_FORMAT, fId, half, ring, base+imod)); | |
236 | TGeoPNEntry* entry = gGeoManager->GetAlignableEntry(path.Data()); | |
237 | if (!entry) { | |
238 | AliError(Form("Alignable entry for sensor \"%s\" not found!", | |
239 | path.Data())); | |
240 | continue; | |
241 | } | |
242 | TGeoPhysicalNode* pn = entry->GetPhysicalNode(); | |
243 | if (!pn) { | |
244 | AliWarning(Form("Making physical volume for \"%s\"", path.Data())); | |
245 | pn = gGeoManager->MakeAlignablePN(entry); | |
246 | if (!pn) { | |
247 | AliError(Form("No physical node for \"%s\"", path.Data())); | |
248 | continue; | |
249 | } | |
250 | } | |
251 | ||
252 | const TGeoMatrix* pm = pn->GetMatrix(); | |
253 | if (!pm) { | |
254 | AliError(Form("No matrix for path \"%s\"", path.Data())); | |
255 | continue; | |
256 | } | |
257 | // Get transformation matrix for this node, and store it. | |
258 | TGeoMatrix* t = new TGeoHMatrix(*pm); | |
259 | trans->AddAt(t, base+imod); | |
260 | AliFMDDebug(5, ("Found matrix for path \"%s\": %p",path.Data(),pm)); | |
261 | } | |
262 | } | |
263 | } | |
264 | if (HasAllTransforms('I') && HasAllTransforms('O')) return; | |
265 | ||
266 | // Alternative implementation using TGeoIter. | |
267 | TGeoVolume* topVolume = gGeoManager->GetTopVolume(); | |
268 | if (!topVolume) { | |
269 | AliFatal("No top-level volume defined"); | |
270 | return; | |
271 | } | |
272 | // Make an iterator | |
273 | TGeoIterator next(topVolume); | |
274 | TGeoNode* node = 0; | |
275 | ||
276 | // Find the node corresponding to this detector, and then find the | |
277 | // sensor volumes | |
278 | Bool_t thisNodeFound = kFALSE; | |
279 | Bool_t allInners = HasAllTransforms('I'); | |
280 | Bool_t allOuters = HasAllTransforms('O'); | |
281 | ||
282 | while ((node = static_cast<TGeoNode*>(next())) | |
283 | && !(allInners && allOuters)) { | |
284 | // Get nodes names | |
285 | const Char_t* name = node->GetName(); | |
286 | if (!name) continue; | |
287 | AliFMDDebug(50, ("Got volume %s", name)); | |
288 | // Check if this node is this detector | |
289 | // The base offset for numbers in the ASCII table is 48 | |
290 | if (IS_NODE_THIS(name)) { | |
291 | AliFMDDebug(20, ("Found detector node '%s' for FMD%d", name, fId)); | |
292 | thisNodeFound = kTRUE; | |
293 | } | |
294 | // if the detector was found, then we're on that branch, and we | |
295 | // check if this node represents a module in that branch. | |
296 | if (thisNodeFound && IS_NODE_SENSOR(name)) { | |
297 | AliFMDDebug(20, ("Found sensor node '%s' for FMD%d", name, fId)); | |
298 | // Get the ring Id. | |
299 | Char_t ringid = name[1]; | |
300 | ||
301 | // Get the approprate ring | |
302 | AliFMDRing* ring = GetRing(ringid); | |
303 | if (!ring) continue; | |
304 | ||
305 | // Check whether we have all the modules we need for this ring, | |
306 | // and if so, go on to the next node. | |
307 | Bool_t& done = (ring == fInner ? allInners : allOuters); | |
308 | if ((done = HasAllTransforms(ringid))) { | |
309 | AliFMDDebug(20, ("Already has all module transforms for ring %c", | |
310 | ringid)); | |
311 | continue; | |
312 | } | |
313 | ||
314 | // Get the approprate container | |
315 | TObjArray* matricies = (ringid == 'i' || ringid == 'I' | |
316 | ? fInnerTransforms : fOuterTransforms); | |
317 | ||
318 | // Get the copy (module) number, and check that it hasn't | |
319 | // already been added to the container. | |
320 | Int_t copy = node->GetNumber(); | |
321 | if (matricies->At(copy)) { | |
322 | AliWarning(Form("Have a transformation for module %d in ring %c", | |
323 | copy, ringid)); | |
324 | continue; | |
325 | } | |
326 | ||
327 | // Get the global transformation matrix, and store it. | |
328 | TGeoMatrix* trans = new TGeoHMatrix(*(next.GetCurrentMatrix())); | |
329 | matricies->AddAt(trans, copy); | |
330 | ||
331 | } | |
332 | } | |
333 | } | |
334 | ||
335 | //____________________________________________________________________ | |
336 | void | |
337 | AliFMDDetector::SetAlignableVolumes() const | |
338 | { | |
339 | // Set alignable volumes. | |
340 | // This will define the alignable volumes. | |
341 | // That is currently, the modules and the half-rings. | |
342 | ||
343 | AliFMDDebug(10, ("Making alignable volumes for FMD%d", fId)); | |
344 | if (!gGeoManager) { | |
345 | AliFatal("No TGeoManager defined"); | |
346 | return; | |
347 | } | |
348 | TGeoVolume* topVolume = gGeoManager->GetTopVolume(); | |
349 | if (!topVolume) { | |
350 | AliFatal("No top-level volume defined"); | |
351 | return; | |
352 | } | |
353 | ||
354 | // Make an iterator | |
355 | TGeoIterator next(topVolume); | |
356 | next.Reset(topVolume); | |
357 | next.SetTopName(Form("/%s_1", topVolume->GetName())); | |
358 | TGeoNode* node = 0; | |
359 | ||
360 | Int_t nInnerSensor = (fInner ? fInner->GetNModules() : 0); | |
361 | Int_t nOuterSensor = (fOuter ? fOuter->GetNModules() : 0); | |
362 | // Find the node corresponding to this detector, and then find the | |
363 | // sensor volumes | |
364 | Bool_t thisNodeFound = kFALSE; | |
365 | Char_t thisHalf = '\0'; | |
366 | Int_t iInnerSensor = 0; | |
367 | Int_t iOuterSensor = 0; | |
368 | Bool_t hasTop = false; | |
369 | Bool_t hasBottom = false; | |
370 | ||
371 | TString path, align; | |
372 | while ((node = static_cast<TGeoNode*>(next())) | |
373 | && (iInnerSensor < nInnerSensor || iOuterSensor < nOuterSensor | |
374 | || !hasBottom || !hasTop)) { | |
375 | // Get nodes names | |
376 | const Char_t* name = node->GetName(); | |
377 | if (!name) continue; | |
378 | AliFMDDebug((name[0] == 'F' ? 40 : 50), ("Got volume %s", name)); | |
379 | // Check if this node is this detector | |
380 | // The base offset for numbers in the ASCII table is 48 | |
381 | if (IS_NODE_THIS(name)) { | |
382 | AliFMDDebug(20, ("Found detector node '%s' for FMD%d", name, fId)); | |
383 | thisNodeFound = kTRUE; | |
384 | } | |
385 | ||
386 | // if a half ring is found, then we're on that branch, and we | |
387 | // check if this node represents a half ring on that branch | |
388 | if (thisNodeFound && IS_NODE_HALF(name)) { | |
389 | AliFMDDebug(30, ("Found half node '%s' for FMD%d", name, fId)); | |
390 | // Get the half Id. | |
391 | thisHalf = name[3]; | |
392 | ||
393 | // Check if we're done | |
394 | Bool_t done = (thisHalf == 'T' ? hasTop : hasBottom); | |
395 | if (done) { | |
396 | AliFMDDebug(20, ("Already has all halves for detector %c",name[1])); | |
397 | continue; | |
398 | } | |
399 | ||
400 | switch (thisHalf) { | |
401 | case 'T': hasTop = true; break; | |
402 | case 'B': hasBottom = true; break; | |
403 | default: | |
404 | AliWarning(Form("Unknown part '%c' of FMD%d", thisHalf, fId)); | |
405 | continue; // because the node is unknown. | |
406 | } | |
407 | ||
408 | // Get the node path | |
409 | next.GetPath(path); | |
410 | align = Form(HALF_FORMAT, fId, thisHalf); | |
411 | } | |
412 | ||
413 | // if the detector was found, then we're on that branch, and we | |
414 | // check if this node represents a module in that branch. | |
415 | if (thisNodeFound && thisHalf && IS_NODE_SENSOR(name)) { | |
416 | AliFMDDebug(30, ("Found sensor node '%s' for FMD%d", name, fId)); | |
417 | // Get the ring Id. | |
418 | Char_t ringid = name[1]; | |
419 | ||
420 | // check that the ring is valid | |
421 | if (!GetRing(ringid)) { | |
422 | AliWarning(Form("Invalid ring %c for FMD%d", ringid, fId)); | |
423 | continue; | |
424 | } | |
425 | ||
426 | // Check if we're done | |
427 | Bool_t done = false; | |
428 | switch (ringid) { | |
429 | case 'I': done = iInnerSensor >= nInnerSensor; break; | |
430 | case 'O': done = iOuterSensor >= nOuterSensor; break; | |
431 | default: continue; | |
432 | } | |
433 | if (done) { | |
434 | AliFMDDebug(20, ("Already has all sensor volumes for ring %c",ringid)); | |
435 | continue; | |
436 | } | |
437 | // Get the copy (module) number, and check that it hasn't | |
438 | // already been added to the container. | |
439 | Int_t copy = node->GetNumber(); | |
440 | next.GetPath(path); | |
441 | // path.Replace("ALIC", "/ALIC_1"); | |
442 | align = Form(SENSOR_FORMAT, fId, thisHalf, ringid, copy); | |
443 | ||
444 | switch (ringid) { | |
445 | case 'I': iInnerSensor++; break; | |
446 | case 'O': iOuterSensor++; break; | |
447 | } | |
448 | } | |
449 | if (!align.IsNull() && !path.IsNull()) { | |
450 | AliFMDDebug(20, ("Got %s -> %s", path.Data(), align.Data())); | |
451 | TGeoPNEntry* entry = | |
452 | gGeoManager->SetAlignableEntry(align.Data(),path.Data()); | |
453 | if(!entry) | |
454 | AliFatal(Form("Alignable entry %s not created. " | |
455 | "Volume path %s not valid", | |
456 | align.Data(),path.Data())); | |
457 | #ifdef MAKE_ALIGNABLE_PHYSICAL | |
458 | TGeoPhysicalNode* phys = gGeoManager->MakeAlignablePN(entry); | |
459 | if (!phys) | |
460 | AliWarning(Form("Physical node entry %s not created. " | |
461 | "Volume path %s not valid", | |
462 | align.Data(),path.Data())); | |
463 | #endif | |
464 | align = ""; | |
465 | } | |
466 | AliFMDDebug(20, ("FMD%d: top: %d bottom: %d Inner: %d/%d Outer %d/%d", | |
467 | fId, hasTop, hasBottom, iInnerSensor, nInnerSensor, | |
468 | iOuterSensor, nOuterSensor)); | |
469 | } | |
470 | } | |
471 | ||
472 | ||
473 | ||
474 | //____________________________________________________________________ | |
475 | AliFMDRing* | |
476 | AliFMDDetector::GetRing(Char_t id) const | |
477 | { | |
478 | // Get the specified ring | |
479 | // | |
480 | // ID Id of ring ('I' or 'O') | |
481 | // | |
482 | switch (id) { | |
483 | case 'i': | |
484 | case 'I': return GetInner(); | |
485 | case 'o': | |
486 | case 'O': return GetOuter(); | |
487 | } | |
488 | return 0; | |
489 | } | |
490 | ||
491 | //____________________________________________________________________ | |
492 | Double_t | |
493 | AliFMDDetector::GetRingZ(Char_t id) const | |
494 | { | |
495 | // Get the z-coordinate specified ring | |
496 | // | |
497 | // ID Id of ring ('I' or 'O') | |
498 | // | |
499 | switch (id) { | |
500 | case 'i': | |
501 | case 'I': return GetInnerZ(); | |
502 | case 'o': | |
503 | case 'O': return GetOuterZ(); | |
504 | } | |
505 | return 0; | |
506 | } | |
507 | ||
508 | //____________________________________________________________________ | |
509 | TGeoMatrix* | |
510 | AliFMDDetector::FindTransform(Char_t ring, UShort_t sector) const | |
511 | { | |
512 | // Find the transformation that corresponds to sector sector in ring | |
513 | // ring. | |
514 | TObjArray* matricies = 0; | |
515 | switch (ring) { | |
516 | case 'i': case 'I': matricies = fInnerTransforms; break; | |
517 | case 'o': case 'O': matricies = fOuterTransforms; break; | |
518 | } | |
519 | if (!matricies) { | |
520 | AliWarning(Form("Unknown ring %c of FMD%d", ring, fId)); | |
521 | return 0; | |
522 | } | |
523 | UInt_t module = sector / 2; | |
524 | TGeoMatrix* m = static_cast<TGeoMatrix*>(matricies->At(module)); | |
525 | if (!m) { | |
526 | AliWarning(Form("No matrix found for sector %d in FMD%d%c", | |
527 | sector, fId, ring)); | |
528 | return 0; | |
529 | } | |
530 | return m; | |
531 | } | |
532 | ||
533 | ||
534 | //____________________________________________________________________ | |
535 | void | |
536 | AliFMDDetector::Detector2XYZ(Char_t ring, | |
537 | UShort_t sector, | |
538 | UShort_t strip, | |
539 | Double_t& x, | |
540 | Double_t& y, | |
541 | Double_t& z) const | |
542 | { | |
543 | // Translate detector coordinates (this,ring,sector,strip) into | |
544 | // (x,y,z) coordinates (in global reference frame) | |
545 | AliFMDRing* r = GetRing(ring); | |
546 | if (!r) { | |
547 | AliWarning(Form("No such ring FMD%d%c ", fId, ring)); | |
548 | return; | |
549 | } | |
550 | TGeoMatrix* m = FindTransform(ring, sector); | |
551 | if (!m) { | |
552 | AliWarning(Form("No transfrmation found for FMD%d%c[%02d]", | |
553 | fId, ring, sector)); | |
554 | return; | |
555 | } | |
556 | Double_t rho = r->GetStripRadius(strip); | |
557 | Double_t phi = ((sector % 2) - .5) * r->GetTheta(); | |
558 | Double_t siThick = r->GetSiThickness(); | |
559 | #if 0 | |
560 | Double_t modThick = (siThick | |
561 | + r->GetPrintboardThickness() | |
562 | + r->GetCopperThickness() | |
563 | + r->GetChipThickness() | |
564 | + r->GetSpacing()); | |
565 | #endif | |
566 | AliFMDDebug(30, ("Rho %7.3f, angle %7.3f", rho, phi)); | |
567 | Double_t local[] = { rho * TMath::Cos(phi * TMath::DegToRad()), | |
568 | rho * TMath::Sin(phi * TMath::DegToRad()), | |
569 | /* -modThick + */ siThick / 2 }; | |
570 | Double_t master[3]; | |
571 | AliFMDDebug(30, ("Local (%7.3f,%7.3f,%7.3f)",local[0], local[1], local[2])); | |
572 | m->LocalToMaster(local, master); | |
573 | AliFMDDebug(30, ("Master (%7.3f,%7.3f,%7.3f)", | |
574 | master[0],master[1],master[2])); | |
575 | x = master[0]; | |
576 | y = master[1]; | |
577 | z = master[2]; | |
578 | } | |
579 | ||
580 | //____________________________________________________________________ | |
581 | Bool_t | |
582 | AliFMDDetector::XYZ2Detector(Double_t x, | |
583 | Double_t y, | |
584 | Double_t z, | |
585 | Char_t& ring, | |
586 | UShort_t& sector, | |
587 | UShort_t& strip) const | |
588 | { | |
589 | // Translate (x,y,z) coordinates (in global reference frame) into | |
590 | // detector coordinates (this,ring,sector,strip). | |
591 | AliFMDRing* rng = 0; | |
592 | ring = -1; | |
593 | for (int j = 0; j < 2; j++) { | |
594 | rng = GetRing(j == 0 ? 'I' : 'O'); | |
595 | if (!rng) continue; | |
596 | Double_t ringZ = GetRingZ(j == 0 ? 'I' : 'O'); | |
597 | Double_t modSpace = TMath::Sign(rng->GetModuleSpacing(), ringZ); | |
598 | if (TMath::Abs(z - ringZ) < 0.01 || | |
599 | TMath::Abs(z - ringZ + modSpace) < 0.01) break; | |
600 | rng = 0; | |
601 | } | |
602 | if (rng && rng->XYZ2Detector(x, y, z - GetRingZ(rng->GetId()), | |
603 | sector, strip)) { | |
604 | ring = rng->GetId(); | |
605 | return kTRUE; | |
606 | } | |
607 | return kFALSE; | |
608 | } | |
609 | ||
610 | ||
611 | ||
612 | //____________________________________________________________________ | |
613 | // | |
614 | // EOF | |
615 | // |