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483b0559 | 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 | /* $Id$ */ | |
17 | ||
18 | //_________________________________________________________________________ | |
19 | // Base class for the clusterization algorithm (pure abstract) | |
20 | //*-- | |
21 | //*-- Author: Yves Schutz SUBATECH | |
ee08edde | 22 | // |
23 | // Clusterization mother class. Contains common methods/data members of different | |
24 | // clusterizers. GCB 2010 | |
483b0559 | 25 | ////////////////////////////////////////////////////////////////////////////// |
26 | ||
27 | // --- ROOT system --- | |
c47157cd | 28 | #include "TClonesArray.h" |
29 | #include "TTree.h" | |
ee08edde | 30 | #include <TFile.h> |
31 | class TFolder; | |
32 | #include <TMath.h> | |
33 | #include <TMinuit.h> | |
34 | #include <TTree.h> | |
35 | class TSystem; | |
36 | #include <TBenchmark.h> | |
37 | #include <TBrowser.h> | |
38 | #include <TROOT.h> | |
483b0559 | 39 | |
40 | // --- Standard library --- | |
ee08edde | 41 | #include <cassert> |
483b0559 | 42 | |
43 | // --- AliRoot header files --- | |
483b0559 | 44 | #include "AliEMCALClusterizer.h" |
ee08edde | 45 | #include "AliEMCALReconstructor.h" |
46 | #include "AliRunLoader.h" | |
47 | #include "AliRun.h" | |
c47157cd | 48 | #include "AliLog.h" |
ee08edde | 49 | #include "AliEMCAL.h" |
50 | #include "AliEMCALRecPoint.h" | |
51 | #include "AliEMCALRecParam.h" | |
52 | #include "AliEMCALGeometry.h" | |
53 | #include "AliEMCALRecParam.h" | |
54 | #include "AliCDBManager.h" | |
55 | #include "AliCaloCalibPedestal.h" | |
56 | #include "AliEMCALCalibData.h" | |
57 | class AliCDBStorage; | |
58 | #include "AliCDBEntry.h" | |
483b0559 | 59 | |
60 | ClassImp(AliEMCALClusterizer) | |
61 | ||
b1324a01 | 62 | Bool_t AliEMCALClusterizer::fgkIsInputCalibrated = kFALSE; |
63 | ||
64 | ||
483b0559 | 65 | //____________________________________________________________________________ |
c47157cd | 66 | AliEMCALClusterizer::AliEMCALClusterizer(): |
67 | fDigitsArr(NULL), | |
68 | fTreeR(NULL), | |
ee08edde | 69 | fRecPoints(NULL), |
70 | fGeom(NULL), | |
71 | fCalibData(NULL), | |
72 | fCaloPed(NULL), | |
73 | fADCchannelECA(0.),fADCpedestalECA(0.), | |
74 | fTimeMin(-1.),fTimeMax(1.),fTimeCut(1.), | |
75 | fDefaultInit(kFALSE),fToUnfold(kFALSE), | |
76 | fNumberOfECAClusters(0), fECAClusteringThreshold(0.), | |
65bec413 | 77 | fECALocMaxCut(0.),fECAW0(0.),fMinECut(0.), |
78 | fClusterUnfolding(NULL) | |
483b0559 | 79 | { |
80 | // ctor | |
ee08edde | 81 | |
82 | Init(); | |
83 | ||
84 | } | |
85 | ||
86 | //____________________________________________________________________________ | |
87 | AliEMCALClusterizer::AliEMCALClusterizer(AliEMCALGeometry* geometry): | |
88 | fDigitsArr(NULL), | |
89 | fTreeR(NULL), | |
90 | fRecPoints(NULL), | |
91 | fGeom(geometry), | |
92 | fCalibData(NULL), | |
93 | fCaloPed(NULL), | |
94 | fADCchannelECA(0.),fADCpedestalECA(0.), | |
95 | fTimeMin(-1.),fTimeMax(1.),fTimeCut(1.), | |
96 | fDefaultInit(kFALSE),fToUnfold(kFALSE), | |
97 | fNumberOfECAClusters(0), fECAClusteringThreshold(0.), | |
65bec413 | 98 | fECALocMaxCut(0.),fECAW0(0.),fMinECut(0.), |
99 | fClusterUnfolding(NULL) | |
ee08edde | 100 | { |
101 | // ctor with the indication of the file where header Tree and digits Tree are stored | |
102 | // use this contructor to avoid usage of Init() which uses runloader | |
103 | // change needed by HLT - MP | |
104 | ||
105 | // Note for the future: the use on runloader should be avoided or optional at least | |
106 | // another way is to make Init virtual and protected at least such that the deriving classes can overload | |
107 | // Init() ; | |
108 | // | |
109 | ||
110 | if (!fGeom) | |
111 | { | |
112 | AliFatal("Geometry not initialized."); | |
113 | } | |
65bec413 | 114 | Int_t i=0; |
115 | for (i = 0; i < 8; i++) | |
116 | fSSPars[i] = 0.; | |
117 | for (i = 0; i < 3; i++) { | |
118 | fPar5[i] = 0.; | |
119 | fPar6[i] = 0.; | |
120 | } | |
483b0559 | 121 | } |
839828a6 | 122 | |
ee08edde | 123 | //____________________________________________________________________________ |
124 | AliEMCALClusterizer::AliEMCALClusterizer(AliEMCALGeometry* geometry, AliEMCALCalibData * calib, AliCaloCalibPedestal * caloped): | |
125 | fDigitsArr(NULL), | |
126 | fTreeR(NULL), | |
127 | fRecPoints(NULL), | |
128 | fGeom(geometry), | |
129 | fCalibData(calib), | |
130 | fCaloPed(caloped), | |
131 | fADCchannelECA(0.),fADCpedestalECA(0.), | |
132 | fTimeMin(-1.),fTimeMax(1.),fTimeCut(1.), | |
133 | fDefaultInit(kFALSE),fToUnfold(kFALSE), | |
134 | fNumberOfECAClusters(0), fECAClusteringThreshold(0.), | |
65bec413 | 135 | fECALocMaxCut(0.),fECAW0(0.),fMinECut(0.), |
136 | fClusterUnfolding(NULL) | |
ee08edde | 137 | { |
c526514b | 138 | // ctor, geometry and calibration are initialized elsewhere. |
139 | ||
140 | if (!fGeom) | |
141 | AliFatal("Geometry not initialized."); | |
ee08edde | 142 | |
65bec413 | 143 | Int_t i=0; |
144 | for (i = 0; i < 8; i++) | |
145 | fSSPars[i] = 0.; | |
146 | for (i = 0; i < 3; i++) { | |
147 | fPar5[i] = 0.; | |
148 | fPar6[i] = 0.; | |
149 | } | |
150 | ||
ee08edde | 151 | } |
152 | ||
153 | ||
483b0559 | 154 | //____________________________________________________________________________ |
c47157cd | 155 | AliEMCALClusterizer::~AliEMCALClusterizer() |
483b0559 | 156 | { |
c47157cd | 157 | // dtor |
23ca956b | 158 | //Already deleted in AliEMCALReconstructor. |
159 | ||
160 | // if(fGeom) delete fGeom; | |
161 | // if(fCalibData) delete fCalibData; | |
162 | // if(fCaloPed) delete fCaloPed; | |
163 | ||
164 | // if (fDigitsArr) { | |
165 | // fDigitsArr->Clear("C"); | |
166 | // delete fDigitsArr; | |
167 | // } | |
168 | // if (fRecPoints) { | |
169 | // fRecPoints->Delete(); | |
170 | // delete fRecPoints; | |
171 | // } | |
65bec413 | 172 | |
173 | if(fClusterUnfolding) delete fClusterUnfolding; | |
18a21c7c | 174 | } |
175 | ||
ee08edde | 176 | //____________________________________________________________________________ |
177 | Float_t AliEMCALClusterizer::Calibrate(const Float_t amp, const Float_t time, const Int_t absId) | |
178 | { | |
179 | ||
180 | // Convert digitized amplitude into energy. | |
181 | // Calibration parameters are taken from calibration data base for raw data, | |
182 | // or from digitizer parameters for simulated data. | |
183 | if(fCalibData){ | |
184 | ||
185 | if (fGeom==0) | |
186 | AliFatal("Did not get geometry from EMCALLoader") ; | |
187 | ||
188 | Int_t iSupMod = -1; | |
189 | Int_t nModule = -1; | |
190 | Int_t nIphi = -1; | |
191 | Int_t nIeta = -1; | |
192 | Int_t iphi = -1; | |
193 | Int_t ieta = -1; | |
194 | ||
195 | Bool_t bCell = fGeom->GetCellIndex(absId, iSupMod, nModule, nIphi, nIeta) ; | |
196 | if(!bCell) { | |
197 | fGeom->PrintGeometry(); | |
198 | Error("Calibrate()"," Wrong cell id number : %i", absId); | |
199 | assert(0); | |
200 | } | |
201 | ||
202 | fGeom->GetCellPhiEtaIndexInSModule(iSupMod,nModule,nIphi, nIeta,iphi,ieta); | |
203 | ||
204 | // Check if channel is bad (dead or hot), in this case return 0. | |
205 | // Gustavo: 15-12-09 In case of RAW data this selection is already done, but not in simulation. | |
206 | // for the moment keep it here but remember to do the selection at the sdigitizer level | |
207 | // and remove it from here | |
208 | Int_t channelStatus = (Int_t)(fCaloPed->GetDeadMap(iSupMod))->GetBinContent(ieta,iphi); | |
209 | if(channelStatus == AliCaloCalibPedestal::kHot || channelStatus == AliCaloCalibPedestal::kDead) { | |
210 | AliDebug(2,Form("Tower from SM %d, ieta %d, iphi %d is BAD : status %d !!!",iSupMod,ieta,iphi, channelStatus)); | |
211 | return 0; | |
212 | } | |
213 | //Check if time is too large or too small, indication of a noisy channel, remove in this case | |
214 | if(time > fTimeMax || time < fTimeMin) return 0; | |
b1324a01 | 215 | |
216 | if (AliEMCALClusterizer::fgkIsInputCalibrated == kTRUE) | |
217 | { | |
218 | AliDebug(10, Form("Input already calibrated!")); | |
219 | return amp; | |
220 | } | |
ee08edde | 221 | |
222 | fADCchannelECA = fCalibData->GetADCchannel (iSupMod,ieta,iphi); | |
223 | fADCpedestalECA = fCalibData->GetADCpedestal(iSupMod,ieta,iphi); | |
224 | ||
b1324a01 | 225 | |
ee08edde | 226 | return -fADCpedestalECA + amp * fADCchannelECA ; |
227 | ||
228 | } | |
b1324a01 | 229 | else{ //Return energy with default parameters if calibration is not available |
230 | ||
231 | if (AliEMCALClusterizer::fgkIsInputCalibrated == kTRUE) | |
232 | { | |
233 | AliDebug(10, Form("Input already calibrated!")); | |
234 | return amp; | |
235 | } | |
236 | ||
ee08edde | 237 | return -fADCpedestalECA + amp * fADCchannelECA ; |
b1324a01 | 238 | } |
ee08edde | 239 | |
240 | } | |
241 | ||
242 | //____________________________________________________________________________ | |
243 | void AliEMCALClusterizer::GetCalibrationParameters() | |
244 | { | |
245 | // Set calibration parameters: | |
246 | // if calibration database exists, they are read from database, | |
247 | // otherwise, they are taken from digitizer. | |
248 | // | |
249 | // It is a user responsilibity to open CDB before reconstruction, | |
250 | // for example: | |
251 | // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB"); | |
252 | ||
253 | //Check if calibration is stored in data base | |
254 | ||
255 | if(!fCalibData) | |
256 | { | |
257 | AliCDBEntry *entry = (AliCDBEntry*) | |
258 | AliCDBManager::Instance()->Get("EMCAL/Calib/Data"); | |
259 | if (entry) fCalibData = (AliEMCALCalibData*) entry->GetObject(); | |
260 | } | |
261 | ||
262 | if(!fCalibData) | |
263 | AliFatal("Calibration parameters not found in CDB!"); | |
264 | ||
265 | } | |
266 | ||
267 | //____________________________________________________________________________ | |
268 | void AliEMCALClusterizer::GetCaloCalibPedestal() | |
269 | { | |
c526514b | 270 | // Set calibration parameters: |
271 | // if calibration database exists, they are read from database, | |
272 | // otherwise, they are taken from digitizer. | |
273 | // | |
274 | // It is a user responsilibity to open CDB before reconstruction, | |
275 | // for example: | |
276 | // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB"); | |
277 | ||
278 | //Check if calibration is stored in data base | |
279 | ||
280 | if(!fCaloPed) | |
281 | { | |
282 | AliCDBEntry *entry = (AliCDBEntry*) | |
283 | AliCDBManager::Instance()->Get("EMCAL/Calib/Pedestals"); | |
284 | if (entry) fCaloPed = (AliCaloCalibPedestal*) entry->GetObject(); | |
285 | } | |
286 | ||
287 | if(!fCaloPed) | |
288 | AliFatal("Pedestal info not found in CDB!"); | |
289 | ||
ee08edde | 290 | } |
291 | ||
292 | //____________________________________________________________________________ | |
293 | void AliEMCALClusterizer::Init() | |
294 | { | |
295 | // Make all memory allocations which can not be done in default constructor. | |
296 | // Attach the Clusterizer task to the list of EMCAL tasks | |
297 | ||
298 | AliRunLoader *rl = AliRunLoader::Instance(); | |
a51e676d | 299 | if (rl->GetAliRun()){ |
300 | AliEMCAL* emcal = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL")); | |
301 | if(emcal)fGeom = emcal->GetGeometry(); | |
302 | } | |
303 | ||
304 | if(!fGeom){ | |
ee08edde | 305 | fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName()); |
a51e676d | 306 | } |
ee08edde | 307 | |
308 | AliDebug(1,Form("geom %p",fGeom)); | |
309 | ||
310 | if(!gMinuit) | |
311 | gMinuit = new TMinuit(100) ; | |
312 | ||
65bec413 | 313 | Int_t i=0; |
314 | for (i = 0; i < 8; i++) | |
315 | fSSPars[i] = 0.; | |
316 | for (i = 0; i < 3; i++) { | |
317 | fPar5[i] = 0.; | |
318 | fPar6[i] = 0.; | |
319 | } | |
320 | ||
ee08edde | 321 | } |
322 | ||
323 | //____________________________________________________________________________ | |
324 | void AliEMCALClusterizer::InitParameters() | |
325 | { | |
326 | // Initializes the parameters for the Clusterizer | |
327 | fNumberOfECAClusters = 0 ; | |
328 | fCalibData = 0 ; | |
329 | fCaloPed = 0 ; | |
330 | ||
331 | const AliEMCALRecParam* recParam = AliEMCALReconstructor::GetRecParam(); | |
332 | if(!recParam) { | |
333 | AliFatal("Reconstruction parameters for EMCAL not set!"); | |
334 | } else { | |
335 | fECAClusteringThreshold = recParam->GetClusteringThreshold(); | |
336 | fECAW0 = recParam->GetW0(); | |
337 | fMinECut = recParam->GetMinECut(); | |
338 | fToUnfold = recParam->GetUnfold(); | |
ee08edde | 339 | fECALocMaxCut = recParam->GetLocMaxCut(); |
340 | fTimeCut = recParam->GetTimeCut(); | |
341 | fTimeMin = recParam->GetTimeMin(); | |
342 | fTimeMax = recParam->GetTimeMax(); | |
343 | ||
344 | AliDebug(1,Form("Reconstruction parameters: fECAClusteringThreshold=%.3f GeV, fECAW=%.3f, fMinECut=%.3f GeV, fToUnfold=%d, fECALocMaxCut=%.3f GeV, fTimeCut=%e s,fTimeMin=%e s,fTimeMax=%e s", | |
345 | fECAClusteringThreshold,fECAW0,fMinECut,fToUnfold,fECALocMaxCut,fTimeCut, fTimeMin, fTimeMax)); | |
65bec413 | 346 | |
622e10be | 347 | if(fToUnfold){ |
348 | ||
349 | Int_t i=0; | |
350 | for (i = 0; i < 8; i++) { | |
351 | fSSPars[i] = recParam->GetSSPars(i); | |
352 | }//end of loop over parameters | |
353 | for (i = 0; i < 3; i++) { | |
354 | fPar5[i] = recParam->GetPar5(i); | |
355 | fPar6[i] = recParam->GetPar6(i); | |
356 | }//end of loop over parameters | |
357 | ||
0d0d6b98 | 358 | InitClusterUnfolding(); |
622e10be | 359 | |
360 | for (i = 0; i < 8; i++) { | |
361 | AliDebug(1,Form("unfolding shower shape parameters: fSSPars=%f \n",fSSPars[i])); | |
362 | } | |
363 | for (i = 0; i < 3; i++) { | |
364 | AliDebug(1,Form("unfolding parameter 5: fPar5=%f \n",fPar5[i])); | |
365 | AliDebug(1,Form("unfolding parameter 6: fPar6=%f \n",fPar6[i])); | |
366 | } | |
367 | ||
368 | }// to unfold | |
369 | }// recparam not null | |
370 | ||
ee08edde | 371 | } |
372 | ||
373 | ||
374 | //____________________________________________________________________________ | |
375 | void AliEMCALClusterizer::Print(Option_t * /*option*/)const | |
376 | { | |
377 | // Print clusterizer parameters | |
378 | ||
379 | TString message("\n") ; | |
380 | ||
381 | if( strcmp(GetName(), "") !=0 ){ | |
382 | ||
383 | // Print parameters | |
384 | ||
385 | TString taskName(Version()) ; | |
386 | ||
387 | printf("--------------- "); | |
388 | printf("%s",taskName.Data()) ; | |
389 | printf(" "); | |
390 | printf("Clusterizing digits: "); | |
391 | printf("\n ECA Local Maximum cut = %f", fECALocMaxCut); | |
392 | printf("\n ECA Logarithmic weight = %f", fECAW0); | |
c526514b | 393 | if(fToUnfold){ |
ee08edde | 394 | printf("\nUnfolding on\n"); |
c526514b | 395 | printf("Unfolding parameters: fSSpars: \n"); |
396 | Int_t i=0; | |
397 | for (i = 0; i < 8; i++) { | |
398 | printf("fSSPars[%d] = %f \n", i, fSSPars[i]); | |
399 | } | |
400 | printf("Unfolding parameter 5 and 6: fPar5 and fPar6: \n"); | |
401 | for (i = 0; i < 3; i++) { | |
402 | printf("fPar5[%d] = %f \n", i, fPar5[i]); | |
403 | printf("fPar6[%d] = %f \n", i, fPar6[i]); | |
404 | } | |
405 | } | |
ee08edde | 406 | else |
407 | printf("\nUnfolding off\n"); | |
408 | ||
409 | printf("------------------------------------------------------------------"); | |
410 | } | |
411 | else | |
412 | printf("AliEMCALClusterizer not initialized ") ; | |
413 | } | |
414 | ||
415 | //____________________________________________________________________________ | |
416 | void AliEMCALClusterizer::PrintRecPoints(Option_t * option) | |
417 | { | |
418 | // Prints list of RecPoints produced at the current pass of AliEMCALClusterizer | |
419 | if(strstr(option,"deb")) { | |
420 | printf("PrintRecPoints: Clusterization result:") ; | |
421 | ||
422 | printf(" Found %d ECA Rec Points\n ", | |
423 | fRecPoints->GetEntriesFast()) ; | |
424 | } | |
425 | ||
426 | if(strstr(option,"all")) { | |
427 | if(strstr(option,"deb")) { | |
428 | printf("\n-----------------------------------------------------------------------\n") ; | |
429 | printf("Clusters in ECAL section\n") ; | |
430 | printf("Index Ene(GeV) Multi Module GX GY GZ lX lY lZ Dispersion Lambda 1 Lambda 2 # of prim Primaries list\n") ; | |
431 | } | |
432 | Int_t index; | |
433 | for (index = 0 ; index < fRecPoints->GetEntries() ; index++) { | |
434 | AliEMCALRecPoint * rp = dynamic_cast<AliEMCALRecPoint * >(fRecPoints->At(index)) ; | |
51e4198e | 435 | if(rp){ |
436 | TVector3 globalpos; | |
437 | //rp->GetGlobalPosition(globalpos); | |
438 | TVector3 localpos; | |
439 | rp->GetLocalPosition(localpos); | |
440 | Float_t lambda[2]; | |
441 | rp->GetElipsAxis(lambda); | |
442 | ||
443 | Int_t nprimaries=0; | |
444 | Int_t * primaries = rp->GetPrimaries(nprimaries); | |
445 | ||
446 | if(strstr(option,"deb")) | |
447 | printf("\n%6d %8.4f %3d %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4.1f %4f %4f %2d : ", | |
448 | rp->GetIndexInList(), rp->GetEnergy(), rp->GetMultiplicity(), | |
449 | globalpos.X(), globalpos.Y(), globalpos.Z(), localpos.X(), localpos.Y(), localpos.Z(), | |
450 | rp->GetDispersion(), lambda[0], lambda[1], nprimaries) ; | |
451 | if(strstr(option,"deb")){ | |
452 | for (Int_t iprimary=0; iprimary<nprimaries; iprimary++) { | |
453 | printf("%d ", primaries[iprimary] ) ; | |
454 | } | |
ee08edde | 455 | } |
456 | } | |
457 | } | |
458 | ||
459 | if(strstr(option,"deb")) | |
460 | printf("\n-----------------------------------------------------------------------\n"); | |
461 | } | |
462 | } | |
463 | ||
464 | //___________________________________________________________________ | |
465 | void AliEMCALClusterizer::PrintRecoInfo() | |
466 | { | |
467 | //print reco version | |
468 | printf(" AliEMCALClusterizer::PrintRecoInfo() : version %s \n", Version() ); | |
469 | ||
470 | } | |
471 | ||
18a21c7c | 472 | //____________________________________________________________________________ |
c47157cd | 473 | void AliEMCALClusterizer::SetInput(TTree *digitsTree) |
18a21c7c | 474 | { |
c47157cd | 475 | // Read the digits from the input tree |
476 | TBranch *branch = digitsTree->GetBranch("EMCAL"); | |
477 | if (!branch) { | |
478 | AliError("can't get the branch with the EMCAL digits !"); | |
479 | return; | |
480 | } | |
3f9ad99f | 481 | if (!fDigitsArr) |
482 | fDigitsArr = new TClonesArray("AliEMCALDigit",100); | |
c47157cd | 483 | branch->SetAddress(&fDigitsArr); |
484 | branch->GetEntry(0); | |
483b0559 | 485 | } |
486 | ||
487 | //____________________________________________________________________________ | |
c47157cd | 488 | void AliEMCALClusterizer::SetOutput(TTree *clustersTree) |
483b0559 | 489 | { |
c47157cd | 490 | // Read the digits from the input tree |
491 | fTreeR = clustersTree; | |
492 | ||
493 | AliDebug(9, "Making array for EMCAL clusters"); | |
494 | fRecPoints = new TObjArray(100) ; | |
495 | Int_t split = 0; | |
496 | Int_t bufsize = 32000; | |
497 | fTreeR->Branch("EMCALECARP", "TObjArray", &fRecPoints, bufsize, split); | |
88cb7938 | 498 | } |
ee08edde | 499 | |
b1324a01 | 500 | //___________________________________________________________________ |
501 | void AliEMCALClusterizer::SetInputCalibrated(Bool_t val) | |
502 | { | |
503 | // | |
504 | // input is calibrated - the case when we run already on ESD | |
505 | // | |
506 | AliEMCALClusterizer::fgkIsInputCalibrated = val; | |
507 | } | |
508 | ||
ee08edde | 509 | |
510 |