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1f30d65c | 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 | // Static function member | |
17 | // as utils for | |
18 | // AliTPCCombinedTrackfit | |
19 | // | |
20 | // grep "exitreport" in output log to check abnormal termination | |
21 | // comment tbc | |
22 | // | |
23 | // Xianguo Lu <lu@physi.uni-heidelberg.de> | |
24 | // | |
25 | ||
26 | #include <TAxis.h> | |
27 | #include <TCanvas.h> | |
28 | #include <TGraph.h> | |
29 | #include <TTreeStream.h> | |
30 | #include <TVector3.h> | |
31 | ||
32 | #include "AliESDtrack.h" | |
33 | #include "AliESDfriendTrack.h" | |
34 | #include "AliTPCseed.h" | |
35 | #include "AliTrackerBase.h" | |
36 | #include "AliTrackPointArray.h" | |
37 | ||
38 | #include "AliTPCCosmicUtils.h" | |
39 | ||
40 | Int_t AliTPCCosmicUtils::RotateSafe(AliExternalTrackParam *trackPar, const Double_t aa) | |
41 | { | |
42 | //1. in AliExternalTrackParam::GetXYZ | |
43 | //r[0]=fX; r[1]=fP[0]; r[2]=fP[1]; | |
44 | //return Local2GlobalPosition(r,fAlpha); | |
45 | //in AliVParticle::Local2GlobalMomentum | |
46 | //Double_t cs=TMath::Cos(alpha), sn=TMath::Sin(alpha); | |
47 | //Double_t r=TMath::Sqrt((1. - p[1])*(1. + p[1])); | |
48 | //p[0]=pt*(r*cs - p[1]*sn); p[1]=pt*(p[1]*cs + r*sn); p[2]=pt*p[2]; | |
49 | //which is cos(phi_local=Snp+fAlpha) > 0 always. | |
50 | //2. also in Bool_t AliExternalTrackParam::Rotate(Double_t alpha) | |
51 | // Double_t sf=fP2, cf=TMath::Sqrt((1.- fP2)*(1.+fP2)); | |
52 | //in AliExternalTrackParam::Set | |
53 | //mom.RotateZ(-fAlpha); | |
54 | //fP[2] = TMath::Sin(mom.Phi()); | |
55 | //since only sin is used for mom.Phi(), that is assuming cos(mom.Phi())>0 | |
56 | ||
57 | Double_t xyz[3], pxpypz[3]; | |
58 | trackPar->GetXYZ(xyz); | |
59 | trackPar->GetPxPyPz(pxpypz); | |
60 | const TVector3 pos0(xyz); | |
61 | const TVector3 mom0(pxpypz); | |
62 | TVector3 pos1, mom1, dpos, dmom; | |
63 | const Double_t eps = 1e-6; | |
64 | AliExternalTrackParam tmppar = (*trackPar); | |
65 | ||
66 | if(!tmppar.Rotate(aa)){ | |
67 | return 0; | |
68 | } | |
69 | ||
70 | tmppar.GetXYZ(xyz); | |
71 | tmppar.GetPxPyPz(pxpypz); | |
72 | pos1.SetXYZ(xyz[0], xyz[1], xyz[2]); | |
73 | mom1.SetXYZ(pxpypz[0], pxpypz[1], pxpypz[2]); | |
74 | dpos = pos1-pos0; | |
75 | dmom = mom1-mom0; | |
76 | if(dpos.Mag()<eps && dmom.Mag()<eps){ | |
77 | (*trackPar)=tmppar; | |
78 | return 1; | |
79 | } | |
80 | else | |
81 | return 0; | |
82 | ||
83 | /* | |
84 | //flip | |
85 | tmppar = (*trackPar); | |
86 | if(!tmppar.Rotate(aa+TMath::Pi())){ | |
87 | return 0; | |
88 | } | |
89 | ||
90 | tmppar.GetXYZ(xyz); | |
91 | tmppar.GetPxPyPz(pxpypz); | |
92 | pos1.SetXYZ(xyz[0], xyz[1], xyz[2]); | |
93 | mom1.SetXYZ(pxpypz[0], pxpypz[1], pxpypz[2]); | |
94 | dpos = pos1-pos0; | |
95 | dmom = mom1-mom0; | |
96 | if(dpos.Mag()<eps && dmom.Mag()<eps){ | |
97 | (*trackPar)=tmppar; | |
98 | return -1; | |
99 | } | |
100 | ||
101 | return 0; | |
102 | */ | |
103 | } | |
104 | ||
105 | void AliTPCCosmicUtils::PrintTrackParam(const Int_t id, const AliExternalTrackParam * trackpar, const char *tag) | |
106 | { | |
107 | // | |
108 | //print out TrackParam | |
109 | // | |
110 | Double_t xyz[3]={-999,-999,-999}; | |
111 | trackpar->GetXYZ(xyz); | |
112 | Double_t pxpypz[3]={-999,-999,-999}; | |
113 | trackpar->GetPxPyPz(pxpypz); | |
114 | ||
115 | printf("PrintTrackPar %2s %3d : %6.1f %5.1f : %6.6f %6.6f %6.6f : %8.3f %8.3f %8.3f : (%2d) %8.3f %11.6f %.2f\n", tag, id, trackpar->GetX(), sqrt(pow(xyz[0],2)+pow(xyz[1],2)), xyz[0], xyz[1], xyz[2], pxpypz[0], pxpypz[1], pxpypz[2], trackpar->Charge(), trackpar->Pt(), trackpar->P(), trackpar->GetAlpha()*TMath::RadToDeg()); | |
116 | } | |
117 | ||
118 | void AliTPCCosmicUtils::DrawSeeds(const AliTPCseed * seeds[], const TString tag, const TString outputformat) | |
119 | { | |
120 | // | |
121 | //draw seed and output to file | |
122 | // | |
123 | TGraph *grsyx[]={new TGraph, new TGraph}; | |
124 | TGraph *grsyz[]={new TGraph, new TGraph}; | |
125 | ||
126 | for(Int_t itrk=0; itrk<2; itrk++){ | |
127 | if(!seeds[itrk]) | |
128 | continue; | |
129 | ||
130 | Int_t ncl = 0; | |
131 | for(Int_t irow=0; irow<fgkNRow; irow++){ | |
132 | const AliTPCclusterMI * cls = seeds[itrk]->GetClusterPointer(irow); | |
133 | if(!cls) | |
134 | continue; | |
135 | ||
136 | Float_t xyz[3]={-999,-999,-999}; | |
137 | cls->GetGlobalXYZ(xyz); | |
138 | //printf("Test %f %f %f \n", xyz[0], xyz[1], xyz[2]); | |
139 | grsyx[itrk]->SetPoint(ncl, xyz[0], xyz[1]); | |
140 | grsyz[itrk]->SetPoint(ncl, xyz[2], xyz[1]); | |
141 | ncl++; | |
142 | } | |
143 | } | |
144 | ||
145 | grsyx[0]->SetTitle(tag); | |
146 | grsyx[0]->SetMaximum(250); | |
147 | grsyx[0]->SetMinimum(-250); | |
148 | grsyx[0]->GetXaxis()->SetLimits(-250,250); | |
149 | grsyx[0]->GetXaxis()->SetTitle("X (cm)"); | |
150 | grsyx[0]->GetYaxis()->SetTitle("Y (cm)"); | |
151 | ||
152 | grsyx[0]->SetMarkerStyle(20); | |
153 | grsyx[0]->SetMarkerColor(kRed); | |
154 | grsyx[1]->SetMarkerStyle(22); | |
155 | grsyx[1]->SetMarkerColor(kBlue); | |
156 | ||
157 | grsyz[0]->SetTitle(tag); | |
158 | grsyz[0]->SetMaximum(250); | |
159 | grsyz[0]->SetMinimum(-250); | |
160 | grsyz[0]->GetXaxis()->SetLimits(-250,250); | |
161 | grsyz[0]->GetXaxis()->SetTitle("Z (cm)"); | |
162 | grsyz[0]->GetYaxis()->SetTitle("Y (cm)"); | |
163 | ||
164 | grsyz[0]->SetMarkerStyle(20); | |
165 | grsyz[0]->SetMarkerColor(kRed); | |
166 | grsyz[1]->SetMarkerStyle(22); | |
167 | grsyz[1]->SetMarkerColor(kBlue); | |
168 | ||
169 | TCanvas *cc=new TCanvas("cc","",1200,600); | |
170 | cc->Divide(2); | |
171 | cc->cd(1); | |
172 | for(int itrk=0; itrk<2; itrk++){ | |
173 | grsyx[itrk]->SetMarkerSize(1); | |
174 | grsyx[itrk]->Draw(itrk?"lp same":"alp"); | |
175 | } | |
176 | cc->cd(2); | |
177 | for(int itrk=0; itrk<2; itrk++){ | |
178 | grsyz[itrk]->SetMarkerSize(1); | |
179 | grsyz[itrk]->Draw(itrk?"lp same":"alp"); | |
180 | } | |
181 | cc->Print(Form("drawTrack%s.%s", tag.Data(), outputformat.Data())); | |
182 | ||
183 | for(Int_t ii=0; ii<2; ii++){ | |
184 | delete grsyx[ii]; | |
185 | delete grsyz[ii]; | |
186 | } | |
187 | delete cc; | |
188 | } | |
189 | ||
190 | //================================================================================================ | |
191 | AliTPCseed * AliTPCCosmicUtils::GetTPCseed(const AliESDtrack *esdtrack) | |
192 | { | |
193 | // | |
194 | //Get TPC seeds from ESDfriendTrack | |
195 | // | |
196 | ||
197 | AliESDfriendTrack * friendtrk = (AliESDfriendTrack *) esdtrack->GetFriendTrack(); | |
198 | if(!friendtrk){ | |
199 | printf("exitreport AliTPCCosmicUtils::GetTPCseed no friend track!\n"); | |
200 | exit(1); | |
201 | } | |
202 | ||
203 | TObject *calibObject=0x0; | |
204 | AliTPCseed *tseed = 0x0; | |
205 | for(Int_t l=0; (calibObject=friendtrk->GetCalibObject(l)); l++) { | |
206 | if( (tseed=dynamic_cast<AliTPCseed*>(calibObject)) ) | |
207 | break; | |
208 | } | |
209 | return tseed; | |
210 | } | |
211 | ||
212 | //================================================================================================ | |
213 | AliExternalTrackParam *AliTPCCosmicUtils::MakeSeed(const AliTPCseed *tseed) | |
214 | { | |
215 | // | |
216 | //make seed for propagation of TrackParam, using np = 3 outer clusters (separated by deltancls clusters) in TPCseed | |
217 | // | |
218 | ||
219 | const Int_t rowstart = fgkNRow-1; | |
220 | const Int_t rowstop = 0; | |
221 | const Int_t drow = -1; | |
222 | ||
223 | //--- | |
224 | const Int_t np = 3; | |
225 | AliTrackPoint *tpos[np]; | |
226 | for(Int_t ii=0; ii<np; ii++) | |
227 | tpos[ii] = 0x0; | |
228 | ||
229 | const Float_t cov[6]={0,0,0, 0.01*0.01 ,0, 0.01*0.01}; | |
230 | ||
231 | //--- | |
232 | Int_t npos = 0; | |
233 | Int_t icl = 0; | |
234 | const Int_t deltancls = fgkNclsMin/2-1; | |
235 | Int_t oldcl = -deltancls; | |
236 | ||
237 | for(Int_t irow=rowstart; drow*irow<=drow*rowstop; irow+=drow){ | |
238 | AliTPCclusterMI *cls = tseed->GetClusterPointer(irow); | |
239 | if(!cls) { | |
240 | continue; | |
241 | } | |
242 | ||
243 | if( icl == (oldcl+deltancls) ){ | |
244 | Float_t txyz[3]; | |
245 | cls->GetGlobalXYZ(txyz); | |
246 | tpos[npos++] = new AliTrackPoint(txyz, cov, 0); | |
247 | //printf("------ %d %f %f %f\n", npos, txyz[0], txyz[1], txyz[2]); | |
248 | ||
249 | oldcl = icl; | |
250 | if(npos==np) break; | |
251 | } | |
252 | icl++; | |
253 | } | |
254 | if(npos!=np){ | |
255 | for(Int_t ii=0; ii<npos; ii++) | |
256 | delete tpos[ii]; | |
257 | ||
258 | return 0x0; | |
259 | } | |
260 | ||
261 | AliExternalTrackParam * trackparam = AliTrackerBase::MakeSeed(*(tpos[0]), *(tpos[1]), *(tpos[2])); | |
262 | if(!trackparam || trackparam->Pt()==0){ | |
263 | for(Int_t ii=0; ii<npos; ii++) | |
264 | delete tpos[ii]; | |
265 | delete trackparam; | |
266 | ||
267 | return 0x0; | |
268 | } | |
269 | ||
270 | //------ | |
271 | ||
272 | Double_t sxyz[3]={-999,-999,-999}, spxpypz[3]={-999,-999,-999}; | |
273 | trackparam->GetXYZ(sxyz); | |
274 | trackparam->GetPxPyPz(spxpypz); | |
275 | Double_t scov[21]; | |
276 | Int_t sign = trackparam->Charge(); | |
277 | ||
278 | //reset covariance matrix -- necessary, otherwise bad fitting result: trackparam->GetCovariance()[ii] has problem: some are strange values | |
279 | for(Int_t ii=0; ii<21; ii++) { | |
280 | scov[ii]=0; | |
281 | } | |
282 | trackparam->Set(sxyz, spxpypz, scov, sign); | |
283 | ||
284 | for(Int_t ii=0; ii<np; ii++) | |
285 | delete tpos[ii]; | |
286 | ||
287 | return trackparam; | |
288 | } | |
289 | ||
290 | //================================================================================================ | |
291 | void AliTPCCosmicUtils::IniCov(AliExternalTrackParam *trackPar, const Double_t ncl) | |
292 | { | |
293 | // | |
294 | //initialize covariance matrix | |
295 | // | |
296 | ||
297 | const Double_t ksigma=5.; | |
298 | Double_t acov[16]; | |
299 | for (Int_t i=0;i<15;i++) | |
300 | acov[i]=0; | |
301 | ||
302 | acov[0]=ksigma*ksigma; | |
303 | acov[2]=ksigma*ksigma; | |
304 | acov[5]=ksigma*ksigma; | |
305 | acov[9]=ksigma*ksigma; | |
306 | acov[14]=0.2*0.2; | |
307 | ||
308 | acov[5] = ksigma*ksigma/(ncl*ncl); | |
309 | acov[9] = ksigma*ksigma/(ncl*ncl); | |
310 | ||
311 | const Double_t resetcov = 4; | |
312 | ||
313 | trackPar->ResetCovariance(resetcov); | |
314 | //the following helps a lot!! | |
315 | trackPar->AddCovariance(acov); | |
316 | } | |
317 | ||
318 | void AliTPCCosmicUtils::SingleFit(AliExternalTrackParam * trackInOld, AliExternalTrackParam * trackOutOld, const AliTPCseed *tseed, const Bool_t kinward, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer) | |
319 | { | |
320 | // | |
321 | //fit single track | |
322 | // | |
323 | //kinward is the true geometry of the track. Incomming track: 1; outgoing track: 0 | |
324 | const Double_t inde = kinward? -1 : 1; | |
325 | const Double_t outde = kinward? 1 : -1; | |
326 | ||
327 | //PrintTrackParam(9000, trackOutOld); | |
328 | ||
329 | AliExternalTrackParam trackOut = *trackOutOld; | |
330 | AliExternalTrackParam trackIn; | |
331 | Int_t ksite = -999; | |
332 | ||
333 | //nmiss is from the 2 FitKernel of the last iteration | |
334 | //nfit, pchi2 is from the last FitKernel of the last iteration | |
335 | for(Int_t ii=0; ii<fgkNiter; ii++){ | |
336 | nmiss = 0; | |
337 | ||
338 | ksite = -999; | |
339 | trackIn = trackOut; | |
340 | FitKernel(&trackIn, tseed, fgkNRow-1, 0, inde , ksite, nfit, nmiss, pchi2, 0x0, kTRUE); | |
341 | //PrintTrackParam(9010+ii, &trackIn); | |
342 | ||
343 | nfit = 0; | |
344 | pchi2 = 0; | |
345 | ||
346 | ksite = -999; | |
347 | trackOut = trackIn; | |
348 | FitKernel(&trackOut, tseed, 0, fgkNRow-1, outde, ksite, nfit, nmiss, pchi2, (ii==fgkNiter-1 ? debugstreamer : 0x0), kTRUE); | |
349 | //PrintTrackParam(90020+ii, &trackOut); | |
350 | } | |
351 | ||
352 | if(trackInOld) | |
353 | (*trackInOld) = trackIn; | |
354 | ||
355 | (*trackOutOld) = trackOut; | |
356 | } | |
357 | ||
358 | void AliTPCCosmicUtils::CombinedFit(AliExternalTrackParam *trackPars[], const AliTPCseed *seeds[], Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer) | |
359 | { | |
360 | // | |
361 | //combined propagation | |
362 | // | |
363 | ||
364 | //seen from 1/pt_fit - 1/pt_gen, for differnt de: | |
365 | //u+d+: combUp good, combLow bad | |
366 | //u+d-: combUp good, combLow good | |
367 | //u-d-: combUp bad, combLow good | |
368 | //u-d+: combUp bad, combLow bad | |
369 | const Double_t upde = 1; | |
370 | const Double_t lowde = -1; | |
371 | ||
372 | AliExternalTrackParam trackLow = *(trackPars[1]); | |
373 | AliExternalTrackParam trackUp; | |
374 | ||
375 | for(Int_t ii=0; ii<fgkNiter; ii++){ | |
376 | nmiss = 0; | |
377 | ||
378 | //lower->upper | |
379 | trackUp = trackLow; | |
380 | SubCombined(&trackUp, seeds, 1, 0, upde, nfit, nmiss, pchi2); | |
381 | ||
382 | nfit = 0; | |
383 | pchi2 = 0; | |
384 | ||
385 | //upper->lower | |
386 | trackLow = trackUp; | |
387 | SubCombined(&trackLow, seeds, 0, 1, lowde, nfit, nmiss, pchi2, (ii==fgkNiter-1? debugstreamer : 0x0)); | |
388 | } | |
389 | ||
390 | *(trackPars[0]) = trackUp; | |
391 | *(trackPars[1]) = trackLow; | |
392 | } | |
393 | ||
394 | void AliTPCCosmicUtils::SubCombined(AliExternalTrackParam *trackPar, const AliTPCseed *seeds[], const Int_t tk0, const Int_t tk1, const Double_t eloss, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer) | |
395 | { | |
396 | // | |
397 | //sub-routine for combined propagation | |
398 | // | |
399 | ||
400 | IniCov(trackPar, seeds[0]->GetNumberOfClusters()+seeds[1]->GetNumberOfClusters()); | |
401 | ||
402 | Int_t dtk=1; | |
403 | if(tk0>tk1) | |
404 | dtk=-1; | |
405 | ||
406 | //reset counters | |
407 | Int_t ksite = -999; | |
408 | nfit = 0; | |
409 | nmiss = 0; | |
410 | pchi2 = 0; | |
411 | ||
412 | //always nrow -> 1 -> nrow | |
413 | Int_t rowstart=fgkNRow-1; | |
414 | Int_t rowstop=0; | |
415 | for(Int_t itrk=tk0; dtk*itrk<=dtk*tk1; itrk+=dtk){ | |
416 | if(itrk==tk1){ | |
417 | Int_t tmprow = rowstart; | |
418 | rowstart = rowstop; | |
419 | rowstop = tmprow; | |
420 | } | |
421 | FitKernel(trackPar, seeds[itrk], rowstart, rowstop, eloss, ksite, nfit, nmiss, pchi2, debugstreamer, kFALSE); | |
422 | } | |
423 | } | |
424 | ||
425 | void AliTPCCosmicUtils::FitKernel(AliExternalTrackParam *trackPar, const AliTPCseed *tseed, const Int_t rowstart, const Int_t rowstop, const Double_t eloss, Int_t &ksite, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer, const Bool_t kinicov) | |
426 | { | |
427 | // | |
428 | //routine for propagation | |
429 | // | |
430 | ||
431 | //only for SingleFit--> | |
432 | if(kinicov) | |
433 | IniCov(trackPar, tseed->GetNumberOfClusters()); | |
434 | //<-- | |
435 | ||
436 | Int_t drow=1; | |
437 | if(rowstart>rowstop) | |
438 | drow = -1; | |
439 | ||
440 | for(Int_t irow=rowstart; drow*irow<=drow*rowstop; irow+=drow){ | |
441 | if(0){ | |
442 | //only for momentum resolution investigation, dumm for usual usage | |
443 | if(eloss>0){ | |
444 | if(irow%2==0) | |
445 | continue; | |
446 | } | |
447 | else{ | |
448 | if(irow%2!=0) | |
449 | continue; | |
450 | } | |
451 | } | |
452 | ||
453 | AliTPCclusterMI *cl=tseed->GetClusterPointer(irow); | |
454 | if (!cl) continue; | |
455 | if (cl->GetX()< fgkXMin) continue; | |
456 | ||
457 | //if propagation not successful, trackPar is not changed | |
458 | AliExternalTrackParam tmppar(*trackPar); | |
459 | ||
460 | //--------------------------- to cure large chi2 in z, 2011-05-11. Thandks to M. Ivanov! --------------------------- | |
461 | const Int_t tmpsite = ((cl->GetDetector()%36)<18); | |
462 | if(tmpsite!=ksite && ksite!=-999){ | |
463 | Double_t *clscov=(Double_t*)tmppar.GetCovariance(); | |
464 | clscov[2]+=3*3; | |
465 | } | |
466 | ksite = tmpsite; | |
467 | ||
468 | //--------------------------- rotate cluster position to trackPar position --------------------------- | |
469 | //DO NOT rotate trackPar, there is "bug" in trackparam::rotate!! stay in the initial one defined as alpha = ATan2(posy0,posx0) | |
470 | Float_t gxyz[3]; | |
471 | cl->GetGlobalXYZ(gxyz); | |
472 | TVector3 ptogo(gxyz); | |
473 | ||
474 | //printf("test %d : %f %f %f\n", irow, gxyz[0], gxyz[1], gxyz[2]); | |
475 | ||
476 | const Double_t trkalpha = tmppar.GetAlpha(); | |
477 | ptogo.RotateZ(-trkalpha); | |
478 | const Double_t xTogo = ptogo.X(); | |
479 | const Double_t yTogo = ptogo.Y(); | |
480 | const Double_t zTogo = ptogo.Z(); | |
481 | ||
482 | //--------------------------- propagate --------------------------- | |
483 | //AliTrackerBase::PropagateTrackToBxByBz Double_t step = dir*TMath::Min(TMath::Abs(xToGo-xpos), maxStep); | |
484 | const Double_t maxStep = 1; | |
485 | const Bool_t rotateTo = kFALSE; | |
486 | const Double_t maxSnp = 0.8; | |
487 | ||
488 | //eloss critical only for combine fit!!! | |
489 | const Bool_t kpro = AliTrackerBase::PropagateTrackToBxByBz(&tmppar, xTogo, fgkMass, maxStep, rotateTo, maxSnp, eloss); | |
490 | if(!kpro){ | |
491 | nmiss++; | |
492 | continue; | |
493 | } | |
494 | ||
495 | //--------------------------- set error --------------------------- | |
496 | //necessary, help at mostly low p, and also high p | |
497 | Double_t cov[3]={0.01, 0., 0.01}; | |
498 | AliTPCseed::GetError(cl, &tmppar, cov[0],cov[2]); | |
499 | cov[0]*=cov[0]; | |
500 | cov[2]*=cov[2]; | |
501 | ||
502 | if(debugstreamer){ | |
503 | TVector3 tmpgxyz(gxyz); | |
504 | (*debugstreamer)<<"ErrParam"<< | |
505 | "Cl.="<<cl<< | |
506 | "T.="<<&tmppar<< | |
507 | "covy="<<cov[0]<< | |
508 | "covz="<<cov[2]<< | |
509 | "clpos.="<<&ptogo<< | |
510 | "gpos.="<<&tmpgxyz<< | |
511 | "\n"; | |
512 | } | |
513 | ||
514 | //--------------------------- get chi2 and THEN update --------------------------- | |
515 | Double_t yz[2]={yTogo, zTogo}; | |
516 | ||
517 | pchi2 += tmppar.GetPredictedChi2(yz, cov); | |
518 | ||
519 | tmppar.Update(yz,cov); | |
520 | ||
521 | //--------------------------- save change --------------------------- | |
522 | (*trackPar) = tmppar; | |
523 | ||
524 | nfit++; | |
525 | } | |
526 | } |