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Commit | Line | Data |
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5a5a1232 | 1 | // $Id$ |
d810d0de | 2 | // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007 |
3 | ||
4 | /************************************************************************** | |
5 | * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. * | |
6 | * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for * | |
51346b82 | 7 | * full copyright notice. * |
d810d0de | 8 | **************************************************************************/ |
5a5a1232 | 9 | |
a6337352 | 10 | TEveTrack* esd_make_track(TEveTrackPropagator* trkProp, |
a15e6d7d | 11 | Int_t index, |
12 | AliESDtrack* at, | |
13 | AliExternalTrackParam* tp=0) | |
86f12f78 | 14 | { |
a8600b56 | 15 | // Helper function |
84aff7a4 | 16 | Double_t pbuf[3], vbuf[3]; |
17 | TEveRecTrack rt; | |
86f12f78 | 18 | |
19 | if(tp == 0) tp = at; | |
20 | ||
84aff7a4 | 21 | rt.fLabel = at->GetLabel(); |
22 | rt.fIndex = index; | |
23 | rt.fStatus = (Int_t) at->GetStatus(); | |
24 | rt.fSign = tp->GetSign(); | |
86f12f78 | 25 | tp->GetXYZ(vbuf); |
84aff7a4 | 26 | rt.fV.Set(vbuf); |
86f12f78 | 27 | tp->GetPxPyPz(pbuf); |
84aff7a4 | 28 | rt.fP.Set(pbuf); |
86f12f78 | 29 | Double_t ep = at->GetP(), mc = at->GetMass(); |
84aff7a4 | 30 | rt.fBeta = ep/TMath::Sqrt(ep*ep + mc*mc); |
51346b82 | 31 | |
a6337352 | 32 | TEveTrack* track = new TEveTrack(&rt, trkProp); |
7be1e8cd | 33 | //PH The line below is replaced waiting for a fix in Root |
34 | //PH which permits to use variable siza arguments in CINT | |
35 | //PH on some platforms (alphalinuxgcc, solariscc5, etc.) | |
84aff7a4 | 36 | //PH track->SetName(Form("ESDTrack %d", rt.fLabel)); |
7be1e8cd | 37 | //PH track->SetTitle(Form("pT=%.3f, pZ=%.3f; V=(%.3f, %.3f, %.3f)", |
84aff7a4 | 38 | //PH rt.fSign*TMath::Hypot(rt.fP.fX, rt.fP.fY), rt.fP.fZ, |
39 | //PH rt.fV.fX, rt.fV.fY, rt.fV.fZ)); | |
7be1e8cd | 40 | char form[1000]; |
84aff7a4 | 41 | sprintf(form,"TEveTrack %d", rt.fIndex); |
7be1e8cd | 42 | track->SetName(form); |
fc9514f5 | 43 | track->SetStdTitle(); |
86f12f78 | 44 | return track; |
45 | } | |
46 | ||
c222eb1d | 47 | void esd_track_add_param(TEveTrack* track, AliExternalTrackParam* tp) |
48 | { | |
49 | if (tp == 0) | |
50 | return; | |
51 | ||
52 | Double_t pbuf[3], vbuf[3]; | |
53 | tp->GetXYZ(vbuf); | |
54 | tp->GetPxPyPz(pbuf); | |
55 | ||
a15e6d7d | 56 | TEvePathMark pm(TEvePathMark::kReference); |
57 | pm.fV.Set(vbuf); | |
58 | pm.fP.Set(pbuf); | |
c222eb1d | 59 | track->AddPathMark(pm); |
60 | } | |
61 | ||
a15e6d7d | 62 | // Use inner-tpc track params when its refit failed. |
c222eb1d | 63 | Bool_t gkFixFailedITSExtr = kFALSE; |
a15e6d7d | 64 | |
65 | // Also show lines as generated by AliESDtrack. | |
66 | Bool_t gkMakeTrackParamLines = kFALSE; | |
86f12f78 | 67 | |
a6337352 | 68 | TEveTrackList* esd_tracks(Double_t min_pt=0, Double_t max_pt=10000) |
5a5a1232 | 69 | { |
d810d0de | 70 | AliESDEvent* esd = AliEveEventManager::AssertESD(); |
5a5a1232 | 71 | |
72 | Double_t minptsq = min_pt*min_pt; | |
73 | Double_t maxptsq = max_pt*max_pt; | |
74 | Double_t ptsq; | |
75 | ||
51346b82 | 76 | TEveTrackList* cont = new TEveTrackList("ESD Tracks"); |
fbc350a3 | 77 | cont->SetMainColor(6); |
a6337352 | 78 | TEveTrackPropagator* trkProp = cont->GetPropagator(); |
79 | trkProp->SetMagField( 0.1*esd->GetMagneticField() ); | |
80 | trkProp->SetMaxR ( 520 ); | |
5a5a1232 | 81 | |
84aff7a4 | 82 | gEve->AddElement(cont); |
5a5a1232 | 83 | |
c222eb1d | 84 | TEveElementList* contLines = 0; |
85 | if (gkMakeTrackParamLines) | |
86 | { | |
87 | contLines = new TEveElementList("MyTracks"); | |
88 | gEve->AddElement(contLines); | |
89 | } | |
90 | ||
86f12f78 | 91 | Int_t count = 0; |
92 | Double_t pbuf[3]; | |
d31ac39d | 93 | for (Int_t n=0; n<esd->GetNumberOfTracks(); n++) |
94 | { | |
86f12f78 | 95 | AliESDtrack* at = esd->GetTrack(n); |
5a5a1232 | 96 | |
97 | // Here would be sweet to have TObjectFormula. | |
98 | at->GetPxPyPz(pbuf); | |
99 | ptsq = pbuf[0]*pbuf[0] + pbuf[1]*pbuf[1]; | |
100 | if(ptsq < minptsq || ptsq > maxptsq) | |
101 | continue; | |
102 | ||
103 | ++count; | |
104 | ||
a8600b56 | 105 | // If gkFixFailedITSExtr is TRUE (FALSE by default) and |
106 | // if ITS refit failed, take track parameters at inner TPC radius. | |
c222eb1d | 107 | Bool_t innerTaken = kFALSE; |
86f12f78 | 108 | AliExternalTrackParam* tp = at; |
109 | if (gkFixFailedITSExtr && !at->IsOn(AliESDtrack::kITSrefit)) { | |
c222eb1d | 110 | tp = at->GetInnerParam(); |
111 | innerTaken = kTRUE; | |
86f12f78 | 112 | } |
5a5a1232 | 113 | |
a6337352 | 114 | TEveTrack* track = esd_make_track(trkProp, n, at, tp); |
32e219c2 | 115 | track->SetAttLineAttMarker(cont); |
c222eb1d | 116 | |
a15e6d7d | 117 | if (!innerTaken) { |
118 | esd_track_add_param(track, at->GetInnerParam()); | |
119 | } | |
c222eb1d | 120 | // esd_track_add_param(track, at->GetOuterParam()); |
121 | ||
84aff7a4 | 122 | gEve->AddElement(track, cont); |
c222eb1d | 123 | |
124 | if (gkMakeTrackParamLines) { | |
125 | TEveLine* l = new TEveLine; | |
126 | l->SetName(Form("Track%d", count)); | |
fbc350a3 | 127 | l->SetLineColor(5); |
c222eb1d | 128 | at->FillPolymarker(l, esd->GetMagneticField(), 0, 250, 5); |
129 | contLines->AddElement(l); | |
130 | } | |
5a5a1232 | 131 | } |
132 | ||
7be1e8cd | 133 | //PH The line below is replaced waiting for a fix in Root |
134 | //PH which permits to use variable siza arguments in CINT | |
135 | //PH on some platforms (alphalinuxgcc, solariscc5, etc.) | |
136 | //PH const Text_t* tooltip = Form("pT ~ (%.2lf, %.2lf), N=%d", min_pt, max_pt, count); | |
137 | char tooltip[1000]; | |
138 | sprintf(tooltip,"pT ~ (%.2lf, %.2lf), N=%d", min_pt, max_pt, count); | |
5a5a1232 | 139 | cont->SetTitle(tooltip); // Not broadcasted automatically ... |
5a5a1232 | 140 | |
141 | cont->MakeTracks(); | |
32e219c2 | 142 | |
84aff7a4 | 143 | gEve->Redraw3D(); |
5a5a1232 | 144 | |
145 | return cont; | |
146 | } | |
147 | ||
57ffa5fb | 148 | /******************************************************************************/ |
a8600b56 | 149 | // esd_tracks_from_array() |
57ffa5fb | 150 | /******************************************************************************/ |
a8600b56 | 151 | |
84aff7a4 | 152 | TEveTrackList* esd_tracks_from_array(TCollection* col, AliESDEvent* esd=0) |
5a5a1232 | 153 | { |
154 | // Retrieves AliESDTrack's from collection. | |
155 | // See example usage with AliAnalysisTrackCuts in the next function. | |
156 | ||
d810d0de | 157 | if (esd == 0) esd = AliEveEventManager::AssertESD(); |
86f12f78 | 158 | |
51346b82 | 159 | TEveTrackList* cont = new TEveTrackList("ESD Tracks"); |
fbc350a3 | 160 | cont->SetMainColor(6); |
a6337352 | 161 | TEveTrackPropagator* trkProp = cont->GetPropagator(); |
162 | trkProp->SetMagField( 0.1*esd->GetMagneticField() ); | |
163 | trkProp->SetMaxR ( 520 ); | |
5a5a1232 | 164 | |
84aff7a4 | 165 | gEve->AddElement(cont); |
5a5a1232 | 166 | |
5a5a1232 | 167 | Int_t count = 0; |
168 | TIter next(col); | |
169 | TObject *obj; | |
84aff7a4 | 170 | while ((obj = next()) != 0) |
d31ac39d | 171 | { |
84aff7a4 | 172 | if (obj->IsA()->InheritsFrom("AliESDtrack") == kFALSE) { |
5a5a1232 | 173 | Warning("Object '%s', '%s' is not an AliESDtrack.", |
174 | obj->GetName(), obj->GetTitle()); | |
175 | continue; | |
176 | } | |
177 | ||
178 | ++count; | |
86f12f78 | 179 | AliESDtrack* at = (AliESDtrack*) obj; |
5a5a1232 | 180 | |
a6337352 | 181 | TEveTrack* track = esd_make_track(trkProp, count, at); |
32e219c2 | 182 | track->SetAttLineAttMarker(cont); |
84aff7a4 | 183 | gEve->AddElement(track, cont); |
5a5a1232 | 184 | } |
185 | ||
7be1e8cd | 186 | //PH The line below is replaced waiting for a fix in Root |
187 | //PH which permits to use variable siza arguments in CINT | |
188 | //PH on some platforms (alphalinuxgcc, solariscc5, etc.) | |
189 | //PH const Text_t* tooltip = Form("N=%d", count); | |
190 | const tooltip[1000]; | |
191 | sprintf(tooltip,"N=%d", count); | |
5a5a1232 | 192 | cont->SetTitle(tooltip); // Not broadcasted automatically ... |
5a5a1232 | 193 | |
194 | cont->MakeTracks(); | |
32e219c2 | 195 | |
84aff7a4 | 196 | gEve->Redraw3D(); |
5a5a1232 | 197 | |
198 | return cont; | |
199 | } | |
200 | ||
201 | void esd_tracks_alianalcuts_demo() | |
202 | { | |
d810d0de | 203 | AliESDEvent* esd = AliEveEventManager::AssertESD(); |
86f12f78 | 204 | gSystem->Load("libANALYSIS"); |
5a5a1232 | 205 | |
206 | AliAnalysisTrackCuts atc; | |
207 | atc.SetPtRange(0.1, 5); | |
208 | atc.SetRapRange(-1, 1); | |
209 | ||
86f12f78 | 210 | esd_tracks_from_array(atc.GetAcceptedParticles(esd), esd); |
5a5a1232 | 211 | } |
a8600b56 | 212 | |
57ffa5fb | 213 | /******************************************************************************/ |
a8600b56 | 214 | // esd_tracks_vertex_cut |
57ffa5fb | 215 | /******************************************************************************/ |
a8600b56 | 216 | |
217 | Float_t get_sigma_to_vertex(AliESDtrack* esdTrack) | |
218 | { | |
219 | // Taken from: PWG0/esdTrackCuts/AliESDtrackCuts.cxx | |
220 | // Float_t AliESDtrackCuts::GetSigmaToVertex(AliESDtrack* esdTrack) | |
221 | ||
222 | Float_t b[2]; | |
223 | Float_t bRes[2]; | |
224 | Float_t bCov[3]; | |
225 | esdTrack->GetImpactParameters(b,bCov); | |
226 | if (bCov[0]<=0 || bCov[2]<=0) { | |
d31ac39d | 227 | printf("Estimated b resolution lower or equal zero!\n"); |
a8600b56 | 228 | bCov[0]=0; bCov[2]=0; |
229 | } | |
230 | bRes[0] = TMath::Sqrt(bCov[0]); | |
231 | bRes[1] = TMath::Sqrt(bCov[2]); | |
232 | ||
233 | // ----------------------------------- | |
234 | // How to get to a n-sigma cut? | |
235 | // | |
236 | // The accumulated statistics from 0 to d is | |
237 | // | |
238 | // -> Erf(d/Sqrt(2)) for a 1-dim gauss (d = n_sigma) | |
239 | // -> 1 - Exp(-d**2) for a 2-dim gauss (d*d = dx*dx + dy*dy != n_sigma) | |
240 | // | |
241 | // It means that for a 2-dim gauss: n_sigma(d) = Sqrt(2)*ErfInv(1 - Exp((-x**2)/2) | |
242 | // Can this be expressed in a different way? | |
243 | ||
244 | if (bRes[0] == 0 || bRes[1] ==0) | |
245 | return -1; | |
246 | ||
247 | Float_t d = TMath::Sqrt(TMath::Power(b[0]/bRes[0],2) + TMath::Power(b[1]/bRes[1],2)); | |
248 | ||
249 | // stupid rounding problem screws up everything: | |
250 | // if d is too big, TMath::Exp(...) gets 0, and TMath::ErfInverse(1) that should be infinite, gets 0 :( | |
251 | if (TMath::Exp(-d * d / 2) < 1e-10) | |
252 | return 1000; | |
253 | ||
254 | d = TMath::ErfInverse(1 - TMath::Exp(-d * d / 2)) * TMath::Sqrt(2); | |
255 | return d; | |
256 | } | |
257 | ||
84aff7a4 | 258 | TEveElementList* esd_tracks_vertex_cut() |
a8600b56 | 259 | { |
f206464b | 260 | // Import ESD tracks, separate them into five containers according to |
261 | // primary-vertex cut and ITS refit status. | |
a8600b56 | 262 | |
d810d0de | 263 | AliESDEvent* esd = AliEveEventManager::AssertESD(); |
a8600b56 | 264 | |
ca49b003 | 265 | TEveElementList* cont = new TEveElementList("ESD Tracks"); |
266 | ||
84aff7a4 | 267 | gEve->AddElement(cont); |
268 | TEveTrackList *tl[5]; | |
f206464b | 269 | Int_t tc[5]; |
a8600b56 | 270 | Int_t count = 0; |
271 | ||
84aff7a4 | 272 | tl[0] = new TEveTrackList("Sigma < 3"); |
a8600b56 | 273 | tc[0] = 0; |
daaa6c4d | 274 | tl[0]->GetPropagator()->SetMagField( 0.1*esd->GetMagneticField() ); |
a6337352 | 275 | tl[0]->GetPropagator()->SetMaxR ( 520 ); |
fbc350a3 | 276 | tl[0]->SetMainColor(3); |
84aff7a4 | 277 | gEve->AddElement(tl[0], cont); |
a8600b56 | 278 | |
84aff7a4 | 279 | tl[1] = new TEveTrackList("3 < Sigma < 5"); |
a8600b56 | 280 | tc[1] = 0; |
daaa6c4d | 281 | tl[1]->GetPropagator()->SetMagField( 0.1*esd->GetMagneticField() ); |
a6337352 | 282 | tl[1]->GetPropagator()->SetMaxR ( 520 ); |
fbc350a3 | 283 | tl[1]->SetMainColor(7); |
84aff7a4 | 284 | gEve->AddElement(tl[1], cont); |
a8600b56 | 285 | |
84aff7a4 | 286 | tl[2] = new TEveTrackList("5 < Sigma"); |
a8600b56 | 287 | tc[2] = 0; |
daaa6c4d | 288 | tl[2]->GetPropagator()->SetMagField( 0.1*esd->GetMagneticField() ); |
a6337352 | 289 | tl[2]->GetPropagator()->SetMaxR ( 520 ); |
fbc350a3 | 290 | tl[2]->SetMainColor(46); |
84aff7a4 | 291 | gEve->AddElement(tl[2], cont); |
a8600b56 | 292 | |
84aff7a4 | 293 | tl[3] = new TEveTrackList("no ITS refit; Sigma < 5"); |
a8600b56 | 294 | tc[3] = 0; |
daaa6c4d | 295 | tl[3]->GetPropagator()->SetMagField( 0.1*esd->GetMagneticField() ); |
a6337352 | 296 | tl[3]->GetPropagator()->SetMaxR ( 520 ); |
fbc350a3 | 297 | tl[3]->SetMainColor(41); |
84aff7a4 | 298 | gEve->AddElement(tl[3], cont); |
a8600b56 | 299 | |
84aff7a4 | 300 | tl[4] = new TEveTrackList("no ITS refit; Sigma > 5"); |
f206464b | 301 | tc[4] = 0; |
daaa6c4d | 302 | tl[4]->GetPropagator()->SetMagField( 0.1*esd->GetMagneticField() ); |
a6337352 | 303 | tl[4]->GetPropagator()->SetMaxR ( 520 ); |
fbc350a3 | 304 | tl[4]->SetMainColor(48); |
84aff7a4 | 305 | gEve->AddElement(tl[4], cont); |
f206464b | 306 | |
d31ac39d | 307 | for (Int_t n=0; n<esd->GetNumberOfTracks(); n++) |
308 | { | |
a8600b56 | 309 | AliESDtrack* at = esd->GetTrack(n); |
310 | ||
311 | Float_t s = get_sigma_to_vertex(at); | |
312 | Int_t ti; | |
313 | if (s < 3) ti = 0; | |
314 | else if (s <= 5) ti = 1; | |
315 | else ti = 2; | |
316 | ||
317 | AliExternalTrackParam* tp = at; | |
f206464b | 318 | // If ITS refit failed, optionally take track parameters at inner |
319 | // TPC radius and put track in a special container. | |
a8600b56 | 320 | // This ignores state of gkFixFailedITSExtr (used in esd_tracks()). |
321 | // Use BOTH functions to compare results. | |
322 | if (!at->IsOn(AliESDtrack::kITSrefit)) { | |
f206464b | 323 | // tp = at->GetInnerParam(); |
324 | ti = (ti == 2) ? 4 : 3; | |
a8600b56 | 325 | } |
326 | ||
84aff7a4 | 327 | TEveTrackList* tlist = tl[ti]; |
a8600b56 | 328 | ++tc[ti]; |
329 | ++count; | |
330 | ||
84aff7a4 | 331 | TEveTrack* track = esd_make_track(tlist->GetPropagator(), n, at, tp); |
51346b82 | 332 | track->SetAttLineAttMarker(tlist); |
d31ac39d | 333 | |
7be1e8cd | 334 | //PH The line below is replaced waiting for a fix in Root |
335 | //PH which permits to use variable siza arguments in CINT | |
336 | //PH on some platforms (alphalinuxgcc, solariscc5, etc.) | |
337 | //PH track->SetName(Form("track %d, sigma=%5.3f", at->GetLabel(), s)); | |
338 | char form[1000]; | |
84aff7a4 | 339 | sprintf(form,"TEveTrack idx=%d, sigma=%5.3f", at->GetID(), s); |
7be1e8cd | 340 | track->SetName(form); |
84aff7a4 | 341 | gEve->AddElement(track, tlist); |
a8600b56 | 342 | } |
343 | ||
f206464b | 344 | for (Int_t ti=0; ti<5; ++ti) { |
84aff7a4 | 345 | TEveTrackList* tlist = tl[ti]; |
7be1e8cd | 346 | //PH The line below is replaced waiting for a fix in Root |
347 | //PH which permits to use variable siza arguments in CINT | |
348 | //PH on some platforms (alphalinuxgcc, solariscc5, etc.) | |
349 | //PH const Text_t* tooltip = Form("N tracks=%d", tc[ti]); | |
846b5c55 | 350 | //MT Modified somewhat. |
351 | char buff[1000]; | |
fbc350a3 | 352 | sprintf(buff, "%s [%d]", tlist->GetName(), tlist->NumChildren()); |
846b5c55 | 353 | tlist->SetName(buff); |
354 | sprintf(buff, "N tracks=%d", tc[ti]); | |
355 | tlist->SetTitle(buff); // Not broadcasted automatically ... | |
a8600b56 | 356 | |
357 | tlist->MakeTracks(); | |
a8600b56 | 358 | } |
7be1e8cd | 359 | //PH The line below is replaced waiting for a fix in Root |
360 | //PH which permits to use variable siza arguments in CINT | |
361 | //PH on some platforms (alphalinuxgcc, solariscc5, etc.) | |
362 | //PH cont->SetTitle(Form("N all tracks = %d", count)); | |
363 | char form[1000]; | |
364 | sprintf(form,"N all tracks = %d", count); | |
365 | cont->SetTitle(form); | |
84aff7a4 | 366 | gEve->Redraw3D(); |
a8600b56 | 367 | |
368 | return cont; | |
369 | } |