2 // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
4 /**************************************************************************
5 * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
6 * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for *
7 * full copyright notice. *
8 **************************************************************************/
10 // Use inner-tpc track params when its refit failed.
11 Bool_t g_esd_tracks_use_ip_on_failed_its_refit = kFALSE;
13 TString esd_track_title(AliESDtrack* t)
17 Int_t label = t->GetLabel(), index = t->GetID();
18 TString idx(index == kMinInt ? "<undef>" : Form("%d", index));
19 TString lbl(label == kMinInt ? "<undef>" : Form("%d", label));
25 s = Form("Index=%s, Label=%s\nChg=%d, Pdg=%d\n"
26 "pT=%.3f, pZ=%.3f\nV=(%.3f, %.3f, %.3f)\n",
27 idx.Data(), lbl.Data(), t->Charge(), 0,
28 TMath::Sqrt(p[0]*p[0] + p[1]*p[1]), p[2], v[0], v[1], v[2]);
31 s += "Det(in,out,refit,pid):\n";
32 o = AliESDtrack::kITSin;
33 s += Form("ITS (%d,%d,%d,%d) ", t->IsOn(o), t->IsOn(o<<1), t->IsOn(o<<2), t->IsOn(o<<3));
34 o = AliESDtrack::kTPCin;
35 s += Form("TPC(%d,%d,%d,%d)\n", t->IsOn(o), t->IsOn(o<<1), t->IsOn(o<<2), t->IsOn(o<<3));
36 o = AliESDtrack::kTRDin;
37 s += Form("TRD(%d,%d,%d,%d) ", t->IsOn(o), t->IsOn(o<<1), t->IsOn(o<<2), t->IsOn(o<<3));
38 o = AliESDtrack::kTOFin;
39 s += Form("TOF(%d,%d,%d,%d)\n", t->IsOn(o), t->IsOn(o<<1), t->IsOn(o<<2), t->IsOn(o<<3));
40 o = AliESDtrack::kHMPIDout;
41 s += Form("HMPID(out=%d,pid=%d)\n", t->IsOn(o), t->IsOn(o<<1));
42 s += Form("ESD pid=%d", t->IsOn(AliESDtrack::kESDpid));
44 if (t->IsOn(AliESDtrack::kESDpid))
48 s += Form("\n[%.2f %.2f %.2f %.2f %.2f]", pid[0], pid[1], pid[2], pid[3], pid[4]);
54 void esd_track_add_param(TEveTrack* track, AliExternalTrackParam* tp)
56 // Add additional track parameters as a path-mark to track.
61 Double_t pbuf[3], vbuf[3];
65 TEvePathMark pm(TEvePathMark::kReference);
68 track->AddPathMark(pm);
71 TEveTrack* esd_make_track(AliESDtrack *at, TEveTrackList* cont)
73 // Make a standard track representation and put it into given container.
75 // Choose which parameters to use a track's starting point.
76 // If gkFixFailedITSExtr is TRUE (FALSE by default) and
77 // if ITS refit failed, take track parameters at inner TPC radius.
78 AliExternalTrackParam* tp = at;
80 Bool_t innerTaken = kFALSE;
81 if ( ! at->IsOn(AliESDtrack::kITSrefit) && g_esd_tracks_use_ip_on_failed_its_refit)
83 tp = at->GetInnerParam();
87 Double_t pbuf[3], vbuf[3];
92 rt.fLabel = at->GetLabel();
93 rt.fIndex = at->GetID();
94 rt.fStatus = (Int_t) at->GetStatus();
95 rt.fSign = at->GetSign();
98 Double_t ep = at->GetP(), mc = at->GetMass();
99 rt.fBeta = ep/TMath::Sqrt(ep*ep + mc*mc);
101 TEveTrack* track = new TEveTrack(&rt, cont->GetPropagator());
102 track->SetAttLineAttMarker(cont);
103 track->SetName(Form("TEveTrack %d", at->GetID()));
104 track->SetElementTitle(esd_track_title(at));
106 // Add inner/outer track parameters as path-marks.
107 if (at->IsOn(AliESDtrack::kTPCrefit))
111 esd_track_add_param(track, at->GetInnerParam());
113 esd_track_add_param(track, at->GetOuterParam());
119 TEveTrackList* esd_tracks()
121 AliESDEvent* esd = AliEveEventManager::AssertESD();
123 TEveTrackList* cont = new TEveTrackList("ESD Tracks");
124 cont->SetMainColor(6);
125 TEveTrackPropagator* trkProp = cont->GetPropagator();
126 trkProp->SetMagField(0.1*esd->GetMagneticField());
127 trkProp->SetMaxR (520);
129 gEve->AddElement(cont);
132 for (Int_t n = 0; n < esd->GetNumberOfTracks(); ++n)
135 TEveTrack* track = esd_make_track(esd->GetTrack(n), cont);
137 cont->AddElement(track);
139 cont->SetTitle(Form("N=%d", count));
147 TEveElementList* esd_tracks_MI()
149 AliESDEvent* esd = AliEveEventManager::AssertESD();
151 TEveElementList* cont = new TEveElementList("ESD Tracks MI");
152 gEve->AddElement(cont);
155 for (Int_t n = 0; n < esd->GetNumberOfTracks(); ++n)
158 AliESDtrack* at = esd->GetTrack(n);
159 TEveLine* l = new TEveLine;
161 at->FillPolymarker(l, esd->GetMagneticField(), 0, 250, 5);
162 l->SetName(Form("ESDTrackMI %d", at->GetID()));
163 l->SetElementTitle(esd_track_title(at));
167 cont->SetTitle(Form("N=%d", count));
174 /******************************************************************************/
175 // esd_tracks_from_array()
176 /******************************************************************************/
178 TEveTrackList* esd_tracks_from_array(TCollection* col, AliESDEvent* esd=0)
180 // Retrieves AliESDTrack's from collection.
181 // See example usage with AliAnalysisTrackCuts in the next function.
183 if (esd == 0) esd = AliEveEventManager::AssertESD();
185 TEveTrackList* cont = new TEveTrackList("ESD Tracks");
186 cont->SetMainColor(6);
187 TEveTrackPropagator* trkProp = cont->GetPropagator();
188 trkProp->SetMagField(0.1*esd->GetMagneticField());
189 trkProp->SetMaxR (520);
191 gEve->AddElement(cont);
196 while ((obj = next()) != 0)
198 if (obj->IsA()->InheritsFrom("AliESDtrack") == kFALSE)
200 Warning("esd_tracks_from_array", "Object '%s', '%s' is not an AliESDtrack.",
201 obj->GetName(), obj->GetTitle());
206 AliESDtrack* at = (AliESDtrack*) obj;
208 TEveTrack* track = esd_make_track(at, cont);
209 cont->AddElement(track);
211 cont->SetTitle(Form("N=%d", count));
219 void esd_tracks_alianalcuts_demo()
221 AliESDEvent* esd = AliEveEventManager::AssertESD();
222 gSystem->Load("libANALYSIS");
224 AliAnalysisTrackCuts atc;
225 atc.SetPtRange(0.1, 5);
226 atc.SetRapRange(-1, 1);
228 esd_tracks_from_array(atc.GetAcceptedParticles(esd), esd);
231 /******************************************************************************/
232 // esd_tracks_by_category
233 /******************************************************************************/
235 Float_t get_sigma_to_vertex(AliESDtrack* esdTrack)
237 // Taken from: PWG0/esdTrackCuts/AliESDtrackCuts.cxx
238 // Float_t AliESDtrackCuts::GetSigmaToVertex(AliESDtrack* esdTrack)
243 esdTrack->GetImpactParameters(b,bCov);
244 if (bCov[0] <= 0 || bCov[2] <= 0)
246 printf("Estimated b resolution lower or equal zero!\n");
247 bCov[0] = bCov[2] = 0;
249 bRes[0] = TMath::Sqrt(bCov[0]);
250 bRes[1] = TMath::Sqrt(bCov[2]);
252 // -----------------------------------
253 // How to get to a n-sigma cut?
255 // The accumulated statistics from 0 to d is
257 // -> Erf(d/Sqrt(2)) for a 1-dim gauss (d = n_sigma)
258 // -> 1 - Exp(-d**2) for a 2-dim gauss (d*d = dx*dx + dy*dy != n_sigma)
260 // It means that for a 2-dim gauss: n_sigma(d) = Sqrt(2)*ErfInv(1 - Exp((-x**2)/2)
261 // Can this be expressed in a different way?
263 if (bRes[0] == 0 || bRes[1] == 0)
266 Float_t d = TMath::Sqrt(TMath::Power(b[0]/bRes[0],2) + TMath::Power(b[1]/bRes[1],2));
268 // stupid rounding problem screws up everything:
269 // if d is too big, TMath::Exp(...) gets 0, and TMath::ErfInverse(1) that should be infinite, gets 0 :(
270 if (TMath::Exp(-d * d / 2) < 1e-10)
273 d = TMath::ErfInverse(1 - TMath::Exp(-d * d / 2)) * TMath::Sqrt(2);
277 TEveElementList* g_esd_tracks_by_category_container = 0;
279 TEveElementList* esd_tracks_by_category()
281 // Import ESD tracks, separate them into several containers
282 // according to primary-vertex cut and ITS&TPC refit status.
284 AliESDEvent* esd = AliEveEventManager::AssertESD();
286 TEveElementList* cont = new TEveElementList("ESD Tracks by category");
287 gEve->AddElement(cont);
289 g_esd_tracks_by_category_container = cont;
291 const Int_t nCont = 7;
292 const Float_t maxR = 520;
293 const Float_t magF = 0.1*esd->GetMagneticField();
295 TEveTrackList *tl[nCont];
299 tl[0] = new TEveTrackList("Sigma < 3");
301 tl[0]->GetPropagator()->SetMagField(magF);
302 tl[0]->GetPropagator()->SetMaxR (maxR);
303 tl[0]->SetMainColor(3);
304 cont->AddElement(tl[0]);
306 tl[1] = new TEveTrackList("3 < Sigma < 5");
308 tl[1]->GetPropagator()->SetMagField(magF);
309 tl[1]->GetPropagator()->SetMaxR (maxR);
310 tl[1]->SetMainColor(7);
311 cont->AddElement(tl[1]);
313 tl[2] = new TEveTrackList("5 < Sigma");
315 tl[2]->GetPropagator()->SetMagField(magF);
316 tl[2]->GetPropagator()->SetMaxR (maxR);
317 tl[2]->SetMainColor(46);
318 cont->AddElement(tl[2]);
320 tl[3] = new TEveTrackList("no ITS refit; Sigma < 5");
322 tl[3]->GetPropagator()->SetMagField(magF);
323 tl[3]->GetPropagator()->SetMaxR (maxR);
324 tl[3]->SetMainColor(41);
325 cont->AddElement(tl[3]);
327 tl[4] = new TEveTrackList("no ITS refit; Sigma > 5");
329 tl[4]->GetPropagator()->SetMagField(magF);
330 tl[4]->GetPropagator()->SetMaxR (maxR);
331 tl[4]->SetMainColor(48);
332 cont->AddElement(tl[4]);
334 tl[5] = new TEveTrackList("no TPC refit");
336 tl[5]->GetPropagator()->SetMagField(magF);
337 tl[5]->GetPropagator()->SetMaxR (maxR);
338 tl[5]->SetMainColor(kRed);
339 cont->AddElement(tl[5]);
341 tl[6] = new TEveTrackList("ITS stand-alone");
343 tl[6]->GetPropagator()->SetMagField(magF);
344 tl[6]->GetPropagator()->SetMaxR (maxR);
345 tl[6]->SetMainColor(kMagenta - 9);
346 cont->AddElement(tl[6]);
348 for (Int_t n = 0; n < esd->GetNumberOfTracks(); ++n)
350 AliESDtrack* at = esd->GetTrack(n);
352 Float_t s = get_sigma_to_vertex(at);
355 else if (s <= 5) ti = 1;
358 if (at->IsOn(AliESDtrack::kITSin) && ! at->IsOn(AliESDtrack::kTPCin))
362 else if (at->IsOn(AliESDtrack::kTPCin) && ! at->IsOn(AliESDtrack::kTPCrefit))
366 else if ( ! at->IsOn(AliESDtrack::kITSrefit))
368 ti = (ti == 2) ? 4 : 3;
371 TEveTrackList* tlist = tl[ti];
375 TEveTrack* track = esd_make_track(at, tlist);
376 track->SetName(Form("TEveTrack idx=%d, sigma=%5.3f", at->GetID(), s));
377 tlist->AddElement(track);
380 for (Int_t ti = 0; ti < nCont; ++ti)
382 TEveTrackList* tlist = tl[ti];
383 tlist->SetName(Form("%s [%d]", tlist->GetName(), tlist->NumChildren()));
384 tlist->SetTitle(Form("N tracks=%d", tc[ti]));
388 cont->SetTitle(Form("N all tracks = %d", count));
389 // ??? The following does not always work:
390 cont->FindListTreeItem(gEve->GetListTree())->SetOpen(kTRUE);