3 Reve::Track* esd_make_track(Reve::TrackRnrStyle* rnrStyle,
5 AliExternalTrackParam* tp=0)
7 Double_t pbuf[3], vbuf[3];
12 rt.label = at->GetLabel();
13 rt.status = (Int_t) at->GetStatus();
14 rt.sign = tp->GetSign();
19 Double_t ep = at->GetP(), mc = at->GetMass();
20 rt.beta = ep/TMath::Sqrt(ep*ep + mc*mc);
22 Reve::Track* track = new Reve::Track(&rt, rnrStyle);
23 track->SetName(Form("ESDTrack %d", rt.label));
24 track->SetTitle(Form("pT=%.3f, pZ=%.3f; V=(%.3f, %.3f, %.3f)",
25 rt.sign*TMath::Hypot(rt.P.x, rt.P.y), rt.P.z,
26 rt.V.x, rt.V.y, rt.V.z));
30 Bool_t gkFixFailedITSExtr = kTRUE;
32 Reve::TrackList* esd_tracks(Double_t min_pt=0.1, Double_t max_pt=100)
34 AliESD* esd = Alieve::Event::AssertESD();
37 Double_t minptsq = min_pt*min_pt;
38 Double_t maxptsq = max_pt*max_pt;
41 TGListTree* l_tree = gReve->GetListTree();
42 TGListTreeItem* parent = gReve->GetEventTreeItem();
44 Reve::TrackList* cont = new Reve::TrackList("ESD Tracks");
45 cont->SetMainColor(Color_t(6));
46 Reve::TrackRnrStyle* rnrStyle = cont->GetRnrStyle();
47 rnrStyle->SetMagField( esd->GetMagneticField() );
49 TGListTreeItem *holder = gReve->AddRenderElement(cont);
53 for (Int_t n=0; n<esd->GetNumberOfTracks(); n++) {
54 AliESDtrack* at = esd->GetTrack(n);
56 // Here would be sweet to have TObjectFormula.
58 ptsq = pbuf[0]*pbuf[0] + pbuf[1]*pbuf[1];
59 if(ptsq < minptsq || ptsq > maxptsq)
64 // If ITS refit failed, take track parameters at inner TPC radius.
65 AliExternalTrackParam* tp = at;
66 if (gkFixFailedITSExtr && !at->IsOn(AliESDtrack::kITSrefit)) {
67 tp = at->GetInnerParam();
70 Reve::Track* track = esd_make_track(rnrStyle, at, tp);
71 cont->AddElement(track);
72 gReve->AddRenderElement(holder, track);
75 const Text_t* tooltip = Form("pT ~ (%.2lf, %.2lf), N=%d", min_pt, max_pt, count);
76 cont->SetTitle(tooltip); // Not broadcasted automatically ...
77 holder->SetTipText(tooltip);
81 gReve->DrawRenderElement(cont);
86 Reve::TrackList* esd_tracks_from_array(TCollection* col, AliESD* esd=0)
88 // Retrieves AliESDTrack's from collection.
89 // See example usage with AliAnalysisTrackCuts in the next function.
91 if(esd == 0) esd = Alieve::Event::AssertESD();
94 TGListTree* l_tree = gReve->GetListTree();
95 TGListTreeItem* parent = gReve->GetEventTreeItem();
97 Reve::TrackList* cont = new Reve::TrackList("ESD Tracks");
98 cont->SetMainColor(Color_t(6));
99 Reve::TrackRnrStyle* rnrStyle = cont->GetRnrStyle();
100 rnrStyle->SetMagField( esd->GetMagneticField() );
102 TGListTreeItem *holder = gReve->AddRenderElement(cont);
107 while((obj = next()) != 0) {
108 if(obj->IsA()->InheritsFrom("AliESDtrack") == kFALSE) {
109 Warning("Object '%s', '%s' is not an AliESDtrack.",
110 obj->GetName(), obj->GetTitle());
115 AliESDtrack* at = (AliESDtrack*) obj;
117 Reve::Track* track = esd_make_track(rnrStyle, at);
118 cont->AddElement(track);
119 gReve->AddRenderElement(holder, track);
122 const Text_t* tooltip = Form("N=%d", count);
123 cont->SetTitle(tooltip); // Not broadcasted automatically ...
124 holder->SetTipText(tooltip);
128 gReve->DrawRenderElement(cont);
133 void esd_tracks_alianalcuts_demo()
135 AliESD* esd = Alieve::Event::AssertESD();
136 gSystem->Load("libANALYSIS");
138 AliAnalysisTrackCuts atc;
139 atc.SetPtRange(0.1, 5);
140 atc.SetRapRange(-1, 1);
142 esd_tracks_from_array(atc.GetAcceptedParticles(esd), esd);