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 // Lines commented with //x should be reactivated when we
11 // move to a newer ROOT (after 5.25.2).
12 // Corresponding lines that are now replacing them should be removed.
14 // The problem was the TEveTrackProjected did not support projection
15 // of tracks with locked points -- and we do that for tracklets.
17 // Maybe it would be even better to have AliEveTracklet : public TEveLine
18 // and support both in AliEveTrackCounter.
19 // Or have trackelt counter -- as not all histograms collected for tracks
20 // are relevant for tracklets.
22 TEveTrackList* esd_spd_tracklets(Float_t radius=8, Width_t line_width=3)
24 // radius - cylindrical radius to which the tracklets should be extrapolated
26 AliESDEvent *esd = AliEveEventManager::AssertESD();
27 AliESDVertex *pv = esd->GetPrimaryVertexSPD();
28 AliMultiplicity *mul = esd->GetMultiplicity();
30 TEveTrackList *cont = new TEveTrackList("SPD Tracklets");
31 cont->SetTitle(Form("N=%d", mul->GetNumberOfTracklets()));
32 cont->SetMainColor(7);
33 cont->SetLineWidth(line_width);
35 TEveTrackPropagator* prop = cont->GetPropagator();
36 prop->SetMaxR(radius);
37 gEve->AddElement(cont);
39 for (Int_t i = 0; i < mul->GetNumberOfTracklets(); ++i)
41 Float_t theta = mul->GetTheta(i);
42 Float_t phi = mul->GetPhi(i);
44 AliEveTracklet* t = new AliEveTracklet(pv, theta, phi, prop);
45 t->SetAttLineAttMarker(cont);
46 t->SetElementName(Form("Tracklet %d", i));
47 t->SetElementTitle(Form("id=%d: theta=%.3f, phi=%.3f", i, theta, phi));