Fix the way how dependence on esd_tracks.C is handled.
[u/mrichter/AliRoot.git] / EVE / alice-macros / esd_hlt_tracks.C
CommitLineData
b658d7e4 1// $Id$
2//**************************************************************************
3//* This file is property of and copyright by the ALICE HLT Project *
4//* ALICE Experiment at CERN, All rights reserved. *
5//* *
6//* Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> *
7//* for The ALICE HLT Project. *
8//* *
9//* Permission to use, copy, modify and distribute this software and its *
10//* documentation strictly for non-commercial purposes is hereby granted *
11//* without fee, provided that the above copyright notice appears in all *
12//* copies and that both the copyright notice and this permission notice *
13//* appear in the supporting documentation. The authors make no claims *
14//* about the suitability of this software for any purpose. It is *
15//* provided "as is" without express or implied warranty. *
16//**************************************************************************
17
18/**
19 * Display ESD Tracks from the HLTesdTree in AliEVE.
20 *
21 * Usage:
22 * <pre>
23 * alieve $ALICE_ROOT/EVE/alice-macros/event_next.C \
24 * $ALICE_ROOT/EVE/macros/alieve_init.C \
25 * $ALICE_ROOT/EVE/alice-macros/geom_simple.C \
58a0d147 26 * $ALICE_ROOT/EVE/alice-macros/esd_hlt_tracks.C
b658d7e4 27 * </pre>
28 * Display is changed to next event by executing event_next()
29 * from the root prompt.
30 * <pre>
31 * event_next(); esd_tracks(); esd_hlt_tracks();
32 * </pre>
33 *
34 * @ingroup alihlt_tpc
35 * @author Matthias.Richter@ift.uib.no
36 * @date 2008-11-22
37 */
38TEveTrackList* esd_hlt_tracks()
39{
40 if (!TClass::GetClass("AliEveEventManager")) {
41 Error("hlt_tpc_clusters.C", "EVE library not loaded, please start alieve correctly");
42 return NULL;
43 }
44
45 AliEveEventManager* eveManager=AliEveEventManager::GetMaster();
46 if (!eveManager) {
47 Error("esd_hlt_tracks.C", "EVE manager not initialized");
48 return NULL;
49 }
50
213ff01e 51 TEveUtil::LoadMacro("esd_tracks.C");
52
b658d7e4 53 int eventId=eveManager->GetEventId();
54 TFile* esdFile=eveManager->GetESDFile();
55 if (!esdFile) {
56 Warning("esd_hlt_tracks.C", "can not get esd file from EVE manager");
57 return NULL;
58 }
59
60 TObject* pObj=NULL;
61 TTree* pHLTTree=NULL;
62 esdFile->GetObject("HLTesdTree", pObj);
63 if (!pObj || (pHLTTree=dynamic_cast<TTree*>(pObj))==NULL) {
64 Info("esd_hlt_tracks.C", "no HLT ESD tree in ESD file");
65 return NULL;
66 }
67 if (pHLTTree->GetEntries()<=eventId) {
68 Warning("esd_hlt_tracks.C", "skiping event %d: out of range %d", eventId, pHLTTree->GetEntries());
69 return NULL;
70 }
71
72 AliESDEvent* esd=new AliESDEvent;
73 esd->ReadFromTree(pHLTTree);
74 pHLTTree->GetEntry(eventId);
75
76 TEveTrackList* cont = new TEveTrackList("HLT ESD Tracks");
58a0d147 77 cont->SetMainColor(kCyan+3);
d0545a3c 78 esd_track_propagator_setup(cont->GetPropagator(),
79 0.1*esd->GetMagneticField(), 520);
b658d7e4 80
81 eveManager->AddElement(cont);
82
83 Int_t count = 0;
84 for (Int_t n = 0; n < esd->GetNumberOfTracks(); ++n)
85 {
86 ++count;
87 TEveTrack* track = esd_make_track(esd->GetTrack(n), cont);
88
89 cont->AddElement(track);
90 }
91 cont->SetTitle(Form("N=%d", count));
92 cont->MakeTracks();
93
94 gEve->Redraw3D();
95
96 return cont;
97}