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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 \ | |
26 | * $ALICE_ROOT/EVE/alice-macros/esd_tracks.C \ | |
27 | * $ALICE_ROOT/HLT/TPCLib/EVE/macros/esd_hlt_tracks.C | |
28 | * </pre> | |
29 | * Display is changed to next event by executing event_next() | |
30 | * from the root prompt. | |
31 | * <pre> | |
32 | * event_next(); esd_tracks(); esd_hlt_tracks(); | |
33 | * </pre> | |
34 | * | |
35 | * @ingroup alihlt_tpc | |
36 | * @author Matthias.Richter@ift.uib.no | |
37 | * @date 2008-11-22 | |
38 | */ | |
39 | TEveTrackList* esd_hlt_tracks() | |
40 | { | |
41 | if (!TClass::GetClass("AliEveEventManager")) { | |
42 | Error("hlt_tpc_clusters.C", "EVE library not loaded, please start alieve correctly"); | |
43 | return NULL; | |
44 | } | |
45 | ||
46 | AliEveEventManager* eveManager=AliEveEventManager::GetMaster(); | |
47 | if (!eveManager) { | |
48 | Error("esd_hlt_tracks.C", "EVE manager not initialized"); | |
49 | return NULL; | |
50 | } | |
51 | ||
52 | int eventId=eveManager->GetEventId(); | |
53 | TFile* esdFile=eveManager->GetESDFile(); | |
54 | if (!esdFile) { | |
55 | Warning("esd_hlt_tracks.C", "can not get esd file from EVE manager"); | |
56 | return NULL; | |
57 | } | |
58 | ||
59 | TObject* pObj=NULL; | |
60 | TTree* pHLTTree=NULL; | |
61 | esdFile->GetObject("HLTesdTree", pObj); | |
62 | if (!pObj || (pHLTTree=dynamic_cast<TTree*>(pObj))==NULL) { | |
63 | Info("esd_hlt_tracks.C", "no HLT ESD tree in ESD file"); | |
64 | return NULL; | |
65 | } | |
66 | if (pHLTTree->GetEntries()<=eventId) { | |
67 | Warning("esd_hlt_tracks.C", "skiping event %d: out of range %d", eventId, pHLTTree->GetEntries()); | |
68 | return NULL; | |
69 | } | |
70 | ||
71 | AliESDEvent* esd=new AliESDEvent; | |
72 | esd->ReadFromTree(pHLTTree); | |
73 | pHLTTree->GetEntry(eventId); | |
74 | ||
75 | TEveTrackList* cont = new TEveTrackList("HLT ESD Tracks"); | |
76 | cont->SetMainColor(7); | |
77 | TEveTrackPropagator* trkProp = cont->GetPropagator(); | |
78 | trkProp->SetMagField(0.1*esd->GetMagneticField()); | |
79 | trkProp->SetMaxR (520); | |
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 | } |