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Commit | Line | Data |
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578adbef | 1 | // $Id$ |
2 | // | |
3 | // Class to select tracks in MC events. | |
4 | // | |
5 | // Author: S. Aiola | |
6 | ||
7 | #include "AliEmcalMCTrackSelector.h" | |
8 | ||
9 | #include <TClonesArray.h> | |
10 | ||
11 | #include "AliAnalysisManager.h" | |
12 | #include "AliVEvent.h" | |
13 | #include "AliMCEvent.h" | |
14 | #include "AliVParticle.h" | |
15 | #include "AliLog.h" | |
16 | ||
17 | ClassImp(AliEmcalMCTrackSelector) | |
18 | ||
19 | //________________________________________________________________________ | |
20 | AliEmcalMCTrackSelector::AliEmcalMCTrackSelector() : | |
21 | AliAnalysisTaskSE("AliEmcalMCTrackSelector"), | |
22 | fTracksOutName("PicoTracks"), | |
23 | fRejectNK(kFALSE), | |
24 | fChargedMC(kFALSE), | |
25 | fTracksOut(0) | |
26 | { | |
27 | // Constructor. | |
28 | } | |
29 | ||
30 | //________________________________________________________________________ | |
31 | AliEmcalMCTrackSelector::AliEmcalMCTrackSelector(const char *name) : | |
32 | AliAnalysisTaskSE(name), | |
33 | fTracksOutName("PicoTracks"), | |
34 | fRejectNK(kFALSE), | |
35 | fChargedMC(kFALSE), | |
36 | fTracksOut(0) | |
37 | { | |
38 | // Constructor. | |
39 | } | |
40 | ||
41 | //________________________________________________________________________ | |
42 | AliEmcalMCTrackSelector::~AliEmcalMCTrackSelector() | |
43 | { | |
44 | // Destructor. | |
45 | } | |
46 | ||
47 | //________________________________________________________________________ | |
48 | void AliEmcalMCTrackSelector::UserCreateOutputObjects() | |
49 | { | |
50 | // Create my user objects. | |
51 | ||
52 | fTracksOut = new TClonesArray("AliMCParticle"); | |
53 | fTracksOut->SetName(fTracksOutName); | |
54 | } | |
55 | ||
56 | //________________________________________________________________________ | |
57 | void AliEmcalMCTrackSelector::UserExec(Option_t *) | |
58 | { | |
59 | // Main loop, called for each event. | |
60 | ||
61 | AliMCEvent *mcevent = MCEvent(); | |
62 | AliVEvent *event = InputEvent(); | |
63 | ||
64 | if (!event) { | |
65 | AliError("Could not retrieve event! Returning"); | |
66 | return; | |
67 | } | |
68 | ||
69 | if (!mcevent) { | |
70 | AliError("Could not retrieve MC event! Returning"); | |
71 | return; | |
72 | } | |
73 | ||
74 | // add tracks to event if not yet there | |
75 | if (!(event->FindListObject(fTracksOutName))) { | |
76 | event->AddObject(fTracksOut); | |
77 | } | |
78 | ||
79 | // clear container (normally a null operation as the event should clean it already) | |
80 | fTracksOut->Clear(); | |
81 | ||
82 | // loop over tracks | |
83 | const Int_t Ntracks = mcevent->GetNumberOfTracks(); | |
84 | for (Int_t iTracks = 0, nacc = 0; iTracks < Ntracks; ++iTracks) { | |
85 | ||
86 | if (!mcevent->IsPhysicalPrimary(iTracks)) | |
87 | continue; | |
88 | ||
89 | AliMCParticle* track = dynamic_cast<AliMCParticle*>(mcevent->GetTrack(iTracks)); | |
90 | ||
91 | if (!track) | |
92 | continue; | |
93 | ||
94 | if (TMath::Abs(track->Eta()) > 1) | |
95 | continue; | |
96 | ||
97 | Int_t pdgCode = track->PdgCode(); | |
98 | if (fRejectNK && (pdgCode == 130 || pdgCode == 2112)) continue; | |
99 | ||
100 | if (fChargedMC && track->Charge() == 0) continue; | |
101 | ||
102 | new ((*fTracksOut)[nacc]) AliMCParticle(track->Particle(), 0, track->Label()); | |
103 | ++nacc; | |
104 | } | |
105 | } |