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f644512a | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | //------------------------------------------------------------------------- | |
17 | // Implementation of the HLT TPC hough transform tracker class | |
18 | // | |
19 | // It reads directly TPC digits using runloader and runs the HT | |
20 | // algorithm over them. | |
21 | // It stores the reconstructed hough tracks in the HLT ESD using the | |
22 | // the off-line AliESDtrack format. | |
23 | // | |
24 | // Origin: Cvetan Cheshkov, CERN, Cvetan.Cheshkov@cern.ch | |
25 | //------------------------------------------------------------------------- | |
26 | ||
27 | #include "AliESD.h" | |
28 | #include "AliRunLoader.h" | |
29 | #include "AliL3TPCtracker.h" | |
30 | #include "AliL3Hough.h" | |
31 | ||
32 | ClassImp(AliL3TPCtracker) | |
33 | ||
34 | AliL3TPCtracker::AliL3TPCtracker(AliRunLoader *runLoader):AliTracker() | |
35 | { | |
36 | //-------------------------------------------------------------- | |
37 | // Constructor | |
38 | //-------------------------------------------------------------- | |
39 | ||
40 | if(AliL3Transform::GetVersion() == AliL3Transform::kVdefault) { | |
41 | Bool_t isinit=AliL3Transform::Init(runLoader); | |
42 | if(!isinit) AliWarning("Could not init AliL3Transform settings, using defaults!"); | |
43 | } | |
44 | ||
45 | fRunLoader = runLoader; | |
46 | } | |
47 | ||
48 | Int_t AliL3TPCtracker::Clusters2Tracks(AliESD *event) | |
49 | { | |
50 | //-------------------------------------------------------------------- | |
51 | // This method reconstructs HLT TPC Hough tracks | |
52 | //-------------------------------------------------------------------- | |
53 | ||
54 | if (!fRunLoader) { | |
55 | AliError("Missing runloader!"); | |
56 | return kTRUE; | |
57 | } | |
58 | ||
59 | Float_t ptmin = 0.1*AliL3Transform::GetSolenoidField(); | |
60 | ||
61 | Float_t zvertex = GetZ(); | |
62 | ||
63 | AliInfo(Form("Hough Transform will run with ptmin=%f and zvertex=%f",ptmin,zvertex)); | |
64 | ||
65 | AliL3Hough *hough = new AliL3Hough(); | |
66 | ||
67 | hough->SetThreshold(4); | |
68 | hough->CalcTransformerParams(ptmin); | |
69 | hough->SetPeakThreshold(70,-1); | |
70 | hough->SetRunLoader(fRunLoader); | |
71 | hough->Init("./", kFALSE, 100, kFALSE,4,0,0,zvertex); | |
72 | hough->SetAddHistograms(); | |
73 | ||
74 | for(Int_t slice=0; slice<=35; slice++) | |
75 | { | |
76 | hough->ReadData(slice); | |
77 | hough->Transform(); | |
78 | hough->AddAllHistogramsRows(); | |
79 | hough->FindTrackCandidatesRow(); | |
80 | hough->AddTracks(); | |
81 | } | |
82 | ||
83 | Int_t ntrk = hough->FillESD(event); | |
84 | ||
85 | Info("Clusters2Tracks","Number of found tracks: %d\n",ntrk); | |
86 | ||
87 | delete hough; | |
88 | ||
89 | return 0; | |
90 | } |