New version of SPD raw-data reconstruction. The format now correponds to the actual...
[u/mrichter/AliRoot.git] / RAW / AliHoughFilter.cxx
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e10815f1 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/* $Id$ */
17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// high level filter algorithm for TPC using a hough transformation //
21// //
22///////////////////////////////////////////////////////////////////////////////
23
e10815f1 24#include <TStopwatch.h>
25
26#include "AliL3StandardIncludes.h"
27#include "AliL3Logging.h"
28#include "AliL3Transform.h"
29#include "AliL3Hough.h"
30#include "AliLog.h"
d6186083 31#include <AliL3ITSclusterer.h>
32#include <AliL3ITSVertexerZ.h>
33#include <AliL3ITStracker.h>
e10815f1 34
35#include "AliHoughFilter.h"
36
d6186083 37#include "AliRawReaderRoot.h"
38#include <AliMagF.h>
39#include <AliMagFMaps.h>
40#include <AliKalmanTrack.h>
41#include <AliITSgeom.h>
e10815f1 42
43ClassImp(AliHoughFilter)
44
45//_____________________________________________________________________________
f3c1e83c 46AliHoughFilter::AliHoughFilter():
47fPtmin(0),
48fITSgeom(NULL)
e10815f1 49{
50// default constructor
51
d6186083 52 // Init debug level
e10815f1 53 AliL3Log::fgLevel = AliL3Log::kError;
54 if (AliDebugLevel() > 0) AliL3Log::fgLevel = AliL3Log::kWarning;
55 if (AliDebugLevel() > 1) AliL3Log::fgLevel = AliL3Log::kInformational;
56 if (AliDebugLevel() > 2) AliL3Log::fgLevel = AliL3Log::kDebug;
d6186083 57
58 // Init TPC HLT geometry
59 const char *path = gSystem->Getenv("ALICE_ROOT");
60 Char_t pathname[1024];
61 strcpy(pathname,path);
62 strcat(pathname,"/HLT/src");
63 if (!AliL3Transform::Init(pathname, kFALSE))
e10815f1 64 AliError("HLT initialization failed!");
d6186083 65
66 // Init magnetic field
d6186083 67 AliMagF* field = new AliMagFMaps("Maps","Maps", 2, 1., 10., AliMagFMaps::k5kG);
c84a5e9e 68 AliTracker::SetFieldMap(field,kTRUE);
d6186083 69 fPtmin = 0.1*AliL3Transform::GetSolenoidField();
70
71 // Init ITS geometry
72 fITSgeom = new AliITSgeom();
73 fITSgeom->ReadNewFile("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymmFMD.det");
74 if (!fITSgeom)
75 AliError("ITS geometry not found!");
76
c27411e7 77 // Init PID
78 AliPID pid;
e10815f1 79}
80
81//_____________________________________________________________________________
82Bool_t AliHoughFilter::Filter(AliRawEvent* event, AliESD* esd)
83{
d6186083 84 // Run fast online reconstruction
85 // based on the HLT tracking algorithms
86
87 TStopwatch globaltimer;
88 globaltimer.Start();
89
d6186083 90 TStopwatch timer;
91 timer.Start();
92
93 TTree *treeITSclusters = new TTree("TreeL3ITSclusters"," "); //make a tree
79eedd0f 94 treeITSclusters->SetDirectory(0);
95
d6186083 96 RunITSclusterer(event,treeITSclusters);
97 RunITSvertexer(esd,treeITSclusters);
98 RunTPCtracking(event,esd);
99 RunITStracking(esd,treeITSclusters);
100 delete treeITSclusters;
101
d6186083 102 AliInfo(Form("Event filter has finished in %f seconds\n\n\n\n\n\n",globaltimer.RealTime()));
103
104 return kTRUE;
105}
106
107//_____________________________________________________________________________
108void AliHoughFilter::RunITSclusterer(AliRawEvent* event, TTree *treeClusters)
109{
110 // Run ITS Clusterer
111 // The clusters are stored in a tree
112
113 TStopwatch timer;
114 timer.Start();
115
116 if(!fITSgeom)
117 AliError("ITS geometry not created!");
118 AliL3ITSclusterer clusterer(fITSgeom);
119 AliRawReader *itsrawreader=new AliRawReaderRoot(event);
120 clusterer.Digits2Clusters(itsrawreader,treeClusters);
121 delete itsrawreader;
122 AliInfo(Form("ITS clusterer has finished in %f seconds\n",timer.RealTime()));
123
124}
125
126
127//_____________________________________________________________________________
128void AliHoughFilter::RunITSvertexer(AliESD* esd, TTree *treeClusters)
129{
130 // Run SPD vertexerZ
131 // Store the result in the ESD
132
133 TStopwatch timer;
134 timer.Start();
e10815f1 135
d6186083 136 AliL3ITSVertexerZ vertexer;
137 AliESDVertex *vertex = vertexer.FindVertexForCurrentEvent(fITSgeom,treeClusters);
138 esd->SetVertex(vertex);
139 AliInfo(Form("ITS vertexer has finished in %f seconds\n",timer.RealTime()));
140
141}
142
143//_____________________________________________________________________________
144void AliHoughFilter::RunTPCtracking(AliRawEvent* event, AliESD* esd)
145{
146 // Run hough transform tracking in TPC
147 // The z of the vertex is taken from the ESD
148 // The result of the tracking is stored in the ESD
e10815f1 149 TStopwatch timer;
150 timer.Start();
151
d6186083 152 const AliESDVertex *vertex = esd->GetVertex();
153 Float_t zvertex = vertex->GetZv();
e10815f1 154
155 AliL3Hough *hough1 = new AliL3Hough();
156
157 hough1->SetThreshold(4);
d6186083 158 hough1->CalcTransformerParams(fPtmin);
e10815f1 159 hough1->SetPeakThreshold(70,-1);
d6186083 160 hough1->Init(100,4,event,zvertex);
e10815f1 161 hough1->SetAddHistograms();
162
163 AliL3Hough *hough2 = new AliL3Hough();
d6186083 164
e10815f1 165 hough2->SetThreshold(4);
d6186083 166 hough2->CalcTransformerParams(fPtmin);
e10815f1 167 hough2->SetPeakThreshold(70,-1);
d6186083 168 hough2->Init(100,4,event,zvertex);
e10815f1 169 hough2->SetAddHistograms();
170
171 Int_t nglobaltracks = 0;
172 /* In case we run HLT code in 2 threads */
173 hough1->StartProcessInThread(0,17);
174 hough2->StartProcessInThread(18,35);
175
176 if(hough1->WaitForThreadFinish())
d6186083 177 ::Fatal("AliL3Hough::WaitForThreadFinish"," Can not join the required thread! ");
e10815f1 178 if(hough2->WaitForThreadFinish())
d6186083 179 ::Fatal("AliL3Hough::WaitForThreadFinish"," Can not join the required thread! ");
180
181 /* In case we run HLT code in the main thread
182 for(Int_t slice=0; slice<=17; slice++)
183 {
184 hough1->ReadData(slice,0);
185 hough1->Transform();
186 hough1->AddAllHistogramsRows();
187 hough1->FindTrackCandidatesRow();
188 hough1->AddTracks();
189 }
190 for(Int_t slice=18; slice<=35; slice++)
191 {
192 hough2->ReadData(slice,0);
193 hough2->Transform();
194 hough2->AddAllHistogramsRows();
195 hough2->FindTrackCandidatesRow();
196 hough2->AddTracks();
197 }
198 */
e10815f1 199
200 nglobaltracks += hough1->FillESD(esd);
201 nglobaltracks += hough2->FillESD(esd);
202
d6186083 203 /* In case we want to debug the ESD
204 gSystem->MakeDirectory("hough1");
205 hough1->WriteTracks("./hough1");
206 gSystem->MakeDirectory("hough2");
207 hough2->WriteTracks("./hough2");
208 */
e10815f1 209
210 delete hough1;
211 delete hough2;
212
d6186083 213 AliInfo(Form("\nHough Transformer has found %d TPC tracks in %f seconds\n\n", nglobaltracks,timer.RealTime()));
214
215}
216
217//_____________________________________________________________________________
218void AliHoughFilter::RunITStracking(AliESD* esd, TTree *treeClusters)
219{
220 // Run the ITS tracker
221 // The tracks from the HT TPC tracking are used as seeds
222 // The prologated tracks are updated in the ESD
223 TStopwatch timer;
224 timer.Start();
225
226 Double_t vtxPos[3];
227 Double_t vtxErr[3]={0.005,0.005,0.010};
228 const AliESDVertex *vertex = esd->GetVertex();
229 vertex->GetXYZ(vtxPos);
230
231 AliL3ITStracker itsTracker(fITSgeom);
232 itsTracker.SetVertex(vtxPos,vtxErr);
233
234 itsTracker.LoadClusters(treeClusters);
235 itsTracker.Clusters2Tracks(esd);
236 itsTracker.UnloadClusters();
237 AliInfo(Form("ITS tracker has finished in %f seconds\n",timer.RealTime()));
e10815f1 238
e10815f1 239}