ITSv2 tracker interface changed
[u/mrichter/AliRoot.git] / HBTAN / AliHBTReaderITSv2.cxx
CommitLineData
1b446896 1
2#include "AliHBTReaderITSv2.h"
3
a9bfdd7b 4#include <iostream.h>
5#include <fstream.h>
6#include <TString.h>
7#include <TObjString.h>
8#include <TTree.h>
9#include <TFile.h>
10#include <TParticle.h>
11
12#include <AliRun.h>
13#include <AliMagF.h>
14#include <AliITStrackV2.h>
15//#include <AliITSParam.h>
16#include <AliITStrackerV2.h>
17#include <AliITSgeom.h>
18
19#include "AliHBTRun.h"
20#include "AliHBTEvent.h"
21#include "AliHBTParticle.h"
22#include "AliHBTParticleCut.h"
23
24
1b446896 25ClassImp(AliHBTReaderITSv2)
26
a9bfdd7b 27AliHBTReaderITSv2::
28 AliHBTReaderITSv2(const Char_t* trackfilename, const Char_t* clusterfilename,
29 const Char_t* galicefilename)
30 :fTrackFileName(trackfilename),fClusterFileName(clusterfilename),
31 fGAliceFileName(galicefilename)
32{
33 //constructor,
34 //Defaults:
35 // trackfilename = "AliITStracksV2.root"
36 // clusterfilename = "AliITSclustersV2.root"
37 // galicefilename = "galice.root"
38 fParticles = new AliHBTRun();
39 fTracks = new AliHBTRun();
40 fIsRead = kFALSE;
41}
42/********************************************************************/
43
44AliHBTReaderITSv2::
45 AliHBTReaderITSv2(TObjArray* dirs, const Char_t* trackfilename,
46 const Char_t* clusterfilename, const Char_t* galicefilename)
47 : AliHBTReader(dirs),
48 fTrackFileName(trackfilename),fClusterFileName(clusterfilename),
49 fGAliceFileName(galicefilename)
50{
51 //constructor,
52 //Defaults:
53 // trackfilename = "AliITStracksV2.root"
54 // clusterfilename = "AliITSclustersV2.root"
55 // galicefilename = "galice.root"
56
57 fParticles = new AliHBTRun();
58 fTracks = new AliHBTRun();
59 fIsRead = kFALSE;
60}
61/********************************************************************/
62
63AliHBTReaderITSv2::~AliHBTReaderITSv2()
64 {
65 if (fParticles) delete fParticles;
66 if (fTracks) delete fTracks;
67 }
68/********************************************************************/
69/********************************************************************/
70
71AliHBTEvent* AliHBTReaderITSv2::GetParticleEvent(Int_t n)
72 {
73 //returns Nth event with simulated particles
74 if (!fIsRead)
75 if(Read(fParticles,fTracks))
76 {
77 Error("GetParticleEvent","Error in reading");
78 return 0x0;
79 }
80
81 return fParticles->GetEvent(n);
82 }
83/********************************************************************/
84
85AliHBTEvent* AliHBTReaderITSv2::GetTrackEvent(Int_t n)
86 {
87 //returns Nth event with reconstructed tracks
88 if (!fIsRead)
89 if(Read(fParticles,fTracks))
90 {
91 Error("GetTrackEvent","Error in reading");
92 return 0x0;
93 }
94 return fTracks->GetEvent(n);
95 }
96/********************************************************************/
97
98Int_t AliHBTReaderITSv2::GetNumberOfPartEvents()
99 {
100 //returns number of events of particles
101 if (!fIsRead)
102 if(Read(fParticles,fTracks))
103 {
104 Error("GetNumberOfPartEvents","Error in reading");
105 return 0;
106 }
107 return fParticles->GetNumberOfEvents();
108 }
109
110/********************************************************************/
111Int_t AliHBTReaderITSv2::GetNumberOfTrackEvents()
112 {
113 //returns number of events of tracks
114 if (!fIsRead)
115 if(Read(fParticles,fTracks))
116 {
117 Error("GetNumberOfTrackEvents","Error in reading");
118 return 0;
119 }
120 return fTracks->GetNumberOfEvents();
121 }
122
123
124/********************************************************************/
125/********************************************************************/
126Int_t AliHBTReaderITSv2::Read(AliHBTRun* particles, AliHBTRun *tracks)
127{
128 Int_t Nevents = 0; //number of events found in given directory
129 Int_t Ndirs; //number of the directories to be read
130 Int_t Ntracks; //number of tracks in current event
131 Int_t currentdir = 0; //number of events in the current directory
132 Int_t totalNevents = 0; //total number of events read from all directories up to now
133 register Int_t i; //iterator
134
135 TFile *aTracksFile;//file with tracks
136 TFile *aClustersFile;//file with clusters
137 TFile *aGAliceFile;//file name with galice
138
41515b05 139// AliITStrackerV2 *tracker; // ITS tracker - used for cooking labels
a9bfdd7b 140 TTree *tracktree; // tree for tracks
141
142 Double_t xk;
143 Double_t par[5]; //Kalman track parameters
144 Float_t phi, lam, pt;//angles and transverse momentum
145 Int_t label; //label of the current track
146
147 char tname[100]; //buffer for tree name
148 AliITStrackV2 *iotrack= new AliITStrackV2(); //buffer track for reading data from tree
149
150 if (!particles) //check if an object is instatiated
151 {
152 Error("Read"," particles object must instatiated before passing it to the reader");
153 }
154 if (!tracks) //check if an object is instatiated
155 {
156 Error("Read"," tracks object must instatiated before passing it to the reader");
157 }
158 particles->Reset();//clear runs == delete all old events
159 tracks->Reset();
160
161 if (fDirs) //if array with directories is supplied by user
162 {
163 Ndirs = fDirs->GetEntries(); //get the number if directories
164 }
165 else
166 {
167 Ndirs = 0; //if the array is not supplied read only from current directory
168 }
169
170// cout<<"Found "<<Ndirs<<" directory entries"<<endl;
171
172 do //do while is good even if Ndirs==0 (than read from current directory)
173 {
174 if( (i=OpenFiles(aTracksFile,aClustersFile,aGAliceFile,currentdir)) )
175 {
176 Error("Read","Exiting due to problems with opening files. Errorcode %d",i);
177 delete iotrack;
178 return i;
179 }
180
181 if (gAlice->TreeE())//check if tree E exists
182 {
183 Nevents = (Int_t)gAlice->TreeE()->GetEntries();//if yes get number of events in gAlice
184 cout<<"________________________________________________________\n";
185 cout<<"Found "<<Nevents<<" event(s) in directory "<<GetDirName(currentdir)<<endl;
186 cout<<"Setting Magnetic Field. Factor is "<<gAlice->Field()->Factor()<<endl;
187 AliKalmanTrack::SetConvConst(100/0.299792458/0.2/gAlice->Field()->Factor());
188 }
189 else
190 {//if not return an error
191 Error("Read","Can not find Header tree (TreeE) in gAlice");
192 delete iotrack;
193 return 1;
194 }
195
196 AliITSgeom *geom=(AliITSgeom*)aClustersFile->Get("AliITSgeom");
197 if (!geom)
198 {
199 Error("Read","Can't get the ITS geometry!");
200 delete iotrack;
201 return 2;
202 }
203
204 for(Int_t currentEvent =0; currentEvent<Nevents;currentEvent++)//loop over all events
205 {
206 cout<<"Reading Event "<<currentEvent<<endl;
207
208 aGAliceFile->cd();
209 gAlice->GetEvent(currentEvent);
9f69cb10 210
211// TParticle * part = gAlice->Particle(0);
a9bfdd7b 212
213 aClustersFile->cd();
9f69cb10 214// Double_t orz=part->Vz();
41515b05 215// tracker = new AliITStrackerV2(geom,currentEvent,orz); //<---- this is for Massimo version
216// tracker = new AliITStrackerV2(geom,currentEvent);
a9bfdd7b 217 sprintf(tname,"TreeT_ITS_%d",currentEvent);
218
219 tracktree=(TTree*)aTracksFile->Get(tname);
220 if (!tracktree)
221 {
222 Error("Read","Can't get a tree with ITS tracks");
223 delete iotrack;
41515b05 224 // delete tracker;
a9bfdd7b 225 return 4;
226 }
227 TBranch *tbranch=tracktree->GetBranch("tracks");
228
229 Ntracks=(Int_t)tracktree->GetEntries();
230
231 Int_t accepted = 0;
232 Int_t tpcfault = 0;
233 Int_t itsfault = 0;
234 for (i=0; i<Ntracks; i++) //loop over all tpc tracks
235 {
9f69cb10 236 if(i%100 == 0)cout<<"all: "<<i<<" accepted: "<<accepted<<" tpc faults: "<<tpcfault<<"\r";
a9bfdd7b 237
238 tbranch->SetAddress(&iotrack);
239 tracktree->GetEvent(i);
240
241 label=iotrack->GetLabel();
242 if (label < 0)
243 {
244 tpcfault++;
245 continue;
246 }
a9bfdd7b 247
248 TParticle *p = (TParticle*)gAlice->Particle(label);
249 if(Pass(p->GetPdgCode())) continue; //check if we are intersted with particles of this type
250 //if not take next partilce
251
252 AliHBTParticle* part = new AliHBTParticle(*p);
253 if(Pass(part)) { delete part; continue;}//check if meets all criteria of any of our cuts
254 //if it does not delete it and take next good track
255
256
5f119c5b 257 iotrack->PropagateTo(3.,0.0028,65.19);
a9bfdd7b 258 iotrack->PropagateToVertex();
259
260 iotrack->GetExternalParameters(xk,par); //get properties of the track
261 phi=TMath::ASin(par[2]) + iotrack->GetAlpha();
262 if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
263 if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
264 lam=par[3];
265 pt=1.0/TMath::Abs(par[4]);
266
267 Double_t tpx = pt * TMath::Cos(phi); //track x coordinate of momentum
268 Double_t tpy = pt * TMath::Sin(phi); //track y coordinate of momentum
269 Double_t tpz = pt * lam; //track z coordinate of momentum
270
271 Double_t mass = p->GetMass();
272 Double_t tEtot = TMath::Sqrt( tpx*tpx + tpy*tpy + tpz*tpz + mass*mass);//total energy of the track
273
274 AliHBTParticle* track = new AliHBTParticle(p->GetPdgCode(), tpx, tpy , tpz, tEtot, 0., 0., 0., 0.);
275 if(Pass(track))//check if meets all criteria of any of our cuts
276 //if it does not delete it and take next good track
277 {
278 delete track;
279 delete part;
280 continue;
281 }
282 particles->AddParticle(totalNevents,part);//put track and particle on the run
283 tracks->AddParticle(totalNevents,track);
284 accepted++;
285 }//end of loop over tracks in the event
286
287 aTracksFile->Delete(tname);
288 aTracksFile->Delete("tracks");
41515b05 289// delete tracker;
a9bfdd7b 290
291 totalNevents++;
a9bfdd7b 292 cout<<"all: "<<i<<" accepted: "<<accepted<<" tpc faults: "<<tpcfault<<" its faults: "<<itsfault<<endl;
293
294 }//end of loop over events in current directory
7836ee94 295 CloseFiles(aTracksFile,aClustersFile,aGAliceFile);
296 currentdir++;
a9bfdd7b 297 }while(currentdir < Ndirs);//end of loop over directories specified in fDirs Obj Array
298
299 delete iotrack;
300 fIsRead = kTRUE;
301 return 0;
302}
303
304/********************************************************************/
305Int_t AliHBTReaderITSv2::OpenFiles
306(TFile*& aTracksFile, TFile*& aClustersFile, TFile*& agAliceFile,Int_t event)
307{
308 //opens all the files
309
310
311 const TString& dirname = GetDirName(event);
312 if (dirname == "")
313 {
314 Error("OpenFiles","Can not get directory name");
315 return 4;
316 }
317
318 TString filename = dirname +"/"+ fTrackFileName;
319 aTracksFile = TFile::Open(filename.Data());
320 if ( aTracksFile == 0x0 )
321 {
322 Error("OpenFiles","Can't open file with tacks named %s",filename.Data());
323 return 1;
324 }
325 if (!aTracksFile->IsOpen())
326 {
327 Error("OpenFiles","Can't open file with tacks named %s",filename.Data());
328 return 1;
329 }
330
331 filename = dirname +"/"+ fClusterFileName;
332 aClustersFile = TFile::Open(filename.Data());
333 if ( aClustersFile == 0x0 )
334 {
335 Error("OpenFiles","Can't open file with TPC clusters named %s",filename.Data());
336 return 2;
337 }
338 if (!aClustersFile->IsOpen())
339 {
340 Error("OpenFiles","Can't open file with TPC clusters named %s",filename.Data());
341 return 2;
342 }
343
344 filename = dirname +"/"+ fGAliceFileName;
345 agAliceFile = TFile::Open(filename.Data());
346 if ( agAliceFile== 0x0)
347 {
348 Error("OpenFiles","Can't open file with TPC clusters named %s",filename.Data());
349 return 3;
350 }
351 if (!agAliceFile->IsOpen())
352 {
353 Error("OpenFiles","Can't open file with TPC clusters named %s",filename.Data());
354 return 3;
355 }
356
357 if (!(gAlice=(AliRun*)agAliceFile->Get("gAlice")))
358 {
359 Error("OpenFiles","gAlice have not been found on %s !\n",filename.Data());
360 return 5;
361 }
362
363 return 0;
364}
365/********************************************************************/
366
367/********************************************************************/
368
369void AliHBTReaderITSv2::CloseFiles(TFile*& tracksFile, TFile*& clustersFile, TFile*& gAliceFile)
370{
371 //closes the files
372 tracksFile->Close();
373 delete tracksFile;
374 tracksFile = 0x0;
375
376 clustersFile->Close();
377 delete clustersFile;
378 clustersFile = 0x0;
379
380 delete gAlice;
381 gAlice = 0;
382
383 if (gAliceFile)
384 {
385 gAliceFile->Close();
386 delete gAliceFile;
387 gAliceFile = 0x0;
388 }
389}
390
391/********************************************************************/
392
393