1 #include "AliAODParticle.h"
2 //___________________________________________________________
3 /////////////////////////////////////////////////////////////
5 // class AliAODParticle
7 // Ali HBT Particle: simplified class TParticle
8 // Simplified in order to minimize the size of object
9 // - we want to keep a lot of such a objects in memory
10 // Additionaly adjusted for HBT Analysies purposes
11 // + pointer to Track Points
12 // + pointer to Cluster Map(s)
14 // Piotr.Skowronski@cern.ch
16 /////////////////////////////////////////////////////////////
17 #include <TParticle.h>
18 #include "AliTrackPoints.h"
19 #include "AliClusterMap.h"
21 ClassImp(AliAODParticle)
23 //______________________________________________________________________________
24 AliAODParticle::AliAODParticle():
25 fPdgIdx(0), fIdxInEvent(0),fNPids(0),fPids(0x0),fPidProb(0x0),
26 fCalcMass(0),fPx(0), fPy(0),fPz(0),fE(0), fVx(0), fVy(0),fVz(0),fVt(0),
27 fTPCTrackPoints(0x0),fITSTrackPoints(0x0),fClusterMap(0x0)
30 //______________________________________________________________________________
32 AliAODParticle::AliAODParticle(Int_t pdg, Int_t idx,
33 Double_t px, Double_t py, Double_t pz, Double_t etot,
34 Double_t vx, Double_t vy, Double_t vz, Double_t time):
35 fPdgIdx(0), fIdxInEvent(idx),fNPids(0),fPids(0x0),fPidProb(0x0),
37 fPx(px), fPy(py),fPz(pz),fE(etot),
38 fVx(vx), fVy(vy),fVz(vz),fVt(time),
39 fTPCTrackPoints(0x0),fITSTrackPoints(0x0),fClusterMap(0x0)
44 fCalcMass = GetPDG()->Mass();
46 Double_t a2 = fE*fE -fPx*fPx -fPy*fPy -fPz*fPz;
47 if (a2 >= 0) fCalcMass = TMath::Sqrt(a2);
48 else fCalcMass = -TMath::Sqrt(-a2);
51 //______________________________________________________________________________
53 AliAODParticle::AliAODParticle(Int_t pdg, Float_t prob, Int_t idx,
54 Double_t px, Double_t py, Double_t pz, Double_t etot,
55 Double_t vx, Double_t vy, Double_t vz, Double_t time):
56 fPdgIdx(0), fIdxInEvent(idx),fNPids(0),fPids(0x0),fPidProb(0x0),
58 fPx(px), fPy(py),fPz(pz),fE(etot),
59 fVx(vx), fVy(vy),fVz(vz),fVt(time),
60 fTPCTrackPoints(0x0),fITSTrackPoints(0x0),fClusterMap(0x0)
65 fCalcMass = GetPDG()->Mass();
67 Double_t a2 = fE*fE -fPx*fPx -fPy*fPy -fPz*fPz;
68 if (a2 >= 0) fCalcMass = TMath::Sqrt(a2);
69 else fCalcMass = -TMath::Sqrt(-a2);
72 //______________________________________________________________________________
74 AliAODParticle::AliAODParticle(const AliAODParticle& in):
76 fPdgIdx(in.fPdgIdx), fIdxInEvent(in.fIdxInEvent),
77 fNPids(in.fNPids),fPids(new Int_t[fNPids]),fPidProb(new Float_t[fNPids]),
78 fCalcMass(in.GetCalcMass()),
79 fPx(in.Px()),fPy(in.Py()),fPz(in.Pz()),fE(in.Energy()),
80 fVx(in.Vx()),fVy(in.Vy()),fVz(in.Vz()),fVt(in.T()),
81 fTPCTrackPoints(0x0),fITSTrackPoints(0x0),fClusterMap(0x0)
84 for(Int_t i = 0; i<fNPids; i++)
86 fPids[i] = in.fPids[i];
87 fPidProb[i] = in.fPidProb[i];
90 if (in.fTPCTrackPoints)
91 fTPCTrackPoints = (AliTrackPoints*)in.fTPCTrackPoints->Clone();
92 if (in.fITSTrackPoints)
93 fITSTrackPoints = (AliTrackPoints*)in.fITSTrackPoints->Clone();
95 fClusterMap = (AliClusterMap*)in.fClusterMap->Clone();
97 //______________________________________________________________________________
99 AliAODParticle::AliAODParticle(const AliVAODParticle& in):
101 fPdgIdx(0), fIdxInEvent(in.GetUID()),
102 fNPids(0),fPids(0x0),fPidProb(0x0),
104 fPx(in.Px()),fPy(in.Py()),fPz(in.Pz()),fE(in.E()),
105 fVx(in.Vx()),fVy(in.Vy()),fVz(in.Vz()),fVt(in.T()),
106 fTPCTrackPoints(0x0),fITSTrackPoints(0x0),fClusterMap(0x0)
110 for(Int_t i = 0; i<in.GetNumberOfPids(); i++)
112 SetPIDprobability(in.GetNthPid(i),in.GetNthPidProb(i));
114 SetPdgCode(in.GetPdgCode(),in.GetPidProb());
116 AliTrackPoints* tpts = in.GetTPCTrackPoints();
117 if (tpts) SetTPCTrackPoints((AliTrackPoints*)tpts->Clone());
119 tpts = in.GetITSTrackPoints();
120 if (tpts) SetITSTrackPoints((AliTrackPoints*)tpts->Clone());
122 AliClusterMap* clmap = in.GetClusterMap();
123 if (clmap) SetClusterMap((AliClusterMap*)clmap->Clone());
125 //______________________________________________________________________________
127 AliAODParticle::AliAODParticle(const TParticle &p,Int_t idx):
128 fPdgIdx(0), fIdxInEvent(idx),
129 fNPids(0),fPids(0x0),fPidProb(0x0),
130 fCalcMass(p.GetCalcMass()),
131 fPx(p.Px()),fPy(p.Py()),fPz(p.Pz()),fE(p.Energy()),
132 fVx(p.Vx()),fVy(p.Vy()),fVz(p.Vz()),fVt(p.T()),
133 fTPCTrackPoints(0x0),fITSTrackPoints(0x0),fClusterMap(0x0)
135 //all copied in the initialization
136 SetPdgCode(p.GetPdgCode());
138 //______________________________________________________________________________
140 AliAODParticle::~AliAODParticle()
145 delete fTPCTrackPoints;
146 delete fITSTrackPoints;
149 //______________________________________________________________________________
151 AliAODParticle& AliAODParticle::operator=(const AliAODParticle& in)
158 Int_t* fPids = new Int_t[fNPids];
159 Float_t* fPidProb = new Float_t[fNPids];
160 for (Int_t i = 0; i < fNPids;i++)
162 fPids[i] = in.fPids[i];
163 fPidProb[i] = in.fPidProb[i];
166 fPdgIdx = in.fPdgIdx;
167 fIdxInEvent = in.fIdxInEvent;
168 fCalcMass = in.GetCalcMass();
178 delete fTPCTrackPoints;
179 fTPCTrackPoints = (in.fTPCTrackPoints)?(AliTrackPoints*)fTPCTrackPoints->Clone():0x0;
181 delete fITSTrackPoints;
182 fITSTrackPoints = (in.fITSTrackPoints)?(AliTrackPoints*)fITSTrackPoints->Clone():0x0;
185 fClusterMap = (in.fClusterMap)?(AliClusterMap*)in.fClusterMap->Clone():0x0;
189 //______________________________________________________________________________
191 void AliAODParticle::SetPdgCode(Int_t pdg,Float_t prob)
193 SetPIDprobability(pdg,prob);
194 fPdgIdx = GetPidSlot(pdg);
197 //______________________________________________________________________________
198 void AliAODParticle::SetPIDprobability(Int_t pdg, Float_t prob)
200 //Sets another pdg code and corresponding probabilty
201 //Ids are set in decreasing order
202 //Check if total prbaility is not ivercoming unity is performed
203 //in case, warning is printed
204 if (GetDebug() > 9) Info("SetPIDprobability","Setting PID %d prob %f",pdg,prob);
206 Float_t totprob = 0.0;//sums up probabilities
207 Int_t idx = GetPidSlot(pdg);
211 fPidProb[idx] = prob;
212 for (i = 0; i < fNPids;i++) totprob+=fPidProb[i];
213 if (totprob > (1.0+0.000001))
215 Warning("SetPIDprobability","Total probability greater than unity (%f)",totprob);
219 Info("SetPIDprobability","Current Total probability: %f",totprob);
224 Int_t currentpid = GetPdgCode();
226 Float_t* aPidProbNew = new Float_t[fNPids];
227 Int_t* aPidsNew = new Int_t[fNPids];
229 for (i = 0; i < fNPids-1;i++)//find a slot
231 if ( fPidProb[i] > prob)
233 if (GetDebug()>9) Info("SetPID","Copying entry %d",i);
234 aPidProbNew[i] = fPidProb[i];
235 aPidsNew[i] = fPids[i];
236 totprob+=fPidProb[i];
241 if (GetDebug() > 9) Info("SetPID","Setting new PID on entry %d",i);
242 aPidProbNew[i] = prob;
247 for (Int_t j = fNPids-1; j > i ;j--)//copy rest of old araays
249 if (GetDebug() > 9) Info("SetPID","Copying from old entry %d to new entry %d",j-1,j);
250 aPidProbNew[j] = fPidProb[j-1];
251 aPidsNew[j] = fPids[j-1];
252 totprob+=fPidProb[j-1];
258 fPidProb = aPidProbNew;
261 fPdgIdx = GetPidSlot(currentpid);
262 if (fPdgIdx == -1) fPdgIdx = 0;
264 if (totprob > (1.0+0.000001))//space for numerical error
266 Warning("SetId","Total probability is greater than unity (%f)!!!",totprob);
270 //______________________________________________________________________________
272 Float_t AliAODParticle::GetPIDprobability(Int_t pdg) const
274 //Returns probability that this particle is the type of pdg
275 Int_t idx = GetPidSlot(pdg);
276 if (idx < 0) return 0.0;//such pid was not specified for this particle
277 return fPidProb[idx];
279 //______________________________________________________________________________
281 const Char_t* AliAODParticle::GetName() const
283 //returns name of this particle
284 static char def[4] = "XXX";
285 const TParticlePDG *ap = TDatabasePDG::Instance()->GetParticle(GetPdgCode());
286 if (ap) return ap->GetName();
289 //______________________________________________________________________________
291 Int_t AliAODParticle::GetPidSlot(Int_t pdg) const
293 //returns position of the given PID in fPids (and fPidProb) array.
294 if (fPids == 0x0) return -1;
295 for (Int_t i = 0; i< fNPids; i++)
297 if (fPids[i] == pdg) return i;
301 //______________________________________________________________________________
303 Int_t AliAODParticle::GetNthPid(Int_t idx) const
305 //returns PID sitting on slot idx in fPids
306 if ( (idx < 0) || (idx >= fNPids) )
308 Error("GetNthPid","Out Of Bounds");
313 //______________________________________________________________________________
315 Float_t AliAODParticle::GetNthPidProb(Int_t idx) const
317 //returns PID sitting on slot idx in fPidProb
318 if ( (idx < 0) || (idx >= fNPids) )
320 Error("GetNthPid","Out Of Bounds");
323 return fPidProb[idx];
325 //______________________________________________________________________________
327 void AliAODParticle::Print() const
329 //prints information about particle
330 printf("____________________________________________________\n");
331 printf("Idx: %d PID: %d Name: ",fIdxInEvent,GetPdgCode());
332 TParticlePDG *pdgp = TDatabasePDG::Instance()->GetParticle(GetPdgCode());
335 printf("%s Mass: %f\n",pdgp->GetName(),pdgp->Mass());
339 printf("Not known\n");
342 printf("Px: %+f Py: %+f Pz: %+f E: %+f Calculated Mass: %f\nVx: %+f Vy: %+f Vz: %+f T: %+f\n",
343 Px(),Py(),Pz(),Energy(),GetCalcMass(),Vx(),Vy(),Vz(),T());
345 for (Int_t i = 0; i < fNPids; i++)
347 printf("# %d PID: %d Probability %f name ",i,fPids[i],fPidProb[i]);
348 const TParticlePDG *ap = TDatabasePDG::Instance()->GetParticle(fPids[i]);
351 printf("%s Mass %f\n",ap->GetName(),ap->Mass());
355 printf("Not known\n");
360 //______________________________________________________________________________
362 //void AliAODParticle::Streamer(TBuffer &b)
364 // // Stream all objects in the array to or from the I/O buffer.
365 // UInt_t R__s, R__c;
367 // if (b.IsReading())
370 // delete [] fPidProb;
372 // Version_t v = b.ReadVersion(&R__s, &R__c);
375 // AliAODParticle::Class()->ReadBuffer(b, this);
379 // TObject::Streamer(b);
384 // Int_t* fPids = new Int_t[fNPids];
385 // Float_t* fPidProb = new Float_t[fNPids];
386 // for (i = 0;i<fNPids;i++)
390 // for (i = 0;i<fNPids;i++)
405 // Info("Streamer","Read data");
409 // b.CheckByteCount(R__s, R__c,AliAODParticle::IsA());
413 // R__c = b.WriteVersion(AliAODParticle::IsA(), kTRUE);
414 // TObject::Streamer(b);
415 // Info("Streamer","Read data");
421 // for (i = 0;i<fNPids;i++)
427 // for (i = 0;i<fNPids;i++)
443 // b.SetByteCount(R__c, kTRUE);