]>
Commit | Line | Data |
---|---|---|
1b446896 | 1 | #include "AliHBTParticle.h" |
f5de2f09 | 2 | //___________________________________________________________ |
3 | ///////////////////////////////////////////////////////////// | |
4 | // | |
5 | // class AliHBTParticle | |
6 | // | |
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 | // | |
12 | ///////////////////////////////////////////////////////////// | |
1b446896 | 13 | #include <TParticle.h> |
ff3d1148 | 14 | #include <TClass.h> |
f5de2f09 | 15 | #include "AliHBTTrackPoints.h" |
1b446896 | 16 | |
17 | ClassImp(AliHBTParticle) | |
18 | ||
8089a083 | 19 | Int_t AliHBTParticle::fgDebug = 0; |
1b446896 | 20 | //______________________________________________________________________________ |
21 | AliHBTParticle::AliHBTParticle(): | |
8089a083 | 22 | fPdgIdx(0), fIdxInEvent(0),fNPids(0),fPids(0x0),fPidProb(0x0), |
f5de2f09 | 23 | fCalcMass(0),fPx(0), fPy(0),fPz(0),fE(0), fVx(0), fVy(0),fVz(0),fVt(0), |
24 | fTrackPoints(0x0) | |
1b446896 | 25 | {//empty particle |
26 | } | |
8089a083 | 27 | //______________________________________________________________________________ |
1b446896 | 28 | |
8089a083 | 29 | AliHBTParticle::AliHBTParticle(Int_t pdg, Int_t idx, |
30 | Double_t px, Double_t py, Double_t pz, Double_t etot, | |
31 | Double_t vx, Double_t vy, Double_t vz, Double_t time): | |
e665964c | 32 | fPdgIdx(0), fIdxInEvent(idx),fNPids(0),fPids(0x0),fPidProb(0x0), |
8089a083 | 33 | fCalcMass(0), |
34 | fPx(px), fPy(py),fPz(pz),fE(etot), | |
f5de2f09 | 35 | fVx(vx), fVy(vy),fVz(vz),fVt(time), |
36 | fTrackPoints(0x0) | |
8089a083 | 37 | { |
38 | //mormal constructor | |
39 | SetPdgCode(pdg); | |
40 | if (GetPDG()) { | |
41 | fCalcMass = GetPDG()->Mass(); | |
42 | } else { | |
43 | Double_t a2 = fE*fE -fPx*fPx -fPy*fPy -fPz*fPz; | |
44 | if (a2 >= 0) fCalcMass = TMath::Sqrt(a2); | |
45 | else fCalcMass = -TMath::Sqrt(-a2); | |
46 | } | |
47 | } | |
1b446896 | 48 | //______________________________________________________________________________ |
8089a083 | 49 | |
50 | AliHBTParticle::AliHBTParticle(Int_t pdg, Float_t prob, Int_t idx, | |
51 | Double_t px, Double_t py, Double_t pz, Double_t etot, | |
52 | Double_t vx, Double_t vy, Double_t vz, Double_t time): | |
e665964c | 53 | fPdgIdx(0), fIdxInEvent(idx),fNPids(0),fPids(0x0),fPidProb(0x0), |
8089a083 | 54 | fCalcMass(0), |
35d14c47 | 55 | fPx(px), fPy(py),fPz(pz),fE(etot), |
f5de2f09 | 56 | fVx(vx), fVy(vy),fVz(vz),fVt(time), |
57 | fTrackPoints(0x0) | |
1b446896 | 58 | { |
59 | //mormal constructor | |
8089a083 | 60 | SetPdgCode(pdg,prob); |
1b446896 | 61 | if (GetPDG()) { |
62 | fCalcMass = GetPDG()->Mass(); | |
63 | } else { | |
64 | Double_t a2 = fE*fE -fPx*fPx -fPy*fPy -fPz*fPz; | |
65 | if (a2 >= 0) fCalcMass = TMath::Sqrt(a2); | |
66 | else fCalcMass = -TMath::Sqrt(-a2); | |
67 | } | |
68 | } | |
8089a083 | 69 | //______________________________________________________________________________ |
70 | AliHBTParticle::AliHBTParticle(const AliHBTParticle& in): | |
bed069a4 | 71 | TObject(in), |
8089a083 | 72 | fPdgIdx(in.fPdgIdx), fIdxInEvent(in.fIdxInEvent), |
73 | fNPids(in.fNPids),fPids(new Int_t[fNPids]),fPidProb(new Float_t[fNPids]), | |
74 | fCalcMass(in.GetCalcMass()), | |
75 | fPx(in.Px()),fPy(in.Py()),fPz(in.Pz()),fE(in.Energy()), | |
9616170a | 76 | fVx(in.Vx()),fVy(in.Vy()),fVz(in.Vz()),fVt(in.T()), |
77 | fTrackPoints(0x0) | |
8089a083 | 78 | { |
79 | //Copy constructor | |
80 | for(Int_t i = 0; i<fNPids; i++) | |
81 | { | |
82 | fPids[i] = in.fPids[i]; | |
83 | fPidProb[i] = in.fPidProb[i]; | |
84 | } | |
9616170a | 85 | |
86 | //fTrackPoints = (in.fTrackPoints)?(AliHBTTrackPoints*)in.fTrackPoints->Clone():0x0; | |
f5de2f09 | 87 | |
9616170a | 88 | if (in.fTrackPoints) |
89 | fTrackPoints = (AliHBTTrackPoints*)in.fTrackPoints->Clone(); | |
90 | ||
f5de2f09 | 91 | |
8089a083 | 92 | } |
1b446896 | 93 | |
94 | //______________________________________________________________________________ | |
8089a083 | 95 | AliHBTParticle::AliHBTParticle(const TParticle &p,Int_t idx): |
96 | fPdgIdx(0), fIdxInEvent(idx), | |
97 | fNPids(0),fPids(0x0),fPidProb(0x0), | |
98 | fCalcMass(p.GetCalcMass()), | |
1b446896 | 99 | fPx(p.Px()),fPy(p.Py()),fPz(p.Pz()),fE(p.Energy()), |
f5de2f09 | 100 | fVx(p.Vx()),fVy(p.Vy()),fVz(p.Vz()),fVt(p.T()), |
101 | fTrackPoints(0x0) | |
1b446896 | 102 | { |
103 | //all copied in the initialization | |
8089a083 | 104 | SetPdgCode(p.GetPdgCode()); |
105 | } | |
106 | //______________________________________________________________________________ | |
107 | ||
bed069a4 | 108 | AliHBTParticle::~AliHBTParticle() |
109 | { | |
110 | //dtor | |
111 | delete [] fPids; | |
112 | delete [] fPidProb; | |
f5de2f09 | 113 | delete fTrackPoints; |
bed069a4 | 114 | } |
115 | //______________________________________________________________________________ | |
116 | ||
117 | AliHBTParticle& AliHBTParticle::operator=(const AliHBTParticle& in) | |
118 | { | |
119 | //assigment operator | |
120 | ||
121 | fNPids = in.fNPids; | |
122 | delete [] fPids; | |
123 | delete [] fPidProb; | |
124 | Int_t* fPids = new Int_t[fNPids]; | |
125 | Float_t* fPidProb = new Float_t[fNPids]; | |
126 | for (Int_t i = 0; i < fNPids;i++) | |
127 | { | |
128 | fPids[i] = in.fPids[i]; | |
129 | fPidProb[i] = in.fPidProb[i]; | |
130 | } | |
131 | ||
132 | fPdgIdx = in.fPdgIdx; | |
133 | fIdxInEvent = in.fIdxInEvent; | |
134 | fCalcMass = in.GetCalcMass(); | |
135 | fPx = in.Px(); | |
136 | fPy = in.Py(); | |
137 | fPz = in.Pz(); | |
138 | fE = in.Energy(); | |
139 | fVx = in.Vx(); | |
140 | fVy = in.Vy(); | |
141 | fVz = in.Vz(); | |
142 | fVt = in.T(); | |
143 | ||
f5de2f09 | 144 | delete fTrackPoints; |
145 | fTrackPoints = (in.fTrackPoints)?(AliHBTTrackPoints*)fTrackPoints->Clone():0x0; | |
146 | ||
bed069a4 | 147 | return *this; |
148 | } | |
149 | //______________________________________________________________________________ | |
150 | ||
8089a083 | 151 | void AliHBTParticle::SetPdgCode(Int_t pdg,Float_t prob) |
152 | { | |
153 | SetPIDprobability(pdg,prob); | |
154 | fPdgIdx = GetPidSlot(pdg); | |
1b446896 | 155 | } |
156 | ||
157 | //______________________________________________________________________________ | |
8089a083 | 158 | void AliHBTParticle::SetPIDprobability(Int_t pdg, Float_t prob) |
159 | { | |
160 | //Sets another pdg code and corresponding probabilty | |
161 | //Ids are set in decreasing order | |
162 | //Check if total prbaility is not ivercoming unity is performed | |
163 | //in case, warning is printed | |
e665964c | 164 | if (fgDebug > 9) Info("SetPIDprobability","Setting PID %d prob %f",pdg,prob); |
8089a083 | 165 | |
166 | Float_t totprob = 0.0;//sums up probabilities | |
167 | Int_t idx = GetPidSlot(pdg); | |
168 | Int_t i; | |
169 | if (idx > -1) | |
170 | { | |
171 | fPidProb[idx] = prob; | |
172 | for (i = 0; i < fNPids;i++) totprob+=fPidProb[i]; | |
e665964c | 173 | if (totprob > (1.0+0.000001)) |
8089a083 | 174 | { |
e665964c | 175 | Warning("SetPIDprobability","Total probability greater than unity (%f)",totprob); |
8089a083 | 176 | } |
e665964c | 177 | if (fgDebug > 9) |
8089a083 | 178 | { |
179 | Info("SetPIDprobability","Current Total probability: %f",totprob); | |
180 | } | |
181 | return; | |
182 | } | |
183 | ||
184 | Int_t currentpid = GetPdgCode(); | |
185 | fNPids++; | |
186 | Float_t* aPidProbNew = new Float_t[fNPids]; | |
187 | Int_t* aPidsNew = new Int_t[fNPids]; | |
188 | ||
189 | for (i = 0; i < fNPids-1;i++)//find a slot | |
190 | { | |
191 | if ( fPidProb[i] > prob) | |
192 | { | |
e665964c | 193 | if (fgDebug>9) Info("SetPID","Copying entry %d",i); |
8089a083 | 194 | aPidProbNew[i] = fPidProb[i]; |
195 | aPidsNew[i] = fPids[i]; | |
196 | totprob+=fPidProb[i]; | |
197 | } | |
198 | else break; | |
199 | } | |
200 | ||
e665964c | 201 | if (fgDebug > 9) Info("SetPID","Setting new PID on entry %d",i); |
8089a083 | 202 | aPidProbNew[i] = prob; |
203 | aPidsNew[i] = pdg; | |
204 | totprob+=prob; | |
205 | ||
206 | ||
e665964c | 207 | for (Int_t j = fNPids-1; j > i ;j--)//copy rest of old araays |
8089a083 | 208 | { |
e665964c | 209 | if (fgDebug > 9) Info("SetPID","Copying from old entry %d to new entry %d",j-1,j); |
8089a083 | 210 | aPidProbNew[j] = fPidProb[j-1]; |
211 | aPidsNew[j] = fPids[j-1]; | |
212 | totprob+=fPidProb[j-1]; | |
213 | } | |
214 | ||
8089a083 | 215 | delete [] fPidProb; |
216 | delete [] fPids; | |
217 | ||
218 | fPidProb = aPidProbNew; | |
219 | fPids = aPidsNew; | |
220 | ||
221 | fPdgIdx = GetPidSlot(currentpid); | |
222 | if (fPdgIdx == -1) fPdgIdx = 0; | |
e665964c | 223 | |
224 | if (totprob > (1.0+0.000001))//place for numerical error | |
225 | { | |
226 | Warning("SetId","Total probability is greater than unity (%f)!!!",totprob); | |
227 | Print(); | |
228 | } | |
8089a083 | 229 | } |
230 | //______________________________________________________________________________ | |
231 | ||
232 | Float_t AliHBTParticle::GetPIDprobability(Int_t pdg) | |
233 | { | |
234 | Int_t idx = GetPidSlot(pdg); | |
235 | if (idx < 0) return 0.0;//such pid was not specified for this particle | |
236 | return fPidProb[idx]; | |
237 | } | |
238 | //______________________________________________________________________________ | |
239 | ||
1b446896 | 240 | const Char_t* AliHBTParticle::GetName() const |
241 | { | |
242 | static char def[4] = "XXX"; | |
8089a083 | 243 | const TParticlePDG *ap = TDatabasePDG::Instance()->GetParticle(GetPdgCode()); |
1b446896 | 244 | if (ap) return ap->GetName(); |
245 | else return def; | |
246 | } | |
247 | ||
248 | ||
249 | //______________________________________________________________________________ | |
8089a083 | 250 | Int_t AliHBTParticle::GetPidSlot(Int_t pdg) const |
251 | { | |
252 | //returns position of the given PID in fPids (and fPidProb) array. | |
253 | if (fPids == 0x0) return -1; | |
254 | for (Int_t i = 0; i< fNPids; i++) | |
255 | { | |
256 | if (fPids[i] == pdg) return i; | |
257 | } | |
258 | return -1; | |
259 | } | |
e665964c | 260 | //______________________________________________________________________________ |
261 | ||
262 | Int_t AliHBTParticle::GetNthPid(Int_t idx) const | |
263 | { | |
264 | //returns PID sitting on slot idx in fPids | |
265 | if ( (idx < 0) || (idx >= fNPids) ) | |
266 | { | |
267 | Error("GetNthPid","Out Of Bounds"); | |
268 | return 0; | |
269 | } | |
270 | return fPids[idx]; | |
271 | } | |
272 | //______________________________________________________________________________ | |
1b446896 | 273 | |
e665964c | 274 | Float_t AliHBTParticle::GetNthPidProb(Int_t idx) const |
275 | { | |
276 | //returns PID sitting on slot idx in fPidProb | |
277 | if ( (idx < 0) || (idx >= fNPids) ) | |
278 | { | |
279 | Error("GetNthPid","Out Of Bounds"); | |
280 | return 0; | |
281 | } | |
282 | return fPidProb[idx]; | |
283 | } | |
8089a083 | 284 | //______________________________________________________________________________ |
e665964c | 285 | |
8089a083 | 286 | void AliHBTParticle::Print() const |
287 | { | |
288 | //prints information about particle | |
289 | printf("____________________________________________________\n"); | |
e665964c | 290 | printf("Idx: %d PID: %d Name: ",fIdxInEvent,GetPdgCode()); |
8089a083 | 291 | TParticlePDG *pdgp = TDatabasePDG::Instance()->GetParticle(GetPdgCode()); |
292 | if (pdgp) | |
293 | { | |
e665964c | 294 | printf("%s Mass: %f\n",pdgp->GetName(),pdgp->Mass()); |
8089a083 | 295 | } |
296 | else | |
297 | { | |
298 | printf("Not known\n"); | |
299 | } | |
300 | ||
ff3d1148 | 301 | printf("Px: %+f Py: %+f Pz: %+f E: %+f Calculated Mass: %f\nVx: %+f Vy: %+f Vz: %+f T: %+f\n", |
8089a083 | 302 | Px(),Py(),Pz(),Energy(),GetCalcMass(),Vx(),Vy(),Vz(),T()); |
1b446896 | 303 | |
8089a083 | 304 | for (Int_t i = 0; i < fNPids; i++) |
305 | { | |
ff3d1148 | 306 | printf("# %d PID: %d Probability %f name ",i,fPids[i],fPidProb[i]); |
8089a083 | 307 | const TParticlePDG *ap = TDatabasePDG::Instance()->GetParticle(fPids[i]); |
308 | if (ap) | |
309 | { | |
310 | printf("%s Mass %f\n",ap->GetName(),ap->Mass()); | |
311 | } | |
312 | else | |
313 | { | |
314 | printf("Not known\n"); | |
315 | } | |
316 | } | |
317 | } | |
ff3d1148 | 318 | |
319 | //______________________________________________________________________________ | |
320 | ||
321 | //void AliHBTParticle::Streamer(TBuffer &b) | |
322 | //{ | |
323 | // // Stream all objects in the array to or from the I/O buffer. | |
324 | // UInt_t R__s, R__c; | |
325 | // Int_t i; | |
326 | // if (b.IsReading()) | |
327 | // { | |
328 | // delete [] fPids; | |
329 | // delete [] fPidProb; | |
330 | // | |
331 | // Version_t v = b.ReadVersion(&R__s, &R__c); | |
332 | // if (v == 1) | |
333 | // { | |
334 | // AliHBTParticle::Class()->ReadBuffer(b, this); | |
335 | // } | |
336 | // else | |
337 | // { | |
338 | // TObject::Streamer(b); | |
339 | // b >> fPdgIdx; | |
340 | // b >> fIdxInEvent; | |
341 | // | |
342 | // b >> fNPids; | |
343 | // Int_t* fPids = new Int_t[fNPids]; | |
344 | // Float_t* fPidProb = new Float_t[fNPids]; | |
345 | // for (i = 0;i<fNPids;i++) | |
346 | // { | |
347 | // b >> fPids[i]; | |
348 | // } | |
349 | // for (i = 0;i<fNPids;i++) | |
350 | // { | |
351 | // b >> fPidProb[i]; | |
352 | // } | |
353 | // b >> fCalcMass; | |
354 | // | |
355 | // b >> fPx; | |
356 | // b >> fPy; | |
357 | // b >> fPz; | |
358 | // b >> fE; | |
359 | // | |
360 | // b >> fVx; | |
361 | // b >> fVy; | |
362 | // b >> fVz; | |
363 | // b >> fVt; | |
364 | // Info("Streamer","Read data"); | |
365 | // Print(); | |
366 | // } | |
367 | // | |
368 | // b.CheckByteCount(R__s, R__c,AliHBTParticle::IsA()); | |
369 | // } | |
370 | // else | |
371 | // { | |
372 | // R__c = b.WriteVersion(AliHBTParticle::IsA(), kTRUE); | |
373 | // TObject::Streamer(b); | |
374 | // Info("Streamer","Read data"); | |
375 | // Print(); | |
376 | // | |
377 | // b << fPdgIdx; | |
378 | // b << fIdxInEvent; | |
379 | // b << fNPids; | |
380 | // for (i = 0;i<fNPids;i++) | |
381 | // { | |
382 | // b << fPids[i]; | |
383 | // } | |
384 | // { | |
385 | // { | |
386 | // for (i = 0;i<fNPids;i++) | |
387 | // { | |
388 | // b << fPidProb[i]; | |
389 | // } | |
390 | // b << fCalcMass; | |
391 | // | |
392 | // b << fPx; | |
393 | // b << fPy; | |
394 | // b << fPz; | |
395 | // b << fE; | |
396 | // | |
397 | // b << fVx; | |
398 | // b << fVy; | |
399 | // b << fVz; | |
400 | // b << fVt; | |
401 | // | |
402 | // b.SetByteCount(R__c, kTRUE); | |
403 | // } | |
404 | //} |