1 /**************************************************************************
2 * Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 //-------------------------------------------------------------------------
19 // AOD track base class
20 // Author: Markus Oldenburg, CERN
21 //-------------------------------------------------------------------------
23 #include "AliAODTrack.h"
27 //______________________________________________________________________________
28 AliAODTrack::AliAODTrack() :
39 // default constructor
42 SetPosition((Float_t*)NULL);
43 SetPID((Float_t*)NULL);
46 //______________________________________________________________________________
47 AliAODTrack::AliAODTrack(Int_t id,
53 Double_t covMatrix[21],
57 AliAODVertex *prodVertex,
64 fProdVertex(prodVertex),
66 fITSClusterMap(itsClusMap),
72 SetPosition(x, isDCA);
73 if(covMatrix) SetCovMatrix(covMatrix);
78 //______________________________________________________________________________
79 AliAODTrack::AliAODTrack(Int_t id,
85 Float_t covMatrix[21],
89 AliAODVertex *prodVertex,
96 fProdVertex(prodVertex),
98 fITSClusterMap(itsClusMap),
104 SetPosition(x, isDCA);
105 if(covMatrix) SetCovMatrix(covMatrix);
111 //______________________________________________________________________________
112 AliAODTrack::~AliAODTrack()
119 //______________________________________________________________________________
120 AliAODTrack::AliAODTrack(const AliAODTrack& trk) :
121 AliVirtualParticle(trk),
126 fProdVertex(trk.fProdVertex),
127 fCharge(trk.fCharge),
128 fITSClusterMap(trk.fITSClusterMap),
134 trk.GetPosition(fPosition);
135 if(trk.fCovMatrix) fCovMatrix=new AliAODTrkCov(*trk.fCovMatrix);
140 //______________________________________________________________________________
141 AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk)
143 // Assignment operator
146 AliVirtualParticle::operator=(trk);
149 trk.GetPosition(fPosition);
158 if(trk.fCovMatrix) fCovMatrix=new AliAODTrkCov(*trk.fCovMatrix);
159 else fCovMatrix=NULL;
160 fProdVertex = trk.fProdVertex;
162 fCharge = trk.fCharge;
163 fITSClusterMap = trk.fITSClusterMap;
170 //______________________________________________________________________________
171 template <class T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian)
177 Double_t pt = TMath::Sqrt(p[0]*p[0] + p[1]*p[1]);
178 Double_t P = TMath::Sqrt(pt*pt + p[2]*p[2]);
180 fMomentum[0] = 1./pt;
181 fMomentum[1] = TMath::ACos(p[2]/P);
182 fMomentum[2] = TMath::ATan2(p[1], p[0]);
184 fMomentum[0] = p[0]; // 1/pt
185 fMomentum[1] = p[1]; // phi
186 fMomentum[2] = p[2]; // theta
189 fMomentum[0] = -999.;
190 fMomentum[1] = -999.;
191 fMomentum[2] = -999.;
195 //______________________________________________________________________________
196 template <class T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca)
209 // don't know any better yet
210 fPosition[0] = -999.;
211 fPosition[1] = -999.;
212 fPosition[2] = -999.;
217 fPosition[0] = -999.;
218 fPosition[1] = -999.;
219 fPosition[2] = -999.;
223 //______________________________________________________________________________
224 void AliAODTrack::SetDCA(Double_t d, Double_t z)
233 //______________________________________________________________________________
234 void AliAODTrack::Print(Option_t* /* option */) const
236 // prints information about AliAODTrack
238 printf("Object name: %s Track type: %s\n", GetName(), GetTitle());
239 printf(" px = %f\n", Px());
240 printf(" py = %f\n", Py());
241 printf(" pz = %f\n", Pz());
242 printf(" pt = %f\n", Pt());
243 printf(" 1/pt = %f\n", OneOverPt());
244 printf(" theta = %f\n", Theta());
245 printf(" phi = %f\n", Phi());
246 printf(" chi2 = %f\n", Chi2());
247 printf(" charge = %d\n", Charge());
248 printf(" PID object: %p\n", PID());
251 //-------------------------------------------------------------------------
252 // AOD track cov matrix base class
253 //-------------------------------------------------------------------------
255 ClassImp(AliAODTrack::AliAODTrkCov)
257 //______________________________________________________________________________
258 template <class T> void AliAODTrack::AliAODTrkCov::GetCovMatrix(T *cmat) const
261 // Returns the external cov matrix
263 cmat[ 0] = fDiag[ 0]*fDiag[ 0];
264 cmat[ 2] = fDiag[ 1]*fDiag[ 1];
265 cmat[ 5] = fDiag[ 2]*fDiag[ 2];
266 cmat[ 9] = fDiag[ 3]*fDiag[ 3];
267 cmat[14] = fDiag[ 4]*fDiag[ 4];
268 cmat[20] = fDiag[ 5]*fDiag[ 5];
270 cmat[ 1] = fODia[ 0]*fDiag[ 0]*fDiag[ 1];
271 cmat[ 3] = fODia[ 1]*fDiag[ 0]*fDiag[ 2];
272 cmat[ 4] = fODia[ 2]*fDiag[ 1]*fDiag[ 2];
273 cmat[ 6] = fODia[ 3]*fDiag[ 0]*fDiag[ 3];
274 cmat[ 7] = fODia[ 4]*fDiag[ 1]*fDiag[ 3];
275 cmat[ 8] = fODia[ 5]*fDiag[ 2]*fDiag[ 3];
276 cmat[10] = fODia[ 6]*fDiag[ 0]*fDiag[ 4];
277 cmat[11] = fODia[ 7]*fDiag[ 1]*fDiag[ 4];
278 cmat[12] = fODia[ 8]*fDiag[ 2]*fDiag[ 4];
279 cmat[13] = fODia[ 9]*fDiag[ 3]*fDiag[ 4];
280 cmat[15] = fODia[10]*fDiag[ 0]*fDiag[ 5];
281 cmat[16] = fODia[11]*fDiag[ 1]*fDiag[ 5];
282 cmat[17] = fODia[12]*fDiag[ 2]*fDiag[ 5];
283 cmat[18] = fODia[13]*fDiag[ 3]*fDiag[ 5];
284 cmat[19] = fODia[14]*fDiag[ 4]*fDiag[ 5];
288 //______________________________________________________________________________
289 template <class T> void AliAODTrack::AliAODTrkCov::SetCovMatrix(T *cmat)
292 // Sets the external cov matrix
295 fDiag[ 0] = TMath::Sqrt(cmat[ 0]);
296 fDiag[ 1] = TMath::Sqrt(cmat[ 2]);
297 fDiag[ 2] = TMath::Sqrt(cmat[ 5]);
298 fDiag[ 3] = TMath::Sqrt(cmat[ 9]);
299 fDiag[ 4] = TMath::Sqrt(cmat[14]);
300 fDiag[ 5] = TMath::Sqrt(cmat[20]);
302 fODia[ 0] = cmat[ 1]/(fDiag[ 0]*fDiag[ 1]);
303 fODia[ 1] = cmat[ 3]/(fDiag[ 0]*fDiag[ 2]);
304 fODia[ 2] = cmat[ 4]/(fDiag[ 1]*fDiag[ 2]);
305 fODia[ 3] = cmat[ 6]/(fDiag[ 0]*fDiag[ 3]);
306 fODia[ 4] = cmat[ 7]/(fDiag[ 1]*fDiag[ 3]);
307 fODia[ 5] = cmat[ 8]/(fDiag[ 2]*fDiag[ 3]);
308 fODia[ 6] = cmat[10]/(fDiag[ 0]*fDiag[ 4]);
309 fODia[ 7] = cmat[11]/(fDiag[ 1]*fDiag[ 4]);
310 fODia[ 8] = cmat[12]/(fDiag[ 2]*fDiag[ 4]);
311 fODia[ 9] = cmat[13]/(fDiag[ 3]*fDiag[ 4]);
312 fODia[10] = cmat[15]/(fDiag[ 0]*fDiag[ 5]);
313 fODia[11] = cmat[16]/(fDiag[ 1]*fDiag[ 5]);
314 fODia[12] = cmat[17]/(fDiag[ 2]*fDiag[ 5]);
315 fODia[13] = cmat[18]/(fDiag[ 3]*fDiag[ 5]);
316 fODia[14] = cmat[19]/(fDiag[ 4]*fDiag[ 5]);
318 for(Int_t i=0; i< 6; ++i) fDiag[i]=-999.;
319 for(Int_t i=0; i<15; ++i) fODia[i]=0.;