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23b18f4e | 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 | ||
7442bceb | 16 | //////////////////////////////////////////////////////////////////////////// |
17 | // // | |
18 | // Surveyed Laser Track positions // | |
19 | // the position and direction information are stored in // | |
20 | // the AliExternalTrackParam base class // | |
21 | // This class extends this information by identification parameters // | |
22 | /* | |
23 | ||
24 | //Dump positions to a tree: | |
25 | AliTPCLaserTrack::LoadTracks(); | |
26 | TObjArray *arr=AliTPCLaserTrack::GetTracks(); | |
27 | TTreeSRedirector *s=new TTreeSRedirector("LaserTracks.root"); | |
28 | TIter next(arr); | |
29 | TObject *o=0x0; | |
30 | while ( (o=next()) ) (*s) << "tracks" << "l.=" << o << "\n"; | |
31 | delete s; | |
32 | ||
33 | //draw something | |
34 | TFile f("LaserTracks.root"); | |
35 | TTree *tracks=(TTree*)f.Get("tracks"); | |
36 | tracks->Draw("fVecGY.fElements:fVecGX.fElements"); | |
37 | ||
38 | tracks->Draw("fVecGY.fElements:fVecGX.fElements>>h(500,-250,250,500,-250,250)","fId<7") | |
39 | */ | |
40 | // // | |
41 | //////////////////////////////////////////////////////////////////////////// | |
42 | ||
23b18f4e | 43 | |
44 | #include <TObjArray.h> | |
45 | #include <TFile.h> | |
46 | #include <TString.h> | |
47 | #include <TSystem.h> | |
48 | ||
49 | #include "AliLog.h" | |
7442bceb | 50 | #include "AliCDBManager.h" |
51 | #include "AliCDBEntry.h" | |
52 | #include "AliCDBPath.h" | |
23b18f4e | 53 | #include "AliTPCLaserTrack.h" |
e955044f | 54 | #include "AliTPCROC.h" |
23b18f4e | 55 | |
56 | ClassImp(AliTPCLaserTrack) | |
57 | ||
58 | TObjArray *AliTPCLaserTrack::fgArrLaserTracks=0x0; | |
59 | ||
60 | AliTPCLaserTrack::AliTPCLaserTrack() : | |
61 | AliExternalTrackParam(), | |
62 | fId(-1), | |
63 | fSide(-1), | |
64 | fRod(-1), | |
65 | fBundle(-1), | |
7804aba0 | 66 | fBeam(-1), |
e955044f | 67 | fRayLength(0), |
68 | fVecSec(0), // points vectors - sector | |
69 | fVecP2(0), // points vectors - snp | |
70 | fVecPhi(0), // points vectors - global phi | |
71 | fVecGX(0), // points vectors - globalX | |
72 | fVecGY(0), // points vectors - globalY | |
73 | fVecGZ(0), // points vectors - globalZ | |
74 | fVecLX(0), // points vectors - localX | |
75 | fVecLY(0), // points vectors - localY | |
76 | fVecLZ(0) // points vectors - localZ | |
23b18f4e | 77 | { |
78 | // | |
7442bceb | 79 | // // Default constructor |
23b18f4e | 80 | // |
81 | ||
82 | } | |
83 | ||
7804aba0 | 84 | AliTPCLaserTrack::AliTPCLaserTrack(const AliTPCLaserTrack <r) : |
23b18f4e | 85 | AliExternalTrackParam(ltr), |
86 | fId(ltr.fId), | |
87 | fSide(ltr.fSide), | |
88 | fRod(ltr.fRod), | |
89 | fBundle(ltr.fBundle), | |
7804aba0 | 90 | fBeam(ltr.fBeam), |
e955044f | 91 | fRayLength(ltr.fRayLength), |
92 | fVecSec(0), // points vectors - sector | |
93 | fVecP2(0), // points vectors - snp | |
94 | fVecPhi(0), // points vectors - global phi | |
95 | fVecGX(0), // points vectors - globalX | |
96 | fVecGY(0), // points vectors - globalY | |
97 | fVecGZ(0), // points vectors - globalZ | |
98 | fVecLX(0), // points vectors - localX | |
99 | fVecLY(0), // points vectors - localY | |
100 | fVecLZ(0) // points vectors - localZ | |
23b18f4e | 101 | { |
102 | // | |
103 | // Default constructor | |
104 | // | |
e955044f | 105 | fVecSec=new TVectorD(*ltr.fVecSec); // points vectors - sector |
106 | fVecP2 =new TVectorD(*ltr.fVecP2); // points vectors - snp | |
107 | fVecPhi=new TVectorD(*ltr.fVecPhi); // points vectors - global phi | |
108 | fVecGX =new TVectorD(*ltr.fVecGX); // points vectors - globalX | |
109 | fVecGY =new TVectorD(*ltr.fVecGY); // points vectors - globalY | |
110 | fVecGZ =new TVectorD(*ltr.fVecGZ); // points vectors - globalZ | |
111 | fVecLX =new TVectorD(*ltr.fVecLX); // points vectors - localX | |
112 | fVecLY =new TVectorD(*ltr.fVecLY); // points vectors - localY | |
113 | fVecLZ =new TVectorD(*ltr.fVecLZ); // points vectors - localY | |
23b18f4e | 114 | |
115 | } | |
116 | ||
117 | AliTPCLaserTrack::AliTPCLaserTrack(const Int_t id, const Int_t side, const Int_t rod, | |
118 | const Int_t bundle, const Int_t beam, | |
119 | Double_t x, Double_t alpha, | |
120 | const Double_t param[5], | |
7804aba0 | 121 | const Double_t covar[15], const Float_t rayLength) : |
23b18f4e | 122 | AliExternalTrackParam(x,alpha,param,covar), |
123 | fId(id), | |
124 | fSide(side), | |
125 | fRod(rod), | |
126 | fBundle(bundle), | |
7804aba0 | 127 | fBeam(beam), |
e955044f | 128 | fRayLength(rayLength), |
129 | fVecSec(new TVectorD(159)), // points vectors - sector | |
130 | fVecP2(new TVectorD(159)), // points vectors - snp | |
131 | fVecPhi(new TVectorD(159)), // points vectors - global phi | |
132 | fVecGX(new TVectorD(159)), // points vectors - globalX | |
133 | fVecGY(new TVectorD(159)), // points vectors - globalY | |
134 | fVecGZ(new TVectorD(159)), // points vectors - globalZ | |
135 | fVecLX(new TVectorD(159)), // points vectors - localX | |
136 | fVecLY(new TVectorD(159)), // points vectors - localY | |
137 | fVecLZ(new TVectorD(159)) // points vectors - localZ | |
138 | ||
23b18f4e | 139 | { |
140 | // | |
141 | // create laser track from arguments | |
142 | // | |
e955044f | 143 | |
23b18f4e | 144 | } |
7804aba0 | 145 | //_____________________________________________________________________ |
146 | AliTPCLaserTrack& AliTPCLaserTrack::operator = (const AliTPCLaserTrack &source) | |
147 | { | |
148 | // | |
149 | // assignment operator | |
150 | // | |
151 | if (&source == this) return *this; | |
152 | new (this) AliTPCLaserTrack(source); | |
153 | ||
154 | return *this; | |
155 | } | |
23b18f4e | 156 | |
e955044f | 157 | |
158 | AliTPCLaserTrack::~AliTPCLaserTrack(){ | |
159 | // | |
160 | // destructor | |
161 | // | |
162 | delete fVecSec; // - sector numbers | |
163 | delete fVecP2; // - P2 | |
164 | delete fVecPhi; // points vectors - global phi | |
165 | delete fVecGX; // points vectors - globalX | |
166 | delete fVecGY; // points vectors - globalY | |
167 | delete fVecGZ; // points vectors - globalZ | |
168 | delete fVecLX; // points vectors - localX | |
169 | delete fVecLY; // points vectors - localY | |
170 | delete fVecLZ; // points vectors - localZ | |
171 | } | |
172 | ||
23b18f4e | 173 | void AliTPCLaserTrack::LoadTracks() |
174 | { | |
7442bceb | 175 | // |
176 | // Load all design positions from file into the static array fgArrLaserTracks | |
177 | // | |
178 | ||
179 | if ( fgArrLaserTracks ) return; | |
78f17711 | 180 | TObjArray *arrLaserTracks = 0x0; |
7442bceb | 181 | |
182 | AliCDBManager *man=AliCDBManager::Instance(); | |
78f17711 | 183 | if (!man->GetDefaultStorage() && gSystem->Getenv("ALICE_ROOT")) man->SetDefaultStorage("local://$ALICE_ROOT/OCDB"); |
184 | if (man->GetDefaultStorage()){ | |
185 | if (man->GetRun()<0) man->SetRun(0); | |
186 | AliCDBEntry *entry=man->Get(AliCDBPath("TPC/Calib/LaserTracks")); | |
768e46f1 | 187 | if (!entry) return; |
78f17711 | 188 | arrLaserTracks = (TObjArray*)entry->GetObject(); |
189 | entry->SetOwner(kTRUE); | |
190 | } else { | |
191 | if (!gSystem->AccessPathName("LaserTracks.root")){ | |
192 | TFile f("LaserTracks.root"); | |
193 | arrLaserTracks=(TObjArray*)f.Get("arrLaserTracks"); | |
194 | f.Close(); | |
195 | } | |
196 | } | |
7442bceb | 197 | if ( !arrLaserTracks ) { |
23b18f4e | 198 | // AliWarning(Form("Could not get laser position data from file: '%s'",fgkDataFileName)); |
7442bceb | 199 | return; |
200 | } | |
201 | ||
78f17711 | 202 | arrLaserTracks->SetOwner(); |
203 | ||
7442bceb | 204 | fgArrLaserTracks = new TObjArray(fgkNLaserTracks); |
78f17711 | 205 | fgArrLaserTracks->SetOwner(); |
7442bceb | 206 | for (Int_t itrack=0; itrack<fgkNLaserTracks; itrack++){ |
207 | AliTPCLaserTrack *ltr = (AliTPCLaserTrack*)arrLaserTracks->At(itrack); | |
208 | if ( !ltr ){ | |
23b18f4e | 209 | // AliWarning(Form("No informatino found for Track %d!",itrack)); |
7442bceb | 210 | continue; |
23b18f4e | 211 | } |
7442bceb | 212 | ltr->UpdatePoints(); |
213 | fgArrLaserTracks->AddAt(new AliTPCLaserTrack(*ltr),itrack); | |
214 | } | |
78f17711 | 215 | |
216 | delete arrLaserTracks; | |
23b18f4e | 217 | } |
218 | ||
f1fcccb7 | 219 | |
e955044f | 220 | void AliTPCLaserTrack::UpdatePoints(){ |
221 | // | |
222 | // update track points | |
223 | // | |
7442bceb | 224 | const Double_t kMaxSnp=0.97; |
e955044f | 225 | AliTPCROC* roc = AliTPCROC::Instance(); |
226 | // | |
227 | // | |
228 | if (!fVecSec){ | |
229 | fVecSec=new TVectorD(159); | |
230 | fVecP2 =new TVectorD(159); // - P2 | |
231 | fVecPhi=new TVectorD(159); // - Phi | |
232 | fVecGX=new TVectorD(159); // points vectors - globalX | |
233 | fVecGY=new TVectorD(159); // points vectors - globalY | |
234 | fVecGZ=new TVectorD(159); // points vectors - globalZ | |
235 | fVecLX=new TVectorD(159); // points vectors - localX | |
236 | fVecLY=new TVectorD(159); // points vectors - localY | |
237 | fVecLZ=new TVectorD(159); // points vectors - localZ | |
238 | ||
239 | } | |
240 | for (Int_t irow=158; irow>=0; irow--){ | |
7442bceb | 241 | (*fVecSec)[irow]= -1; // - |
e955044f | 242 | (*fVecP2)[irow] = 0; // - P2 -snp |
243 | (*fVecPhi)[irow]= 0; // - global phi | |
244 | (*fVecGX)[irow] = 0; // points vectors - globalX | |
245 | (*fVecGY)[irow] = 0; // points vectors - globalY | |
246 | (*fVecGZ)[irow] = 0; // points vectors - globalZ | |
247 | (*fVecLX)[irow] = 0; // points vectors - localX | |
248 | (*fVecLY)[irow] = 0; // points vectors - localY | |
249 | (*fVecLZ)[irow] = 0; // points vectors - localZ | |
250 | ||
251 | } | |
252 | Double_t gxyz[3]; | |
253 | Double_t lxyz[3]; | |
254 | AliTPCLaserTrack*ltrp=new AliTPCLaserTrack(*this); //make temporary track | |
255 | ||
256 | for (Int_t irow=158; irow>=0; irow--){ | |
257 | UInt_t srow = irow; | |
258 | Int_t sector=0; | |
259 | ||
260 | if (srow >=roc->GetNRows(0)) { | |
261 | srow-=roc->GetNRows(0); | |
262 | sector=36 ; | |
263 | } | |
264 | lxyz[0]= roc->GetPadRowRadii(sector,srow); | |
265 | if (!ltrp->PropagateTo(lxyz[0],5)) break; | |
266 | ltrp->GetXYZ(gxyz); | |
267 | // | |
268 | Double_t alpha=TMath::ATan2(gxyz[1],gxyz[0]); | |
269 | if (alpha<0) alpha+=2*TMath::Pi(); | |
270 | sector +=TMath::Nint(-0.5+9*alpha/TMath::Pi()); | |
fb962ae3 | 271 | if (gxyz[2]<0) sector+=18; |
e955044f | 272 | Double_t salpha = TMath::Pi()*(sector+0.5)/9.; |
273 | if (!ltrp->Rotate(salpha)) break; | |
274 | if (!ltrp->PropagateTo(lxyz[0],5)) break; | |
275 | if (TMath::Abs(ltrp->GetSnp())>kMaxSnp) break; | |
276 | ltrp->GetXYZ(gxyz); | |
277 | lxyz[1]=ltrp->GetY(); | |
278 | lxyz[2]=ltrp->GetZ(); | |
279 | (*fVecSec)[irow]= sector; | |
280 | (*fVecP2)[irow] = ltrp->GetSnp(); // - P2 -snp | |
281 | (*fVecPhi)[irow]= TMath::ATan2(gxyz[1],gxyz[0]); // - global phi | |
282 | (*fVecGX)[irow] = gxyz[0]; // points vectors - globalX | |
283 | (*fVecGY)[irow] = gxyz[1]; // points vectors - globalY | |
284 | (*fVecGZ)[irow] = gxyz[2]; // points vectors - globalZ | |
285 | (*fVecLX)[irow] = lxyz[0]; // points vectors - localX | |
286 | (*fVecLY)[irow] = lxyz[1]; // points vectors - localY | |
287 | (*fVecLZ)[irow] = lxyz[2]; // points vectors - localZ | |
288 | ||
289 | } | |
290 | delete ltrp; // delete temporary track | |
291 | } | |
292 | ||
38b1a1ca | 293 | Int_t AliTPCLaserTrack::IdentifyTrack(AliExternalTrackParam *track, Int_t side) |
23b18f4e | 294 | { |
f1fcccb7 | 295 | // |
296 | // Find the laser track which is corresponding closest to 'track' | |
297 | // return its id | |
298 | // | |
299 | // | |
b51d4393 | 300 | const Float_t kMaxdphi=0.2; |
265e5fdb | 301 | const Float_t kMaxdphiP=0.05; |
302 | const Float_t kMaxdz=40; | |
f1fcccb7 | 303 | |
304 | if ( !fgArrLaserTracks ) LoadTracks(); | |
305 | TObjArray *arrTracks = GetTracks(); | |
f1fcccb7 | 306 | Double_t lxyz0[3]; |
307 | Double_t lxyz1[3]; | |
308 | Double_t pxyz0[3]; | |
309 | Double_t pxyz1[3]; | |
310 | track->GetXYZ(lxyz0); | |
38b1a1ca | 311 | track->GetDirection(pxyz0); |
265e5fdb | 312 | // |
38b1a1ca | 313 | Float_t mindist=10; // maxima minimal distance |
f1fcccb7 | 314 | Int_t id = -1; |
38b1a1ca | 315 | for (Int_t itrack=0; itrack<fgkNLaserTracks; itrack++){ |
316 | AliTPCLaserTrack *ltr = (AliTPCLaserTrack*)arrTracks->UncheckedAt(itrack); | |
317 | if (side>=0) if (ltr->GetSide()!=side) continue; | |
f1fcccb7 | 318 | Double_t * kokot = (Double_t*)ltr->GetParameter(); |
319 | kokot[4]=-0.0000000001; | |
23b18f4e | 320 | // |
f1fcccb7 | 321 | ltr->GetXYZ(lxyz1); |
b51d4393 | 322 | if (TMath::Abs(lxyz1[2]-lxyz0[2])>kMaxdz) continue; |
f1fcccb7 | 323 | // phi position |
324 | Double_t phi0 = TMath::ATan2(lxyz0[1],lxyz0[0]); | |
325 | Double_t phi1 = TMath::ATan2(lxyz1[1],lxyz1[0]); | |
b51d4393 | 326 | if (TMath::Abs(phi0-phi1)>kMaxdphi) continue; |
f1fcccb7 | 327 | // phi direction |
38b1a1ca | 328 | ltr->GetDirection(pxyz1); |
329 | Float_t direction= pxyz0[0]*pxyz1[0] + pxyz0[1]*pxyz1[1] + pxyz0[2]*pxyz1[2]; | |
330 | Float_t distdir = (1-TMath::Abs(direction))*90.; //distance at entrance | |
331 | if (1-TMath::Abs(direction)>kMaxdphiP) | |
f1fcccb7 | 332 | continue; |
23b18f4e | 333 | // |
265e5fdb | 334 | Float_t dist=0; |
335 | dist+=TMath::Abs(lxyz1[0]-lxyz0[0]); | |
336 | dist+=TMath::Abs(lxyz1[1]-lxyz0[1]); | |
38b1a1ca | 337 | // dist+=TMath::Abs(lxyz1[2]-lxyz0[2]); //z is not used for distance calculation |
265e5fdb | 338 | dist+=distdir; |
339 | // | |
340 | if (id<0) { | |
341 | id =itrack; | |
342 | mindist=dist; | |
265e5fdb | 343 | continue; |
344 | } | |
345 | if (dist>mindist) continue; | |
346 | id = itrack; | |
347 | mindist=dist; | |
f1fcccb7 | 348 | } |
349 | return id; | |
23b18f4e | 350 | } |
351 |