HLT/src/AliL3Merger.cxx

   1 //$Id$
   2
   3 // Author: Uli Frankenfeld <mailto:franken@fi.uib.no>
   4 //*-- Copyright &copy Uli
   5
   6 #include "AliL3Logging.h"
   7 #include <math.h>
   8 #include <iostream.h>
   9 #include "AliL3Merger.h"
  10 #include "AliL3Track.h"
  11 #include "AliL3TrackSegmentData.h"
  12 #include "AliL3Transform.h"
  13 #include "AliL3TrackArray.h"
  14
  15 #ifdef use_root //use root ntuple for slow merge
  16 #include <TNtuple.h>
  17 #include <TTree.h>
  18 #include <TFile.h>
  19 #endif
  20
  21 //_____________________________________________________________
  22 // AliL3Merger
  23 //
  24 // The L3 merger base class
  25 //
  26
  27 ClassImp(AliL3Merger)
  28
  29 AliL3Merger::AliL3Merger(){
  30   //Default constructor
  31   fTransformer= 0;
  32   SetArray(0);
  33 }
  34
  35
  36 AliL3Merger::AliL3Merger(Int_t ntrackarrays,Char_t *tracktype){
  37   //Constructor.
  38
  39   if(strcmp(tracktype,"AliL3Track")==0) fTrackType='t';
  40   else if(strcmp(tracktype,"AliL3ConfMapTrack")==0) fTrackType='c';
  41   else if(strcmp(tracktype,"AliL3HoughTrack")==0) fTrackType='h';
  42   else
  43     LOG(AliL3Log::kError,"AliL3Merger::AliL3Merger","Track types")
  44       <<"Unknown tracktype"<<ENDLOG;
  45   SetArray(ntrackarrays);
  46   fCurrentTracks=0;
  47
  48 }
  49
  50 AliL3Merger::~AliL3Merger(){
  51   //Destructor
  52   DeleteArray();
  53 }
  54
  55 void AliL3Merger::DeleteArray(){
  56   for(Int_t i=0; i<fNIn;i++)
  57     delete fInTrack[i];
  58   delete[] (Byte_t*) fInTrack;
  59   delete fOutTrack;
  60 }
  61
  62 void AliL3Merger::SetArray(Int_t nin){
  63   fNIn = nin;
  64   fInTrack = (AliL3TrackArray **) new Byte_t[fNIn*sizeof(AliL3TrackArray *)];
  65   for(Int_t i=0; i<fNIn;i++){
  66     if(fTrackType=='h')
  67       fInTrack[i] = new AliL3TrackArray("AliL3HoughTrack");
  68     else
  69       fInTrack[i] = new AliL3TrackArray("AliL3Track");
  70
  71   }
  72   if(fTrackType=='h')
  73     fOutTrack= new AliL3TrackArray("AliL3HoughTrack");
  74   else
  75     fOutTrack= new AliL3TrackArray("AliL3Track");
  76 }
  77
  78 void AliL3Merger::Reset(){
  79   for(Int_t i=0; i<fNIn;i++){
  80     fInTrack[i]->Reset();
  81   }
  82   fOutTrack->Reset();
  83 }
  84
  85 void AliL3Merger::FillTracks(Int_t ntracks, AliL3TrackSegmentData* tr){
  86   //Read tracks from shared memory (or memory)
  87   AliL3TrackArray *destination = GetInTracks(fCurrentTracks);
  88   if(Is2Global())
  89     destination->FillTracks(ntracks, tr, fSlice, fTransformer);
  90   else
  91     destination->FillTracks(ntracks, tr);
  92 }
  93
  94 void AliL3Merger::AddAllTracks(){
  95   for(Int_t i=0; i<GetNIn();i++){
  96     AliL3TrackArray *in = GetInTracks(i);
  97     AliL3TrackArray *out = GetOutTracks();
  98     out->AddTracks(in);
  99   }
 100 }
 101
 102 void AliL3Merger::SortGlobalTracks(AliL3Track **tracks, Int_t ntrack){
 103   AliL3Track **tmp = new AliL3Track*[ntrack];
 104   for(Int_t i=0;i<ntrack;i++) tmp[i] = tracks[i];
 105   Int_t *t = new Int_t[ntrack];
 106   for(Int_t i=0;i<ntrack;i++) t[i]=-1;
 107
 108   for(Int_t j=0;j<ntrack;j++){
 109     Double_t minr=300;
 110     Int_t    mini=0;
 111     for(Int_t i=0;i<ntrack;i++){
 112      if(!tracks[i]) continue;
 113        Double_t rr=pow(tracks[i]->GetFirstPointX(),2)+pow(tracks[i]->GetFirstPointY(),2);
 114        Double_t r=sqrt(rr);
 115        if(r<minr){
 116          minr=r;
 117          mini=i;
 118        }
 119     }
 120     t[j]=mini;
 121     tracks[mini]=0;
 122   }
 123   for(Int_t i=0;i<ntrack;i++) tracks[i] = tmp[t[i]];
 124   delete[] t;
 125   delete[] tmp;
 126 }
 127
 128
 129 void AliL3Merger::SortTracks(AliL3Track **tracks, Int_t ntrack){
 130   AliL3Track **tmp = new  AliL3Track*[ntrack];
 131   for(Int_t i=0;i<ntrack;i++) tmp[i] = tracks[i];
 132   Int_t *t = new Int_t[ntrack];
 133   for(Int_t i=0;i<ntrack;i++) t[i]=-1;
 134
 135   for(Int_t j=0;j<ntrack;j++){
 136     Double_t minx=300;
 137     Int_t    mini=0;
 138     for(Int_t i=0;i<ntrack;i++){
 139      if(!tracks[i]) continue;
 140        if(tracks[i]->GetFirstPointX()<minx){
 141          minx=tracks[i]->GetFirstPointX();
 142          mini=i;
 143        }
 144     }
 145     t[j]=mini;
 146     tracks[mini]=0;
 147   }
 148   for(Int_t i=0;i<ntrack;i++) tracks[i] = tmp[t[i]];
 149   delete[] t;
 150   delete[] tmp;
 151 }
 152
 153 void AliL3Merger::AddTrack(AliL3TrackArray *mergedtrack,AliL3Track *track){
 154   AliL3Track *t[1];
 155   t[0] = track;
 156   MultiMerge(mergedtrack,t,1);
 157 }
 158
 159 AliL3Track * AliL3Merger::MergeTracks(AliL3TrackArray *mergedtrack,AliL3Track *t0,AliL3Track *t1){
 160   AliL3Track *t[2];
 161   t[0] = t0;
 162   t[1] = t1;
 163   SortTracks(t,2);
 164   return MultiMerge(mergedtrack,t,2);
 165 }
 166
 167 AliL3Track * AliL3Merger::MultiMerge(AliL3TrackArray *mergedtracks,AliL3Track **tracks, Int_t ntrack){
 168 // merge the tracks!!
 169
 170 //check npoints
 171   Int_t nps = 0;
 172   for(Int_t i=0;i<ntrack;i++){
 173     nps+=tracks[i]->GetNHits();
 174   }
 175   if(nps>176){
 176     LOG(AliL3Log::kWarning,"AliL3Merger::MultiMerge","Adding Points")
 177     <<AliL3Log::kDec<<"Too many Points: "<<nps<<ENDLOG;
 178     return 0;
 179   }
 180
 181   //create new track
 182   AliL3Track *newtrack = mergedtracks->NextTrack();
 183   //copy points
 184   UInt_t nn[176];
 185   nps = 0;
 186
 187 //  for(Int_t i=0;i<ntrack;i++){
 188   for(Int_t i=ntrack-1;i>=0;i--){
 189     memcpy(&nn[nps],tracks[i]->GetHitNumbers(),tracks[i]->GetNHits()*sizeof(UInt_t));
 190     nps+=tracks[i]->GetNHits();
 191   }
 192   AliL3Track *tpf=tracks[0];
 193   AliL3Track *tpl=tracks[ntrack-1];
 194   AliL3Track *best = tpf;
 195   if(tpf->GetNHits()<tpl->GetNHits() && Is2Global())
 196     best = tpl;//Best means = most points and therefore best fit (in global case)
 197
 198   newtrack->SetNHits(nps);
 199   newtrack->SetHits(nps,nn);
 200   newtrack->SetFirstPoint(tpf->GetFirstPointX(),tpf->GetFirstPointY(),tpf->GetFirstPointZ());
 201   newtrack->SetLastPoint(tpl->GetLastPointX(),tpl->GetLastPointY(),tpl->GetLastPointZ());
 202   newtrack->SetPt(best->GetPt());
 203   newtrack->SetPsi(best->GetPsi());
 204   newtrack->SetTgl(best->GetTgl());
 205   newtrack->SetCharge(tpf->GetCharge());
 206   return newtrack;
 207 }
 208
 209 void* AliL3Merger::GetNtuple(char *varlist){
 210 #ifdef use_root
 211   TNtuple* nt = new TNtuple("ntuple","ntuple",varlist);
 212   return (void*) nt;
 213 #else
 214   return 0;
 215 #endif
 216 }
 217
 218 void* AliL3Merger::GetNtuple(){
 219 #ifdef use_root
 220   TNtuple* nt = new TNtuple("ntuple","ntuple",
 221        "dx:dy:dz:dk:dpsi:dtgl:dq:disx:disy:disz:dis:n0:n1:diff:drx:dry:drz");
 222   return (void*) nt;
 223 #else
 224   return 0;
 225 #endif
 226 }
 227
 228 Bool_t AliL3Merger::WriteNtuple(char *filename, void* nt){
 229 #ifdef use_root
 230   TNtuple *ntuple=(TNtuple *) nt;
 231   TFile *f = new TFile(filename,"RECREATE");
 232   ntuple->Write();
 233   f->Close();
 234   delete ntuple;
 235   return kTRUE;
 236 #else
 237   return kFALSE;
 238 #endif
 239 }
 240
 241 void AliL3Merger::FillNtuple(void *nt,AliL3Track *innertrack,AliL3Track *outertrack){
 242   Float_t data[17];
 243   if(outertrack->IsPoint()&&innertrack->IsPoint()){
 244     data[0] =Float_t(innertrack->GetPointX()-outertrack->GetPointX());
 245     data[1] =Float_t(innertrack->GetPointY()-outertrack->GetPointY());
 246     data[2] =Float_t(innertrack->GetPointZ()-outertrack->GetPointZ());
 247     data[3] =Float_t(innertrack->GetKappa()-outertrack->GetKappa());
 248     Double_t psi= innertrack->GetPointPsi() - outertrack->GetPointPsi();
 249     if(psi>PI) psi-=2*PI;
 250     if(psi<-PI)psi+=2*PI;
 251     data[4] =Float_t(psi);
 252     data[5] =Float_t(innertrack->GetTgl()-outertrack->GetTgl());
 253     data[6] =Float_t(innertrack->GetCharge()-outertrack->GetCharge());
 254     data[7] =Float_t(innertrack->GetLastPointX()-outertrack->GetFirstPointX());
 255     data[8] =Float_t(innertrack->GetLastPointY()-outertrack->GetFirstPointY());
 256     data[9] =Float_t(innertrack->GetLastPointZ()-outertrack->GetFirstPointZ());
 257     data[10] =sqrt(pow(data[7],2)+pow(data[8],2)+pow(data[9],2));
 258     data[11]= outertrack->GetNHits();
 259     data[12]= innertrack->GetNHits();
 260     data[13] = Float_t(TrackDiff(innertrack,outertrack));
 261 #ifdef use_root
 262     TNtuple *ntuple = (TNtuple *) nt;
 263     ntuple->Fill(data);
 264 #endif
 265   }
 266 }
 267
 268 void AliL3Merger::FillNtuple(void *nt,Float_t *data){
 269 #ifdef use_root
 270     TNtuple *ntuple = (TNtuple *) nt;
 271     ntuple->Fill(data);
 272 #endif
 273 }
 274
 275 Double_t AliL3Merger::GetAngle(Double_t a1,Double_t a2){
 276   Double_t da = a1 - a2 +4*PI;
 277   da = fmod(da,2*PI);
 278   if(da>PI) da = 2*PI -da;
 279   return da;
 280 }
 281
 282 void AliL3Merger::SetParameter(Double_t maxy, Double_t maxz, Double_t maxkappa, Double_t maxpsi, Double_t maxtgl){
 283   fMaxY = maxy;
 284   fMaxZ = maxz;
 285   fMaxKappa = maxkappa;
 286   fMaxPsi = maxpsi;
 287   fMaxTgl = maxtgl;
 288 }
 289
 290 Bool_t AliL3Merger::IsTrack(AliL3Track *innertrack,AliL3Track *outertrack){
 291
 292   if(innertrack->GetCharge()!=outertrack->GetCharge()) return kFALSE;
 293   if( (!innertrack->IsPoint()) || (!outertrack->IsPoint()) )  return kFALSE;
 294   if(innertrack->GetNHits()+outertrack->GetNHits()>176) return kFALSE;
 295
 296   if(fabs(innertrack->GetPointY()-outertrack->GetPointY()) >fMaxY) return kFALSE;
 297   if(fabs(innertrack->GetPointZ()-outertrack->GetPointZ()) >fMaxZ) return kFALSE;
 298   if(fabs(innertrack->GetKappa()-outertrack->GetKappa())   >fMaxKappa) return kFALSE;
 299   if(GetAngle(innertrack->GetPointPsi(),outertrack->GetPointPsi()) >fMaxPsi) return kFALSE;
 300   if(fabs(innertrack->GetTgl()-outertrack->GetTgl()) >fMaxTgl) return kFALSE;
 301   //if no rejection up to this point: merge!!
 302   return kTRUE;
 303 }
 304
 305 Bool_t AliL3Merger::IsRTrack(AliL3Track *innertrack,AliL3Track *outertrack){
 306   return IsTrack(innertrack,outertrack);
 307 }
 308
 309 Double_t AliL3Merger::TrackDiff(AliL3Track *innertrack,AliL3Track *outertrack){
 310   Double_t diff =-1;
 311   Double_t x[4],y[4],z[4],dy[4],dz[4];
 312   AliL3Track *tracks[2];
 313
 314   tracks[0] = innertrack;
 315   tracks[1] = outertrack;
 316   SortGlobalTracks(tracks,2);
 317   innertrack = tracks[0];
 318   outertrack = tracks[1];
 319
 320   x[0] = innertrack->GetFirstPointX();
 321   x[1] = innertrack->GetLastPointX();
 322   x[2] = outertrack->GetFirstPointX();
 323   x[3] = outertrack->GetLastPointX();
 324
 325   y[0] = innertrack->GetFirstPointY();
 326   y[1] = innertrack->GetLastPointY();
 327   y[2] = outertrack->GetFirstPointY();
 328   y[3] = outertrack->GetLastPointY();
 329
 330   z[0] = innertrack->GetFirstPointZ();
 331   z[1] = innertrack->GetLastPointZ();
 332   z[2] = outertrack->GetFirstPointZ();
 333   z[3] = outertrack->GetLastPointZ();
 334
 335
 336   outertrack->CalculatePoint(x[0]);
 337   if(!outertrack->IsPoint()) return diff;
 338   dy[0] = fabs(y[0] - outertrack->GetPointY());
 339   dz[0] = fabs(z[0] - outertrack->GetPointZ());
 340
 341   outertrack->CalculatePoint(x[1]);
 342   if(!outertrack->IsPoint()) return diff;
 343   dy[1] = fabs(y[1] - outertrack->GetPointY());
 344   dz[1] = fabs(z[1] - outertrack->GetPointZ());
 345
 346   innertrack->CalculatePoint(x[2]);
 347   if(!innertrack->IsPoint()) return diff;
 348   dy[2] = fabs(y[2] - innertrack->GetPointY());
 349   dz[2] = fabs(z[2] - innertrack->GetPointZ());
 350
 351   innertrack->CalculatePoint(x[3]);
 352   if(!innertrack->IsPoint()) return diff;
 353   dy[3] = fabs(y[3] - innertrack->GetPointY());
 354   dz[3] = fabs(z[3] - innertrack->GetPointZ());
 355
 356   diff=0;
 357   for(Int_t i=0;i<4;i++)
 358     diff+=sqrt(dy[i]*dy[i]+dz[i]*dz[i]);
 359   return diff;
 360 }
 361
 362
 363
 364 void AliL3Merger::PrintDiff(AliL3Track *innertrack,AliL3Track *outertrack){
 365   if(!innertrack->IsPoint()||!outertrack->IsPoint()){
 366     cerr<<"AliL3Merger::PrintDiff: No Points"<<endl;
 367     cerr<<"---------------------------"<<endl;
 368     return;
 369   }
 370   Double_t dx = innertrack->GetPointX()-outertrack->GetPointX();
 371   Double_t dy = innertrack->GetPointY()-outertrack->GetPointY();
 372   Double_t dz = innertrack->GetPointZ()-outertrack->GetPointZ();
 373   Double_t dk = innertrack->GetKappa()-outertrack->GetKappa();
 374     Double_t dpsi= innertrack->GetPointPsi() - outertrack->GetPointPsi();
 375     if(dpsi>PI) dpsi-=2*PI;
 376     if(dpsi<-PI)dpsi+=2*PI;
 377 //  Double_t dpsi = GetAngle(innertrack->GetPointPsi(),outertrack->GetPointPsi());
 378   Double_t dtgl= innertrack->GetTgl()-outertrack->GetTgl();
 379   Double_t dq =innertrack->GetCharge()-outertrack->GetCharge();
 380
 381   fprintf(stderr,"dx: %4f dy: %4f dz: %4f dk: %4f dpsi: %4f dtgl: %4f dq: %4f\n",
 382       dx,dy,dz,dk,dpsi,dtgl,dq);
 383 cerr<<"---------------------------"<<endl;
 384 //  cerr<<endl;
 385
 386 }
 387
 388 void AliL3Merger::Print(){
 389   // print some infos
 390   for(Int_t i=0; i<fNIn; i++){
 391     AliL3TrackArray *ttt= GetInTracks(i);
 392     for(Int_t j =0;j<ttt->GetNTracks();j++){
 393       AliL3Track *track=ttt->GetCheckedTrack(j);
 394       if(!track) continue;
 395       track->CalculateHelix();
 396 //      Double_t angle = atan2(track->GetLastPointY(),track->GetLastPointX());
 397 //      if(angle<0) angle+=PI;
 398       if(track->CalculatePoint(135))
 399 //      if(!track->CalculateEdgePoint(angle)) cerr<<"**************"<<endl;
 400 //      if(track->CalculatePoint(track->GetLastPointX()))
 401 //      if(track->CalculatePoint(0))
 402       {
 403 //      PrintTrack(track);
 404 //      track->CalculateReferencePoint(PI/180.);
 405       track->CalculateReferencePoint(0.001);
 406       fprintf(stderr,"npt: %3d dx: %8.5f dy: %8.5f dz: %8.5f\n",
 407         track->GetNHits(),(float)track->GetPointX()-track->GetPointX(),
 408                           (float)track->GetPointY()-track->GetPointY(),
 409                           (float)track->GetPointZ()-track->GetPointZ());
 410
 411       cerr<<"---------------------------"<<endl;
 412       }
 413     }
 414   }
 415 }
 416
 417 void AliL3Merger::PrintTrack(AliL3Track *track){
 418   fprintf(stderr,"npt: %3d pt: %.2f psi: %.2f tgl: %5.2f q: %2d\n",
 419     track->GetNHits(),track->GetPt(),track->GetPsi(),
 420     track->GetTgl(),track->GetCharge());
 421   fprintf(stderr,
 422     "x1: %6.2f y1: %6.2f z1: %6.2f xl: %6.2f yl: %6.2f zl: %6.2f\n",
 423     track->GetFirstPointX(),track->GetFirstPointY(),track->GetFirstPointZ(),
 424     track->GetLastPointX(),track->GetLastPointY(),track->GetLastPointZ());
 425   if(track->IsPoint()){
 426     fprintf(stderr,
 427       "R: %.2f Xc: %.2f Yc: %.2f Xp: %.2f Yp: %.2f Zp: %.2f Psip: %.2f\n",
 428       track->GetRadius(),track->GetCenterX(),track->GetCenterY(),
 429       track->GetPointX(),track->GetPointY(),track->GetPointZ(),
 430       track->GetPointPsi());
 431   }
 432 }
 433
 434
 435
 436