HLT/comp/AliL3Modeller.cxx

   1 //$Id$
   2
   3 // Author: Anders Vestbo <mailto:vestbo$fi.uib.no>
   4 //*-- Copyright &copy ASV
   5
   6 #include <stream.h>
   7 #include <iostream.h>
   8 #include <math.h>
   9
  10 #include "AliL3Modeller.h"
  11 #include "AliL3MemHandler.h"
  12 #include "AliL3TrackArray.h"
  13 #include "AliL3ModelTrack.h"
  14 #include "AliL3DigitData.h"
  15 #include "AliL3Transform.h"
  16
  17 #include "AliL3Defs.h"
  18
  19 ClassImp(AliL3Modeller)
  20
  21 AliL3Modeller::AliL3Modeller()
  22 {
  23   fMemHandler=0;
  24   fTracks=0;
  25   fTransform=0;
  26 }
  27
  28
  29 AliL3Modeller::~AliL3Modeller()
  30 {
  31   if(fMemHandler)
  32     delete fMemHandler;
  33   if(fTracks)
  34     delete fTracks;
  35   if(fTransform)
  36     delete fTransform;
  37
  38 }
  39
  40 void AliL3Modeller::Init(Int_t slice,Int_t patch,Char_t *path)
  41 {
  42   fSlice = slice;
  43   fPatch = patch;
  44   fPadOverlap=4;
  45   fTimeOverlap=4;
  46   fTransform = new AliL3Transform();
  47   fTracks = new AliL3TrackArray("AliL3ModelTrack");
  48
  49   AliL3MemHandler *file = new AliL3MemHandler();
  50   if(!file->SetBinaryInput("tracks.raw"))
  51     {
  52       cerr<<"AliL3Modeller::Init : Error opening trackfile"<<endl;
  53       return;
  54     }
  55   file->Binary2TrackArray(fTracks);
  56   file->CloseBinaryInput();
  57   delete file;
  58
  59   fTracks->QSort();
  60   for(Int_t i=0; i<fTracks->GetNTracks(); i++)
  61     {
  62       AliL3ModelTrack *track = (AliL3ModelTrack*)fTracks->GetCheckedTrack(i);
  63       if(!track) continue;
  64       track->Init(fSlice,fPatch);
  65       track->Rotate(fSlice,kTRUE);
  66       track->CalculateHelix();
  67     }
  68
  69   CalculateCrossingPoints();
  70   CheckForOverlaps();
  71
  72   fMemHandler = new AliL3MemHandler();
  73   Char_t fname[100];
  74   sprintf(fname,"%s/digits_%d_%d.raw",path,fSlice,fPatch);
  75   if(!fMemHandler->SetBinaryInput(fname))
  76     {
  77       cerr<<"AliL3Modeller::Init : Error opening file "<<fname<<endl;
  78       return;
  79     }
  80   UInt_t ndigits;
  81   AliL3DigitRowData *digits=(AliL3DigitRowData*)fMemHandler->CompBinary2Memory(ndigits);
  82
  83   SetInputData(digits);
  84 }
  85
  86 void AliL3Modeller::Process()
  87 {
  88
  89   if(!fTracks)
  90     {
  91       cerr<<"AliL3Modeller::Process : No tracks"<<endl;
  92       return;
  93     }
  94   if(!fRowData)
  95     {
  96       cerr<<"AliL3Modeller::Process : No data "<<endl;
  97       return;
  98     }
  99
 100   AliL3DigitRowData *rowPt = fRowData;
 101   AliL3DigitData *digPt=0;
 102
 103   Int_t ntimes = fTransform->GetNTimeBins()+1;
 104   Int_t npads = fTransform->GetNPads(NRows[fPatch][1])+1;//Max num of pads.
 105   Digit *row = new Digit[(ntimes)*(npads)];
 106
 107   Int_t seq_charge;
 108   Int_t pad,time;
 109   Short_t charge;
 110   Cluster cluster;
 111
 112   for(Int_t i=NRows[fPatch][0]; i<=NRows[fPatch][1]; i++)
 113     {
 114       memset((void*)row,0,ntimes*npads*sizeof(Digit));
 115       digPt = (AliL3DigitData*)rowPt->fDigitData;
 116       for(UInt_t j=0; j<rowPt->fNDigit; j++)
 117         {
 118           pad = digPt[j].fPad;
 119           time = digPt[j].fTime;
 120           charge = digPt[j].fCharge;
 121           row[ntimes*pad+time].fCharge = charge;
 122           row[ntimes*pad+time].fUsed = kFALSE;
 123         }
 124
 125       for(Int_t k=0; k<fTracks->GetNTracks(); k++)
 126         {
 127           AliL3ModelTrack *track = (AliL3ModelTrack*)fTracks->GetCheckedTrack(k);
 128           if(!track) continue;
 129           if(track->GetOverlap()>=0) continue;//Track is overlapping
 130
 131           Int_t hitpad = (Int_t)rint(track->GetPadHit(i));
 132           Int_t hittime = (Int_t)rint(track->GetTimeHit(i));
 133           cout<<"Checking track with pad "<<hitpad<<" time "<<hittime<<endl;
 134           pad = hitpad;
 135           time = hittime;
 136           Int_t padsign=-1;
 137           Int_t timesign=-1;
 138
 139           memset(&cluster,0,sizeof(Cluster));
 140
 141           while(1)//Process this padrow
 142             {
 143               seq_charge=0;
 144               timesign=-1;
 145               time = hittime;
 146               while(1) //Process sequence on this pad:
 147                 {
 148                   charge = row[ntimes*pad+time].fCharge;
 149                   if(charge==0 && timesign==-1)
 150                     {time=hittime+1; timesign=1; continue;}
 151                   else if(charge==0 && timesign==1)
 152                     break;
 153                   //cout<<"Doing pad "<<pad<<" time "<<time<<" charge "<<charge<<endl;
 154
 155                   seq_charge += charge;
 156
 157                   cluster.fTime += time*charge;
 158                   cluster.fPad += pad*charge;
 159                   cluster.fCharge += charge;
 160                   cluster.fSigmaY2 += pad*pad*charge;
 161                   cluster.fSigmaZ2 += time*time*charge;
 162
 163                   row[ntimes*pad+time].fUsed = kTRUE;
 164                   time += timesign;
 165                 }
 166               cout<<"Finished on pad "<<pad<<" and time "<<time<<endl;
 167               if(seq_charge)
 168                 pad += padsign;
 169
 170               else //Nothing more on this pad, goto next pad
 171                 {
 172                   if(padsign==-1)
 173                     {pad=hitpad+1; padsign=1; continue;}
 174                   else //Nothing more in this cluster
 175                     {
 176                       Float_t fcharge = (Float_t)cluster.fCharge;
 177                       Float_t fpad = ((Float_t)cluster.fPad/fcharge);
 178                       Float_t ftime = ((Float_t)cluster.fTime/fcharge);
 179                       Float_t sigmaY2,sigmaZ2;
 180                       CalcClusterWidth(&cluster,sigmaY2,sigmaZ2);
 181                       //cout<<"row "<<i<<" pad "<<dpad<<endl;
 182                       track->SetCluster(fpad,ftime,fcharge,sigmaY2,sigmaZ2);
 183                       break;
 184                     }
 185                 }
 186               // pad += padsign;
 187             }
 188         }
 189       fMemHandler->UpdateRowPointer(rowPt);
 190
 191     }
 192   delete [] row;
 193
 194 }
 195
 196 void AliL3Modeller::CalculateCrossingPoints()
 197 {
 198   cout<<"Calculating crossing points on "<<fTracks->GetNTracks()<<" tracks"<<endl;
 199   if(!fTracks)
 200     {
 201       cerr<<"AliL3Modeller::CalculateCrossingPoints(): No tracks"<<endl;
 202       return;
 203     }
 204   Float_t hit[3];
 205   for(Int_t i=NRows[fPatch][0]; i<NRows[fPatch][1]; i++)
 206     {
 207       for(Int_t j=0; j<fTracks->GetNTracks(); j++)
 208         {
 209           AliL3ModelTrack *track = (AliL3ModelTrack*)fTracks->GetCheckedTrack(j);
 210           if(!track) continue;
 211           //if(!track->GetCrossingPoint(i,hit))
 212           // fTracks->Remove(j); //Track is bending out.
 213           track->CalculatePoint(fTransform->Row2X(i));
 214           if(!track->IsPoint())
 215             {
 216               fTracks->Remove(j);
 217               continue;
 218             }
 219           hit[1]=track->GetPointY();
 220           hit[2]=track->GetPointZ();
 221           fTransform->Local2Raw(hit,fSlice,i);
 222           track->SetPadHit(i,hit[1]);
 223           track->SetTimeHit(i,hit[2]);
 224           //if(hit[1]<0 || hit[2]>445)
 225           cout<<"pad "<<hit[1]<<" time "<<hit[2]<<" pt "<<track->GetPt()<<" psi "<<track->GetPsi()<<" tgl "<<track->GetTgl()<<" firstpoint "<<track->GetFirstPointX()<<" "<<track->GetFirstPointY()<<" "<<track->GetFirstPointZ()<<endl;
 226           //cout<<"Crossing pad "<<hit[1]<<" time "<<hit[2]<<endl;
 227         }
 228     }
 229   fTracks->Compress();
 230   cout<<"And there are "<<fTracks->GetNTracks()<<" tracks remaining"<<endl;
 231 }
 232
 233 void AliL3Modeller::CheckForOverlaps()
 234 {
 235   //Flag the tracks that overlap
 236
 237   cout<<"Checking for overlaps"<<endl;
 238
 239   for(Int_t i=0; i<fTracks->GetNTracks(); i++)
 240     {
 241       AliL3ModelTrack *track1 = (AliL3ModelTrack*)fTracks->GetCheckedTrack(i);
 242       if(!track1) continue;
 243       for(Int_t j=i+1; j<fTracks->GetNTracks(); j++)
 244         {
 245           AliL3ModelTrack *track2 = (AliL3ModelTrack*)fTracks->GetCheckedTrack(j);
 246           if(!track2) continue;
 247           for(Int_t k=NRows[fPatch][0]; k<NRows[fPatch][1]; k++)
 248             {
 249               if(fabs(track1->GetPadHit(k)-track2->GetPadHit(k)) < fPadOverlap &&
 250                  fabs(track1->GetTimeHit(k)-track2->GetTimeHit(k)) < fTimeOverlap)
 251                 {
 252                   track1->SetOverlap(j);
 253                   track2->SetOverlap(i);
 254                 }
 255             }
 256         }
 257     }
 258
 259 }
 260
 261
 262 void AliL3Modeller::CalcClusterWidth(Cluster *cl,Float_t &sigmaY2,Float_t &sigmaZ2)
 263 {
 264
 265   Float_t padw,timew;
 266   if(fPatch < 3)
 267     padw = fTransform->GetPadPitchWidthLow();
 268   else
 269     padw = fTransform->GetPadPitchWidthUp();
 270   Float_t charge = (Float_t)cl->fCharge;
 271   Float_t pad = (Float_t)cl->fPad/charge;
 272   Float_t time = (Float_t)cl->fTime/charge;
 273   Float_t s2 = (Float_t)cl->fSigmaY2/charge - pad*pad;
 274   sigmaY2 = (s2 + 1./12)*padw*padw;
 275
 276   if(s2 != 0)
 277     {
 278       sigmaY2 = sigmaY2*0.108;
 279       if(fPatch<3)
 280         sigmaY2 = sigmaY2*2.07;
 281     }
 282
 283   s2 = (Float_t)cl->fSigmaZ2/charge - time*time;
 284   timew = fTransform->GetZWidth();
 285   sigmaZ2 = (s2 +1./12)*timew*timew;
 286   if(s2 != 0)
 287     {
 288       sigmaZ2 = sigmaZ2*0.169;
 289       if(fPatch < 3)
 290         sigmaZ2 = sigmaZ2*1.77;
 291     }
 292
 293 }