PWG1/TRD/AliTRDalignmentTask.cxx

   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-commercialf 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
  16 ///////////////////////////////////////////////
  17 // TRD alignment task
  18 //
  19 // Some documentation
  20 //
  21 // Authors :
  22 //
  23 ////////////////////////////////////////////////
  24
  25 #include "TTreeStream.h"
  26 #include "TROOT.h"
  27 #include "TH1.h"
  28 #include "TH2.h"
  29
  30 #include "AliTrackPointArray.h"
  31 #include "AliLog.h"
  32
  33 #include "AliTRDgeometry.h"
  34 #include "AliTRDcluster.h"
  35 #include "AliTRDseedV1.h"
  36 #include "AliTRDtrackV1.h"
  37
  38 #include "AliTRDalignmentTask.h"
  39
  40 ClassImp(AliTRDalignmentTask)
  41
  42 //________________________________________________________
  43 AliTRDalignmentTask::AliTRDalignmentTask()
  44   :AliTRDrecoTask("Alignment", "TRD alignment")
  45   ,fTree(0x0)
  46   ,fArray(0x0)
  47 {
  48   InitFunctorList();
  49   DefineOutput(1, TTree::Class());
  50
  51 }
  52
  53 //________________________________________________________
  54 AliTRDalignmentTask::~AliTRDalignmentTask()
  55 {
  56   if (fArray) delete fArray;
  57 }
  58
  59
  60 //________________________________________________________
  61 void AliTRDalignmentTask::CreateOutputObjects()
  62 {
  63   // spatial resolution
  64   OpenFile(1, "RECREATE");
  65
  66   fTree = new TTree("spTree", "Tree with track space point arrays");
  67   fTree->Branch("SP","AliTrackPointArray", &fArray);
  68 }
  69
  70
  71 //________________________________________________________
  72 void AliTRDalignmentTask::Exec(Option_t *opt)
  73 {
  74 // Documentation to come
  75
  76   AliTRDrecoTask::Exec(opt);
  77   PostData(1, fTree);
  78 }
  79
  80
  81 //________________________________________________________
  82 TH1* AliTRDalignmentTask::PlotTrackPoints(const AliTRDtrackV1 *track)
  83 {
  84 // Documentation to come
  85
  86   if(track) fkTrack = track;
  87   if(!fkTrack){
  88     AliWarning("No Track defined.");
  89     return 0x0;
  90   }
  91
  92   if (fArray) delete fArray;
  93   fArray = new AliTrackPointArray(fkTrack->GetNumberOfTracklets());
  94
  95   // Filling the track points array
  96   Float_t x, y, z;
  97   AliTrackPoint p; Int_t ip = 0;
  98   AliTRDseedV1 *tracklet = 0x0;
  99   for(Int_t il=0; il<AliTRDgeometry::kNlayer; il++){
 100     if(!(tracklet = fkTrack->GetTracklet(il))) continue;
 101     if(!tracklet->IsOK()) continue;
 102     tracklet->Fit(kTRUE);
 103
 104     x = tracklet->GetX0();
 105     y = tracklet->GetYfit(0)-tracklet->GetYfit(1)*(tracklet->GetX0()-x);
 106     z = tracklet->GetZfit(0);
 107     p.SetXYZ(x,y,z);
 108     fArray->AddPoint(ip++, &p);
 109   }
 110   fTree->Fill();
 111
 112 /*  if(fDebugLevel>=1){
 113     Float_t yt = fRim.GetYat(x[il]);
 114     (*fDebugStream) << "TrkltResiduals"
 115       << "layer="  << il
 116       << "x="      <<x[il]
 117       << "y="      <<y[il]
 118       << "yt="     <<yt
 119       << "dydx="   << dydx[il]
 120       << "dy="     << dy
 121       << "\n";
 122   }*/
 123   return 0x0;
 124 }
 125
 126
 127
 128 //________________________________________________________
 129 Bool_t AliTRDalignmentTask::IsIdenticalWithOneOf(AliTrackPoint * const p, AliTrackPointArray *parray, int nmax) {
 130
 131   // Is the point p identical with one of the points on the list parray?
 132   // This is a fix for aliroot 4-16-Rev-01 (and before) writing some
 133   // spurious unitialized points.
 134
 135   for (int i=0; i<parray->GetNPoints() && i<nmax; i++) {
 136     AliTrackPoint pa;
 137     parray->GetPoint(pa,i);
 138     //printf("comparing %7.3f with %7.3f\n",p->GetY(),pa.GetY());
 139     if (p->GetResidual(pa,0)<1e-8) return kTRUE;
 140     //printf("different\n");
 141   }
 142   return kFALSE;
 143 }