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()
  45   ,fTree(0x0)
  46   ,fArray(0x0)
  47 {
  48   InitFunctorList();
  49 }
  50
  51 AliTRDalignmentTask::AliTRDalignmentTask(char* name)
  52   :AliTRDrecoTask(name, "TRD alignment")
  53   ,fTree(0x0)
  54   ,fArray(0x0)
  55 {
  56   InitFunctorList();
  57   DefineOutput(2, TTree::Class());
  58 }
  59
  60 //________________________________________________________
  61 AliTRDalignmentTask::~AliTRDalignmentTask()
  62 {
  63   if (fArray) delete fArray;
  64 }
  65
  66
  67 //________________________________________________________
  68 void AliTRDalignmentTask::UserCreateOutputObjects()
  69 {
  70   // spatial resolution
  71   OpenFile(2, "RECREATE");
  72
  73   fTree = new TTree("spTree", "Tree with track space point arrays");
  74   fTree->Branch("SP","AliTrackPointArray", &fArray);
  75 }
  76
  77
  78 //________________________________________________________
  79 void AliTRDalignmentTask::UserExec(Option_t *opt)
  80 {
  81 // Documentation to come
  82
  83   AliTRDrecoTask::UserExec(opt);
  84   PostData(2, fTree);
  85 }
  86
  87
  88 //________________________________________________________
  89 TH1* AliTRDalignmentTask::PlotTrackPoints(const AliTRDtrackV1 *track)
  90 {
  91 // Documentation to come
  92
  93   if(track) fkTrack = track;
  94   if(!fkTrack){
  95     AliWarning("No Track defined.");
  96     return 0x0;
  97   }
  98
  99   if (fArray) delete fArray;
 100   fArray = new AliTrackPointArray(fkTrack->GetNumberOfTracklets());
 101
 102   // Filling the track points array
 103   Float_t x, y, z;
 104   AliTrackPoint p; Int_t ip = 0;
 105   AliTRDseedV1 *tracklet = 0x0;
 106   for(Int_t il=0; il<AliTRDgeometry::kNlayer; il++){
 107     if(!(tracklet = fkTrack->GetTracklet(il))) continue;
 108     if(!tracklet->IsOK()) continue;
 109     tracklet->Fit(kTRUE);
 110
 111     x = tracklet->GetX0();
 112     y = tracklet->GetYfit(0)-tracklet->GetYfit(1)*(tracklet->GetX0()-x);
 113     z = tracklet->GetZfit(0);
 114     p.SetXYZ(x,y,z);
 115     fArray->AddPoint(ip++, &p);
 116   }
 117   fTree->Fill();
 118
 119 /*  if(fDebugLevel>=1){
 120     Float_t yt = fRim.GetYat(x[il]);
 121     (*fDebugStream) << "TrkltResiduals"
 122       << "layer="  << il
 123       << "x="      <<x[il]
 124       << "y="      <<y[il]
 125       << "yt="     <<yt
 126       << "dydx="   << dydx[il]
 127       << "dy="     << dy
 128       << "\n";
 129   }*/
 130   return 0x0;
 131 }
 132
 133
 134
 135 //________________________________________________________
 136 Bool_t AliTRDalignmentTask::IsIdenticalWithOneOf(AliTrackPoint * const p, AliTrackPointArray *parray, int nmax) {
 137
 138   // Is the point p identical with one of the points on the list parray?
 139   // This is a fix for aliroot 4-16-Rev-01 (and before) writing some
 140   // spurious unitialized points.
 141
 142   for (int i=0; i<parray->GetNPoints() && i<nmax; i++) {
 143     AliTrackPoint pa;
 144     parray->GetPoint(pa,i);
 145     //printf("comparing %7.3f with %7.3f\n",p->GetY(),pa.GetY());
 146     if (p->GetResidual(pa,0)<1e-8) return kTRUE;
 147     //printf("different\n");
 148   }
 149   return kFALSE;
 150 }