HLT/hough/AliL3HoughDisplay.cxx

   1 // Author: Anders Vestbo <mailto:vestbo@fi.uib.no>
   2 //*-- Copyright &copy ASV
   3
   4 #include <iostream.h>
   5 #include <TCanvas.h>
   6 #include <TView.h>
   7 #include <TPolyMarker3D.h>
   8 #include <TPolyLine3D.h>
   9 #include <TNode.h>
  10 #include <TGeometry.h>
  11 #include <TShape.h>
  12 #include <TFile.h>
  13
  14 #include "AliL3Transform.h"
  15 #include "AliL3HoughTrack.h"
  16 #include "AliL3TrackArray.h"
  17 #include "AliL3HoughDisplay.h"
  18 #include "AliL3Defs.h"
  19 #include "AliL3MemHandler.h"
  20
  21 //_____________________________________________________________
  22 // Display class for Hough transform code
  23
  24 ClassImp(AliL3HoughDisplay)
  25
  26
  27 AliL3HoughDisplay::AliL3HoughDisplay()
  28 {
  29
  30   fTracks = 0;
  31   fDigitRowData = 0;
  32   fNDigitRowData = 0;
  33   fShowSlice = -1;
  34   fPatch = -1;
  35   Init();
  36 }
  37
  38 AliL3HoughDisplay::~AliL3HoughDisplay()
  39 {
  40 }
  41
  42 void AliL3HoughDisplay::Init()
  43 {
  44   TFile *file = TFile::Open("$(LEVEL3)/GEO/alice.geom");
  45   if(!file->IsOpen())
  46     cerr<<"AliL3HoughDisplay::AliL3HoughDisplay : Geometry file alice.geom does not exist"<<endl;
  47   fGeom = (TGeometry*)file->Get("AliceGeom");
  48   file->Close();
  49 }
  50
  51
  52 void AliL3HoughDisplay::GenerateHits(AliL3HoughTrack *track,Float_t *x,Float_t *y,Float_t *z,Int_t &n)
  53 {
  54   n=0;
  55   Float_t xyz[3];
  56   Int_t slice = track->GetSlice();
  57   for(Int_t i=track->GetFirstRow(); i<track->GetLastRow(); i++)
  58     {
  59       if(track->GetCrossingPoint(i,xyz))
  60         {
  61           AliL3Transform::Local2Global(xyz,slice);
  62           x[n] = xyz[0];
  63           y[n] = xyz[1];
  64           z[n] = xyz[2];
  65           n++;
  66         }
  67       else
  68         break;
  69     }
  70 }
  71
  72 TPolyMarker3D *AliL3HoughDisplay::LoadDigits()
  73 {
  74
  75   AliL3DigitRowData *tempPt = fDigitRowData;
  76   if(!tempPt)
  77     {
  78       cerr<<"AliL3HoughDisplay::LoadDigits : No data"<<endl;
  79       return 0;
  80     }
  81
  82   Int_t nrows = NRows[fPatch][1] - NRows[fPatch][0] + 1;
  83   Int_t count=0;
  84   for(UInt_t i=0; i<nrows; i++)
  85     {
  86       count += tempPt->fNDigit;
  87       AliL3MemHandler::UpdateRowPointer(tempPt);
  88     }
  89   tempPt = fDigitRowData;
  90   TPolyMarker3D *pm = new TPolyMarker3D(count);
  91   Float_t xyz[3];
  92   Int_t sector,row;
  93   count=0;
  94   for(UInt_t i=0; i<nrows; i++)
  95     {
  96       AliL3DigitData *digPt = tempPt->fDigitData;
  97       Int_t padrow = (Int_t)tempPt->fRow;
  98       for(UInt_t j=0; j<tempPt->fNDigit; j++)
  99         {
 100           AliL3Transform::Slice2Sector(fShowSlice,padrow,sector,row);
 101           AliL3Transform::Raw2Global(xyz,sector,row,(Int_t)digPt->fPad,(Int_t)digPt->fTime);
 102           pm->SetPoint(count,xyz[0],xyz[1],xyz[2]);
 103           count++;
 104         }
 105       AliL3MemHandler::UpdateRowPointer(tempPt);
 106     }
 107
 108   cout<<"Displaying "<<count<<" digits"<<endl;
 109   return pm;
 110 }
 111
 112 void AliL3HoughDisplay::DisplayEvent()
 113 {
 114   //Display the found tracks.
 115
 116   if(!fTracks)
 117     {
 118       printf("AliL3HoughDisplay::DisplayTracks() : No tracks\n");
 119       return;
 120     }
 121
 122   TCanvas *c1 = new TCanvas("c1","",700,700);
 123   c1->cd();
 124
 125   TView *v = new TView(1);
 126   v->SetRange(-430,-560,-430,430,560,1710);
 127
 128   c1->Clear();
 129   c1->SetFillColor(1);
 130   c1->SetTheta(90.);
 131   c1->SetPhi(0.);
 132
 133   Int_t ntracks = fTracks->GetNTracks();
 134   TPolyLine3D *line = new TPolyLine3D[ntracks];
 135
 136   Int_t n;
 137   Float_t x[176],y[176],z[176];
 138   for(Int_t j=0; j<ntracks; j++)
 139     {
 140       AliL3HoughTrack *track = (AliL3HoughTrack*)fTracks->GetCheckedTrack(j);
 141       if(!track) continue;
 142       GenerateHits(track,x,y,z,n);
 143       TPolyMarker3D *pm = new TPolyMarker3D(n);
 144       for(Int_t h=0; h<n; h++)
 145         pm->SetPoint(h,x[h],y[h],z[h]);
 146
 147       pm->SetMarkerColor(1);
 148       pm->Draw();
 149       TPolyLine3D *current_line = &(line[j]);
 150       current_line = new TPolyLine3D(n,x,y,z,"");
 151       current_line->SetLineColor(1);
 152       current_line->Draw("same");
 153
 154     }
 155
 156   if(fShowSlice>=0)
 157     {
 158       TPolyMarker3D *pm = LoadDigits();
 159       pm->SetMarkerColor(2);
 160       pm->Draw("same");
 161     }
 162
 163   fGeom->Draw("same");
 164   c1->x3d();
 165 }