TRD/AliTRDtrackingSector.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /* $Id: AliTRDtrackingSector.cxx 23810 2008-02-08 09:00:27Z hristov $ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 //  Tracking data container for one sector                                   //
  21 //                                                                           //
  22 //  Authors:                                                                 //
  23 //    Alex Bercuci <A.Bercuci@gsi.de>                                        //
  24 //    Markus Fasel <M.Fasel@gsi.de>                                          //
  25 //                                                                           //
  26 ///////////////////////////////////////////////////////////////////////////////
  27
  28 #include "AliTRDtrackingSector.h"
  29 #include "AliTRDcalibDB.h"
  30 #include "AliTRDCommonParam.h"
  31 #include "AliTRDgeometry.h"
  32 #include "AliTRDpadPlane.h"
  33 #include "AliTRDtrackingChamber.h"
  34
  35 ClassImp(AliTRDtrackingSector)
  36
  37 //_____________________________________________________________________________
  38 AliTRDtrackingSector::AliTRDtrackingSector()
  39   :fSector(-1)
  40   ,fN(0)
  41   ,fGeom(0x0)
  42 {
  43         // Default constructor
  44
  45         for(int ic=0; ic<kNChambersSector; ic++){
  46                 fChamber[ic] = 0x0;
  47                 fIndex[ic]   = -1;
  48         }
  49         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++) fX0[ip] = 0.;
  50 }
  51
  52 //_____________________________________________________________________________
  53 AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs)
  54   :fSector(gs)
  55   ,fN(0)
  56   ,fGeom(geo)
  57 {
  58   //
  59   // AliTRDtrackingSector Constructor
  60   //
  61
  62         for(int ic=0; ic<kNChambersSector; ic++){
  63                 fChamber[ic] = 0x0;
  64                 fIndex[ic]   = -1;
  65         }
  66         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++) fX0[ip] = 0.;
  67 }
  68
  69 //_____________________________________________________________________________
  70 AliTRDtrackingSector::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/)
  71   :fSector(-1)
  72   ,fN(0)
  73   ,fGeom(0x0)
  74 {
  75   //
  76   // Copy constructor
  77   //
  78
  79 }
  80
  81 //_____________________________________________________________________________
  82 AliTRDtrackingSector::~AliTRDtrackingSector()
  83 {
  84   //
  85   // Destructor
  86   //
  87
  88 }
  89
  90 //_____________________________________________________________________________
  91 void AliTRDtrackingSector::Init()
  92 {
  93 //      Steer building of tracking chambers and build tracking sector.
  94 //      Propagate radial position information (calibration/alignment aware) from chambers to sector level
  95 //
  96
  97         AliTRDtrackingChamber *tc = 0x0; int ic = 0;
  98         while((ic<kNChambersSector) && (tc = fChamber[ic++])) tc->Build(fGeom);
  99
 100         Int_t np;
 101         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++){
 102                 fX0[ip] = 0.; np = 0;
 103                 for(int is=0; is<AliTRDgeometry::kNcham; is++){
 104                         Int_t idx = is*AliTRDgeometry::kNplan + ip;
 105                         if(fIndex[idx]<0) continue;
 106                         tc = GetChamber(fIndex[idx]);
 107                         fX0[ip] += tc->GetX(); np++;
 108                 }
 109                 if(!np){
 110                         //printf("Could not estimate radial position  of plane %d in sector %d.\n", ip, fSector);
 111                         continue;
 112                 }
 113                 fX0[ip] /= Float_t(np);
 114         }
 115 }
 116 //_____________________________________________________________________________
 117 void AliTRDtrackingSector::Clear(const Option_t *opt)
 118 {
 119 // Reset counters and steer chamber clear
 120
 121         for(Int_t ich=0; ich<fN; ich++){
 122                 fChamber[ich]->Clear(opt);
 123                 delete fChamber[ich]; fChamber[ich] = 0x0;   // I would avoid
 124         }
 125         for(Int_t ich=0; ich<kNChambersSector; ich++) fIndex[ich] = -1;
 126         fN = 0;
 127 }
 128
 129 //_____________________________________________________________________________
 130 AliTRDtrackingChamber* AliTRDtrackingSector::GetChamber(Int_t stack, Int_t plane, Bool_t build)
 131 {
 132 // Return chamber at position (stack, plane) in current
 133 // sector or build a new one if it is not already created
 134
 135         Int_t ch = stack*AliTRDgeometry::kNplan + plane;
 136         if(fIndex[ch] >= 0) return fChamber[Int_t(fIndex[ch])];
 137         else if(!build) return 0x0;
 138
 139         // CHAMBER HAS TO BE BUILD
 140         Int_t rch = ch;do rch--; while(rch>=0 && fIndex[rch]<0);
 141         fIndex[ch] = rch >=0 ? fIndex[rch]+1 : 0;
 142         fN++;
 143
 144         memmove(&fChamber[Int_t(fIndex[ch])+1], &fChamber[Int_t(fIndex[ch])], (kNChambersSector-fIndex[ch]-1)*sizeof(void*));
 145         for(Int_t ic = ch+1; ic<kNChambersSector; ic++) fIndex[ic] += fIndex[ic] >= 0 ? 1 : 0;
 146
 147         return fChamber[Int_t(fIndex[ch])] = new AliTRDtrackingChamber(AliTRDgeometry::GetDetector(plane, stack, fSector));
 148 }
 149
 150 //_____________________________________________________________________________
 151 AliTRDtrackingChamber** AliTRDtrackingSector::GetStack(Int_t stack)
 152 {
 153 // Return chamber at position (stack, plane) in current
 154 // sector or build a new one if it is not already created
 155
 156         if(stack<0 || stack>=AliTRDgeometry::kNcham) return 0x0;
 157
 158         Int_t ich, n = 0;
 159         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++){
 160                 ich = stack*AliTRDgeometry::kNplan + ip;
 161                 if(fIndex[ich] < 0) fStack[ip] = 0x0;
 162                 else{
 163                         fStack[ip] = fChamber[Int_t(fIndex[ich])];
 164                         n++;
 165                 }
 166         }
 167
 168         return n ? &fStack[0] : 0x0;
 169 }
 170
 171 //_____________________________________________________________________________
 172 void AliTRDtrackingSector::Print(Option_t *)
 173 {
 174 // Dump info about this tracking sector and the tracking chamber within
 175 //
 176
 177         printf("\tSector %2d\n", fSector);
 178         for(int ip=0; ip<6; ip++){
 179                 for(int is =0; is<5; is++){
 180                         Int_t ch = is*AliTRDgeometry::kNplan + ip;
 181                         printf("%2d[%2d] ", fIndex[ch], fIndex[ch]>=0 ? fChamber[Int_t(fIndex[ch])]->GetNClusters() : 0);
 182                 }
 183                 printf("\n");
 184         }
 185
 186 }