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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   6  *                                                                        *
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  10  * copies and that both the copyright notice and this permission notice   *
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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   :fTimeBinsPerPlane(0)
  40   ,fSector(-1)
  41   ,fN(0)
  42   ,fGeom(0x0)
  43 {
  44         // Default constructor
  45
  46         for(int ic=0; ic<kNChambersSector; ic++){
  47                 fChamber[ic] = 0x0;
  48                 fIndex[ic]   = -1;
  49         }
  50         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++) fX0[ip] = 0.;
  51 }
  52
  53 //_____________________________________________________________________________
  54 AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs, Int_t tb)
  55   :fTimeBinsPerPlane(tb)
  56   ,fSector(gs)
  57   ,fN(0)
  58   ,fGeom(geo)
  59 {
  60   //
  61   // AliTRDtrackingSector Constructor
  62   //
  63
  64         for(int ic=0; ic<kNChambersSector; ic++){
  65                 fChamber[ic] = 0x0;
  66                 fIndex[ic]   = -1;
  67         }
  68         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++) fX0[ip] = 0.;
  69 }
  70
  71 //_____________________________________________________________________________
  72 AliTRDtrackingSector::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/)
  73   :fTimeBinsPerPlane(0)
  74   ,fSector(-1)
  75   ,fN(0)
  76   ,fGeom(0x0)
  77 {
  78   //
  79   // Copy constructor
  80   //
  81
  82 }
  83
  84 //_____________________________________________________________________________
  85 AliTRDtrackingSector::~AliTRDtrackingSector()
  86 {
  87   //
  88   // Destructor
  89   //
  90
  91 }
  92
  93 //_____________________________________________________________________________
  94 void AliTRDtrackingSector::Init()
  95 {
  96 //      Steer building of tracking chambers and build tracking sector.
  97 //      Propagate radial position information (calibration/alignment aware) from chambers to sector level
  98 //
  99
 100         AliTRDtrackingChamber *tc = 0x0; int ic = 0;
 101         while((tc = fChamber[ic++])) tc->Build(fGeom);
 102
 103         Int_t np;
 104         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++){
 105                 fX0[ip] = 0.; np = 0;
 106                 for(int is=0; is<AliTRDgeometry::kNcham; is++){
 107                         Int_t idx = is*AliTRDgeometry::kNplan + ip;
 108                         if(fIndex[idx]<0) continue;
 109                         tc = GetChamber(fIndex[idx]);
 110                         fX0[ip] += tc->GetX(); np++;
 111                 }
 112                 if(!np){
 113                         //printf("Could not estimate radial position  of plane %d in sector %d.\n", ip, fSector);
 114                         continue;
 115                 }
 116                 fX0[ip] /= Float_t(np);
 117         }
 118 }
 119 //_____________________________________________________________________________
 120 void AliTRDtrackingSector::Clear(const Option_t *opt)
 121 {
 122 // Reset counters and steer chamber clear
 123
 124         for(Int_t ich=0; ich<fN; ich++){
 125                 fChamber[ich]->Clear(opt);
 126                 delete fChamber[ich]; fChamber[ich] = 0x0;   // I would avoid
 127         }
 128         for(Int_t ich=0; ich<kNChambersSector; ich++) fIndex[ich] = -1;
 129         fN = 0;
 130 }
 131
 132 //_____________________________________________________________________________
 133 AliTRDtrackingChamber* AliTRDtrackingSector::GetChamber(Int_t stack, Int_t plane, Bool_t build)
 134 {
 135 // Return chamber at position (stack, plane) in current
 136 // sector or build a new one if it is not already created
 137
 138         Int_t ch = stack*AliTRDgeometry::kNplan + plane;
 139         if(fIndex[ch] >= 0) return fChamber[Int_t(fIndex[ch])];
 140         else if(!build) return 0x0;
 141
 142         // CHAMBER HAS TO BE BUILD
 143         Int_t rch = ch;do rch--; while(rch>=0 && fIndex[rch]<0);
 144         fIndex[ch] = rch >=0 ? fIndex[rch]+1 : 0;
 145         fN++;
 146
 147         memmove(&fChamber[Int_t(fIndex[ch])+1], &fChamber[Int_t(fIndex[ch])], (kNChambersSector-fIndex[ch]-1)*sizeof(void*));
 148         for(Int_t ic = ch+1; ic<kNChambersSector; ic++) fIndex[ic] += fIndex[ic] >= 0 ? 1 : 0;
 149
 150         return fChamber[Int_t(fIndex[ch])] = new AliTRDtrackingChamber(AliTRDgeometry::GetDetector(plane, stack, fSector));
 151 }
 152
 153 //_____________________________________________________________________________
 154 AliTRDtrackingChamber** AliTRDtrackingSector::GetStack(Int_t stack)
 155 {
 156 // Return chamber at position (stack, plane) in current
 157 // sector or build a new one if it is not already created
 158
 159         if(stack<0 || stack>=AliTRDgeometry::kNcham) return 0x0;
 160
 161         Int_t ich, n = 0;
 162         for(int ip=0; ip<AliTRDgeometry::kNplan; ip++){
 163                 ich = stack*AliTRDgeometry::kNplan + ip;
 164                 if(fIndex[ich] < 0) fStack[ip] = 0x0;
 165                 else{
 166                         fStack[ip] = fChamber[Int_t(fIndex[ich])];
 167                         n++;
 168                 }
 169         }
 170
 171         return n ? &fStack[0] : 0x0;
 172 }
 173
 174 //_____________________________________________________________________________
 175 void AliTRDtrackingSector::Print(Option_t *)
 176 {
 177 // Dump info about this tracking sector and the tracking chamber within
 178 //
 179
 180         printf("\tSector %2d\n", fSector);
 181         for(int ip=0; ip<6; ip++){
 182                 for(int is =0; is<5; is++){
 183                         Int_t ch = is*AliTRDgeometry::kNplan + ip;
 184                         printf("%2d[%2d] ", fIndex[ch], fIndex[ch]>=0 ? fChamber[Int_t(fIndex[ch])]->GetNClusters() : 0);
 185                 }
 186                 printf("\n");
 187         }
 188
 189 }