Adding multiplicity cut (Marek)

[u/mrichter/AliRoot.git] / TRD / AliTRDtrackingSector.cxx

/**************************************************************************\r
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *\r
*                                                                        *\r
* Author: The ALICE Off-line Project.                                    *\r
* Contributors are mentioned in the code where appropriate.              *\r
*                                                                        *\r
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* documentation strictly for non-commercial purposes is hereby granted   *\r
* without fee, provided that the above copyright notice appears in all   *\r
* copies and that both the copyright notice and this permission notice   *\r
* appear in the supporting documentation. The authors make no claims     *\r
* about the suitability of this software for any purpose. It is          *\r
* provided "as is" without express or implied warranty.                  *\r
**************************************************************************/\r
\r
/* $Id: AliTRDtrackingSector.cxx 23810 2008-02-08 09:00:27Z hristov $ */\r
\r
///////////////////////////////////////////////////////////////////////////////\r
//                                                                           //\r
//  Tracking data container for one sector                                   //\r
//                                                                           //\r
//  Authors:                                                                 //\r
//    Alex Bercuci <A.Bercuci@gsi.de>                                        //\r
//    Markus Fasel <M.Fasel@gsi.de>                                          //\r
//                                                                           //\r
///////////////////////////////////////////////////////////////////////////////\r
\r
#include "AliTRDReconstructor.h"\r
#include "AliTRDtrackingSector.h"\r
#include "AliTRDtrackingChamber.h"\r
\r
\r
ClassImp(AliTRDtrackingSector)\r
\r
//_____________________________________________________________________________\r
AliTRDtrackingSector::AliTRDtrackingSector()\r
  :fSector(-1)\r
  ,fN(0)\r
  ,fGeom(NULL)\r
{\r
  // Default constructor\r
  \r
  memset(fChamber, 0, AliTRDgeometry::kNdets*sizeof(AliTRDtrackingChamber*));\r
  memset(fIndex, -1, AliTRDgeometry::kNdets*sizeof(Char_t));\r
  memset(fX0, 0, AliTRDgeometry::kNlayer*sizeof(Float_t));\r
}\r
\r
//_____________________________________________________________________________\r
AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs)\r
  :fSector(gs)\r
  ,fN(0)\r
  ,fGeom(geo)\r
{\r
  //\r
  // AliTRDtrackingSector Constructor\r
  //\r
\r
  memset(fChamber, 0, AliTRDgeometry::kNdets*sizeof(AliTRDtrackingChamber*));\r
  memset(fIndex, -1, AliTRDgeometry::kNdets*sizeof(Char_t));\r
  memset(fX0, 0, AliTRDgeometry::kNlayer*sizeof(Float_t));\r
}\r
\r
    \r
//_____________________________________________________________________________\r
void AliTRDtrackingSector::Init(const AliTRDReconstructor *rec)\r
{		\r
// 	Steer building of tracking chambers and build tracking sector.\r
// 	Propagate radial position information (calibration/alignment aware) from chambers to sector level\r
//\r
  \r
  AliTRDchamberTimeBin *tb = NULL;\r
  AliTRDtrackingChamber **tc = &fChamber[0];\r
  for(Int_t ic = 0; (ic<AliTRDgeometry::kNdets) && (*tc); ic++, tc++){\r
    for(Int_t itb=0; itb<AliTRDseedV1::kNtb; itb++){\r
      if(!(tb = (*tc)->GetTB(itb))) continue;\r
      tb->SetReconstructor(rec);\r
    }\r
    (*tc)->Build(fGeom, rec->IsHLT());\r
  }\r
    \r
  Int_t nl;\r
  for(int il=0; il<AliTRDgeometry::kNlayer; il++){\r
    fX0[il] = 0.; nl = 0;\r
    for(int is=0; is<AliTRDgeometry::kNstack; is++){\r
      Int_t idx = is*AliTRDgeometry::kNlayer + il;\r
      if(fIndex[idx]<0) continue;\r
      fX0[il] += GetChamber(fIndex[idx])->GetX(); \r
      nl++; \r
    }\r
    if(!nl){\r
      //printf("Could not estimate radial position  of plane %d in sector %d.\n", ip, fSector);\r
      continue;\r
    }\r
    fX0[il] /= Float_t(nl);\r
  }\r
}\r
\r
\r
\r
//_____________________________________________________________________________\r
void AliTRDtrackingSector::Clear(const Option_t *opt)\r
{\r
// Reset counters and steer chamber clear\r
\r
  AliTRDtrackingChamber **tc = &fChamber[0];\r
  for(Int_t ich=0; ich<fN; ich++, tc++){ \r
    (*tc)->Clear(opt);\r
    delete (*tc); (*tc) = NULL;   // I would avoid\r
  }	\r
  memset(fIndex, -1, AliTRDgeometry::kNdets*sizeof(Char_t));\r
  fN = 0;\r
}\r
\r
//_____________________________________________________________________________\r
AliTRDtrackingChamber* AliTRDtrackingSector::GetChamber(Int_t stack, Int_t layer, Bool_t build)\r
{\r
// Return chamber at position (stack, plane) in current \r
// sector or build a new one if it is not already created\r
  \r
  Int_t ch = stack*AliTRDgeometry::kNlayer + layer;\r
  if(fIndex[ch] >= 0) return fChamber[Int_t(fIndex[ch])];\r
  else if(!build) return NULL;\r
  \r
  // CHAMBER HAS TO BE BUILD\r
  Int_t rch = ch;do rch--; while(rch>=0 && fIndex[rch]<0);\r
  fIndex[ch] = rch >=0 ? fIndex[rch]+1 : 0; \r
  fN++;\r
  \r
  memmove(&fChamber[Int_t(fIndex[ch])+1], &fChamber[Int_t(fIndex[ch])], (AliTRDgeometry::kNdets-fIndex[ch]-1)*sizeof(void*));\r
  for(Int_t ic = ch+1; ic<AliTRDgeometry::kNdets; ic++) fIndex[ic] += fIndex[ic] >= 0 ? 1 : 0;\r
  \r
  AliTRDtrackingChamber *chmb = fChamber[Int_t(fIndex[ch])] = new AliTRDtrackingChamber();\r
  chmb->SetDetector(AliTRDgeometry::GetDetector(layer, stack, fSector));\r
  return chmb;\r
}\r
\r
//_____________________________________________________________________________\r
AliTRDtrackingChamber** AliTRDtrackingSector::GetStack(Int_t stack)\r
{\r
// Return chamber at position (stack, plane) in current \r
// sector or build a new one if it is not already created\r
  \r
  if(stack<0 || stack>=AliTRDgeometry::kNstack) return NULL;\r
  \r
  Int_t ich, n = 0;\r
  for(int il=0; il<AliTRDgeometry::kNlayer; il++){\r
    ich = stack*AliTRDgeometry::kNlayer + il;\r
    if(fIndex[ich] < 0) fStack[il] = NULL; \r
    else{\r
      fStack[il] = fChamber[Int_t(fIndex[ich])];\r
      n++;\r
    }\r
  }\r
  \r
  return n ? &fStack[0] : NULL;\r
}\r
\r
//_____________________________________________________________________________\r
void AliTRDtrackingSector::Print(Option_t *opt) const\r
{\r
// Dump info about this tracking sector and the tracking chamber within\r
// \r
\r
  printf("\n\tSector[%2d]\n", fSector);\r
  for(int il=0; il<AliTRDgeometry::kNlayer; il++){\r
    for(int is =0; is<AliTRDgeometry::kNstack; is++){\r
      Int_t ch = is*AliTRDgeometry::kNlayer + il;\r
      if(opt) fChamber[Int_t(fIndex[ch])]->Print(opt);\r
      else printf("%2d[%2d] ", fIndex[ch], fIndex[ch]>=0 ? fChamber[Int_t(fIndex[ch])]->GetNClusters() : 0);\r
    }\r
    if(!opt) printf("\n");\r
  }\r
\r
}\r