CbmKFTrErrMCPoints.cxx

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/* Copyright (C) 2011-2017 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Maksym Zyzak [committer] */
 
/*
 *====================================================================
 *
 *  KF Fit performance 
 *
 *====================================================================
 */
#include "CbmKFTrErrMCPoints.h"
 
#include "CbmKF.h"
#include "CbmMCTrack.h"
#include "CbmStsAddress.h"
#include "CbmStsSetup.h"
 
#include <algorithm>
 
using std::vector;
 
ClassImp(CbmKFTrErrMCPoints);
 
CbmKFTrErrMCPoints::CbmKFTrErrMCPoints() : StsArray(), MvdArray(), TofArray(), StsHitsArray(), MvdHitsArray() {}
 
int CbmKFTrErrMCPoints::GetNConsMCStations()
{
  if ((GetNMvdPoints() + GetNStsPoints()) < 1) {
    return 0;
  }
  // TODO get station number of the point using methods of the point class!
  float zStation[8] = {30., 40., 50., 60., 70., 80., 90., 100.};
  vector<int> iStations;
  // SZh 03.09.2025: Is this code used somewhere?
  //                 GetMvdPoint(iMvd)->GetStationNr() do not return station ID, but sensor ID,
  //                 so this iStations makes no sense in context of tracking.
  for (int iMvd = 0; iMvd < GetNMvdPoints(); ++iMvd) {
    iStations.push_back(GetMvdPoint(iMvd)->GetSensorNr() - 1);
    //    std::cout << GetMvdPoint(iMvd)->GetStationNr() << " " << GetMvdPoint(iMvd)->GetZ() << std::endl;
  }
  for (int iSts = 0; iSts < GetNStsPoints(); ++iSts) {
    int stNumber = -1;
    for (int iSt = 0; iSt < 8; iSt++) {
      if (TMath::Abs(zStation[iSt] - GetStsPoint(iSts)->GetZ()) < 2.5) {
        stNumber = iSt;
      }
    }
    if (stNumber >= 0) {
      iStations.push_back(stNumber + CbmKF::Instance()->GetNMvdStations());
    }
  }
 
  std::sort(iStations.begin(), iStations.end());
 
  int nMaxConsStations = 1;
  int nConsStations    = 1;
  if (iStations.size() == 0) {
    return 0;
  }
  int iPrevSt = iStations[0];
  for (unsigned int iP = 1; iP < iStations.size(); iP++) {
    if ((iStations[iP] - iPrevSt) == 1) {
      nConsStations++;
      iPrevSt = iStations[iP];
    }
    else if ((iStations[iP] - iPrevSt) > 1) {
      if (nConsStations > nMaxConsStations) nMaxConsStations = nConsStations;
      nConsStations = 1;
      iPrevSt       = iStations[iP];
    }
  }
  if (nConsStations > nMaxConsStations) {
    nMaxConsStations = nConsStations;
  }
 
  return nMaxConsStations;
}
 
int CbmKFTrErrMCPoints::GetNConsHitStations()
{
  if ((GetNMvdHits() + GetNStsHits()) < 1) {
    return 0;
  }
  // TODO get station number of the point using methods of the point class!
  vector<int> iStations;
  for (int iMvd = 0; iMvd < GetNMvdHits(); ++iMvd) {
    iStations.push_back(GetMvdHit(iMvd)->GetStationNr() - 1);
    //    std::cout << GetMvdHit(iMvd)->GetStationNr() << " " << GetMvdHit(iMvd)->GetZ() << std::endl;
  }
  for (int iSts = 0; iSts < GetNStsHits(); ++iSts) {
    iStations.push_back(CbmStsSetup::Instance()->GetStationNumber(GetStsHit(iSts)->GetAddress()) - 1
                        + CbmKF::Instance()->GetNMvdStations());
  }
 
  std::sort(iStations.begin(), iStations.end());
 
  int nMaxConsStations = 1;
  int nConsStations    = 1;
  int iPrevSt          = iStations[0];
  for (unsigned int iP = 1; iP < iStations.size(); iP++) {
    if ((iStations[iP] - iPrevSt) == 1) {
      nConsStations++;
      iPrevSt = iStations[iP];
    }
    else if ((iStations[iP] - iPrevSt) > 1) {
      if (nConsStations > nMaxConsStations) {
        nMaxConsStations = nConsStations;
      }
      nConsStations = 1;
      iPrevSt       = iStations[iP];
    }
  }
  if (nConsStations > nMaxConsStations) {
    nMaxConsStations = nConsStations;
  }
 
  return nMaxConsStations;
}
 
int CbmKFTrErrMCPoints::GetNHitStations()
{
  if ((GetNMvdHits() + GetNStsHits()) < 1) {
    return 0;
  }
  // TODO get station number of the point using methods of the point class!
  vector<int> iStations;
  for (int iMvd = 0; iMvd < GetNMvdHits(); ++iMvd) {
    iStations.push_back(GetMvdHit(iMvd)->GetStationNr() - 1);
    //    std::cout << GetMvdHit(iMvd)->GetStationNr() << " " << GetMvdHit(iMvd)->GetZ() << std::endl;
  }
  for (int iSts = 0; iSts < GetNStsHits(); ++iSts) {
    iStations.push_back(CbmStsSetup::Instance()->GetStationNumber(GetStsHit(iSts)->GetAddress()) - 1
                        + CbmKF::Instance()->GetNMvdStations());
  }
  std::sort(iStations.begin(), iStations.end());
 
  int nStations = 1;
  int iPrevSt   = iStations[0];
  for (unsigned int iP = 1; iP < iStations.size(); iP++) {
    if ((iStations[iP] - iPrevSt) >= 1) {
      nStations++;
      iPrevSt = iStations[iP];
    }
  }
 
  return nStations;
}
 
int CbmKFTrErrMCPoints::GetNMaxMCPointsOnStation()
{
  if ((GetNMvdPoints() + GetNStsPoints()) < 1) {
    return 0;
  }
  // TODO get station number of the point using methods of the point class!
  float zStation[8] = {30., 40., 50., 60., 70., 80., 90., 100.};
  vector<int> iStations;
  for (int iMvd = 0; iMvd < GetNMvdPoints(); ++iMvd) {
    // SZh 03.09.2025: Is this code used somewhere?
    //                 GetMvdPoint(iMvd)->GetStationNr() do not return station ID, but sensor ID,
    //                 so this iStations makes no sense in context of tracking.
    iStations.push_back(GetMvdPoint(iMvd)->GetSensorNr() - 1);
    //    std::cout << GetMvdPoint(iMvd)->GetStationNr() << " " << GetMvdPoint(iMvd)->GetZ() << std::endl;
  }
  for (int iSts = 0; iSts < GetNStsPoints(); ++iSts) {
    int stNumber = -1;
    for (int iSt = 0; iSt < 8; iSt++) {
      if (TMath::Abs(zStation[iSt] - GetStsPoint(iSts)->GetZ()) < 2.5) {
        stNumber = iSt;
      }
    }
    if (stNumber >= 0) {
      iStations.push_back(stNumber + CbmKF::Instance()->GetNMvdStations());
    }
  }
 
  std::sort(iStations.begin(), iStations.end());
 
  int nMaxMCPointsOnStation = 1;
  int nMCPointsOnStation    = 1;
  if (iStations.size() == 0) {
    return 0;
  }
  int iPrevSt = iStations[0];
  for (unsigned int iP = 1; iP < iStations.size(); iP++) {
    if ((iStations[iP] - iPrevSt) == 0) {
      nMCPointsOnStation++;
      iPrevSt = iStations[iP];
    }
    else {
      if (nMCPointsOnStation > nMaxMCPointsOnStation) {
        nMaxMCPointsOnStation = nMCPointsOnStation;
      }
      nMCPointsOnStation = 1;
      iPrevSt            = iStations[iP];
    }
  }
 
  return nMaxMCPointsOnStation;
}
 
Bool_t CbmKFTrErrMCPoints::IsReconstructable(CbmMCTrack* mcTr, int MinNStations, int PerformanceMode, float MinRecoMom)
{
  Bool_t f = 1;
 
  // reject very slow tracks from analysis
  f &= (mcTr->GetP() > MinRecoMom);
  // detected at least in 4 stations
  if (PerformanceMode == 3) {
    f &= (GetNConsMCStations() >= MinNStations);  // L1-MC
  }
  if (PerformanceMode == 2) {
    f &= (GetNHitStations() >= MinNStations);  // QA definition
  }
  if (PerformanceMode == 1) {
    f &= (GetNConsHitStations() >= MinNStations);  // L1 definition
  }
 
  // maximul 4 layers for a station.
  f &= (GetNMaxMCPointsOnStation() <= 4);
 
  return f;
}