CbmTrdParModDigi.cxx

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/* Copyright (C) 2018-2024 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Florian Uhlig [committer], Alexandru Bercuci */
 
#include "CbmTrdParModDigi.h"
 
#include "CbmTrdAddress.h"  // for CbmTrdAddress
#include "CbmTrdPoint.h"    // for CbmTrdPoint
 
#include <Logger.h>  // for LOG, Severity, Severity::debug2
 
#include <TGeoManager.h>  // for TGeoManager, gGeoManager
#include <TString.h>      // for TString
#include <TVector3.h>     // for TVector3
 
#include <cmath>    // for fabs
#include <cstdio>   // for printf
#include <cstring>  // for strcmp
#include <iomanip>  // for setprecision, __iom_t5
 
using namespace cbm::trd;
 
//___________________________________________________________________
CbmTrdParModDigi::CbmTrdParModDigi()
  : CbmTrdParMod("CbmTrdParModDigi", "TRD read-out definition")
  , fNofSectors(1)
  , fOrientation(0)
  , fAnodeWireOffset(0.375)
  , fAnodeWireSpacing(0.25)
  , fAnodeWireToPadPlaneDistance(0.35)
  , fX(0.)
  , fY(0.)
  , fZ(0.)
  , fSizeX(0)
  , fSizeY(0)
  , fSizeZ(0)
  , fSectorX()
  , fSectorY()
  , fSectorZ()
  , fSectorBeginX()
  , fSectorBeginY()
  , fSectorEndX()
  , fSectorEndY()
  , fSectorSizeX()
  , fSectorSizeY()
  , fPadSizeX()
  , fPadSizeY()
{
}
//___________________________________________________________________
CbmTrdParModDigi::CbmTrdParModDigi(Double_t x, Double_t y, Double_t z, Double_t sizex, Double_t sizey, Double_t sizez,
                                   Int_t nofSectors, Int_t orientation, const TArrayD& sectorSizeX,
                                   const TArrayD& sectorSizeY, const TArrayD& padSizeX, const TArrayD& padSizeY)
  : CbmTrdParMod("CbmTrdParModDigi", "TRD read-out definition")
  , fNofSectors(nofSectors)
  , fOrientation(orientation)
  , fAnodeWireOffset(0.375)
  , fAnodeWireSpacing(0.25)
  , fAnodeWireToPadPlaneDistance(0.35)
  , fX(x)
  , fY(y)
  , fZ(z)
  , fSizeX(sizex)
  , fSizeY(sizey)
  , fSizeZ(sizez)
  , fSectorX(nofSectors)
  , fSectorY(nofSectors)
  , fSectorZ(nofSectors)
  , fSectorBeginX(nofSectors)
  , fSectorBeginY(nofSectors)
  , fSectorEndX(nofSectors)
  , fSectorEndY(nofSectors)
  , fSectorSizeX(sectorSizeX)
  , fSectorSizeY(sectorSizeY)
  , fPadSizeX(padSizeX)
  , fPadSizeY(padSizeY)
{
  if (nofSectors > 1) {
    Double_t beginx, beginy, endx, endy;
    Double_t summed_sectsize;
    if (sectorSizeX.GetAt(0) == 2 * sizex) {  //substructure only in y-direction
      beginx          = 0;
      endx            = 2 * sizex;
      summed_sectsize = 0;
      for (Int_t i = 0; i < fNofSectors; i++) {
        if (0 == i) {
          beginy = 0.;
          endy   = sectorSizeY.GetAt(i);
          summed_sectsize += sectorSizeY.GetAt(i);
        }
        else {
          beginy = summed_sectsize;
          endy   = summed_sectsize += sectorSizeY.GetAt(i);
        }
        fSectorBeginX.AddAt(beginx, i);
        fSectorBeginY.AddAt(beginy, i);
        fSectorEndX.AddAt(endx, i);
        fSectorEndY.AddAt(endy, i);
        fSectorX.AddAt(beginx + (sectorSizeX.GetAt(i) / 2.), i);
        fSectorY.AddAt(beginy + (sectorSizeY.GetAt(i) / 2.), i);
        fSectorZ.AddAt(fZ, i);
      }
    }
    else {
      LOG(warn) << GetName()
                << "::CbmTrdParModDigi - detect different information on "
                   "module size x : geometry="
                << std::setprecision(5) << 2 * sizex << " CbmTrdPads.h=" << sectorSizeX.GetAt(0);
      beginy          = 0;
      endy            = 2 * sizey;
      summed_sectsize = 0;
      for (Int_t i = 0; i < fNofSectors; i++) {
        if (0 == i) {
          beginx = 0.;
          endx   = sectorSizeX.GetAt(i);
          summed_sectsize += sectorSizeX.GetAt(i);
        }
        else {
          beginx = summed_sectsize;
          endx   = summed_sectsize += sectorSizeX.GetAt(i);
        }
        fSectorBeginX.AddAt(beginx, i);
        fSectorBeginY.AddAt(beginy, i);
        fSectorEndX.AddAt(endx, i);
        fSectorEndY.AddAt(endy, i);
        fSectorX.AddAt(beginx + (sectorSizeX.GetAt(i) / 2.), i);
        fSectorY.AddAt(beginy + (sectorSizeY.GetAt(i) / 2.), i);
        fSectorZ.AddAt(fZ, i);
      }
    }
  }
  else {
    fSectorBeginX.AddAt(0., 0);
    fSectorBeginY.AddAt(0., 0);
    fSectorEndX.AddAt(sectorSizeX.GetAt(0), 0);
    fSectorEndY.AddAt(sectorSizeY.GetAt(0), 0);
    fSectorX.AddAt(x, 0);
    fSectorY.AddAt(y, 0);
    fSectorZ.AddAt(z, 0);
  }
}
 
//___________________________________________________________________________
void CbmTrdParModDigi::Print(Option_t* opt) const
{
  printf(" CbmTrdParModDigi @ %5d ly[%d] idLy[%3d] rotation[%3ddeg] rows[%2d] "
         "cols[%3d]\n",
         fModuleId, CbmTrdAddress::GetLayerId(fModuleId), CbmTrdAddress::GetModuleId(fModuleId), fOrientation * 90,
         GetNofRows(), GetNofColumns());
  if (strcmp(opt, "all") != 0) return;
  printf("        center   [%7.2f %7.2f %7.2f]\n"
         "        size     [%7.2f %7.2f %7.2f]\n"
         "        anode    pitch[%5.3f] d2PP[%5.3f] off[%5.3f]\n"
         "        pads    ",
         fX, fY, fZ, fSizeX, fSizeY, fSizeZ, fAnodeWireSpacing, fAnodeWireToPadPlaneDistance, fAnodeWireOffset);
  for (Int_t isec(0); isec < fNofSectors; isec++)
    printf(" [c(%3d) r(%2d)]x[w(%4.2f) h(%5.2f)] area[%5.2fx%5.2f] limits "
           "x[%5.2f %5.2f] y[%5.2f %5.2f]\n                ",
           GetNofColumnsInSector(isec), GetNofRowsInSector(isec), fPadSizeX.At(isec), fPadSizeY.At(isec),
           fSectorSizeX[isec], fSectorSizeY[isec], fSectorBeginX[isec], fSectorEndX[isec], fSectorBeginY[isec],
           fSectorEndY[isec]);
  printf("\n");
}
 
//___________________________________________________________________________
void CbmTrdParModDigi::ProjectPositionToNextAnodeWire(Double_t* local_point) const
{
 
  if (/*fAnodeWireOffset > 0.0 && */ fAnodeWireSpacing > 0.0) {  // wires must be defined defined
 
    // check, if the input is within the allowed range
    if (fabs(local_point[1]) - fSizeY > 1.e-3)
      LOG(error) << "CbmTrdParModDigi::ProjectPositionToNextAnodeWire - local "
                    "point must be within gas volume, y="
                 << std::setprecision(5) << local_point[1] << " module size " << fSizeY;
 
    Double_t ypos = local_point[1];
 
    LOG(debug2) << "local y before projection: " << std::setprecision(5) << local_point[1] << " cm";
 
    // make sure, local_point[1] is not negative (due to module center coordinate)
    // therefore transform to local corner first and then back at the end of operation
    local_point[1] += fSizeY;  // transform to module corner coordinates
 
    local_point[1] = Int_t(((local_point[1] - fAnodeWireOffset) / fAnodeWireSpacing) + 0.5) * fAnodeWireSpacing
                     + fAnodeWireOffset;  // find closest anode wire
 
    if (local_point[1] > 2 * fSizeY - fAnodeWireOffset)
      local_point[1] = 2 * fSizeY - fAnodeWireOffset;  // move inwards to the last anode wire
 
    local_point[1] -= fSizeY;  // transform back to module center coordinates
 
    LOG(debug2) << "local y after  projection: " << std::setprecision(5) << local_point[1] << " cm";
 
    // check, if we have left the anode wire grid
    if (fabs(local_point[1]) > fSizeY - fAnodeWireOffset)
      LOG(error) << "CbmTrdParModDigi::ProjectPositionToNextAnodeWire - local "
                    "point projected outside anode wire plane, from "
                 << std::setprecision(5) << ypos << " to " << std::setprecision(5) << local_point[1]
                 << " - last anode wire at " << std::setprecision(5) << fSizeY - fAnodeWireOffset;
  }
  else {
    LOG(error) << "CbmTrdParModDigi::ProjectPositionToNextAnodeWire: "
                  "fAnodeWireOffset and fAnodeWireSpacing not set. "
                  "ProjectPositionToNextAnodeWire can not be used.";
  }
}
 
//___________________________________________________________________________
int CbmTrdParModDigi::GetPadPlaneType() const
{
  if (fVersion == 0) return -1;  // legacy parameters
  return int(HasPadPlane2D(fConfig));
}
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetSector(const Double_t* local_point) const
{
 
  Double_t posx, posy;
 
  TransformToLocalCorner(local_point, posx, posy);
  for (Int_t i = 0; i < fNofSectors; i++) {
    if (posx >= fSectorBeginX[i] && posx <= fSectorEndX[i] && posy >= fSectorBeginY[i] && posy <= fSectorEndY[i]) {
      return i;
    }
  }
 
  LOG(error) << "CbmTrdParModDigi::GetSector: Could not find local point [" << local_point[0] << " " << local_point[1]
             << "] in any of the sectors";
  Print("all");
  return -1;  // This should be never reached
}
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetSector(Int_t npady, Int_t& rowId) const
{
 
  if ((npady < 0) || (npady > GetNofRows() - 1)) {
    LOG(error) << "CbmTrdParModDigi::GetSector - there is no such row number: " << npady;
    return -1;
  }
 
  Int_t secRows = 0;  // number of rows in sector
  Int_t nofRows = 0;  // number of rows in total
 
  if (fSectorSizeY.At(0) < fSizeY) {                                              // if there are sectors in y direction
    for (Int_t iSector = 0; iSector < fNofSectors; iSector++) {                   // for each sector
      secRows = (Int_t)(fSectorSizeY.At(iSector) / fPadSizeY.At(iSector) + 0.5);  // need to round for correct result
      if (npady < nofRows + secRows) {  // if we are in the sector containing the pad
        // note nypad = 12 is not in sector 0, with rowIds 0..11
        rowId = npady - nofRows;
 
        LOG(debug2) << "npady   : " << npady << " <= " << nofRows + secRows << "  rowId " << rowId << "  nRows(sec-1) "
                    << nofRows << "  sec " << iSector;
 
        if ((rowId < 0) || (rowId > GetNofRowsInSector(iSector) - 1))
          LOG(fatal) << "CbmTrdParModDigi::GetModuleRow rowId " << rowId << " of "
                     << GetNofRowsInSector(iSector) - 1
                     //<< " in moduleAddress " << fModuleAddress
                     << " is out of bounds!";
 
        return iSector;  // return sector
      }
      nofRows += secRows;  // sum up new total number of rows
    }
  }
  LOG(error) << "CbmTrdParModDigi::GetSector: Could not find pad in any of the sectors";
  return -1;  // This should be never reached
}
 
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetNofColumns() const
{
 
  Int_t nofColumns = 0;
  if (fSectorSizeX.At(0) < fSizeX) {
    for (Int_t i = 0; i < fNofSectors; i++) {
      nofColumns += (Int_t)(fSectorSizeX.At(i) / fPadSizeX.At(i) + 0.5);  // need to round for correct result
    }
  }
  else {
    nofColumns = (Int_t)(fSectorSizeX.At(0) / fPadSizeX.At(0) + 0.5);  // need to round for correct result
  }
  return nofColumns;
}
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetNofRows() const
{
  Int_t nofRows = 0;
  if (fSectorSizeY.At(0) < fSizeY) {
    for (Int_t i = 0; i < fNofSectors; i++) {
      nofRows += (Int_t)(fSectorSizeY.At(i) / fPadSizeY.At(i) + 0.5);  // need to round for correct result
    }
  }
  else {
    nofRows = (Int_t)(fSectorSizeY.At(0) / fPadSizeY.At(0) + 0.5);  // need to round for correct result
  }
  return nofRows;
}
 
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetNofColumnsInSector(Int_t i) const
{
  return (Int_t)(fSectorSizeX.At(i) / fPadSizeX.At(i) + 0.5);  // need to round for correct result
}
 
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetNofRowsInSector(Int_t i) const
{
  return (Int_t)(fSectorSizeY.At(i) / fPadSizeY.At(i) + 0.5);  // need to round for correct result
}
 
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetModuleRow(Int_t& sectorId, Int_t& rowId) const
{
 
  // check limits
  if ((sectorId < 0) || (sectorId > GetNofSectors() - 1))
    LOG(fatal) << "CbmTrdParModDigi::GetModuleRow sectorId " << sectorId << " of "
               << GetNofSectors() - 1
               //<< " in moduleAddress " << fModuleAddress
               << " is out of bounds!";
 
  // check limits
  if ((rowId < 0) || (rowId > GetNofRowsInSector(sectorId) - 1))
    LOG(fatal) << "CbmTrdParModDigi::GetModuleRow rowId " << rowId << " of "
               << GetNofRowsInSector(sectorId) - 1
               //<< " in moduleAddress " << fModuleAddress
               << " is out of bounds!";
 
  Int_t moduleRowId = rowId;
 
  // calculate row number within module
  for (Int_t iSector = 0; iSector < sectorId; iSector++) {
    moduleRowId += (Int_t)(fSectorSizeY.At(iSector) / fPadSizeY.At(iSector) + 0.5);
    //     LOG(info) << "adding sector "   << iSector << " of " << sectorId;
  }
 
  //   if (sectorId == 0)
  //     // do nothing
  //   if (sectorId >= 1)
  //     moduleRowId += (Int_t)(fSectorSizeY.At(0) / fPadSizeY.At(0) + 0.5);
  //   if (sectorId >= 2)
  //     moduleRowId += (Int_t)(fSectorSizeY.At(1) / fPadSizeY.At(1) + 0.5);
 
  return moduleRowId;
}
 
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetSectorRow(Int_t growId, Int_t& rowId) const
{
  // check limits
  if ((growId < 0) || (growId >= GetNofRows()))
    LOG(fatal) << "CbmTrdParModDigi::GetSectorRow rowId " << growId << " of "
               << GetNofRows()
               //<< " in moduleAddress " << fModuleAddress
               << " is out of bounds!";
 
  rowId = growId;
 
  // calculate row number within sector
  Int_t iSector(0);
  for (; iSector < 3; iSector++) {
    Int_t nr(GetNofRowsInSector(iSector));
    if (rowId - nr + 1 > 0) rowId -= nr;
    else
      break;
  }
 
  return iSector;
}
 
 
//___________________________________________________________________________
Bool_t CbmTrdParModDigi::GetPadInfo(const Double_t* local_point, Int_t& sectorId, Int_t& columnId, Int_t& rowId) const
{
  // check, if the input is within the allowed range
  if (fabs(local_point[0]) > fSizeX) {
    LOG(warn) << "CbmTrdParModDigi::GetPadInfo - local point x must be within "
                 "gas volume, x="
              << std::setprecision(8) << local_point[0] << " fSizeX=" << std::setprecision(8) << fSizeX;
    return kFALSE;
  }
  if (fabs(local_point[1]) > fSizeY) {
    LOG(warn) << "CbmTrdParModDigi::GetPadInfo - local point y must be within "
                 "gas volume, y="
              << std::setprecision(8) << local_point[1] << " fSizeY=" << std::setprecision(8) << fSizeY;
    return kFALSE;
  }
 
  Double_t posX, posY;
  TransformToLocalSector(local_point, posX, posY);
 
  // calculate in which sector the point is
  sectorId = GetSector(local_point);
 
  columnId = (Int_t)(posX / fPadSizeX.At(sectorId));
  rowId    = (Int_t)(posY / fPadSizeY.At(sectorId));
 
  return kTRUE;
}
 
//___________________________________________________________________________
void CbmTrdParModDigi::GetPadInfo(const CbmTrdPoint* trdPoint, Int_t& sectorId, Int_t& columnId, Int_t& rowId) const
{
  Double_t x_mean = 0.5 * (trdPoint->GetXIn() + trdPoint->GetXOut());
  Double_t y_mean = 0.5 * (trdPoint->GetYIn() + trdPoint->GetYOut());
  Double_t z_mean = 0.5 * (trdPoint->GetZIn() + trdPoint->GetZOut());
  gGeoManager->FindNode(x_mean, y_mean, z_mean);
 
  TString curNode = gGeoManager->GetPath();
  if (!curNode.Contains("gas")) {
    // if the point is not in the gas volume print warning
    LOG(warn) << "This point is not in the trd gas";
    /*
    LOG(warn) << "x: " << std::setprecision(7) << trdPoint->GetXIn() << ", " << trdPoint->GetXOut();
    LOG(warn) << "y: " << std::setprecision(7) << trdPoint->GetYIn() << ", " << trdPoint->GetYOut();
    LOG(warn) << "z: " << std::setprecision(7) << trdPoint->GetZIn() << ", " << trdPoint->GetZOut();
    */
    sectorId = -1;
    return;
  }
 
  // Get the local point in local MC coordinates from
  // the geomanager. This coordinate system is rotated
  // if the chamber is rotated. This is corrected in
  // GetModuleInformation to have a
  // the same local coordinate system in all the chambers
  const Double_t* global_point = gGeoManager->GetCurrentPoint();
  Double_t local_point[3];
 
  gGeoManager->MasterToLocal(global_point, local_point);
 
  // 20131009 - DE - debuging output to check module orientation 0,1,2,3 with box generator
  if (fair::Logger::Logging(fair::Severity::debug2)) {
    // print module orientation
    LOG(debug2) << "module orientation: " << std::setprecision(5) << fOrientation;
 
    // print global coordinate
    LOG(debug2) << "global x: " << std::setprecision(5) << global_point[0] << " y: " << std::setprecision(5)
                << global_point[1] << " z: " << std::setprecision(5) << global_point[2];
 
    // print local coordinate - relative to module center
    LOG(debug2) << "local  x: " << std::setprecision(5) << local_point[0] << " y: " << std::setprecision(5)
                << local_point[1] << " z: " << std::setprecision(5) << local_point[2];
 
    // test projection to next anode wire
    Double_t proj_point[3];
    proj_point[0] = local_point[0];
    proj_point[1] = local_point[1];
    proj_point[2] = local_point[2];
 
    ProjectPositionToNextAnodeWire(proj_point);
 
    // print local coordinate - relative to module center
    LOG(debug2) << "proj   x: " << std::setprecision(5) << proj_point[0] << " y: " << std::setprecision(5)
                << proj_point[1] << " z: " << std::setprecision(5) << proj_point[2];
 
    Double_t corner_point[3];
    corner_point[2] = local_point[2];
    TransformToLocalCorner(local_point, corner_point[0], corner_point[1]);
 
    // print local coordinate - relative to module corner
    LOG(debug2) << "corner x: " << std::setprecision(5) << corner_point[0] << " y: " << std::setprecision(5)
                << corner_point[1] << " z: " << std::setprecision(5) << corner_point[2];
 
    LOG(debug2) << "pos    x: " << std::setprecision(5) << fX << " y: " << std::setprecision(5) << fY
                << " z: " << std::setprecision(5) << fZ << " ori: " << std::setprecision(5) << fOrientation;
 
    LOG(debug2) << "size/2 x: " << std::setprecision(5) << fSizeX << " y: " << std::setprecision(5) << fSizeY
                << " z: " << std::setprecision(5) << fSizeZ;
 
    Double_t sector_point[3];
    sector_point[2] = local_point[2];
    TransformToLocalSector(local_point, sector_point[0], sector_point[1]);
 
    // print local coordinate - relative to module sector
    LOG(debug2) << "sector x: " << std::setprecision(5) << sector_point[0] << " y: " << std::setprecision(5)
                << sector_point[1] << " z: " << std::setprecision(5) << sector_point[2];
 
    // calculate in which sector the point is
    sectorId = GetSector(local_point);
    LOG(debug2) << "sectornr: " << std::setprecision(5) << sectorId;
 
    LOG(debug2) << "ncol    : " << std::setprecision(5) << GetNofColumns();
    LOG(debug2) << "nrow    : " << std::setprecision(5) << GetNofRows();
 
    // print local coordinate - relative to module sector
    LOG(debug2) << "sec2   x: " << std::setprecision(5) << fSectorBeginX.GetAt(2) << " y: " << std::setprecision(5)
                << fSectorBeginY.GetAt(2);
    LOG(debug2) << "sec1   x: " << std::setprecision(5) << fSectorBeginX.GetAt(1) << " y: " << std::setprecision(5)
                << fSectorBeginY.GetAt(1);
    LOG(debug2) << "sec0   x: " << std::setprecision(5) << fSectorBeginX.GetAt(0) << " y: " << std::setprecision(5)
                << fSectorBeginY.GetAt(0);
 
    // get pad information
    Int_t s, c, r;
    GetPadInfo(local_point, s, c, r);
    LOG(debug2) << "pad sec: " << s << " col: " << c << " row: " << r;
  }  // debug2
 
  //  Int_t moduleAddress = CbmTrdAddress::GetModuleAddress(trdPoint->GetDetectorID());
  GetModuleInformation(
    /*moduleAddress, */ local_point, sectorId, columnId, rowId);
}
 
 
//___________________________________________________________________________
void CbmTrdParModDigi::TransformToLocalCorner(const Double_t* local_point, Double_t& posX, Double_t& posY) const
{
  posX = local_point[0] + fSizeX;
  posY = local_point[1] + fSizeY;
}
 
//___________________________________________________________________________
void CbmTrdParModDigi::TransformToLocalSector(const Double_t* local_point, Double_t& posX, Double_t& posY) const
{
  TransformToLocalCorner(local_point, posX, posY);
  Int_t sector = GetSector(local_point);
  posX -= fSectorBeginX.GetAt(sector);
  posY -= fSectorBeginY.GetAt(sector);
}
 
 
//___________________________________________________________________________
void CbmTrdParModDigi::TransformToLocalPad(const Double_t* local_point, Double_t& posX, Double_t& posY) const
{
  Double_t sector_point[2];
  TransformToLocalSector(local_point, sector_point[0], sector_point[1]);
 
  //   TransformToLocalCorner(local_point, posX, posY);
  Int_t sectorId = GetSector(local_point);
 
  Double_t padx =
    (Int_t(sector_point[0] / fPadSizeX.At(sectorId)) + 0.5) * fPadSizeX.At(sectorId);  // x position of pad center
  Double_t pady =
    (Int_t(sector_point[1] / fPadSizeY.At(sectorId)) + 0.5) * fPadSizeY.At(sectorId);  // y position of pad center
 
  posX = sector_point[0] - padx;
  posY = sector_point[1] - pady;
 
  /*
  // print debug info
  LOG(info) << "sector x: " << std::setprecision(5) << sector_point[0] 
  << " y: " << std::setprecision(5) << sector_point[1];
 
  LOG(info) << "pad    x: " << std::setprecision(5) << padx 
  << " y: " << std::setprecision(5) << pady;
 
  LOG(info) << "diff   x: " << std::setprecision(5) << posX 
  << " y: " << std::setprecision(5) << posY;
 
  LOG(info) << "npad   x: " << std::setprecision(5) << padx / fPadSizeX.At(sectorId)
  << " y: " << std::setprecision(5) << pady / fPadSizeY.At(sectorId);
  */
}
 
 
//___________________________________________________________________________
void CbmTrdParModDigi::TransformHitError(TVector3& hitErr) const
{
  Double_t x, y;  // ,z;
  x = hitErr.X();
  y = hitErr.Y();
  //  z = hitErr.Z();
 
  //LOG(info) << "ori : " << fOrientation;
 
  if ((fOrientation == 1) || (fOrientation == 3)) {  // for orientations 1 or 3
    hitErr.SetX(y);                                  // swap errors
    hitErr.SetY(x);                                  // swap errors
 
    //    LOG(info) << " swapped x and y error";
    //    LOG(info) << "ori : " << fOrientation << " swapped x and y error";
  }
}
 
 
//___________________________________________________________________________
void CbmTrdParModDigi::GetModuleInformation(
  //Int_t moduleAddress,
  const Double_t* local_point, Int_t& sectorId, Int_t& columnId, Int_t& rowId) const
{
  // safety check. Up to now always correct, so could be removed.
  //   if (fModuleAddress != moduleAddress) {
  //     LOG(error) << "CbmTrdParModDigi::GetModuleInformation: This is wrong!";
  //   }
 
  Double_t posX, posY;
  TransformToLocalSector(local_point, posX, posY);
 
  // calculate in which sector the point is
  sectorId = GetSector(local_point);
 
  columnId = (Int_t)(posX / fPadSizeX.At(sectorId));
  rowId    = (Int_t)(posY / fPadSizeY.At(sectorId));
}
 
 
//___________________________________________________________________________
void CbmTrdParModDigi::GetPadPosition(const Int_t sector, const Int_t col, const Int_t row, TVector3& padPos,
                                      TVector3& padPosErr) const
{
 
  Double_t posX = 0;
  Double_t posY = 0;
  Double_t posZ = 0;
 
  Double_t padsizex = fPadSizeX.At(sector);
  Double_t padsizey = fPadSizeY.At(sector);
 
  // calculate position in sector coordinate system
  // with the origin in the lower left corner (looking upstream)
  posX = (((Double_t) col + 0.5) * padsizex);
  posY = (((Double_t) row + 0.5) * padsizey);
 
  // calculate position in module coordinate system
  // with the origin in the lower left corner (looking upstream)
  posX += fSectorBeginX.GetAt(sector);
  posY += fSectorBeginY.GetAt(sector);
 
  // calculate position in the module coordinate system
  // with origin in the middle of the module
  posX -= fSizeX;
  posY -= fSizeY;
  posZ = 0;
 
  // check limits
  if (fabs(posX) > fSizeX) LOG(fatal) << "CbmTrdParModDigi::GetPadPosition posX=" << posX << " is out of bounds!";
  // check limits
  if (fabs(posY) > fSizeY) LOG(fatal) << "CbmTrdParModDigi::GetPadPosition posY=" << posY << " is out of bounds!";
 
  padPos.SetXYZ(posX, posY, posZ);
  padPosErr.SetXYZ(padsizex / 2., padsizey / 2., 0.);
}
 
 
//___________________________________________________________________________
void CbmTrdParModDigi::GetPadPosition(const Int_t padAddress, TVector3& padPos, TVector3& padPosErr) const
{
 
  // Double_t posX = 0;
  // Double_t posY = 0;
  // Double_t posZ = 0;
 
  Int_t sectorId = CbmTrdAddress::GetSectorId(padAddress);
  Int_t rowId    = CbmTrdAddress::GetRowId(padAddress);
  Int_t columnId = CbmTrdAddress::GetColumnId(padAddress);
 
  return GetPadPosition(sectorId, rowId, columnId, padPos, padPosErr);
}
 
//___________________________________________________________________________
void CbmTrdParModDigi::GetPadPosition(const Int_t padAddress, bool isCbmTrdDigiAddress, TVector3& padPos,
                                      TVector3& padPosErr) const
{
  if (!isCbmTrdDigiAddress)
    LOG(error) << "Trying to get a CbmTrd PadPosition from DigiAddress format "
                  "function without digiAddress format";
 
 
  Int_t row = GetPadRow(padAddress);
  Int_t col = GetPadColumn(padAddress);
 
  Int_t srow(-1);
  Int_t sector = GetSectorRow(row, srow);
 
  return GetPadPosition(sector, col, srow, padPos, padPosErr);
}
 
//___________________________________________________________________________
void CbmTrdParModDigi::GetPosition(
  //         Int_t moduleAddress,
  Int_t sectorId, Int_t columnId, Int_t rowId, TVector3& padPos, TVector3& padSize) const
{
  //   if (fModuleAddress != moduleAddress) {
  //     LOG(error) << "CbmTrdParModDigi::GetPosition This is wrong!";
  //   }
 
  // check limits
  if ((sectorId < 0) || (sectorId > GetNofSectors() - 1))
    LOG(fatal) << "CbmTrdParModDigi::GetPosition sectorId " << sectorId << " of "
               << GetNofSectors() - 1  //<< " in moduleAddress " << moduleAddress
               << " is out of bounds!";
 
  // check limits
  if ((columnId < 0) || (columnId > GetNofColumnsInSector(sectorId) - 1))
    LOG(fatal) << "CbmTrdParModDigi::GetPosition columnId " << columnId << " of "
               << GetNofColumnsInSector(sectorId) - 1
               //<< " in moduleAddress " << moduleAddress
               << " is out of bounds!";
 
  // check limits
  if ((rowId < 0) || (rowId > GetNofRowsInSector(sectorId) - 1))
    LOG(fatal) << "CbmTrdParModDigi::GetPosition rowId " << rowId << " of "
               << GetNofRowsInSector(sectorId) - 1
               //<< " in moduleAddress " << moduleAddress
               << " is out of bounds!";
 
  Double_t local_point[3];
  Double_t padsizex = fPadSizeX.At(sectorId);
  Double_t padsizey = fPadSizeY.At(sectorId);
 
  // calculate position in sector coordinate system
  // with the origin in the lower left corner (looking upstream)
  local_point[0] = (((Double_t) columnId + 0.5) * padsizex);
  local_point[1] = (((Double_t) rowId + 0.5) * padsizey);
 
  // calculate position in module coordinate system
  // with the origin in the lower left corner (looking upstream)
  local_point[0] += fSectorBeginX.GetAt(sectorId);
  local_point[1] += fSectorBeginY.GetAt(sectorId);
  // local_point[i] must be >= 0 at this point
 
  // check limits
  if ((local_point[0] < 0) || (local_point[0] > 2 * fSizeX))
    LOG(fatal) << "CbmTrdParModDigi::GetPosition local_point[0]="
               << local_point[0]
               //<< " in moduleAddress " << moduleAddress
               << " is out of bounds!";
  // check limits
  if ((local_point[1] < 0) || (local_point[1] > 2 * fSizeY))
    LOG(fatal) << "CbmTrdParModDigi::GetPosition local_point[1]="
               << local_point[1]
               //<< " in moduleAddress " << moduleAddress
               << " is out of bounds!";
 
  // calculate position in the module coordinate system
  // with origin in the middle of the module
  local_point[0] -= fSizeX;
  local_point[1] -= fSizeY;
  local_point[2] = fSizeZ;
 
  // navigate to the correct module. (fX,fY,fZ)
  gGeoManager->FindNode(fX, fY, fZ);
 
  // get the local point in local MC coordinates from
  // the geomanager. This coordinate system is rotated,
  // if the chamber is rotated. This is corrected in
  // GetModuleInformation to have the same
  // local coordinate system in all the chambers
  Double_t global_point[3];  // global_point[3];
  gGeoManager->LocalToMaster(local_point, global_point);
 
  // calculate the position in the global coordinate system
  // with the origin in target
  Double_t posX = global_point[0];
  Double_t posY = global_point[1];
  Double_t posZ = global_point[2];
 
  padPos.SetXYZ(posX, posY, posZ);
  padSize.SetXYZ(padsizex, padsizey, 0.);
}
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetPadColumn(const Int_t channelNumber) const
{
  // calculate the pad column based on
  // the channeNumber as defined in the
  // CbmTrdDigi
 
  Int_t ncols = GetNofColumns();
  Int_t col   = channelNumber % ncols;
 
  return col;
}
 
//___________________________________________________________________________
Int_t CbmTrdParModDigi::GetPadRow(const Int_t channelNumber) const
{
  // calculate the pad row based on
  // the channeNumber as defined in the
  // CbmTrdDigi
 
  Int_t ncols = GetNofColumns();
  Int_t row   = channelNumber / ncols;
 
  return row;
}
 
 
ClassImp(CbmTrdParModDigi)