SCT_ClusterOnTrack.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/

// SCT_ClusterOnTrack.cxx, (c) ATLAS Detector Software
 
#include "InDetRIO_OnTrack/SCT_ClusterOnTrack.h"
 
#include <limits>
#include <ostream>
 
#include "GaudiKernel/MsgStream.h"
#include "InDetPrepRawData/SCT_Cluster.h"
#include "InDetReadoutGeometry/SiDetectorElement.h"
 
// Constructor with parameters - no global position assigned
InDet::SCT_ClusterOnTrack::SCT_ClusterOnTrack(const InDet::SCT_Cluster* RIO,
                                              Trk::LocalParameters&& locpars,
                                              Amg::MatrixX&& locerr,
                                              const IdentifierHash& idDE,
                                              bool isbroad)
    : SiClusterOnTrack(std::move(locpars), std::move(locerr), idDE,
                       RIO->identify(), isbroad) {
  m_detEl = RIO->detectorElement();
  m_positionAlongStrip = std::numeric_limits<double>::quiet_NaN();
  m_rio.setElement(RIO);
  // Set global position
  Amg::Vector2D lpos(localParameters().get(Trk::locX), m_positionAlongStrip);
  m_globalPosition = detectorElement()->surface(identify()).localToGlobal(lpos);
}
 
// Constructor with parameters
InDet::SCT_ClusterOnTrack::SCT_ClusterOnTrack(
    const InDet::SCT_Cluster* RIO, Trk::LocalParameters&& locpars,
    Amg::MatrixX&& locerr, const IdentifierHash& idDE,
    const Amg::Vector3D& globalPosition, bool isbroad)
    : SiClusterOnTrack(std::move(locpars), std::move(locerr), idDE,
                       RIO->identify(), globalPosition, isbroad),
      m_detEl(RIO->detectorElement()) {
  m_rio.setElement(RIO);
 
  // constructing local position provided a global one
  std::optional<Amg::Vector2D> lpos{
      detectorElement()->surface(identify()).positionOnSurface(globalPosition)};
 
  // storing the position along the strip if available
  m_positionAlongStrip = (lpos) ? (*lpos)[Trk::locY] : 0.;
}
 
InDet::SCT_ClusterOnTrack::SCT_ClusterOnTrack(
    const ElementLinkToIDCSCT_ClusterContainer& RIO,
    const Trk::LocalParameters& locpars,
    const Amg::MatrixX& locerr,
    IdentifierHash idDE,
    const Identifier& id,
    bool isbroad,
    double positionAlongStrip)
    : SiClusterOnTrack(Trk::LocalParameters(locpars), Amg::MatrixX(locerr), idDE, id, isbroad),
      m_rio(RIO),
      m_detEl(nullptr),
      m_positionAlongStrip(positionAlongStrip) {}
 
// Default constructor:
InDet::SCT_ClusterOnTrack::SCT_ClusterOnTrack():
  SiClusterOnTrack(),
  m_rio(),
  m_detEl(nullptr),
  m_positionAlongStrip(std::numeric_limits<double>::quiet_NaN())
{}
 
 
const Trk::Surface& InDet::SCT_ClusterOnTrack::associatedSurface() const
{
  return (detectorElement()->surface());
}
 
void InDet::SCT_ClusterOnTrack::setValues(const Trk::TrkDetElementBase* detEl, const Trk::PrepRawData* )
{
  m_detEl = dynamic_cast<const InDetDD::SiDetectorElement*>(detEl);
  if (m_detEl) {
    // Set global position after setting the detector element
    Amg::Vector2D lpos(localParameters().get(Trk::locX), m_positionAlongStrip);
    m_globalPosition =
        detectorElement()->surface(identify()).localToGlobal(lpos);
  }
}
 
MsgStream& InDet::SCT_ClusterOnTrack::dump( MsgStream& sl ) const
{
  SiClusterOnTrack::dump(sl);  // use dump(...) from SiClusterOnTrack
  return sl;
}
 
std::ostream& InDet::SCT_ClusterOnTrack::dump( std::ostream& sl ) const
{
  SiClusterOnTrack::dump(sl);  // use dump(...) from SiClusterOnTrack
  return sl;
}