MuonClusterOnTrack.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "MuonRIO_OnTrack/MuonClusterOnTrack.h"
#include "GeoPrimitives/GeoPrimitivesToStringConverter.h"
#include <iostream>
 
namespace Muon {
 
// Default constructor:
MuonClusterOnTrack::MuonClusterOnTrack():
    Trk::RIO_OnTrack(),
    m_globalPosition(),
    m_positionAlongStrip(0)
{ }
 
// copy constructor:
  MuonClusterOnTrack::MuonClusterOnTrack( const MuonClusterOnTrack& rot) :
    Trk::RIO_OnTrack(rot),
    m_globalPosition()
{
  m_positionAlongStrip = rot.m_positionAlongStrip;
  if (rot.m_globalPosition) m_globalPosition.store(std::make_unique<const Amg::Vector3D>(*rot.m_globalPosition));
}
 
 
// Constructor with parameters
MuonClusterOnTrack::MuonClusterOnTrack(
  Trk::LocalParameters&& locpos,
  Amg::MatrixX&& locerr,
  const Identifier& id,
  const double positionAlongStrip)
    : RIO_OnTrack(std::move(locpos), std::move(locerr), id),  // call base class constructor
      m_globalPosition(),
      m_positionAlongStrip(positionAlongStrip) {}
 
// Destructor:
MuonClusterOnTrack::~MuonClusterOnTrack() = default;
 
// assignment operator:
MuonClusterOnTrack& MuonClusterOnTrack::operator=( const MuonClusterOnTrack& rot){
  if ( &rot != this) {
    Trk::RIO_OnTrack::operator=(rot);//base class ass. op.
    m_positionAlongStrip = rot.m_positionAlongStrip;
    if (rot.m_globalPosition) m_globalPosition.store(std::make_unique<const Amg::Vector3D>(*rot.m_globalPosition));
    else if (m_globalPosition) m_globalPosition.release().reset();
  }
  return *this;
}
 
MsgStream& MuonClusterOnTrack::dump( MsgStream&    stream) const
{
  stream << MSG::INFO<<"MuonClusterOnTrack {"<<std::endl;
 
  Trk::RIO_OnTrack::dump(stream);
 
  stream << "Global position (x,y,z) = "<<Amg::toString(globalPosition())<<std::endl;
  stream << "Position along strip: "<<m_positionAlongStrip<<std::endl;
  stream<<"}"<<endmsg;
  return stream;
}
 
std::ostream& MuonClusterOnTrack::dump( std::ostream&    stream) const
{
  stream << "MuonClusterOnTrack {"<<std::endl;
  std::ios_base::fmtflags originalFormat = stream.flags();
 
  Trk::RIO_OnTrack::dump(stream);
 
  stream << std::setiosflags(std::ios::fixed)<< std::setprecision(3);
  stream << "Position along strip: "<<m_positionAlongStrip<<std::endl;
  stream << "Global position (x,y,z) = "<<Amg::toString(globalPosition())<<std::endl;
 
  stream<<"}"<<std::endl;
  stream.flags( originalFormat );
 
  return stream;
}
 
const Amg::Vector3D& MuonClusterOnTrack::globalPosition() const {
  if (detectorElement()==nullptr){
    // Not much we can do here - no detelement, so just return 0,0,0
    m_globalPosition.set(std::make_unique<const Amg::Vector3D>(0.0,0.0,0.0));
  }
 
  if (not m_globalPosition) {
    // calculate global position from the position of the strip and the position along the strip
    Amg::Vector2D lpos{Amg::Vector2D::Zero()};
    if( localParameters().contains( Trk::locX ) )
      lpos = Amg::Vector2D( localParameters().get(Trk::locX), m_positionAlongStrip );
    else
      lpos = Amg::Vector2D( m_positionAlongStrip, localParameters().get(Trk::locY) );
 
    Amg::Vector3D gpos{Amg::Vector3D::Zero()};
    detectorElement()->surface( identify() ).localToGlobal(lpos, gpos, gpos);
 
    m_globalPosition.set(std::make_unique<const Amg::Vector3D>(gpos));
  }
 
  return *m_globalPosition;
}
 
}