TrackAnalysisInfoWriteTool.icc

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
/**
 * @file    TrackAnalysisInfoWriteTool.icc
 * @author  Marco Aparo <marco.aparo@cern.ch>
 **/
 
/// Local includes
#include "TrackMatchingLookup.h"
#include "TrackParametersHelper.h"
 
/// STL includes
#include <algorithm>
#include <sstream>
 
 
///-------------------------
///----- getMatchInfo ------
///-------------------------
template< typename Tcoll_t, typename Rcoll_t >
IDTPM::MatchInfo_t< Tcoll_t, Rcoll_t >
IDTPM::TrackAnalysisInfoWriteTool::getMatchInfo(
    const Vec_t< Tcoll_t >& Tvec,
    const Vec_t< Rcoll_t >& Rvec,
    const Tcoll_t* Tcoll,
    const Rcoll_t* Rcoll,
    const ITrackMatchingLookup* matches ) const
{
  VecEL_t< Tcoll_t > testVec;
  VecEL_t< Rcoll_t > refVec;
  VecF_t distVec;
  Vec_t< Rcoll_t > matchedRefVec;
 
  auto matches_c = dynamic_cast< const TrackMatchingLookupBase<
      typename Tcoll_t::base_value_type, 
      typename Rcoll_t::base_value_type >* >( matches );
 
  /// Loop over test vector
  for( typename Tcoll_t::const_value_type thisTest : Tvec ) {
    EL_t< Tcoll_t > testLink;
    EL_t< Rcoll_t > refLink;
    float dist( 999. );
 
    testLink.toContainedElement( *Tcoll, thisTest );
 
    if( matches_c->isTestInMaps( *thisTest ) ) {
      typename Rcoll_t::const_value_type thisRef =
          matches_c->getMatchedRef( *thisTest );
      refLink.toContainedElement( *Rcoll, thisRef );
      dist = matches_c->getDist( *thisTest );
      matchedRefVec.push_back( thisRef );
    }
 
    /// Fill both matched and unmatched tests
    testVec.push_back( testLink );
    refVec.push_back( refLink );
    distVec.push_back( dist ); 
  } // Close loop over test vector
 
  /// Loop over reference vector
  /// for remaining/unmatched reference only
  for( typename Rcoll_t::const_value_type thisRef : Rvec ) {
    EL_t< Tcoll_t > testLink;
    EL_t< Rcoll_t > refLink;
    float dist( 999. );
 
    /// Skip already-recorded matched references
    if( std::find( matchedRefVec.begin(), matchedRefVec.end(), thisRef ) != 
                      matchedRefVec.end() ) continue;
 
    if( matches_c->isRefInMaps( *thisRef ) ) {
      ATH_MSG_WARNING( "Remaining reference is matched and it should not be." );
    }
 
    refLink.toContainedElement( *Rcoll, thisRef );
 
    /// Fill remaining unmatched reference
    testVec.push_back( testLink );
    refVec.push_back( refLink );
    distVec.push_back( dist ); 
  } // Close loop over reference vector
 
  return std::make_tuple( testVec, refVec, distVec );
}
 
 
///---------------------------
///----- printMatchInfo ------
///---------------------------
template< typename Tcoll_t, typename Rcoll_t >
std::string IDTPM::TrackAnalysisInfoWriteTool::printMatchInfo(
    const VecEL_t< Tcoll_t >& testVec,
    const VecEL_t< Rcoll_t >& refVec,
    const VecF_t& distVec ) const
{
  std::stringstream ss;
 
  if( testVec.size() != refVec.size() or testVec.size() != distVec.size() ) {
    ATH_MSG_ERROR( "Vector size mismatch" );
    return "";
  }
 
  for( size_t iv=0; iv<distVec.size(); iv++ ) {
    /// return the (track or truth) particle pT
    /// if their ElementLink is valid, i.e. if the particle exists
    std::string testPt = testVec.at(iv).isValid() ? std::to_string( pT( **testVec.at(iv) ) ) : "N/A";
    std::string refPt = refVec.at(iv).isValid() ? std::to_string( pT( **refVec.at(iv) ) ) : "N/A";
    std::string dist = std::to_string( distVec.at(iv) );
    ss << "\t\t\t\t" << testPt << " --> " << refPt << " ( " << dist << " )\n";
    if( iv > 20 ) { ss << "\t\t\t\tet al....\n"; break; }
  }
  return ss.str();
}