BasicSegmentRelationVarSet.cc

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#include <tracking/trackFindingCDC/filters/segmentRelation/BasicSegmentRelationVarSet.h>
 
#include <tracking/trackingUtilities/eventdata/segments/CDCSegment2D.h>
 
#include <cdc/topology/CDCWire.h>
 
#include <tracking/trackingUtilities/utilities/Functional.h>
 
using namespace Belle2;
using namespace TrackFindingCDC;
using namespace TrackingUtilities;
 
namespace {
  std::array<int, 8> getNHitsByILayer(const CDCSegment2D& segment)
  {
    std::array<int, 8> result{};
    for (const CDCRecoHit2D& recoHit2D : segment) {
      ++result[recoHit2D.getWire().getILayer()];
    }
    return result;
  }
}
 
bool BasicSegmentRelationVarSet::extract(const Relation<const CDCSegment2D>* ptrSegmentRelation)
{
  if (not ptrSegmentRelation) return false;
 
  const Relation<const CDCSegment2D>& segmentPair = *ptrSegmentRelation;
 
  const CDCSegment2D* ptrFromSegment = segmentPair.getFrom();
  const CDCSegment2D* ptrToSegment = segmentPair.getTo();
 
  const CDCSegment2D& fromSegment = *ptrFromSegment;
  const CDCSegment2D& toSegment = *ptrToSegment;
 
  var<named("stereo_kind")>() = static_cast<float>(fromSegment.getStereoKind());
  var<named("sl_id")>() = fromSegment.getISuperLayer();
 
  var<named("from_size")>() = fromSegment.size();
  var<named("to_size")>() = toSegment.size();
 
  std::array<int, 8> fromNHitsByILayer = getNHitsByILayer(fromSegment);
  std::array<int, 8> toNHitsByILayer = getNHitsByILayer(toSegment);
 
  var<named("from_n_layers")>() = std::count_if(fromNHitsByILayer.begin(), fromNHitsByILayer.end(), Id() > 0);;
  var<named("to_n_layers")>() = std::count_if(toNHitsByILayer.begin(), toNHitsByILayer.end(), Id() > 0);
 
  return true;
}