BasicFacetRelationVarSet.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/facetRelation/BasicFacetRelationVarSet.h>
 
#include <tracking/trackingUtilities/eventdata/hits/CDCFacet.h>
#include <tracking/trackingUtilities/geometry/ParameterLine2D.h>
#include <framework/geometry/VectorUtil.h>
 
using namespace Belle2;
using namespace TrackFindingCDC;
using namespace TrackingUtilities;
 
bool BasicFacetRelationVarSet::extract(const Relation<const CDCFacet>* ptrFacetRelation)
{
  if (not ptrFacetRelation) return false;
 
  const CDCFacet* ptrFromFacet(ptrFacetRelation->getFrom());
  const CDCFacet* ptrToFacet(ptrFacetRelation->getTo());
 
  const CDCFacet& fromFacet = *ptrFromFacet;
  const CDCFacet& toFacet = *ptrToFacet;
 
  const ParameterLine2D& fromStartToMiddle = fromFacet.getStartToMiddleLine();
  const ParameterLine2D& fromStartToEnd    = fromFacet.getStartToEndLine();
 
  const ParameterLine2D& toStartToEnd   = toFacet.getStartToEndLine();
  const ParameterLine2D& toMiddleToEnd  = toFacet.getMiddleToEndLine();
 
  const double fromMiddleCos = VectorUtil::CosPhi(fromStartToMiddle.tangential(), toStartToEnd.tangential());
  const double toMiddleCos = VectorUtil::CosPhi(fromStartToEnd.tangential(), toMiddleToEnd.tangential());
 
  const double fromMiddlePhi = acos(fromMiddleCos);
  const double toMiddlePhi = acos(toMiddleCos);
 
  var<named("superlayer_id")>() = fromFacet.getISuperLayer();
  var<named("from_middle_phi")>() = fromMiddlePhi;
  var<named("to_middle_phi")>() = toMiddlePhi;
 
  return true;
}