File indexing completed on 2024-04-06 12:29:14
0001 #include "RecoVertex/LinearizationPointFinders/interface/FallbackLinearizationPointFinder.h"
0002 #include "TrackingTools/TransientTrack/interface/TransientTrack.h"
0003 #include "DataFormats/GeometryVector/interface/GlobalPoint.h"
0004 #include "RecoVertex/VertexTools/interface/FsmwModeFinder3d.h"
0005
0006 FallbackLinearizationPointFinder::FallbackLinearizationPointFinder(const ModeFinder3d& m) : theModeFinder(m.clone()) {}
0007
0008 GlobalPoint FallbackLinearizationPointFinder::getLinearizationPoint(
0009 const std::vector<FreeTrajectoryState>& tracks) const {
0010 return GlobalPoint(0., 0., 0.);
0011 }
0012
0013 GlobalPoint FallbackLinearizationPointFinder::getLinearizationPoint(
0014 const std::vector<reco::TransientTrack>& tracks) const {
0015 switch (tracks.size()) {
0016 case 0:
0017 return GlobalPoint(0., 0., 0.);
0018 case 1:
0019 return tracks.begin()->impactPointState().globalPosition();
0020 default: {
0021 std::vector<std::pair<GlobalPoint, float> > wtracks;
0022 wtracks.reserve(tracks.size() - 1);
0023 for (std::vector<reco::TransientTrack>::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
0024 std::pair<GlobalPoint, float> tmp(i->impactPointState().globalPosition(), 1.);
0025 wtracks.push_back(tmp);
0026 }
0027 return (*theModeFinder)(wtracks);
0028 }
0029 }
0030 return GlobalPoint(0., 0., 0.);
0031 }
