SignedImpactParameter3D.h

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#ifndef _BTAGGER_SIGNEDIMPACTPARAMETER3D_H_
#define _BTAGGER_SIGNEDIMPACTPARAMETER3D_H_
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include "DataFormats/GeometryCommonDetAlgo/interface/Measurement1D.h"
#include "TrackingTools/TransientTrack/interface/TransientTrack.h"
#include "DataFormats/VertexReco/interface/Vertex.h"
#include "DataFormats/GeometryVector/interface/GlobalVector.h"
#include <utility>
class SignedImpactParameter3D {
public:
  // construct

  SignedImpactParameter3D(){};

  std::pair<bool, Measurement1D> apply(const reco::TransientTrack &,
                                       const GlobalVector &direction,
                                       const reco::Vertex &vertex) const;

  int id() const { return 2; }

  static std::pair<double, Measurement1D> distanceWithJetAxis(const reco::TransientTrack &transientTrack,
                                                              const GlobalVector &direction,
                                                              const reco::Vertex &vertex);

private:
  static GlobalVector distance(const TrajectoryStateOnSurface &, const reco::Vertex &, const GlobalVector &);

  static TrajectoryStateOnSurface closestApproachToJet(const FreeTrajectoryState &,
                                                       const reco::Vertex &,
                                                       const GlobalVector &,
                                                       const MagneticField *);
};

#endif