VertexDistance3D.h

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#ifndef Vertex_VertexDistance3D_H
#define Vertex_VertexDistance3D_H

#include "RecoVertex/VertexTools/interface/VertexDistance.h"
#include "DataFormats/CLHEP/interface/AlgebraicObjects.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/GeometryCommonDetAlgo/interface/GlobalError.h"

class VertexDistance3D : public VertexDistance {

public:
  using VertexDistance::compatibility;

  VertexDistance3D() : theNullMatrix(3, 0) {}

  virtual Measurement1D signedDistance(const reco::Vertex &primVtx , 
                 const reco::Vertex &secVtx,
                 const GlobalVector & momentum) const;

  virtual VertexDistance3D * clone() const
  {
    return new VertexDistance3D(*this);
  }

  using VertexDistance::distance;

private:

  AlgebraicSymMatrix theNullMatrix;
  virtual Measurement1D distance(const GlobalPoint & vtx1Position, 
                 const GlobalError & vtx1PositionError, 
                 const GlobalPoint & vtx2Position, 
                 const GlobalError & vtx2PositionError) const;

  virtual float compatibility(const GlobalPoint & vtx1Position, 
                  const GlobalError & vtx1PositionError, 
                  const GlobalPoint & vtx2Position, 
                  const GlobalError & vtx2PositionError) const;
};


#endif