VertexMatcher.h

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/* emacs: this is -*- c++ -*- */
 
 
#ifndef  VERTEXMATCHER_H
#define  VERTEXMATCHER_H
 
#include <iostream>
 
#include "TrigInDetAnalysisUtils/BestMatcher.h"
 
#include "TrigInDetAnalysis/TIDAVertex.h"
 
typedef TIDA::Associator<TIDA::Vertex> VertexAssociator;
 
 
class VertexMatcher : public BestMatcher<TIDA::Vertex> {
 
public:
 
  VertexMatcher( const std::string& s, double d=3 ) : BestMatcher<TIDA::Vertex>( s, d*d ) { }  
 
  ~VertexMatcher() { }
 
 
  virtual std::unique_ptr<VertexAssociator> uclone() const override { return std::make_unique<VertexMatcher>(*this); }
  
  virtual double distance( const TIDA::Vertex* v0, const TIDA::Vertex* v1 ) const override {
    double d = (v0->z()-v1->z());
    return d*d;

    //    if ( v0->dz() && v1->dz() ) return d*d/( v0->dz()*v0->dz() + v1->dz()*v1->dz() );
    //    else                        return d*d;
 };
  
};
 
inline std::ostream& operator<<( std::ostream& s, const VertexMatcher& /* _v */ ) { 
  return s;
}
 
 
#endif  // VERTEXMATCHER_H