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Vertex.h

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//=======================================================================
// Vertex
// auxilary class to store vertex parameters 
// 09/2001 Kay Huettmann
//=======================================================================
#ifndef _VERTEX_H_
#define _VERTEX_H_

#include "CLHEP/Matrix/SymMatrix.h"
#include "CLHEP/Matrix/Vector.h"
#include "CLHEP/Vector/LorentzVector.h"
#include "QvrtBase.h"

class Vertex {
public:
  Vertex();                                // default constructor
  Vertex(QvrtBase*);                       // create Vertex from an QvrtBase obj.
  void setVertexParameters(QvrtBase*);     // set vertex parameters 
  void setVertexPosition(float x, float y, float z);     // set vertex position 
  void setVertexPosition(Hep3Vector* v3v);                // 
  void setVertexCov(int m, int n, float val);            // set cov matrix 
  void setVertexCov(HepSymMatrix* cov_matrix);           // 

  const Hep3Vector& v3V()const {return _v3V;};
  float cov_matrix(int m,int n)const {return _cov_matrix(m,n);}
  const HepSymMatrix& cov_matrix()const {return _cov_matrix;}

private:
  Hep3Vector _v3V;
  HepSymMatrix _cov_matrix;
};

#endif

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