class TPrimary: public TObject, public TAttLine, public TAtt3D

  Primary vertex particle default constructor

  TPrimary vertex particle normal constructor

   Primaray vertex particle default destructor

-*-*-*-*Compute distance from point px,py to a primary track
*-*            ====================================================
-
*-*  Compute the closest distance of approach from point px,py to each segment
*-*  of a track.
*-*  The distance is computed in pixels units.
-

-*-*-*-*-*-*-*Execute action corresponding to one event
*-*                  =========================================

return name of primary particle

  returning a pointer to the particle attributes

return title of primary particle

  Paint a primary track

  Print the internals of the primary vertex particle

Return total X3D size of this primary*-
*-*        =====================================