uFldVoronoi is a shoreside app typically used when one or more vehicles
are running a behavior from the Voronoi family of behaviors. It will render
the Voronoi region polygon(s), and the Voronoi decomposition related to ground
truth vehicle positions.


Subscribes for:
  BVOI_STATE
  NODE_REPORT
  VOI_REGION_POLY

BVOI_STATE = vname=abe,
             state=captured/
	     region_label=one,
	     activated_dist=meters

FldVoronoi
  vector<XYPolygon>       region_polys
  vector<VoronoiField>    m_vfields
  vector<VFieldEvaluator> m_evaluators




MultiStateLog

  map<string(vname), StateLog>

StateLog
  string curr_state
  double prev_tstsamp
  map<string(state), double> map_state_time