_Point :: (PositionStructureClass fc a) =>
  Prism' (GeometryStructure Point a fv fc) (Geometry Point a)
_Point = _Position . _Geometry
_Point :: (PositionStructureClass fc a) =>
  Prism' (GeometryStructure Point a fv fc) (Geometry Point a)
_Point = _Position . _Geometry
_Point = _Position . _Geometry