quad:DrawStyle() specifies the draw style for quadrics rendered with quad. The legal
values are as follows:
#GLU_FILL-
Quadrics are rendered with polygon primitives. The polygons are drawn in a counter-clockwise fashion
with respect to their normals (as defined with quad:Orientation()).
#GLU_LINE-
Quadrics are rendered as a set of lines.
#GLU_SILHOUETTE-
Quadrics are rendered as a set of lines, except that edges separating coplanar faces will not be drawn.
#GLU_POINT-
Quadrics are rendered as a set of points.
Please consult an OpenGL reference manual for more information.