00100	CART PROJECT					       SEPTEMBER 1972
00200	
00300	
00400	                OCCULT  -  A HIDDEN LINE ELIMINATOR.
00500	
00600	                              Baumgart

00700	
00800	
00900		OCCULT  marks  the  faces,  edges  and  vertices  of   GEOMED
01000	polyhedrons  as  either  visible  or hidden. Edges that were at first
01100	partially visible are split into pieces so that each piece is  either
01200	fully  visible  or  fully  hidden.   OCCULT is based on the generally
01300	discredited idea of comparing each edge with all the other edges  and
01400	hiding  as  much  as  possible  when  a  pair of edges that cross are
01500	discovered.