Polygon Manipulation Routines
POLY_C_CONV (polygon_list, colors)
Returns a list of colors for each polygon, given a polygon list and a list of colors for each vertex.
POLY_COUNT (polygon_list)
Returns the total number of polygons contained in a polygon list.
POLY_MERGE, vertex_list1, vertex_list2, polygon_list1, polygon_list2, vert, poly, pg_num
Merges two vertex lists and two polygon lists together so that they can be rendered in a single pass.
