-/* Revision 1.2 1997/11/14 00:29:13 curt
-/* Transform scenery coordinates at this point in pipeline when scenery is
-/* being translated to .obj format, not when it is being loaded into the end
-/* renderer. Precalculate normals for each node as average of the normals
-/* of each containing polygon so Garoude shading is now supportable.