I was looking at bicubic patches, but they seem pretty limiting so I want to
try modeling with mesh2. I want to write a macro that will figure the normal
vertices. I am assuming that I created the triangles myself, so all faces
will be defined clockwise. This is the best idea I could come up with. Is
there a faster way? Unfortunately, I know very little of programming outside
of Povray.


#macro Mesh_Smooth (VERTICES_array, FACES_array)

Make a 1D array (VCOUNT_array) to store the number of times each element in
VERTICES_array appears in FACES_array

Make a 1D array (NFACES_array) to store the normals of each face in
FACES_array

Make a 1D array (CHECKED_array) to store the number of times a faces normal
has been used to determine a vertex normal

************

Start with VERTICES_array[n]

Create 1D array (USEDFACES_array) with VCOUNT_array[n] elements to store the
NFACES.array positions used in determining the vertex normal

Create 1D array (FVNORMS_array) with VCOUNT_array[n] elements to store the
NFACES.array content used in determining the vertex normal

Make a loop from 0 to VCOUNT_array[n]-1

Search in FACES_array for occurances of VERTEX_array[n]

When found, check for normal in NFACES_array and if not present, calculate
the normal of the face and store it in NFACES_array and in FVNORMS._array.
Also, increase CHECKED_array[n] by one and store "n" in USEDFACES_array.

When appropriate number of faces have been calculated, calculate vertex
normal and output it to a file

Use USEDFACES_array to check CHECKED_array for faces which have been used
three times. Remove any which have from FACES_array, NFACES_array, and
CHECKED_array.

Repeat.

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