> re 'trace', yes, you can use the optional parameter to check the normal's not
> zero and take whatever "action" is needed.
>

sorry I can't explain myself well in English
I don't need that POV to "fixes" the errors in the final render, or give me an
error message step by step over the lines.
I'd like two alternatives.
A precise report on "where" the errors are (es. list numbers line).
Or the elimination of corrupt triangles, physically, by overwriting the file I
pass it.
My goal is to generate clean meshes.
Thanks!
G.

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