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Re: [ATM] re:Arbitrary ray origins



Richard F.L.R. Snashall wrote:

> Actually, no.  Assuming this is the last of the two solutions for
> entry into the [presumably conic] surface and both are invalid
> (with the same definition of N), then the entire ray trace needs
> to be aborted as invalid

Backtrack on that!  You only ever investigate one of the two
solutions; the one with the shortest path length to get to
the surface intercept.

-- 

Rick S.

http://users.rcn.com/rflrs

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