"Bald Eagle" <cre### [at] netscapenet> wrote:

>
> The bounding box - and all other coordinates in pov-ray - are referenced to the
> origin.   Nothing to do with the camera at all.  Ever.
>
> So when you do your near / far / camera triangle, of course you "flip" the near
> and far - you've moved the camera to a point where that's true.
>

Yeah; I had a weird locked-in notion in my head that the min_extent/max_extent
coordinates *changed* as I moved the camera(!). I was confusing/conflating that
with vlength.

Duh. Just goes to show that concentrating solely on a single subject for days
can be... detrimental to mental functioning :-P

But I still think trace() will work; I just need to try it and see.

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