"Kenneth" <kdw### [at] gmailcom> wrote:

> It might be even easier...

This works; but I forgot to specifically mention that the 2nd 'line' (the
cylinder) is the object that's put into the trace() command, for it to work on;
perhaps that was obvious.

> ...but using a *very small*-diameter cylinder may make that computation
> unnecessary, from a practical standpoint.)

I've found that there's actually a limit to how small the radius can be. Trace()
has a problem working with an object below about six least-significant digits in
size. (Like, .000001) Seems to depend on the particular direction vector used.
Probably a result of ONE of trace's <x,y,z> computations dropping below a
certain precision 'threshold',

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