"Tim Attwood" <tim### [at] comcastnet> wrote:
[...]
> (see 3.2.1.4.5  Functions, trace)
> Trace perty much would do the same thing, transfer a
> point on the imaginary XY plane to your object surface.
>
> Trace however doesn't require you know the formula
> for the surface of the object you want to find a point on,
> so if you have a more complicated shape it could still
> work for that.

Oh, cool! I'm sure I've seen the trace function before, but
for some reason I confused it with the #trace macro that
was used in the raytracer example. Thanks for pointing
it out.


> Also, trace can return the normal of the surface, you could
> use that to place the base of objects in relation to the
> surface, IE eyelashes, or fur.
[...]

Awesome. This would be useful, for sure.

--QF

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