Please forgive me if I've totally messed things up here but this is my
first ever attempt at a "follow up" which Nieminen M. had mentioned.
And if it works this might be as good a place as any to place this post.


Ron Parker wrote:
> 
> On Sun, 25 Jul 1999 09:48:00 -0400, Dave Kreskowiak wrote:
> >In my experience, coincident surfaces tend to render a jittered imaged of
> >both textures, not a black spot.
> 
> Black spots (actually transparent spots) are fairly common.  They usually
> happen when you have an intersection involving coincident surfaces.  POV
> will find one or the other surface, then determine that that surface is
> "outside" the other surface and ignore that intersection.  It then goes
> on to find another intersection, but because it always starts looking at
> a distance of EPSILON along the ray from the last intersection, it misses
> the second surface at that point entirely, leaving a transparent spot
> that could show up as black under the right circumstances.

-- 
 omniVERSE: beyond the universe
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On Tue, 27 Jul 1999 15:41:48 -0500, Bob Hughes wrote:
>Please forgive me if I've totally messed things up here but this is my
>first ever attempt at a "follow up" which Nieminen M. had mentioned.
>And if it works this might be as good a place as any to place this post.

It didn't work.  It might look like it did, but it didn't.  You need to
set the Followup-To: header or it will default to sending followups
back to newusers.  slrn makes this easy; I don't know how easy it is with
Netscape.

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