I got the same problem when I tried intersecting an isosurface and transparent box
with ior. The isosurface was using noise3d, by the way. I haven't tried it without
the noise3d yet.

Bob Hughes wrote:

> Hate to think it could really be one but I can't remedy away a strange
> boundary along the contact of a isosurface (islands) and regular box (water).
> Images, as well as some description, can be seen at p.b.i. subject:
> isosurfaced islands and shoreline problem.
> I can only hope I'm wrong about it being a true big and instead turn out to be
> something curable through isosurface settings.
> To sum it up, an isosurface (having noise3d() if that could be partly to
> blame) which is embedded into a box with a filtered pigment shows a boundary
> line along the intersection of the two objects.
> Oh, and in WinMegaPov 0.5a.  Almost forgot to mention that.
>
> Bob
> --
> omniVerse http://users.aol.com/persistenceofv/all.htm

--
Samuel Benge

E-Mail: STB### [at] aolcom

Visit my isosurface tutorial at http://members.aol.com/stbenge

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