"Tim Nikias" <tim### [at] gmxde> wrote in message
news:3CCA9878.760010E0@gmx.de...
>
> But I tried with max_trace_level 256, and I still get
> those black edges on the top-inside of the vase. What
> did you exactly do?
>
I think that some of this is natural behavior. I tried displaying just the
Lathe_Outside object with pigment {rgbt 1} interior {ior 1.56} and nothing
else. I still saw some dark spots. The spots can be minimised by specifying
fade_color at .5.
I thought that the spots might be caused by reversed normals or crossed
triangles, but there is none of that in your mesh except for the bottom/top
intersection which you already took care of.
I do know that the default max_trace_level will give a max reached warning.
I closed the mesh by connectiong all of the meshes and then connecting the
outside pinhole with the inside pinhole. This gave a torus type mesh.
I'm sure you also noticed that the defaut aa settings are not sufficient for
the vase.
-Shay
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