"Warp" wrote on the webpage:
> If we want to be more sure, we could also check if we are hitting
> the "inside" of the surface at this closest intersection point and
> only then remove it. This might be necessary for non-closed surfaces.
>
> This algorithm will eliminate the shadowline artifact without
> eliminating shadowing and self-shadowing of the object.

> It has its defects, though. For example, if the camera is inside the
> object in question (and all the light sources are outside), we would
> expect to get a completely shadowed view of the surface. However, if
> the surface has perturbed normal, we will see some illuminated parts
> of the surface.

Couldn't this be avoided this way: Instead of removing the intersection
point if the inside of it is hit, remove it if the opposite side of it is
hit than of the current point. That way it works the same way no matter if
the camera is inside or outside of an object. Or would it just create some
new flaws?

Greetings,

Rune
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