Leroy Whetstone <lrw### [at] joplincom> wrote:
> I'd put the inside_vector at the rough center of the Mesh.

The inside_vector is just a direction, not a point, so you can't "put it at the
rough center of the mesh".

It's the direction in which POV shoots a ray from points to test whether they
are inside the mesh or not (which is something POV needs for CSG).
Theoretically, any direction should do for a closed mesh, but it's exposed to
the user to allow for tweaking in case artifacts show up. As a matter of fact,
it doesn't make sense to specify it at all for a non-closed mesh.

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