> I just converted the scene geometry to an iso_rcsg function
> and this way can check any time how near the different balls
> are to the surface.

Interesting project you're having! Forgive my ignorance but how do you get
an output of the isosurface evaluation, for a point within the bounding
object? With the geometry in your example, is it really faster than using
primitives and individual col. testing?

Regards,
Hugo

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