Cousin Ricky <ric### [at] yahoocom> wrote:
> I have a couple of suggestions. If you know the surface radius of each
> component, you can create a union of spheres, and take the center of the
> union. Function RE_fn_Blob_surface_radius() in roundedge.inc can
> calculate the surface radii.
yes, I can specify the radii, so, excellent, thanks, will check out the code.
> Alternatively, you can go brute force with trace() or inside(), and take
> the center of all the successful hits. inside() would take longer than
> trace(), due to being volumetric, but it would allow you to compute a
> rough center of gravity, rather than just computing the center of the
ah, there's the rub. what I want, ideally, is to find the one point in a blob
which, when placed at origin, would allow me to rotate "the hell out of it" :-).
unfortunately my maths/knowledge is .. abysmal, I do not (even) know whether
that specific point is the centre of the extents (what I meant by geometric
centre) or the centre of gravity.
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