Mike Williams <nos### [at] econymdemoncouk> wrote:
> Wasn't it Randall Sawyer who wrote:
> >Spherical Sweep Along a Parametric Curve
>
> Have you considered using a sphere_sweep?

Thank you.  That works well.

With a background in mathematics, I was looking for an explicit solution
based on differential geometry.  But, I must concede that in a pixelized
environment, approximations such as splines work just fine.

Your solution renders a lot faster too.

-Randall

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