Alain <aze### [at] qwertyorg> wrote:

>
> The end point of the firts spline must coincide with the first point of
> the second one. The last control point of the first spline must coinside
> with the secont point of the second spline. The first control point of
> the second spline must coinside with the second to last point of the
> first spline.
>
> That way, the slope and curvature will continue smoothly across the seam.
>
> For the spline to closely follow the path of a circle, you need to
> increase the number of points. You can place them evenly at constant
> angle using sin and cos.
> You'll probably need at least 10 points in a quarter circle, plus the
> control points.
>
>


Thanks. Ultimately, I'm trying to hand-roll procedurally generated heads. I'd
use a lathe for the cap and then MSM's or COON's for "strips" around the head.
Knowing I could put in arbitrary values and keep them smooth in this way will be
of great help.  Didn't explicitly need spheres, per se.  thanks.

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