Wasn't it gregjohn who wrote:
>I would like a macro which is like Mike Williams' sweep spline, only with
>this added feature.  My  motivation is for character modelling
>(http://flickr.com/photos/pterandon/91637417/ ).
>
>The current macro has a circular cross section all the way through it.

It's only a circle if you pass it a circular "Shape" spline. You can use
any spline, open or closed, for the cross section.

>  What
>I would like is one that allows for assymetric ellispses  or other closed
>splines along its path.
>
>Here's one possible set of inputs:
>i) a spline of N points
>ii) a array of N elements, each of which is a four dimensional vector, and
>those four data represent the length away from the center of the spline in
>i), only in the (if I'm saying it right) +u, -u, +v, and -v axes.  Right
>now the macro returns what I'm calling u and v as all being a constant
>radius from the center.
>
>Here's another possible input set:
>i) Four splines of N points, and you can count on the user being fairly
>responsible in not having them cross over each other.  Between point N-a
>and N-b, the macro returns, well, something like that in the first example.
>
>Here's another possible input set:
>i) a spline of N points
>ii) an array of M elements, each of which is a closed loop spline of L
>points.  As the mesh is built, the Closed Loop is swept out along the
>spline in i).
>
>Thanks in advance.

Can you explain one of those in a bit more detail? I can't seem to work
out what you're getting at.

-- 
Mike Williams
Gentleman of Leisure

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