Hi Peer,

> I don't understand what this means. To me a conic section means a curve.

Yes you're correct, sorry I used the wrong term there.


> I guess I could draw 2 pointObjects snapped to the surface of the face, dropPoint to
> get uv coordinate points, evaluate normal at each of the uv points, extend a line
> along each normal, and find the intersection = center. Is that the best way?

Yes, intersecting 2 surface normals would be a way to get the center currently.

You can get 2 UV coordinates using the domain boundaries instead of dropping points.

var minpt = face.domainMin; // 2d point for UV domain min corner.
var maxpt = face.domainMax; // 2d point for UV domain max corner.

Just don't use the min and the max both directly because those will be at each pole and those normals will be colinear.

So maybe something like 1/3 between them for one point and 2/3 between for the other one.

- Michael