Why contour is not working?

[Hristo_Handjiiski]

Ellipsoid.gh (14.5 KB)

[ferry59]

The revolution is somewhat overtwisted, if you split this curve, it works.

RE Ellipsoid.gh (14.3 KB)

[davidcockey]

Moved to Grasshopper category.

[Hristo_Handjiiski]

Thank you you for the quick response!