ACIS - parameters on a spherical surface

[Roman Voznyuk]

>My problem is, if I got a {u,v} coordinate, and I want to find the
>corresponding 3D position on this spherical surface. The ACIS interface
will,
>occasional, return a point which is not at the expected location, because
there
>are two points on this surface have the same {u,v} value.
Only one point corresponds to (u,v) pair in ACIS surfaces.  For me
everything works fine even for sphere. Nevertheless ,if you want opposite
point try negate parameter or just calculate it without ACIS api.




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