PolyCurve.OffsetMany should do the trick. Offset first outward by a big distance, say the diagonal of the domain, that will remove the details. Then offset inward by the same distance less the real desired offset.
PolyCurve.OffsetMany should do the trick. Offset first outward by a big distance, say the diagonal of the domain, that will remove the details. Then offset inward by the same distance less the real desired offset.