The edge mirror of a face's NURBS form: Edge::nurbs keeps the NURBS SMLib holds a conic as, and
the edge's interval and its pcurves' parameter are its. Edge::parameters is the curve every
evaluation at a parameter uses; curve says what the edge is. Nothing writes the form yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
