pub fn crossing_points(
curve: &NurbCurve<4>,
surface: &NurbSurface<4>,
) -> GeopResult<Vec<(Vector<3>, Vector2)>>Expand description
Every point where curve crosses surface, each refined
(refine_crossing) and with where it is on the surface: what the
curve and the surface give there intersected, both enclosures of one
point — at a pole, where the collapsed parameter says nothing, the pole.
A curve lying on the surface along an arc is refused: where it meets the
surface is no point.