pub fn fit_points_2d_at_closed(
parameters: &[f64],
points: &[Point2],
degree: usize,
tolerance: f64,
tol: Tolerances,
) -> OgeomResult<Fitted<BSpline2d>>Expand description
As fit_points_2d_at, with the loop’s join made C1.
The chart image of a closed curve either returns to its first point or, crossing its surface’s seam, to that point one period over; both are the same loop, and the join constraint holds either way because it speaks derivatives, not positions.
§Errors
As fit_points_2d_at.