pub fn extrude_curves_to_sheet(
curves: &[NurbsCurve],
direction: Vec3,
distance: f64,
) -> Result<Vec<BrepSolid>, KernelRefusal>Expand description
The sheet a chain of curves sweeps as it slides by distance along
direction: one face per curve (the curve times the slide), each a sheet
of its own, in the chain’s order. Every face’s normal is its curve’s
direction crossed with the slide’s, so the faces of a chain run head to
tail have their normals on one side of the sheet, as
thicken_sheet_faces needs them; run the chain the other way for the
other side.