Function swept_disk

pub fn swept_disk(
    path: &[Point3],
    radius: Scalar,
    inner_radius: Option<Scalar>,
    fillet_radius: Option<Scalar>,
    tolerance: Tolerance,
) -> GeomResult<TriMesh>

Sweep a disk along a directrix, optionally hollow.

fillet_radius is refused rather than ignored. The model’s own docs say a consumer that cannot round corners must refuse a Some, because silently sharpening a pipe run produces geometry that builds, renders, and is wrong.