Function snapped_distance2 

pub fn snapped_distance2(
    curve: &Curve2,
    distance: Scalar,
    window: Scalar,
) -> GeomResult<Scalar>

The distance a station at distance along a 2D curve, with the seam-snapping window, is read at; see the module documentation.

Errors

A negative or non-finite window, two seams within it, a seam straddling its edge, and a seam whose distance cannot be certified, by name.