Function largest_fillet_distances 

pub fn largest_fillet_distances(
    model: &Model,
    solid: &Shape,
    edge: &Shape,
    face: &Shape,
    on_face: f64,
    on_other: f64,
    up_to: f64,
    tol: Tolerances,
) -> OgeomResult<Option<f64>>

The largest common scale up to up_to of an asymmetric round’s two distances at which fillet_edge_distances on edge is not refused for a contact set back past its face’s side: the round meeting face s * on_face from the edge and the other face s * on_other from it. None where no scale leaving both distances longer than the confusion distance fits.

Read from the seat, without building a band, as largest_chamfer_distance reads a bevel’s legs: each contact walks square to the edge, its own distance per unit of scale into its face, and the answer is where the first walk leaves its face, a confusion distance short. On a rim the cap’s contact stops short of the axis. The answer passes the round’s own check.

Errors

OgeomError::Construction if up_to or a distance is not a usable length, and as fillet_edge_distances where the seat is refused at any scale; OgeomError::NotDone where the scale read from the seat does not pass the round’s own check.