Function triangulate_with_chords 

pub fn triangulate_with_chords(
    model: &Model,
    shape: &Shape,
    deflection: Deflection,
    tol: Tolerances,
) -> OgeomResult<(Triangulation, EdgeChords)>

As triangulate, with the edge chords the faces agreed on: what edge_chords_for answers for the same shape and deflection, without drawing every face a second time to find it.

Errors

As triangulate_face.