Function fix_face_pcurves 

pub fn fix_face_pcurves(
    model: &mut Model,
    face: &Shape,
    cap: f64,
    tol: Tolerances,
) -> OgeomResult<FixedTrims>

Give a face’s pcurve-less edges the trims projection can honestly fit.

The reader heals boundary slop up to a millimetre and hands what it refuses over in untrimmed_faces, face shape included; this is the instructed follow-up: the same projection fit, at the cap the caller chooses. Each fitted edge’s tolerance widens to the offset actually measured, so the model says what it knows; an edge past the cap is reported, not touched.

Errors

OgeomError::Construction if face is not a face, holds no surface, or an edge carries no space curve to project.