Function chart_breaks 

pub fn chart_breaks(
    model: &Model,
    face: &Shape,
    kept: &dyn Fn(&Shape) -> bool,
    tol: Tolerances,
) -> OgeomResult<Vec<String>>

Where a face’s boundary does not close in its surface’s chart, each in a sentence; none where it closes. The test check makes of every face, for a builder asking it of the faces it made. A wire kept names is one the builder took over as it stood, and is not walked.

Errors

OgeomError::Dangling if the face names a surface not in the model.