Function find_plane 

pub fn find_plane(
    model: &Model,
    shape: &Shape,
    tol: Tolerances,
) -> OgeomResult<Option<Plane>>

The plane a shape lies in, if it lies in one.

Fitted to the shape’s geometry and then checked: the fit always produces a plane, and the answer is only useful if every sample is within tolerance of it. None means the shape is not planar, which is a fact about the shape rather than a failure.

Curved edges are sampled along their length, not only at their ends. A circular arc’s endpoints lie in a great many planes that the arc does not.

Errors

OgeomError::Dangling if a handle fails to resolve.