Function surface_surface 

pub fn surface_surface(
    a: &SurfaceGeometry,
    b: &SurfaceGeometry,
    tol: Tolerances,
) -> OgeomResult<Meeting>

Where two surfaces meet, when that has a closed form.

Errors

OgeomError::NotDone if this pair has no closed form, which is a statement about the pair, not a failure to compute. The general marching intersector is what answers those, and it is gated on the benchmark this module makes possible.