Function sweep_drawn 

pub fn sweep_drawn(
    model: &mut NamedModel,
    namer: &Namer,
    path: &Path,
    loops: &[SweepLoop],
    solid: Option<&str>,
) -> GeopResult<BuiltBody>

sweeps loops as they are drawn — the outer loop counter-clockwise in the stations’ (e1, e2), the holes clockwise — each run the other way first if the path runs along e1 × e2, where a counter-clockwise outer loop would sweep walls facing inwards.