Function game::edit::traffic_signals::draw_multiple_signals

fn draw_multiple_signals(
    ctx: &mut EventCtx, 
    app: &App, 
    members: &BTreeSet<IntersectionID>, 
    idx: usize, 
    hovering: Option<IntersectionID>, 
    translations: &Vec<(f64, f64)>
) -> GeomBatch