pub trait FacePlane: GraphData where
Self::Vertex: AsPosition,
VertexPosition<Self>: FiniteDimensional<N = U3>, {
fn plane<B, T>(ring: T) -> Result<Plane<VertexPosition<Self>>, GraphError>
where
B: Reborrow,
B::Target: AsStorage<Arc<Self>> + AsStorage<Vertex<Self>> + Consistent + Parametric<Data = Self>,
T: ToRing<B>;
}