gistfile1.rs

fn linked_face(vertexs: &[Rc<RefCell<Vertex>>], face: UnlinkedFace) -> Option<RefCell<Face>> {
    let a = match vertexs.slice(face.a, face.a + 1).iter().next() {
        Some(x) => x.clone(),
        None => return None,
    };
    let b = match vertexs.slice(face.b, face.b + 1).iter().next() {
        Some(x) => x.clone(),
        None => return None,
    };
    let c = match vertexs.slice(face.c, face.c + 1).iter().next() {
        Some(x) => x.clone(),
        None => return None,
    };
    let d = match vertexs.slice(face.d, face.d + 1).iter().next() {
        Some(x) => x.clone(),
        None => return None,
    };
    Some(RefCell::new(Face { a: a, b: b, c: c, d: d }))
}