Function layout_graph 

pub fn layout_graph(
    nodes_meta: &[(String, String)],
    graph: &LinkGraph,
    params: LayoutParams,
) -> GraphData

Deterministic force-directed layout. nodes_meta: (slug, title) in a STABLE order (doc input order). graph: the already-built LinkGraph. Returns a GraphData with positions clamped inside [padding, width-padding] x [padding, height-padding].