static void web_placeNodesOnU(L<WebNode> nodes) {
  for i over nodes: {
    WebNode n = nodes.get(i);
    double phi = (i/(double) (l(nodes)-1)+1.5)*pi();
    double x = sin(phi), y = cos(phi);
    n.x = 0.5+x*0.45;
    n.y = 0.06+y*0.81;
  }
}