Function intersects

external/.d3.js:13439–13442

(a, b)

}

function intersects(a, b) {
  var dr = a.r + b.r - 1e-6, dx = b.x - a.x, dy = b.y - a.y;
  return dr > 0 && dr * dr > dx * dx + dy * dy;
}

function score(node) {
  var a = node._,