Function score

docs/app/js/sanddance-app.js:137877–137880

(node)

    return dr > 0 && dr * dr > dx * dx + dy * dy;
}
function score(node) {
    var a = node._, b = node.next._, ab = a.r + b.r, dx = (a.x * b.r + b.x * a.r) / ab, dy = (a.y * b.r + b.y * a.r) / ab;
    return dx * dx + dy * dy;
}
function Node(circle) {
    this._ = circle;
    this.next = null;