force method

Implementation

@override
void force([double alpha = 1]) {
  int n = _nodes.length;
  Quadtree<GraphNode> tree = Quadtree.simple<GraphNode>(DefaultFun.x, DefaultFun.y, _nodes).visitAfter(_accumulate);
  _alpha = alpha;
  for (int i = 0; i < n; ++i) {
    _node = _nodes[i];
    tree.visit(_apply);
  }
}