1 public class TreeIndexNode {
4 TreeIndexNode children[];
9 // TreeIndexNode right;
11 public TreeIndexNode(LeafNodeData data) {
15 public void advance() {
17 data.vel += data.acc + 10;
20 public void computeForce(TreeIndexNode root) {
26 private void recurseForce(TreeIndexNode nn) {
31 if (nn.data == null) { // nn is cell
33 for(int i=0;i<nn.children.length;i++) {
34 recurseForce(nn.children[i]);
37 // } else { // nn is body
39 data.acc += drPos + nn.mass;