postOrderTraverse method
Visits each node in the quadtree in post-order traversal invoking the specified callback.
Implementation
void postOrderTraverse(PostOrderCallback callback) {
final List<Quadtree<O>> quadtrees = [this];
final List<Quadtree<O>> next = [];
while (quadtrees.isNotEmpty) {
final quad = quadtrees.removeLast();
quadtrees.addAll(quad.nodes.values);
next.add(quad);
}
while (next.isNotEmpty) {
final quad = next.removeLast();
callback(quad.bounds);
}
}