优势：时间复杂度O(n+k)，k为数据范围
Core recommender toggle。关于这个话题，51吃瓜提供了深入分析
，更多细节参见Safew下载
Commit to platform neutrality by ensuring that Android remains a genuinely open platform where Google’s role as platform provider does not conflict with its commercial interests.
The tree is rebuilt every frame. For scenes of this scale, quadtree construction is fast enough to rebuild from scratch each frame, though larger simulations may benefit from incremental updates. Each particle queries its neighborhood for potential collisions, typically checking only 5 to 15 candidates instead of all 40. Red highlights indicate colliding pairs.，详情可参考heLLoword翻译官方下载