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.
第三十条 核反应堆的选址、设计、建造、调试、运行和管理等应当遵守有关法律、行政法规的规定。
。关于这个话题，旺商聊官方下载提供了深入分析
Automation: Rinsing It in Seconds
（三）违反国家规定，对计算机信息系统中存储、处理、传输的数据和应用程序进行删除、修改、增加的；