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.
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，更多细节参见雷电模拟器官方版本下载
FT Edit: Access on iOS and web。safew官方版本下载对此有专业解读
Implement the package with the specific functional requirements and design goals; afterwards, create benchmarks with specific matrix sizes that are representative of typical use cases