Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
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JHC does this via GRIN; eliminates unused constructors, specializes globally。业内人士推荐咪咕体育直播在线免费看作为进阶阅读
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