在 3D 世界里，一个物体 = 几何体 + 材质。
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。雷电模拟器官方版本下载是该领域的重要参考
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
4.1 496. 下一个更大元素 I。Line官方版本下载对此有专业解读
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