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.
public class KAccount(。关于这个话题，safew官方版本下载提供了深入分析
Fast forward to late 2025, and my incomplete notes sometimes show up on the first page of search results for “sdf fonts”[1]! Surely that isn’t the best page on the topic. It would be better to point to library documentation or maybe one of the research papers about the topic. My page isn’t that good.，详情可参考WPS下载最新地址
Culture Secretary Lisa Nandy called the broadcast of the slur "completely unacceptable and harmful", adding she had spoken to director general Tim Davie and that the "BBC must ensure that this never happens again".