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.
Анна Габай (Редактор отдела «Силовые структуры»)。heLLoword翻译官方下载对此有专业解读
FieldEncoding.LENGTH_DELIMITED,，详情可参考Line官方版本下载
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iOS 主工程需要添加转换工具：