Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.
The technology most people use only as a chatty tool for daily tasks is reportedly aiding US military aggression. And there is not much we can do about it
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Фото: Keystone Press Agency / Global Look Press
18:10, 3 марта 2026ПутешествияЭксклюзив
2026-02-22 21:04:33 +01:00