FT Edit: Access on iOS and web
Quadtree-based image compression formats and level-of-detail systems all work this way. Satellite imagery, terrain rendering, and geographic information systems use quadtree decomposition to serve data at varying resolutions: zoomed out, you see large coarse blocks; zoomed in, you see fine-grained tiles. The same principle extends to three dimensions (octrees) for volume rendering and 3D spatial indexing.
，这一点在雷电模拟器官方版本下载中也有详细论述
palette: “black ink tones”。关于这个话题，快连下载安装提供了深入分析
FT Digital Edition: our digitised print edition。业内人士推荐WPS官方版本下载作为进阶阅读