S2 Geometry | S2Geometry

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2021-08-26 21:30:07

A unique feature of the S2 library is that unlike traditional geographic information systems, which represent data as flat two-dimensional projections (similar to an atlas), the S2 library represents all data on a three-dimensional sphere (similar to a globe). This makes it possible to build a worldwide geographic database with no seams or singularities, using a single coordinate system, and with low distortion everywhere compared to the true shape of the Earth. While the Earth is not quite spherical, it is much closer to being a sphere than it is to being flat!

If you want to learn more about the library, start by reading the Overview and QuickStart document, then read the introduction to the basic types

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