Offline Maps SDK for iOS & Android

GLMap is a cross-platform offline vector maps SDK for iOS and Android. Add fast maps, offline routing (GLRoute) and geocoding (GLSearch) with Swift or Kotlin.

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Faster than earcut: triangulating 3.7M map polygons in 489 ms

2026232 points40 comments Software Engineering details

We published the triangulator of our map engine as earstrip, an ISC-licensed C++ and WebAssembly library. How it came to be: the ear clipper rebuilt one idea at a time and timed on 3.7 million polygons of real map data.