Google Encoded Polyline encoding & decoding in Rust.
This crate uses Coord and LineString types from the geo-types crate, which encodes coordinates in (x, y) order. The Polyline algorithm and first-party documentation assumes the opposite coordinate order. It is thus advisable to pay careful attention to the order of the coordinates you use for encoding and decoding.
C-compatible FFI bindings for this crate are provided by the polyline-ffi crate.