RDP

A Rust implementation of the Ramer–Douglas-Peucker line simplification algorithm.

Also available from crates.io

FFI

The shared library exposes a FFI: simplify_linestring_ffi.
Call it with 2 arguments:

• A C-compatible struct containing the following:
  • data: a void pointer to a 2D array of double-precision floats: `[[1.0, 2.0], [3.0, 4.0], [5.0, 6.0]]``
  • len: a size_t denoting the length of the array (i.e. 3, above)
• A precision parameter, double_precision float. E.g. 1.0

The return type is the same struct as above, containing the simplified linestring coordinates.

Freeing FFI Memory

Callers must call drop_float_array(), passing the returned struct in order to free the memory that the shared library has allocated. Failure to do so will result in memory leaks.

License

MIT