Function rdp::simplify_visvalingam_ffi [−] [src]

pub extern fn simplify_visvalingam_ffi(coords: Array,
                                       precision: c_double)
                                       -> Array

FFI wrapper for visvalingam

Callers must pass two arguments:

  • a Struct with two fields:
    • data, a void pointer to an array of floating-point point coordinates: [[1.0, 2.0], …]
    • len, the length of the array being passed. Its type must be size_t
  • a double-precision float for the epsilon

Implementations calling this function must call drop_float_array with the returned c_char pointer, in order to free the memory it allocates.

Safety

This function is unsafe because it accesses a raw pointer which could contain arbitrary data