stl_io is crate for reading and writing STL (STereoLithography) files. It can read both, binary and ascii STL in a safe manner. Writing is limited to binary STL, which is more compact anyway.
Read STL file:
rust
use std::fs::OpenOptions;
let mut file = OpenOptions::new().read(true).open("mesh.stl").unwrap();
let stl = stl_io::read_stl(&mut file).unwrap();
Write STL file:
rust
use std::fs::OpenOptions;
let mesh = [stl_io::Triangle { normal: [1.0, 0.0, 0.0],
vertices: [[0.0, -1.0, 0.0],
[0.0, 1.0, 0.0],
[0.0, 0.0, 0.5]]}];
let mut file = OpenOptions::new().write(true).create_new(true).open("mesh.stl").unwrap();
stl_io::write_stl(&mut file, mesh.iter()).unwrap();
For more information, check out the Documentation.