pub unsafe extern "C" fn manifold_mirror(
mem: *mut c_void,
m: *mut ManifoldManifold,
nx: f64,
ny: f64,
nz: f64,
) -> *mut ManifoldManifold
pub unsafe extern "C" fn manifold_mirror(
mem: *mut c_void,
m: *mut ManifoldManifold,
nx: f64,
ny: f64,
nz: f64,
) -> *mut ManifoldManifold