pub unsafe extern "C" fn manifold_polygons_get_simple(
mem: *mut c_void,
ps: *mut ManifoldPolygons,
idx: c_int,
) -> *mut ManifoldSimplePolygon
pub unsafe extern "C" fn manifold_polygons_get_simple(
mem: *mut c_void,
ps: *mut ManifoldPolygons,
idx: c_int,
) -> *mut ManifoldSimplePolygon