pub unsafe extern "C" fn manifold_cross_section_hull_polygons(
mem: *mut c_void,
ps: *mut ManifoldPolygons,
) -> *mut ManifoldCrossSection
pub unsafe extern "C" fn manifold_cross_section_hull_polygons(
mem: *mut c_void,
ps: *mut ManifoldPolygons,
) -> *mut ManifoldCrossSection