using tetrahedron_type = struct Tetrahedronusing triangle_type = struct Triangletriangle_area(triangle_type t) -> Ttetrahedron_centroid(tetrahedron_type t) -> vec3triangle_centroid(triangle_type t) -> vec3hull_panel_set(global ship_hull_panel_t * panel, triangle_type base, bool wet, bool waterline, bool above, int index) -> voidtetrahedron_signed_volume(tetrahedron_type t) -> Ttriangle_normal(triangle_type t) -> vec3tetrahedron_base(tetrahedron_type t) -> triangle_type