pub fn classify(
bounds: Bounds,
model: Mat4,
frustum: Option<Frustum>,
eye: Option<Vec3>,
settings: VisibilitySettings,
) -> Visibilitypub fn classify(
bounds: Bounds,
model: Mat4,
frustum: Option<Frustum>,
eye: Option<Vec3>,
settings: VisibilitySettings,
) -> Visibility