bounding_box ( xyz_list )

List must have at least one point.

fill_occupancy_grid (
        xyz_list,
        xyz_origin,
        xyz_step,
        occup,
        )

solvent_excluded_surface (
        xyz,
        r,
        probe_radius=1.4,
        vertex_density=2.0,
        )

smooth_vertex_positions (
        varray,
        tarray,
        frac,
        iterations,
        )

Move each vertex towards average position of other connected vertices to get smoother surface.

surface_points (
        xyz_list,
        resolution,
        density_threshold,
        smoothing_factor,
        smoothing_iterations,
        )