#!/usr/bin/env python3
import pathlib
import sys

import bpy


def main(output: pathlib.Path) -> None:
    bpy.ops.wm.read_factory_settings(use_empty=True)
    data = bpy.data.metaballs.new("WebGapMetaBall")
    data.resolution = 0.2
    data.render_resolution = 0.1
    first = data.elements.new()
    first.co = (-0.65, 0.0, 0.4)
    first.radius = 0.75
    first.size_x = 1.1
    first.size_y = 0.9
    first.size_z = 1.2
    second = data.elements.new()
    second.co = (0.65, 0.0, 0.4)
    second.radius = 0.55
    second.size_x = 0.8
    second.size_y = 1.05
    second.size_z = 0.95
    obj = bpy.data.objects.new("WebGapMetaBallObject", data)
    bpy.context.collection.objects.link(obj)
    bpy.ops.wm.save_as_mainfile(filepath=str(output.resolve()), check_existing=False, compress=True)


if __name__ == "__main__":
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --python M16-GAP-00015.py -- OUTPUT")
    main(pathlib.Path(arguments[0]))