function square_vector(width, height, rounding = 0) = [
    [-width / 2 + rounding, height / 2 - rounding],
    [width / 2 - rounding, height / 2 - rounding],
    [-width / 2 + rounding, -height / 2 + rounding],
    [width / 2 - rounding, -height / 2 + rounding],
];