patterns — dither

def g03_dither(rng):
    """Ordered 8x8 Bayer dither between adjacent ramp steps."""
    steps = rng.randint(4, 6)
    c = Canvas(rng.choice([40, 50]), _pal(rng), steps, "dither", "mosaic")
    c.ground_from(Field(rng, rng.choice(["linear", "mesh"]),
                        warp=rng.uniform(0.1, 0.35), steps=steps), dither=True)
    return c