patterns — drift

def g06_drift(rng):
    """Mesh gradient under heavy noise warp. Marbling, still one square per cell."""
    steps = rng.randint(6, 8)
    c = Canvas(rng.choice([30, 40]), _pal(rng), steps, "drift", "mosaic")
    c.ground_from(Field(rng, "mesh", warp=rng.uniform(0.7, 1.0), steps=steps))
    return c