def sconf_one_everywhere(ca: CellularAutomata): return ca.constfilled(1.0)
def sconf_center_black_dot(ca: CellularAutomata): return ca.pointfilled(ca.constfilled(1.0), point_value=0.0)
def sconf_zero_everywhere(ca: CellularAutomata): return ca.constfilled(0.0)