def pattern_2():
global p2_color, p2_delta, p2_direction, p2_length, p2_x, p2_y
if p2_length == 0:
p2_length = urandom.randint(int(led.length_x / 4), int(led.length_x * 3/4))
while True: # avoid 180 degree turns
direction = urandom.randint(0, 3)
if direction != (p2_direction + 2) % 4:
p2_direction = direction
break
color = led.random_color() # smooth transition
delta_red = (color[0] - p2_color[0]) / p2_length
delta_green = (color[1] - p2_color[1]) / p2_length
delta_blue = (color[2] - p2_color[2]) / p2_length
p2_delta = (delta_red, delta_green, delta_blue)
if p2_direction == 0: p2_x = (p2_x + 1) % led.length_x
if p2_direction == 1: p2_y = (p2_y + 1) % led.length_x
if p2_direction == 2: p2_x = (p2_x - 1) % led.length_x
if p2_direction == 3: p2_y = (p2_y - 1) % led.length_x
red = p2_color[0] + p2_delta[0]
green = p2_color[1] + p2_delta[1]
blue = p2_color[2] + p2_delta[2]
p2_color = (red, green, blue)
led.pixel_xy(p2_color, p2_x, p2_y, write=True)
p2_length -= 1
def pattern_0():
global p0_setup, p0_index, p0_colors, p0_color, p0_time_next
if p0_setup:
p0_setup = False
led.dim = 1.0
for p0_x in range(led.length):
p0_y = 0
led.pixel_xy(p0_color, p0_x, p0_y, write=True)
if ticks_ms() > p0_time_next:
p0_time_next = ticks_ms() + 1000
p0_index = (p0_index + 1) % len(p0_colors)
p0_color = led.colors[p0_colors[p0_index]]