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Content from color import Color import utime import display import urandom import leds gamma_table = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 14, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 33, 33, 34, 35, 36, 36, 37, 38, 39, 40, 40, 41, 42, 43, 44, 45, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 86, 87, 88, 89, 91, 92, 93, 95, 96, 97, 99, 100, 101, 103, 104, 105, 107, 108, 110, 111, 113, 114, 115, 117, 118, 120, 121, 123, 125, 126, 128, 129, 131, 132, 134, 136, 137, 139, 140, 142, 144, 145, 147, 149, 151, 152, 154, 156, 158, 159, 161, 163, 165, 166, 168, 170, 172, 174, 176, 178, 179, 181, 183, 185, 187, 189, 191, 193, 195, 197, 199, 201, 203, 205, 207, 209, 211, 213, 215, 217, 220, 222, 224, 226, 228, 230, 232, 235, 237, 239, 241, 244, 246, 248, 250, 253, 255] cols = [[0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0]] i = 0 num_leds = float(len(cols)) disp = display.open() leds.dim_top(4) def get_rand_colour(j): spans_per_spectrum = 0.5 cycles_per_loop = 1200.0 space_offset = (j / (num_leds-1)) * spans_per_spectrum time_offset = (i % cycles_per_loop) / cycles_per_loop total_offset = (space_offset + time_offset) % 1.0 # total_offset = time_offset # print("utime {} timeperloop {} utime%timeperloop {} uti%timeper/timeper {}".format(utime.time(), time_per_loop, utime.time()%time_per_loop, (utime.time()%time_per_loop) / time_per_loop)) return [total_offset * 365, float(urandom.randrange(0,500)) / 1000.0 + 0.5, 1.0] def decay(x, factor): x[2] *= factor x[0] += 4 return x def draw_line(x, num_cols): pixels_per_led = 160 / num_cols disp.rect(int(x * pixels_per_led), 0, int((x+1)*pixels_per_led), 80, col=Color.from_hsv(*cols[x])) def sparkle(sparkle_prob, decay_factor): global cols cols = list(decay(col, decay_factor) for col in cols) if urandom.randrange(0,101) < sparkle_prob * 100: index = urandom.randrange(0,len(cols)) # for index in range(len(cols)): cols[index] = get_rand_colour(index) for j, col in enumerate(cols): leds.prep_hsv(j, col) leds.update() while True: sparkle(0.5, 0.97) if i % 4 == 0: disp.clear() for j in range(11): draw_line(j, 11) disp.update() i += 1