"""Cyklande scenarier: plasma -> vortex (spiral) -> tunnel (sug-in) -> glitter -> text '6446.se' med skimmer """ import machine, neopixel, time, random, math PIN = 4 W, H = 8, 8 NUM = W * H np = neopixel.NeoPixel(machine.Pin(PIN), NUM) DIM = 24 # tak för "ljusa" effekter DIM_BG = 4 # tak för bakgrundsskimmer bakom text CX, CY = 3.5, 3.5 def xy(x, y): return y * W + x def clear(): for i in range(NUM): np[i] = (0, 0, 0) def wheel(pos, peak=DIM): """0-255 -> RGB med tak `peak` per kanal.""" pos &= 255 third = peak * 3 if pos < 85: return (pos * third // 765, (255 - pos * 3) * peak // 765, 0) elif pos < 170: pos -= 85 return ((255 - pos * 3) * peak // 765, 0, pos * third // 765) else: pos -= 170 return (0, pos * third // 765, (255 - pos * 3) * peak // 765) def scale(c, factor): return (int(c[0] * factor), int(c[1] * factor), int(c[2] * factor)) def bg_color(hue, peak=6): """Som wheel men minst 1 per kanal — bakgrund blir alltid fylld, aldrig svart.""" pos = hue & 255 span = peak - 1 if pos < 85: r = 1 + pos * span // 85 g = 1 + (85 - pos) * span // 85 b = 1 elif pos < 170: pos -= 85 r = 1 + (85 - pos) * span // 85 g = 1 b = 1 + pos * span // 85 else: pos -= 170 r = 1 g = 1 + pos * span // 85 b = 1 + (85 - pos) * span // 85 return (r, g, b) # ================================================================= # Effekt 1: plasma (klassisk demoscene — flytande färgmoln) # ================================================================= def plasma(duration_ms=9000): t0 = time.ticks_ms() frame = 0 while time.ticks_diff(time.ticks_ms(), t0) < duration_ms: for y in range(H): for x in range(W): v = (math.sin(x * 0.7 + frame * 0.10) + math.sin(y * 0.9 + frame * 0.13) + math.sin((x + y) * 0.5 + frame * 0.08) + math.sin(math.sqrt((x - CX) ** 2 + (y - CY) ** 2) + frame * 0.15)) hue = int(v * 40 + frame * 2) & 255 np[xy(x, y)] = wheel(hue) np.write() frame += 1 time.sleep_ms(35) # ================================================================= # Effekt 2: vortex — roterande spiralarmar # ================================================================= def vortex(duration_ms=9000): t0 = time.ticks_ms() frame = 0 while time.ticks_diff(time.ticks_ms(), t0) < duration_ms: for y in range(H): for x in range(W): dx, dy = x - CX, y - CY r = math.sqrt(dx * dx + dy * dy) a = math.atan2(dy, dx) # hue följer vinkeln + spiraltvist beroende på radie + rotation över tid hue = int(a * 40 + r * 28 - frame * 6) & 255 # ljuspuls inåt så det känns som armar bright = 0.35 + 0.65 * (0.5 + 0.5 * math.sin(r * 1.6 - frame * 0.28)) np[xy(x, y)] = scale(wheel(hue), bright) np.write() frame += 1 time.sleep_ms(35) # ================================================================= # Effekt 3: tunnel — koncentriska ringar suger inåt # ================================================================= def tunnel(duration_ms=9000): t0 = time.ticks_ms() frame = 0 while time.ticks_diff(time.ticks_ms(), t0) < duration_ms: for y in range(H): for x in range(W): dx, dy = x - CX, y - CY r = math.sqrt(dx * dx + dy * dy) a = math.atan2(dy, dx) # ringar flyter inåt (negativ riktning), liten vridning för djupkänsla phase = frame * 0.45 - r * 1.7 + a * 0.4 bright = (0.5 + 0.5 * math.sin(phase)) ** 2 hue = int(r * 50 + frame * 3) & 255 np[xy(x, y)] = scale(wheel(hue), bright) np.write() frame += 1 time.sleep_ms(35) # ================================================================= # Effekt 4: glitter (random sparkles) # ================================================================= def sparkle(duration_ms=7000): state = [[0, 0.0] for _ in range(NUM)] t0 = time.ticks_ms() while time.ticks_diff(time.ticks_ms(), t0) < duration_ms: for _ in range(2): i = random.randint(0, NUM - 1) state[i][0] = random.randint(0, 255) state[i][1] = 1.0 for i in range(NUM): hue, inten = state[i] if inten > 0: np[i] = scale(wheel(hue), inten) state[i][1] = max(0.0, inten - 0.08) else: np[i] = (0, 0, 0) np.write() time.sleep_ms(40) # ================================================================= # Effekt 5: scrollande text "6446.se" med skimmer-bakgrund # ================================================================= FONT = { '6': ["01110", "10000", "10000", "11110", "10001", "10001", "01110"], '4': ["00010", "00110", "01010", "10010", "11111", "00010", "00010"], '.': ["00000", "00000", "00000", "00000", "00000", "00000", "01100"], 's': ["00000", "00000", "01110", "10000", "01110", "00001", "11110"], 'e': ["00000", "00000", "01110", "10001", "11111", "10000", "01110"], ' ': ["00000"] * 7, } def text_columns(text): cols = [] for ch in text: glyph = FONT.get(ch, FONT[' ']) char_w = len(glyph[0]) for cx in range(char_w): col = 0 for ry in range(7): if glyph[ry][cx] == '1': col |= (1 << ry) cols.append(col) cols.append(0) # mellanrum mellan tecken return cols def scroll_text_shimmer(text, text_color=(DIM, DIM, DIM), duration_ms=15000): cols = text_columns(text) t0 = time.ticks_ms() offset = -W frame = 0 while time.ticks_diff(time.ticks_ms(), t0) < duration_ms: # bakgrund: fyllt plasmaskimmer, varje pixel alltid färgad for y in range(H): for x in range(W): v = (math.sin(x * 0.55 + frame * 0.06) + math.sin(y * 0.7 + frame * 0.08) + math.sin((x + y) * 0.4 + frame * 0.05)) hue = int(v * 50 + frame * 2) & 255 np[xy(x, y)] = bg_color(hue, peak=6) # text ovanpå for x in range(W): ci = offset + x if 0 <= ci < len(cols): col = cols[ci] for y in range(H): if col & (1 << y): np[xy(x, y)] = text_color np.write() offset += 1 frame += 1 if offset > len(cols): offset = -W time.sleep_ms(80) # ================================================================= # Cykla allt # ================================================================= try: while True: plasma(9000) vortex(9000) tunnel(9000) sparkle(6000) scroll_text_shimmer("6446.se", duration_ms=15000) except KeyboardInterrupt: clear() np.write()