Initial commit

README.md

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+# Pixelthud
+
+Animationen für die Decken-LED-Matrix im Chaospott. Kompatibel zu Pixelserver2

fading_pixel.py

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+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    fps = float(sys.argv[3])
+except (IndexError, ValueError):
+    fps = 1.0
+
+
+def point2idx(x,y):
+    return 3*(x+Nx*y)
+
+def set_pixel_max(buffer, x, y):
+    idx = point2idx(x,y)
+    for i in range(3):
+        buffer[idx+i] = max(0x00, buffer[idx+i]-1)
+
+def set_pixel_rand(buffer, x, y):
+    idx = point2idx(x,y)
+    for i in range(3):
+        buffer[idx+i] = np.random.randint(0x00, 0xff)
+
+clock = pygame.time.Clock()
+buffer = bytearray(b"\x00"*(3*Nx*Ny))
+
+i = 0
+while True:
+    i = i + 1
+    for px in range(Nx):
+        for py in range(Ny):
+            set_pixel_max(buffer, px, py)
+    for j in range(10):
+        set_pixel_rand(buffer, np.random.randint(0, Nx), np.random.randint(0, Ny))
+        if i > 100:
+            os.write(1, buffer)
+            clock.tick_busy_loop(fps)

sine.py

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+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    frequency = float(sys.argv[3])
+except (IndexError, ValueError):
+    frequency = 5
+
+fps = 30
+amplitude = 105
+offset = 150
+t = 0
+
+x,y = np.meshgrid(np.linspace(0, 2*np.pi * min(1, Nx/Ny), Nx),  np.linspace(0, 2*np.pi * min(1, Ny/Nx), Ny))
+kx = x + y
+
+clock = pygame.time.Clock()
+
+while True:
+    t = t + 1e-3
+    R = amplitude * np.sin(kx - 2 * np.pi * frequency * t) + offset
+    G = amplitude * np.sin(kx - 2 * np.pi * frequency  * t + 2*np.pi/3) + offset
+    B = amplitude * np.sin(kx - 2 * np.pi * frequency  * t + 4*np.pi/3) + offset
+
+    out = np.dstack((R,G,B)).astype(np.uint8).tobytes()
+    os.write(1, out)
+    clock.tick_busy_loop(fps)