new effect plasma (#792)

Signed-off-by: Paulchen-Panther <Paulchen-Panter@protonmail.com>

effects/plasma.py

@@ -0,0 +1,35 @@
+import hyperion, time, colorsys, math
+
+hyperion.imageMinSize(64, 64)
+width = hyperion.imageWidth()
+height = hyperion.imageHeight()
+sleepTime = float(hyperion.args.get('sleepTime', 0.2))
+
+def mapto(x, in_min, in_max, out_min, out_max):
+	return float((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min)
+
+pal = []
+for h in range(256):
+	r, g, b = colorsys.hsv_to_rgb(mapto(h, 0.0, 255.0, 0.0, 1.0), 1.0, 1.0)
+	pal.append( bytearray( (int(r*255), int(g*255), int(b*255)) ) )
+
+plasma = [[]]
+for x in range(width):
+	plasma.append([])
+	for y in range(height):
+		color = int(128.0 + (128.0 * math.sin(x / 16.0)) + \
+			128.0 + (128.0 * math.sin(y / 8.0)) + \
+			128.0 + (128.0 * math.sin((x+y)) / 16.0) + \
+			128.0 + (128.0 * math.sin(math.sqrt(x**2.0 + y**2.0) / 8.0))) / 4
+		plasma[x].append(color)
+
+while not hyperion.abort():
+	ledData = bytearray()
+	mod = time.clock() * 100
+	for x in range(height):
+		for y in range(width):
+			ledData += pal[int((plasma[y][x] + mod) % 256)]
+
+	hyperion.setImage(width,height,ledData)
+	time.sleep(sleepTime)
+