hyperion.ng/effects/rainbow-swirl.py

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import hyperion
import time
import colorsys
# Get the parameters
rotationTime = float(hyperion.args.get('rotation-time', 3.0))
brightness = float(hyperion.args.get('brightness', 1.0))
saturation = float(hyperion.args.get('saturation', 1.0))
reverse = bool(hyperion.args.get('reverse', False))
# Check parameters
rotationTime = max(0.1, rotationTime)
brightness = max(0.0, min(brightness, 1.0))
saturation = max(0.0, min(saturation, 1.0))
# Initialize the led data
ledData = bytearray()
for i in range(hyperion.ledCount):
hue = float(i)/hyperion.ledCount
rgb = colorsys.hsv_to_rgb(hue, saturation, brightness)
ledData += bytearray((int(255*rgb[0]), int(255*rgb[1]), int(255*rgb[2])))
# Calculate the sleep time and rotation increment
increment = 3
sleepTime = rotationTime / hyperion.ledCount
while sleepTime < 0.05:
increment *= 2
sleepTime *= 2
increment %= hyperion.ledCount
# Switch direction if needed
if reverse:
increment = -increment
# Start the write data loop
while not hyperion.abort():
hyperion.setColor(ledData)
ledData = ledData[-increment:] + ledData[:-increment]
time.sleep(sleepTime)