hyperion.ng/effects/fade.py

import hyperion, time

# Get the parameters
fadeTime   = float(hyperion.args.get('fade-time', 5.0))
colorStart = hyperion.args.get('color-start', (255,174,11))
colorEnd   = hyperion.args.get('color-end', (100,100,100))

color_step = (
	(colorEnd[0] - colorStart[0]) / 256.0,
	(colorEnd[1] - colorStart[1]) / 256.0,
	(colorEnd[2] - colorStart[2]) / 256.0
)

# fade color
calcChannel = lambda i: min(max(int(colorStart[i] + color_step[i]*step),0),255)
for step in range(256):
	if hyperion.abort():
		break

	hyperion.setColor( calcChannel(0),calcChannel(1),calcChannel(2) )
	time.sleep( fadeTime / 256 )

# maintain color until effect end
hyperion.setColor(colorEnd[0],colorEnd[1],colorEnd[2])
while not hyperion.abort():
	time.sleep(1)