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mood-blobs.py
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mood-blobs.py
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import hyperion, time, colorsys, math
from random import random
# Get the parameters
rotationTime = float(hyperion.args.get('rotationTime', 20.0))
color = hyperion.args.get('color', (0,0,255))
colorRandom = bool(hyperion.args.get('colorRandom', False))
hueChange = float(hyperion.args.get('hueChange', 60.0))
blobs = int(hyperion.args.get('blobs', 5))
reverse = bool(hyperion.args.get('reverse', False))
baseColorChange = bool(hyperion.args.get('baseChange', False))
baseColorRangeLeft = float(hyperion.args.get('baseColorRangeLeft',0.0)) # Degree
baseColorRangeRight = float(hyperion.args.get('baseColorRangeRight',360.0)) # Degree
baseColorChangeRate = float(hyperion.args.get('baseColorChangeRate',10.0)) # Seconds for one Degree
# switch baseColor change off if left and right are too close together to see a difference in color
if (baseColorRangeRight > baseColorRangeLeft and (baseColorRangeRight - baseColorRangeLeft) < 10) or \
(baseColorRangeLeft > baseColorRangeRight and ((baseColorRangeRight + 360) - baseColorRangeLeft) < 10):
baseColorChange = False
# 360 -> 1
fullColorWheelAvailable = (baseColorRangeRight % 360) == (baseColorRangeLeft % 360)
baseColorChangeIncreaseValue = 1.0 / 360.0 # 1 degree
hueChange /= 360.0
baseColorRangeLeft = (baseColorRangeLeft / 360.0)
baseColorRangeRight = (baseColorRangeRight / 360.0)
# Check parameters
rotationTime = max(0.1, rotationTime)
hueChange = max(0.0, min(abs(hueChange), .5))
blobs = max(1, blobs)
baseColorChangeRate = max(0, baseColorChangeRate) # > 0
# Calculate the color data
baseHsv = colorsys.rgb_to_hsv(color[0]/255.0, color[1]/255.0, color[2]/255.0)
if colorRandom:
baseHsv = (random(), baseHsv[1], baseHsv[2])
colorData = bytearray()
for i in range(hyperion.ledCount):
hue = (baseHsv[0] + hueChange * math.sin(2*math.pi * i / hyperion.ledCount)) % 1.0
rgb = colorsys.hsv_to_rgb(hue, baseHsv[1], baseHsv[2])
colorData += bytearray((int(255*rgb[0]), int(255*rgb[1]), int(255*rgb[2])))
# Calculate the increments
sleepTime = 0.1
amplitudePhaseIncrement = blobs * math.pi * sleepTime / rotationTime
colorDataIncrement = 3
baseColorChangeRate /= sleepTime
# Switch direction if needed
if reverse:
amplitudePhaseIncrement = -amplitudePhaseIncrement
colorDataIncrement = -colorDataIncrement
# create a Array for the colors
colors = bytearray(hyperion.ledCount * (0,0,0))
# Start the write data loop
amplitudePhase = 0.0
rotateColors = False
baseColorChangeStepCount = 0
baseHSVValue = baseHsv[0]
numberOfRotates = 0
while not hyperion.abort():
# move the basecolor
if baseColorChange:
# every baseColorChangeRate seconds
if baseColorChangeStepCount >= baseColorChangeRate:
baseColorChangeStepCount = 0
# cyclic increment when the full colorwheel is available, move up and down otherwise
if fullColorWheelAvailable:
baseHSVValue = (baseHSVValue + baseColorChangeIncreaseValue) % baseColorRangeRight
else:
# switch increment direction if baseHSV <= left or baseHSV >= right
if baseColorChangeIncreaseValue < 0 and baseHSVValue > baseColorRangeLeft and (baseHSVValue + baseColorChangeIncreaseValue) <= baseColorRangeLeft:
baseColorChangeIncreaseValue = abs(baseColorChangeIncreaseValue)
elif baseColorChangeIncreaseValue > 0 and baseHSVValue < baseColorRangeRight and (baseHSVValue + baseColorChangeIncreaseValue) >= baseColorRangeRight :
baseColorChangeIncreaseValue = -abs(baseColorChangeIncreaseValue)
baseHSVValue = (baseHSVValue + baseColorChangeIncreaseValue) % 1.0
# update color values
colorData = bytearray()
for i in range(hyperion.ledCount):
hue = (baseHSVValue + hueChange * math.sin(2*math.pi * i / hyperion.ledCount)) % 1.0
rgb = colorsys.hsv_to_rgb(hue, baseHsv[1], baseHsv[2])
colorData += bytearray((int(255*rgb[0]), int(255*rgb[1]), int(255*rgb[2])))
# set correct rotation after reinitialisation of the array
colorData = colorData[-colorDataIncrement*numberOfRotates:] + colorData[:-colorDataIncrement*numberOfRotates]
baseColorChangeStepCount += 1
# Calculate new colors
for i in range(hyperion.ledCount):
amplitude = max(0.0, math.sin(-amplitudePhase + 2*math.pi * blobs * i / hyperion.ledCount))
colors[3*i+0] = int(colorData[3*i+0] * amplitude)
colors[3*i+1] = int(colorData[3*i+1] * amplitude)
colors[3*i+2] = int(colorData[3*i+2] * amplitude)
# set colors
hyperion.setColor(colors)
# increment the phase
amplitudePhase = (amplitudePhase + amplitudePhaseIncrement) % (2*math.pi)
if rotateColors:
colorData = colorData[-colorDataIncrement:] + colorData[:-colorDataIncrement]
numberOfRotates = (numberOfRotates + 1) % hyperion.ledCount
rotateColors = not rotateColors
# sleep for a while
time.sleep(sleepTime)