67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
import hyperion, time, math, random
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# set minimum image size - must be done asap
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hyperion.imageMinSize(64,64)
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iW = hyperion.imageWidth()
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iH = hyperion.imageHeight()
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# Get the parameters
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rotationTime = float(hyperion.args.get('rotation-time', 8.0))
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reverse = bool(hyperion.args.get('reverse', False))
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centerX = float(hyperion.args.get('center_x', 0.5))
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centerY = float(hyperion.args.get('center_y', 0.5))
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randomCenter = bool(hyperion.args.get('random-center', False))
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custColors = hyperion.args.get('custom-colors', ((255,0,0),(0,255,0),(0,0,255)))
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if randomCenter:
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centerX = random.uniform(0.0, 1.0)
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centerY = random.uniform(0.0, 1.0)
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minStepTime = float(hyperion.latchTime)/1000.0
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sleepTime = max(0.1, rotationTime) / 360
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angle = 0
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centerX = int(round(float(iW)*centerX))
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centerY = int(round(float(iH)*centerY))
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increment = -1 if reverse else 1
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# adapt sleeptime to hardware
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if minStepTime > sleepTime:
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increment *= int(math.ceil(minStepTime / sleepTime))
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sleepTime = minStepTime
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# table of stop colors for rainbow gradient, first is the position, next rgba, all values 0-255
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rainbowColors = bytearray()
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if len(custColors) > 1:
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posfac = int(255/len(custColors))
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pos = 0
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for c in custColors:
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pos += posfac
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rainbowColors += bytearray([pos,c[0],c[1],c[2],255])
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lC = custColors[-1]
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rainbowColors += bytearray([0,lC[0],lC[1],lC[2],255])
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else:
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rainbowColors = bytearray([
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0 ,255,0 ,0, 255,
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25 ,255,230,0, 255,
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63 ,255,255,0, 255,
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100,0 ,255,0, 255,
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127,0 ,255,200, 255,
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159,0 ,255,255, 255,
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191,0 ,0 ,255, 255,
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224,255,0 ,255, 255,
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255,255,0 ,127, 255,
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])
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# effect loop
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while not hyperion.abort():
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angle += increment
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if angle > 360: angle=0
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if angle < 0: angle=360
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hyperion.imageCanonicalGradient(centerX, centerY, angle, rainbowColors)
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hyperion.imageShow()
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time.sleep(sleepTime) |