72 lines
2.0 KiB
Python
72 lines
2.0 KiB
Python
import hyperion, time, math, random
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randomCenter = bool(hyperion.args.get('random-center', False))
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centerX = float(hyperion.args.get('center_x', -0.15))
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centerY = float(hyperion.args.get('center_y', -0.25))
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rotationTime = float(hyperion.args.get('rotation_time', 90))
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colors = hyperion.args.get('colors', ((255,0,0),(255,255,0),(0,255,0),(0,255,255),(0,0,255),(255,0,255)))
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reverse = bool(hyperion.args.get('reverse', False))
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reverseTime = int(hyperion.args.get('reverse_time', 0))
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positions = []
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# calc center if random
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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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rCenterX = int(round(float(hyperion.imageWidth())*centerX))
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rCenterY = int(round(float(hyperion.imageHeight())*centerY))
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#calc interval
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sleepTime = max(1/(255/rotationTime), 0.016)
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#calc diagonal
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if centerX < 0.5:
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cX = 1.0-centerX
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else:
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cX = 0.0+centerX
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if centerY < 0.5:
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cY = 1.0-centerY
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else:
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cY = 0.0+centerY
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diag = int(round(math.hypot(cX*hyperion.imageWidth(),cY*hyperion.imageHeight())))
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# some diagonal overhead
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diag = int(diag*1.3)
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# calc positions
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pos = 0
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step = int(255/len(colors))
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for _ in colors:
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positions.append(pos)
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pos += step
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# target time
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targetTime = time.time()+float(reverseTime)
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while not hyperion.abort():
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# verify reverseTime, randomize reverseTime based on reverseTime up to reversedTime*2
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if reverseTime >= 1:
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now = time.time()
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if now > targetTime:
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reverse = not reverse
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targetTime = time.time()+random.uniform(float(reverseTime), float(reverseTime*2.0))
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# prepare bytearray with colors and positions
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gradientBa = bytearray()
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it = 0
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for color in colors:
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gradientBa += bytearray((positions[it],color[0],color[1],color[2]))
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it += 1
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hyperion.imageRadialGradient(rCenterX,rCenterY, diag, gradientBa,0)
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# increment positions
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for i, pos in enumerate(positions):
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if reverse:
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positions[i] = pos - 1 if pos >= 1 else 255
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else:
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positions[i] = pos + 1 if pos <= 254 else 0
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hyperion.imageShow()
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time.sleep(sleepTime)
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