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33 lines
704 B
Python
Executable file
33 lines
704 B
Python
Executable file
#!/usr/bin/python
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# vim:et:sw=4:ts=4:sts=4
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import sys
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from ledbar import Ledbar
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PIXELS = 20
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def update(t, i):
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offset = float(i)/PIXELS
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time = 0.005*t
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phi = 6*offset+time
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phase = int(phi%6)
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part = phi % 1.0
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inc = part
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dec = 1-part
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if phase == 0: return ( 1, inc, 0)
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elif phase == 1: return (dec, 1, 0)
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elif phase == 2: return ( 0, 1, inc)
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elif phase == 3: return ( 0, dec, 1)
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elif phase == 4: return (inc, 0, 1)
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elif phase == 5: return ( 1, 0, dec)
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l = Ledbar(PIXELS)
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t = 0
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work = True
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while work:
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for i in xrange(PIXELS):
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c = update(t, i)
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l.set_pixel(i, c[0], c[1], c[2])
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work = l.update()
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t += 1
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