40 lines
1.2 KiB
Text
40 lines
1.2 KiB
Text
# Adapted from "wonder 'bout" by zamuz (Winamp AVS / visbot.net)
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# The original spawned Texer II ring sprites: ss = ss + .05 per frame,
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# size = |ss| * min(w,h)*.006, random color & position on wrap,
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# grow-scale sampled from the bass (getspec(.1,.1,0)).
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name: wonder 'bout
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author: zamuz (adapted)
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mode: lines
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blend: additive
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persist: 0.88
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linewidth: 1.8
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[init]
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n = 480
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groups = 12
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hue = 0
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[frame]
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# expansion speed rises with the smoothed bass (original: reg01 = .05/frame)
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speed = 0.25 + bass_att * 0.9
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hue = hue + dt * 0.1
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[point]
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g = floor(i * groups)
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gi = frac(i * groups)
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# per-ring phase, drifting at its own tempo
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ph = frac(rand(g * 7.3 + 1) + time * speed * (0.7 + rand(g + 31) * 0.6))
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px0 = rand(g + 3.7) * 1.7 - 0.85
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py0 = rand(g + 9.1) * 1.7 - 0.85
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rad = ph * (0.3 + bass * 0.6)
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cr = rand(g + 21.7)
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cg = rand(g + 15.3)
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cb = rand(g + 27.9)
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fade = (1 - ph) * (0.25 + ph * 2.2)
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a = 6.28318 * (gi * 1.05 - 0.025)
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x = px0 + cos(a) * rad / aspect
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y = py0 + sin(a) * rad
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red = cr * fade * (0.7 + 0.3 * sin(hue * 6.28318 + g))
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green = cg * fade * (0.7 + 0.3 * sin(hue * 6.28318 + g + 2.09))
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blue = cb * fade * (0.7 + 0.3 * sin(hue * 6.28318 + g + 4.19))
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skip = if(below(gi, 0.025), 1, 0)
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