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Beautiful -- several years ago, I created an iOS app that does this live on screen in real time (via CoreImage filters, saving a video of the trails building up) but then never released it. I should probably just put it out there -- it was all ready to go except for a name if I recall, made a video set to music and everything. Will see if I can dig up the video...

Edit: 45 second video here for anyone interested: https://youtu.be/df_Pr4jAu78

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In general, there’s more to gain by putting something out there than not, even if you think it’s unfinished/no one will care/etc. I’ve published things in the past that I thought were utter crap. Most of them never got any response; but a few unexpectedly got some users/readers a few months or years later, seemingly out of nowhere.

It’s always nice when you get an email about a side project you totally forgot, from a teacher who used your software for some need you could never have predicted, or a student who used your work for their senior thesis because it weirdly overlapped.

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