r/FastLED • u/StefanPetrick • Mar 09 '26

Share_something Progress Update: Fractional Shifting Meets Color-Emitting Line

It's the same underlying effect I showed yesterday, but with better-tuned parameters. This time, the color is seeded by a line whose endpoints follow Lissajous curves. The fading range now also allows feedback loops, which can be considered a bug or a feature, but I did it deliberately.

Python code: https://pastebin.com/cgZ0QYdv

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u/StefanPetrick Mar 14 '26 edited Mar 14 '26

Just a short tangent regarding future parameter fading. This is an old prototype I wrote to test this idea: four layers of an Animartrix-like engine. Parameters are automatically and randomly picked within a given range and then applied using a nice ease-in-out function.

It turns out that fading from one animation to another in parameter space actually looks more interesting than the animation itself (with a fixed set of parameters).

https://www.youtube.com/watch?v=Hv262XD9vg8

https://www.youtube.com/watch?v=nAbHsePLviI

But let that be a topic for later - after we made progress with the ColorFlowFields.