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I find the kaleidoscope surprisingly cool. In hindsight it's obvious but to get this out of a raytracer is somewhat unexpected to me.

https://github.com/susam/pov25#Kaleidoscope

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Cool indeed. A spin on it (also using POV-Ray), but using a photo (texture on an object) and animated (rotating that object, the texture, or the mirrors -- I forgot) in [0] and [1].

[0] https://www.youtube.com/watch?v=UJaBspDXgzs [1] https://www.youtube.com/watch?v=Zc5uEwwr6S8

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