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Nonorientable surfaces are cool. Really cool. On an unrelated note, I'm doing my best to optimize this as much as possible, so lag is gonna happen if you set things too high. Remixed from my torus experiment: https://scratch.mit.edu/projects/23816800/ Improved performance and less rendering artifacts, though I think mouse input is broken: http://phosphorus.github.io/#71825708 Sources for formulas: https://en.wikipedia.org/wiki/Klein_bottle http://mathworld.wolfram.com/BoySurface.html
