3 ms·

Why is it moving?

• speps 9y ago
  Otherwise you'd only see the level set for one specific value. Looping through the values allows to see the entire shape over time.
• sp332 9y ago
  It's a 4-dimensional object. The animation doesn't show the object moving, it just shows progressive cross-sections of the object. If you stop the animation, you can choose which layer of the object to view with the slider. Edit: Not to derail the thread, but here's another post about 4D visualization toys. https://news.ycombinator.com/item?id=14471931 https://news.ycombinator.com/item?id=14471931