A Clelia or Clelie Curve on a Sphere. Press <M> to switch to manual rotation using the keys below: <Right Arrow> & <Left Arrow> keys to rotate about the Y axis. <Up Arrow> & <Down Arrow> keys to rotate about the X axis. <a> and <z> keys to rotate about the Z axis. Try key combinations to rotate about several axes simultaneously. Press <M> again to return to automatic rotation.
3D Tutorial Studio: https://scratch.mit.edu/studios/5040029/ https://en.wikipedia.org/wiki/Clélie https://wikivisually.com/wiki/Clélie
