Earth sphere in $S^2 \times S^1$, the compact product of a 2-sphere with a circle
Raymarching in S2 x S1, where the E factor of S2 x E is compactified to a circle. This creates a compact space where objects repeat in the S1 direction. The earth-textured sphere and its periodic copies illustrate the compact product geometry.
Controls: WASD to rotate, arrow keys to translate.
