Finite element model of a torus world

 Put objects in a torus. 

Then pick a view point, and set your two radii. Collect the light along the shortest spiral paths and plot that on your surrounding sphere. Keep doing that, causing the objects to be reordered depending on how you set the radii ratio.  

Then set a vacuum decay, let the ratio equalize toward the middle. That is going back to a 'big bang'.  You should see objects coagulate on the inner surface. But the universe is much bigger, and we likely keep five of those quasars doing their job, and they are more powerful than we imagine, they reset our constants in physics. 

But anyway, we can revers that. Put objects in a sphere the way we measure then, then try and limit the backwards combinations that make a 4D object until we find constants that fit a torus view.