Motion of a point light source between 3-spheres in 4-perspective.
Channel: Michal Zamboj
Date: 2022-10-04

The blue shapes (ellipsoids) are perspective projections of 3-spheres. Their shades with respect to the moving point are yellow. 

Perspective is given with focal distance 6, where reference arrows are long 3. The local reference system (Green, Blue, Purple, Red) is shifted to [-0.5, -0.5,-3.5,0.5].

The animation is created in Wolfram Mathematica