The yellow hexagon is the actual 3D space, and also a hypercube. After a volume is drawn in the yellow area, the points of origin of all the color-coded hexagons are made to occupy the same point of origin, which would be red hexagons's center. The hyper-tetrahedron, which is the universe's simplest hypervolume, was manually constructed on this 4D graph. If you can make a program or an inter-active 3D-4D graph from this simple drawing please let me know. Thanks.