As the subject approaches the speed of light relative to the observer the plane of the subject rotates on the Y axis tilting from the observer creating a warped rectangle shortening length, stretching time as the subject is moving down a spacetime hole and not along the same spacetime trajectory of the observer..

When the small cube is placed outside the larger cube it is the timeline view and shows the spin of the subject plane into the y axis and if switched would show the observer plane shift out of Y axis.

When the small cube is placed inside the larger cube the traditional hypercube you would see the quantum and hypersphere view and how the quark anti quark and the standard model will work and how it is connected to the hypersphere and will connect to the wave function of the particle.

Note it will also intuitively show that the hypersphere can also be placed in timeline view to understand out Electromagnetic world more effectively.

the far points of the cube static

the close to the far points change and shorten the length of the subject perceived by the observer as the relative velocity increases. The gravity and mass are the shift of the subject plain from the observers standpoint.

The shift of a relative velocity difference is that the plin of the observed is tilted into the Y axis if faster and out of the Y axis if slower.

The Tilted axis changes the perceived Mass and Gravity around the object as well as the time.

When the relative velocity between the observer and subject reaches 90 percent the subject disappears. (hell I don't know moves backward (2nd quadrant). Then third quadrant is the anti-quark quantum time