I always love to design dynamic elements into a movie. There's something just so cinematic about moving parts and shifting lighting. With the Dillinger I/O Portal, I tried to motivate shifting rays of light from apertures that would open and close as two counter-rotating rings of diagonal panels crossed each other. But why ultimately this cone-shaped tower surrounding the beam you ask?
As always, I try to define shape from function. In this case I leaned into the idea of a two-way beam (Input and Output) and referenced co-axial cable, where the core is transmitting in one direction and the surface sleeve in the opposite. I imagined beams coming in from all directions of the grid and a machine weaving those data threads around the core into the outer shaft like braided cable. So what better to reference than the actual machines that braid cable and rope?
Ultimately the concept was rejected in favor of something simpler, but the resulting forms remain. As the portal ends up a "blink and you'll miss it" element at the end of the sequence, it was probably the right call.
Early test for the portal beam animation using some choreographed articulation and simple animated UVs for the beams. If the concept had been approved I would have likely animated braided beams to take it to the next level.
Another view of the braided beam test animation.