Cantwell’s love of architecture and interest in space made for an excellent pair, allowing him to make significant advances in Tinseltown, working on several space projects, including his debut credited work with2001: A Space Odyssey. “I worked closely with Stanley Kubrick and persuaded him not to begin the film with a 20-minute conference table discussion,” Cantwell said during his AMA. It was Cantwell who created the potent space entrance that followed mankind’s evolutionary emergence.

It was Cantwell’s work on WarGames – programming the Hewlett Packard screens to show the dramatic bomb scenes from NORAD displays as the WOPR (War Operation Plan Response) computer nearly launched nuclear missiles – that inspired him to create software capable of changing a few colors into 5,000 hues.

In addition to his film work, Cantwell’s wrote two science fiction novels, CoreFires 1 and CoreFires 2.

Cantwell is survived by Dall, his partner of 24 years.