Filmmaker Stu Maschwitz, chief creative officer at Red Giant, put some “animation elbow grease” into this sci-fi short film — half Star Wars, half Tron and about 99 percent Battlezone — that simulates a vintage vector-graphics system using only some clever Adobe After Effects expressions. “The Making of TANK,” in which he explains himself in a short film that amounts to an After Effects master class, is well worth the 20 minutes it will take to watch.