Max Fleischer Stereoscopic Rotary Process by Popular Science. Fleischer-patented three-dimensional background effect called "The Stereoptical Process," a precursor to Disney's Multiplane. This technique replaced the usual flat-plane, drawn and painted cartoon backgrounds with a circular 3-D scale-model background — a diorama — in front of which the action cels were positioned and photographed. As the character, say, hustled down a city street, the camera operator would rotate the diorama a click