sentences:  The "special sequence" (Scottie's nightmare sequence) was designed by artist John Ferren, who also created the painting of Carlotta used in the film.The rotating patterns in the title sequence were done by John Whitney, who used a mechanical computer called the M5 gun director, AKA the Kerrison Predictor, which was used during World War II to aim anti-aircraft cannons at moving targets.This made it possible to produce an animated version of shapes (known as Lissajous curves) based on graphs of parametric equations by mathematician Jules Lissajous.