Since 1987 Struycken employed so-called flat parallel (colour) waves alongside the sine waves he was already using, which were three-dimensional in character. This is a principle in which a one-dimensional wave can endlessly propagate in a three-dimensional space in any given direction as a function of time and space.
This new method not only gave the insight Struycken wanted from his computer programs, but produced new types of images. The typical swirling loops and oval forms of ere now made way for zigzagging lines and angular patterns.