Curve backgrounds: Lissajous, spirographs and wave fields
Updated September 18, 20263 min read
What is a parametric curve background?
It is a background drawn from an equation rather than a filter. A Lissajous figure, a spirograph rosette or a Chladni plate is defined by a handful of numbers, so changing one parameter changes the whole shape while the motion stays smooth and loops exactly.
These are the backgrounds you cannot drag an effect onto. Each preset evaluates its own equation every frame, which is why the curves stay sharp at any resolution and why the loop closes rather than cross-fading.