Click the green flag, sit back, relax. Please feel free to remix! There's plenty of coefficients to play around with in the parametric equation that drives the animation. Have fun!
2D parametric equation, with on each axis, a sine wave frequency-modulated by another sine wave. Fixed amplitudes and frequencies. Similar to a Lissajous curve, but more complex. Inspired by this other FM project of mine: https://scratch.mit.edu/projects/471565434/ I liked the visual effect of FM in one dimension, and it made me curious what would happen in two dimensions. I wasn't disappointed by the result! I reproduced the animation in Desmos: https://www.desmos.com/calculator/dh1kcyrlai