After clicking the green flag (turbo mode optional), draw the points for the Fourier transform by holding your left mouse button. Press R to reset. Press space when ready. When it reaches 100%, it will be finished and starts drawing the first iteration of the Fourier function. Press space again and again to show more and more iterations. Press B to instantly go to 50 iterations
I was inspired to make this project by a video from 3Blue1Brown.