A little janky, but I made this in around an hour (not including pendulum research I did). I have a full video of me making this in the editor :D (Honestly, was pretty fun to make) When you finish adjusting the arms (dragging or sliders), press SPACE and watch it go! It will draw a graph in the middle where the direction of arm 2 (blue) is the x, and the direction of arm 1 (orange) is the y. I updated the graph because it sucked and looked like garbage.