This project creates circles through a graphing function combined with 10 little pen sprites. You can toggle the size of the circle and the pen, and press the up and down arrows to switch between filled or hollow. You might want to click the flag twice for it to look better. Press c to clear.
I am working on a project like this that you can contribute to, just set the variables to a combination of your choice, screenshot it with the variables easily seen, then put the screenshot in a remix of this project and I will add it to a studio I made for this.