quick pen project. turbo speed NOT recommended. once rendering's finished, press space to show the slider, and once you've set it to whatever you want press space again. the coolest patterns are located somewhere between 1 and 2.
based off of a little ti-83 calculator program i made in math class. the totally unnecessary "vertical line sweep" style rendering is a homage to the rendering method the program uses. the calculator takes about 45 minutes to render an image roughly an eighth of the resolution of this scratch project, so think about that before complaining that it renders slowly ;)