Now that you have Rust and Nannou installed , lets look at a basic Nannou sketch. A sketch in Nannou is a fast way to get a drawing displayed. Here is a simple one which just draws a rectangle and an ellipse on a colored background. use nannou::prelude::*; fn main() { nannou::sketch(view).run(); } fn view(app: &App, frame: Frame) { let draw = app.draw(); draw.background() .color(LIGHTBLUE); draw.rect() .color(ORANGE) .w(100.0) .h(200.0) .