The Artist's Husband: Basic Sketch in Nannou
· the artists husband generative art rust nannou nannou sketch 
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) .x_y(200.0, -100.0); draw.ellipse() .color(DARKGREEN) .w(200.0) .h(230.0) .x_y(100.0, -50.0); draw.to_frame(app, &frame).unwrap(); } So what is going on here? At the top level, the three important parts of this sketch are the use statement, which imports all the Nannou components we need, the main() function, and the view() function. This is, in itself, a complete Rust program as well as a Nannou sketch. In Rust, the main() function is where the program starts – it’s the code that is executed when the program is run. In this case, that is just one line: nannou::sketch(view).run();, but there’s a lot going on on that line!