spiral
See /f0blog/spiral/ for a JavaScript version.
use nannou::prelude::*;
fn main() {
nannou::sketch(view).size(800, 600).run();
}
fn view(app: &App, frame: Frame) {
let draw = app.draw();
frame.clear(BLACK);
let theta = (app.time * 60.0 * 0.001).sin() * PI * 2.0 * 4.0;
for y in 0..app.window_rect().h() as i32 {
let y = y as f32;
for i in 0..10 {
let i = i as f32;
let rot = i + 1.0 + y * 10.0;
draw.rotate(theta * 0.001 * rot)
.rect()
.color(WHITE)
.w_h(2.0, 2.0)
.x_y((y * 0.1 + theta + i * 2.0).sin() * 100.0, y);
}
}
draw.to_frame(app, &frame).unwrap();
}