pakt24
See /software/p5js/pakt-februari/pakt24/ for a JavaScript version and /software/supercollider/februari-pakt/pakt24/ for accompanying sound code.
use nannou::lyon;
use nannou::prelude::*;
const N: usize = 80;
fn main() {
nannou::sketch(view).size(640, 480).run();
}
fn view(app: &App, frame: Frame) {
let draw = app.draw();
let win = app.window_rect();
let index = app.time * 60.0;
let rx = (index * 0.0012).sin();
let ry = (index * 0.0022 + 1.0).sin();
let tx = (index * 0.0032 + 2.0).sin() + rx;
let ty = (index * 0.0042 + 3.0).sin() + ry;
if frame.nth() == 0 {
frame.clear(BLACK);
} else {
draw.rect().wh(win.wh()).color(rgba(1.0, 1.0, 1.0, 0.02));
}
let mut builder = nannou::geom::path::Builder::new().with_svg();
builder.move_to(
lyon::math::point(
(-1.0 / N as f32 * 2.0 * PI + rx + tx).cos() * win.w(),
(-1.0 / N as f32 * 2.0 * PI + ry + ty).sin() * win.h(),
) * 0.49
);
for i in 0..N {
let t = i as f32 / N as f32 * 2.0 * PI;
let x = t + rx + tx;
let y = t + ry + ty;
builder.quadratic_bezier_to(
lyon::math::point(x.sin() * win.w(), y.cos() * win.h()) * 0.49,
lyon::math::point(x.cos() * win.w(), y.sin() * win.h()) * 0.49,
);
}
let path = builder.build();
draw.scale_axes(vec3(1.0, -1.0, 1.0))
.path()
.stroke()
.stroke_weight(0.75)
.color(BLACK)
.events(path.iter());
draw.to_frame(app, &frame).unwrap();
}