69 lines
1.6 KiB
Rust
69 lines
1.6 KiB
Rust
use nannou::{color::Mix, prelude::*};
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use utils::*;
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fn main() {
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nannou::app(model)
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.size(800, 600)
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.update(update)
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.simple_window(view)
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.run();
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}
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struct Model {
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points: Vec<Point>,
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bg_color: Color,
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fg_color: Color,
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}
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type Color = rgb::Rgb<nannou::color::encoding::Linear<nannou::color::encoding::Srgb>>;
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struct Point {
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pos: Vec2,
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}
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const GOLDEN: f32 = 0.618033988;
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fn model(_app: &App) -> Model {
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Model {
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bg_color: srgb(1.0f32, 250.0 / 255.0, 250.0 / 255.0).into_linear(),
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fg_color: srgb(189.0 / 255.0, 178.0 / 255.0, 1.0).into_linear(),
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points: (0..100)
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.map(|i| {
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let theta = i as f32 * TAU * GOLDEN;
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let r = theta.sqrt();
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let x = r * theta.cos();
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let y = r * theta.sin();
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let pos = vec2(x, y) * 15.0;
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Point { pos }
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})
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.collect(),
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}
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}
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fn update(_app: &App, model: &mut Model, _update: Update) {
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for p in &mut model.points {
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p.pos += vec2(p.pos.y, -p.pos.x).normalize() * 19.0;
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}
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}
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fn view(app: &App, model: &Model, frame: Frame) {
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let t = frame.nth() as f32 / 60.0;
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let draw = app.draw();
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if frame.nth() == 0 {
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draw.background().color(model.bg_color);
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}
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for p in &model.points {
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let m = map_sin(t * 0.3 + p.pos.length(), 0.0, 1.0).powi(3);
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let color: Color = model.fg_color.mix(&model.bg_color, m);
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draw.ellipse().xy(p.pos).radius(10.0).color(color);
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}
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draw.to_frame(app, &frame).unwrap();
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utils::record::record(app, &frame);
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}
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