subtitled #18: gay core

Cargo.lock

@@ -2430,6 +2430,14 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled18"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "subtitled2"
 version = "0.1.0"

crates/subtitled18/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled18"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled18/src/main.rs

@@ -0,0 +1,52 @@
+use nannou::prelude::*;
+use utils::{drawing::draw_soft_bg, *};
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {}
+
+fn model(_app: &App) -> Model {
+    Model {}
+}
+
+fn update(app: &App, _model: &mut Model, _update: Update) {
+    let _t = app.elapsed_frames() as f32 / 60.0;
+}
+
+fn view(app: &App, _model: &Model, frame: Frame) {
+    let t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+    draw_soft_bg(&draw, app, BLACK, 1.0);
+
+    let count = 10;
+    for a in 0..360 {
+        for i in 1..=count {
+            let a = a as f32;
+            let fi = i as f32;
+
+            let r = 1500.0 * (t + 0.01 * a + fi).cos();
+            let r = r.powf(0.9 * fi / count as f32);
+            // alternate directions of spin for each layer
+            let s = if i % 2 == 0 { 1.0 } else { -1.0 } * map_sin(a * fi * fi, 0.1, 1.0);
+
+            let p = r * (s * t + fi + a).sin_cos().to_vec2();
+
+            // jitter
+            let p = p + map_sin(t * 0.3 + TAU * 0.75, 0., 7.0) * vec2_circ();
+            let sat = map_sin(t * 0.3 + TAU * 0.75, 0.4, 0.9);
+
+            let r = map_range(r, 0., 500.0, 0.5, 13.0).sqrt();
+
+            draw.ellipse()
+                .radius(r)
+                .xy(p)
+                .color(hsl(a / 360.0, sat, 0.5));
+        }
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}