subtitled2

Cargo.lock

@@ -2348,6 +2348,14 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled2"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.74"

README.md

@@ -5,3 +5,4 @@ this is a bunch of nannou projects
 ## list
 
 - subtitled #1: some spinning circles
+- subtitled #2: idk spinning colors or something

crates/subtitled2/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled2"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled2/src/main.rs

@@ -0,0 +1,61 @@
+use nannou::prelude::*;
+
+use utils::*;
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {
+    points: Vec<Vec2>,
+}
+
+const PNUM: i32 = 500;
+
+fn model(_app: &App) -> Model {
+    let points = (0..PNUM)
+        .map(|i| (i as f32 * TAU / PNUM as f32).sin_cos().into())
+        .map(|v: Vec2| v * 100.0)
+        .collect();
+    Model { points }
+}
+
+fn update(_app: &App, _model: &mut Model, _update: Update) {}
+
+fn view(app: &App, model: &Model, frame: Frame) {
+    let t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+
+    if frame.nth() == 1 {
+        draw.background().color(BLACK);
+    } else {
+        let win = app.window_rect();
+        draw.rect().wh(win.wh()).color(srgba(0., 0., 0., 0.03));
+    }
+
+    let big_r = map_sin(t * 2.0, 1.0, 2.0);
+
+    let points: Vec<Vec2> = model
+        .points
+        .clone()
+        .into_iter()
+        .enumerate()
+        .map(|(i, p)| {
+            let o = map_sin(t * 10.0 + 10.0 * TAU * (i as f32 / PNUM as f32), 0.8, 1.2);
+            p * o * big_r
+        })
+        .collect();
+
+    for p in points {
+        let h = ((p.atan2() - t * 0.2) % TAU) / TAU;
+        let s = 0.7;
+        let l = map_range(p.length(), 100.0 * 0.8, 200.0 * 1.2, 0.1, 0.5);
+
+        draw.ellipse().color(hsl(h, s, l)).xy(p).w_h(10.0, 10.0);
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+
+    utils::record::record(app, &frame);
+}