subtitled #17: chaikin

Cargo.lock

@@ -2422,6 +2422,14 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled17"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "subtitled2"
 version = "0.1.0"

crates/subtitled17/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled17"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled17/src/main.rs

@@ -0,0 +1,54 @@
+use nannou::prelude::*;
+use utils::{curves::*, drawing::draw_soft_bg, *};
+
+const POINTS: usize = 10;
+const SIZE: f32 = 300.0;
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {
+    curves: Vec<Chaikin>,
+}
+
+fn model(_app: &App) -> Model {
+    let curves = (0..10)
+        .map(|_| {
+            Chaikin::new(
+                (0..POINTS)
+                    .map(|_| vec2_range(-1., 1.) * SIZE)
+                    .collect::<Vec<_>>(),
+            )
+        })
+        .collect();
+
+    Model { curves }
+}
+
+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, SNOW, 0.01);
+
+    for (i, curve) in model.curves.iter().enumerate() {
+        let div = map_sin(t * 0.7 + (2 * i) as f32, 0.15, 0.35);
+        let h = map_sin(t * 0.3 + i as f32, 0., 1.);
+
+        draw.polyline().stroke_weight(1.5).points_colored(
+            curve
+                .points(div, 10)
+                .into_iter()
+                .enumerate()
+                .map(|(i, p)| (p, hsla((h + i as f32 / 10000.0).fract(), 0.5, 0.5, 0.5))),
+        );
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}