sketch #6

Cargo.lock

@@ -2380,6 +2380,14 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled6"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.74"

crates/subtitled6/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled6"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled6/src/main.rs

@@ -0,0 +1,58 @@
+use nannou::prelude::*;
+use utils::*;
+
+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) {}
+
+const D: f32 = 300.0;
+
+fn view(app: &App, _model: &Model, frame: Frame) {
+    let t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+    draw.background().color(SNOW);
+
+    let div = map_cos(t, 2.0, 50.0).floor() as i32;
+    let offset = D / div as f32;
+    let resolution = map_cos(t, 5.0, 50.0).floor() * 2.0;
+
+    for i in (0..=div).rev() {
+        let fi = i as f32;
+        draw.scissor(Rect::from_corners(vec2(-D, 0.0), vec2(D, D)))
+            .ellipse()
+            .resolution(resolution)
+            .w_h(offset * fi, offset * fi)
+            .x(offset * (div as f32 - fi) / 2.0)
+            .color(srgb(
+                i as f32 / div as f32,
+                0.0,
+                (div - i + 1) as f32 / div as f32,
+            ));
+    }
+    for i in (0..=div).rev() {
+        let fi = i as f32;
+        draw.scissor(Rect::from_corners(vec2(D, 0.0), vec2(-D, -D)))
+            .ellipse()
+            .resolution(resolution)
+            .w_h(offset * fi, offset * fi)
+            .x(-offset * (div as f32 - fi) / 2.0)
+            .color(srgb(
+                (div - i + 1) as f32 / div as f32,
+                0.0,
+                i as f32 / div as f32,
+            ));
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+
+    utils::record::record(app, &frame);
+}