19, 20, 21

Cargo.lock

@@ -2422,6 +2422,30 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled17"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
+[[package]]
+name = "subtitled18"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
+[[package]]
+name = "subtitled19"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "subtitled2"
 version = "0.1.0"
@@ -2430,6 +2454,22 @@ dependencies = [
  "utils",
 ]
 
+[[package]]
+name = "subtitled20"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
+[[package]]
+name = "subtitled21"
+version = "0.1.0"
+dependencies = [
+ "nannou",
+ "utils",
+]
+
 [[package]]
 name = "subtitled3"
 version = "0.1.0"

crates/subtitled16/src/main.rs

@@ -2,6 +2,8 @@ use std::time::Duration;
 
 use nannou::prelude::*;
 
+// https://sighack.com/post/flood-fill-art-using-random-walks
+
 const R: f32 = 2.0;
 
 fn main() {
@@ -46,7 +48,7 @@ fn model(_app: &App) -> Model {
 }
 
 fn update(app: &App, model: &mut Model, _update: Update) {
-    for _ in 0..20 {
+    for _ in 0..50 {
         run(app, model)
     }
 }
@@ -100,8 +102,10 @@ fn view(app: &App, model: &Model, frame: Frame) {
             .color(hsl(h.fract(), 0.5, 0.5));
     }
 
-    // cause otherwise it goes too fast when recording and it can't save the frames in time lmao
-    std::thread::sleep(Duration::from_millis(5));
+    if frame.nth() < 50 {
+        // cause otherwise it goes too fast when recording and it can't save the frames in time lmao
+        std::thread::sleep(Duration::from_millis(5));
+    }
 
     draw.to_frame(app, &frame).unwrap();
     utils::record::record(app, &frame);

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);
+}

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);
+}

crates/subtitled19/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled19"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled19/src/main.rs

@@ -0,0 +1,66 @@
+use nannou::prelude::*;
+use utils::{drawing::draw_soft_bg, *};
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Walker {
+    pos: Vec2,
+    vel: Vec2,
+    color: f32,
+}
+
+struct Model {
+    walkers: Vec<Walker>,
+}
+
+fn model(_app: &App) -> Model {
+    Model {
+        walkers: (0..100)
+            .map(|_| Walker {
+                pos: Vec2::ZERO,
+                vel: Vec2::ZERO,
+                color: random_range(0.0, 1.0),
+            })
+            .collect(),
+    }
+}
+
+fn update(app: &App, model: &mut Model, _update: Update) {
+    let _t = app.elapsed_frames() as f32 / 60.0;
+
+    for walker in &mut model.walkers {
+        walker.vel += vec2_range(-2.0, 1.0);
+        walker.vel = walker.vel.normalize();
+
+        walker.pos += walker.vel;
+
+        // wrap around the box
+        const SIZE: f32 = 100.0;
+        if walker.pos.x.abs() > SIZE {
+            walker.pos.x = -walker.pos.x;
+        }
+        if walker.pos.y.abs() > SIZE {
+            walker.pos.y = -walker.pos.y;
+        }
+    }
+}
+
+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 walker in &model.walkers {
+        let h = (t * 10.0 + walker.color * 50.0) / 360.0;
+        draw.ellipse()
+            .xy(walker.pos)
+            .radius(1.0)
+            .color(hsl(h.fract(), 0.7, 0.5));
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}

crates/subtitled20/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled20"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled20/src/main.rs

@@ -0,0 +1,60 @@
+use nannou::prelude::*;
+use utils::*;
+
+// based on https://nbickford.wordpress.com/2011/04/03/the-minsky-circle-algorithm/
+
+fn main() {
+    nannou::app(model).update(update).simple_window(view).run();
+}
+
+struct Model {
+    points: Vec<Vec2>,
+    base_hue: f32,
+}
+
+fn model(_app: &App) -> Model {
+    Model {
+        points: (0..1000).map(|_| Vec2::ONE * 6.0).collect(),
+        base_hue: 0.0,
+    }
+}
+
+fn advance(mut point: Vec2, t: f32) -> Vec2 {
+    let d = map_sin(t * 1.1, 0.01, 0.12);
+    let e = (t.sqrt() * 0.01 + 0.3).min(1.1);
+    point.x -= (point.y * d).floor();
+    point.y += (point.x * e).floor();
+    point
+}
+
+fn update(app: &App, model: &mut Model, _update: Update) {
+    let t = app.elapsed_frames() as f32 / 60.0;
+
+    // advance all points in list
+    let mut last = model.points.last().unwrap().clone();
+    for v in &mut model.points {
+        last = advance(last, t);
+        *v = last;
+    }
+
+    // move base_hue
+    model.base_hue += random::<f32>();
+}
+
+fn view(app: &App, model: &Model, frame: Frame) {
+    let t = frame.nth() as f32 / 60.0;
+
+    let draw = app.draw();
+    drawing::draw_soft_bg(&draw, app, BLACK, 0.01);
+
+    for &p in &model.points {
+        let h = random_range(model.base_hue, model.base_hue + 60.0) / 360.0;
+        draw.ellipse()
+            .radius(map_sin(p.x.powi(3) + p.y.powi(7) + t * 0.1, 1.0, 3.0))
+            .xy(p * 7.0)
+            .color(hsla(h.fract(), 1.0, 0.5, 0.1));
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}

crates/subtitled21/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "subtitled21"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+nannou = "0.17"
+utils = { path = "../utils" }

crates/subtitled21/src/main.rs

@@ -0,0 +1,97 @@
+use nannou::prelude::*;
+// use utils::*;
+
+// from https://fabiensanglard.net/doom_fire_psx/
+
+fn main() {
+    nannou::app(model)
+        .update(update)
+        .simple_window(view)
+        .size(800, 800)
+        .run();
+}
+
+struct Model {}
+
+const BALL_SIZE: f32 = 3.0;
+
+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 shader(i: usize, j: usize, w: usize, h: usize, t: f32) -> Rgb {
+    let x = i as f32 / w as f32;
+    let y = j as f32 / h as f32;
+    let pos = vec2(x, y);
+
+    // srgb(pos.x, pos.y, 0.0)
+
+    // let a = (pos - vec2(0.5, 0.5)).length();
+    // srgb(a, a, a)
+
+    creation(pos, t)
+}
+
+fn creation(pos: Vec2, t: f32) -> Rgb {
+    let mut l = t;
+    let mut z = t;
+    let mut c = [0.0; 3];
+
+    for i in 0..3 {
+        let mut uv = pos;
+        let mut p = pos;
+
+        p -= Vec2::splat(0.5);
+        z += 0.07;
+        l = p.length();
+        uv += p / l * (z.sin() + 1.) * abs((l * 9. - z * 2.).sin());
+        c[i] = 0.01 / ((vec2(uv.x.fract(), uv.y.fract()) - Vec2::splat(0.5)).abs()).length();
+    }
+
+    srgb(c[0] / l, c[1] / l, c[2] / l)
+}
+
+fn view(app: &App, _model: &Model, frame: Frame) {
+    let t = frame.nth() as f32 / 120.0;
+
+    let draw = app.draw();
+    draw.background().color(BLACK);
+
+    let (l, top, w, h) = app.window_rect().l_t_w_h();
+
+    let cols = (w / BALL_SIZE) as usize;
+    let rows = (h / BALL_SIZE) as usize;
+
+    for i in 0..cols {
+        for j in 0..rows {
+            let x = l + j as f32 * BALL_SIZE;
+            let y = top - i as f32 * BALL_SIZE;
+            let p = vec2(x, y)
+                + (t * 0.4).min(5.0)
+                    * 10.0
+                    * vec2(
+                        (t * 0.7 + (i * j) as f32).sin(),
+                        (t * 0.9 + (2 * i * j) as f32).cos(),
+                    );
+
+            let color = shader(i, j, cols, rows, t);
+
+            draw.quad()
+                .points(
+                    p + BALL_SIZE * vec2(1., 1.),
+                    p + BALL_SIZE * vec2(1., -1.),
+                    p + BALL_SIZE * vec2(-1., -1.),
+                    p + BALL_SIZE * vec2(-1., 1.),
+                )
+                .xy(p)
+                .color(color);
+        }
+    }
+
+    draw.to_frame(app, &frame).unwrap();
+    utils::record::record(app, &frame);
+}

crates/utils/src/curves.rs

@@ -0,0 +1,31 @@
+use nannou::prelude::*;
+
+pub struct Chaikin {
+    pub points: Vec<Vec2>,
+}
+impl Chaikin {
+    pub fn new(points: Vec<Vec2>) -> Self {
+        Self { points }
+    }
+
+    pub fn points(&self, div: f32, n: usize) -> Vec<Vec2> {
+        let mut points = self.points.clone();
+        for _ in 0..n {
+            let first = *points.first().unwrap();
+            let last = *points.last().unwrap();
+            points = points
+                .windows(2)
+                .flat_map(|p| {
+                    let a = p[0];
+                    let b = p[1];
+
+                    [a + div * (b - a), a + (1.0 - div) * (b - a)]
+                })
+                .collect();
+
+            points.insert(0, first);
+            points.push(last);
+        }
+        points
+    }
+}

crates/utils/src/lib.rs

@@ -1,4 +1,5 @@
 pub mod color;
+pub mod curves;
 pub mod drawing;
 pub mod record;
 pub mod sequences;
@@ -49,3 +50,7 @@ pub fn vec2_range(min: f32, max: f32) -> Vec2 {
 pub fn ivec2_range(min: i32, max: i32) -> IVec2 {
     ivec2(random_range(min, max), random_range(min, max))
 }
+/// returns a random vector in the unit circle
+pub fn vec2_circ() -> Vec2 {
+    random_range(0., TAU).sin_cos().into()
+}

record.sh

@@ -8,6 +8,7 @@ if [[ -z $1 ]]; then
   echo -e "\t$0 packagename"
 else
   rm -rf "recordings/$1/frames"
+  mkdir -p "recordings/$1/videos"
   cargo run --release --package $1 -- -record
   filename="video$(( $(find recordings/$1/videos -type f -exec basename -s .mp4 {} \; | sed 's/^video//' | sort -n | tail -n1) + 1)).mp4"
   ffmpeg -framerate 60 -i "recordings/$1/frames/%03d.png" -pix_fmt yuv420p "recordings/$1/videos/$filename"