main
annieversary 2021-08-28 00:21:10 +02:00
parent c1fef9993b
commit b21d7d56b3
3 changed files with 175 additions and 0 deletions

8
Cargo.lock generated
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@ -2356,6 +2356,14 @@ dependencies = [
"utils",
]
[[package]]
name = "subtitled11"
version = "0.1.0"
dependencies = [
"nannou",
"utils",
]
[[package]]
name = "subtitled2"
version = "0.1.0"

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@ -0,0 +1,8 @@
[package]
name = "subtitled11"
version = "0.1.0"
edition = "2018"
[dependencies]
nannou = "0.17"
utils = { path = "../utils" }

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@ -0,0 +1,159 @@
use nannou::prelude::*;
fn main() {
nannou::app(model).update(update).simple_window(view).run();
}
struct Model {
automata: Automata,
row: usize,
cube: Vec<Vec4>,
}
fn model(_app: &App) -> Model {
// generate all the points in the cube
let mut cube = vec![];
let p = [-1.0, 1.0];
for &x in &p {
for &y in &p {
for &z in &p {
for &w in &p {
cube.push(vec4(x, y, z, w));
}
}
}
}
Model {
automata: Automata::new(),
row: 0,
cube,
}
}
fn update(app: &App, model: &mut Model, _update: Update) {
let _t = app.elapsed_frames() as f32 / 60.0;
if app.elapsed_frames() % 10 == 0 {
model.automata.advance();
model.row += 1;
}
}
fn rot(angle: f32) -> Mat4 {
// 4d rotations https://math.stackexchange.com/questions/1402362/rotation-in-4d
let m = mat4(
vec4(angle.cos(), angle.sin(), 0.0, 0.0),
vec4(-angle.sin(), angle.cos(), 0.0, 0.0),
vec4(0.0, 0.0, 1.0, 0.0),
vec4(0.0, 0.0, 0.0, 1.0),
) * mat4(
vec4(1.0, 0.0, 0.0, 0.0),
vec4(0.0, angle.cos(), angle.sin(), 0.0),
vec4(0.0, -angle.sin(), angle.cos(), 0.0),
vec4(0.0, 0.0, 0.0, 1.0),
);
let angle = -angle * 2.0;
m * mat4(
vec4(1.0, 0.0, 0.0, 0.0),
vec4(0.0, 1.0, 0.0, 0.0),
vec4(0.0, 0.0, angle.cos(), angle.sin()),
vec4(0.0, 0.0, -angle.sin(), angle.cos()),
)
}
fn view(app: &App, model: &Model, frame: Frame) {
let t = frame.nth() as f32 / 60.0;
// background
let draw = app.draw();
if frame.nth() == 0 {
draw.background().color(SNOW);
} else {
let win = app.window_rect();
draw.rect()
.wh(win.wh())
.color(srgba(1.0, 250.0 / 255.0, 250.0 / 255.0, 0.01));
}
// draw automata
let (l, top, w, h) = app.window_rect().l_t_w_h();
const BALL_SIZE: f32 = 6.0;
let cols = w / BALL_SIZE;
let rows = h / BALL_SIZE;
for (i, &b) in model.automata.points.iter().enumerate() {
if b && i as f32 <= cols {
let x = l + (i as f32 % cols) * BALL_SIZE;
let y = top - (model.row as f32 % rows) * BALL_SIZE;
let p = vec2(x, y);
let h = model.row as f32 / 360.0;
draw.ellipse()
.radius(BALL_SIZE / 2.0)
.xy(p)
.color(hsl(h.fract(), 0.5, 0.5));
}
}
// draw center square
draw.rect().w_h(400.0, 400.0).color(SNOW);
// draw 4d cube
let p: Vec<_> = model
.cube
.iter()
.map(|&v| {
// rotate
let v = rot(t) * v;
// project onto xz plane cause it's the coolest one
100.0 * vec2(v.x, v.z)
})
.collect::<Vec<_>>();
// make all pairs of points
let p = p
.iter()
.enumerate()
.flat_map(|(i, a)| p[i + 1..].iter().map(move |b| (a, b)));
for (&a, &b) in p {
draw.line().points(a, b).color(BLACK);
}
draw.to_frame(app, &frame).unwrap();
utils::record::record(app, &frame);
}
struct Automata {
points: Vec<bool>,
rule: Vec<bool>,
}
impl Automata {
fn new() -> Self {
let points = (0..200).map(|_| random::<bool>()).collect();
let rule = (0..8).map(|_| random::<bool>()).collect();
Self { points, rule }
}
fn advance(&mut self) {
for i in 0..self.points.len() {
let i1 = (i + 1) % self.points.len();
let im1 = if i == 0 { self.points.len() - 1 } else { i - 1 };
let v = (self.points[im1], self.points[i], self.points[i1]);
self.points[i] = match v {
(false, false, false) => self.rule[0],
(false, false, true) => self.rule[1],
(false, true, false) => self.rule[2],
(false, true, true) => self.rule[3],
(true, false, false) => self.rule[4],
(true, false, true) => self.rule[5],
(true, true, false) => self.rule[6],
(true, true, true) => self.rule[7],
}
}
}
}