starblue/pixelfoo-apps
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Extend cnoise to multiple palettes, add new default palette for 37C3

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This commit is contained in:
Juergen Stuber 2023-12-28 19:37:33 +01:00
parent c8f2c95f79
commit 22bacb9485
1 changed files with 36 additions and 14 deletions
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38
src/bin/cnoise/main.rs
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@ -5,6 +5,7 @@ use std::iter::repeat_with;
use std::thread::sleep;
use std::time::Duration;
use rand::seq::SliceRandom;
use rand::thread_rng;
use rand::Rng;
@ -21,16 +22,24 @@ fn send<T: Write>(w: &mut T, f: &Frame) -> std::io::Result<()> {
w.flush()
}
fn pick_color<R>(c0: Color, c1: Color, rng: &mut R) -> Color
#[derive(Clone, Debug)]
struct Palette(Vec<(Color, Color)>);
impl Palette {
fn pick<R>(&self, rng: &mut R, p: f64) -> Color
where
R: Rng,
{
if rng.gen::<f64>() < 0.5 {
let &(c0, c1) = self.0.choose(rng).unwrap();
if rng.gen::<f64>() < p {
c0.interpolate(c1, rng.gen::<f64>().powf(2.0))
} else {
Color::black()
}
}
}
const DEFAULT_ARG: usize = 37;
fn main() -> std::io::Result<()> {
let args = args().collect::<Vec<_>>();
@ -38,18 +47,31 @@ fn main() -> std::io::Result<()> {
let x_size = args[1].parse::<usize>().unwrap();
let y_size = args[2].parse::<usize>().unwrap();
eprintln!("screen size {}x{}", x_size, y_size);
let arg = args[3].parse::<usize>().unwrap_or(DEFAULT_ARG);
eprintln!("screen size {}x{}, arg {}", x_size, y_size, arg);
let t_frame = 0.040; // s
let delay = Duration::new(0, (1_000_000_000.0 * t_frame) as u32);
let c0 = Color::new(0, 138, 170);
let c1 = Color::new(0, 160, 95);
let mut rng = thread_rng();
let palette_35 = Palette(vec![(Color::new(0, 138, 170), Color::new(0, 160, 95))]);
let palette_37 = Palette(vec![
(Color::new(153, 0, 0), Color::new(255, 0, 0)),
(Color::new(0, 153, 0), Color::new(0, 255, 0)),
(Color::new(0, 0, 153), Color::new(0, 0, 255)),
(Color::new(153, 153, 0), Color::new(255, 255, 0)),
(Color::new(0, 153, 153), Color::new(0, 255, 255)),
(Color::new(153, 0, 153), Color::new(255, 0, 255)),
]);
let palette = match arg {
35 => palette_35,
_ => palette_37,
};
let mut frame = repeat_with(|| {
repeat_with(|| pick_color(c0, c1, &mut rng))
repeat_with(|| palette.pick(&mut rng, 0.5))
.take(x_size)
.collect::<Vec<_>>()
})
@ -58,7 +80,7 @@ fn main() -> std::io::Result<()> {
loop {
let x = rng.gen_range(0..x_size);
let y = rng.gen_range(0..y_size);
let c = pick_color(c0, c1, &mut rng);
let c = palette.pick(&mut rng, 0.5);
frame[y][x] = c;
let mut buf = Vec::with_capacity(x_size * y_size * 3);