91 lines
2.3 KiB
Rust
91 lines
2.3 KiB
Rust
use std::env::args;
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use std::fs::File;
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use std::io::stdout;
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use std::io::Read;
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use std::io::Write;
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use std::iter::repeat_with;
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use std::thread::sleep;
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use std::time::Duration;
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use rand::thread_rng;
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use rand::Rng;
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use pixelfoo::color::Color;
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type Frame = Vec<Vec<Color>>;
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fn send<T: Write>(w: &mut T, f: &Frame) -> std::io::Result<()> {
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for l in f {
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for c in l {
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w.write_all(&c.rgb())?;
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}
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}
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w.flush()
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}
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fn pick_color<R>(c0: Color, c1: Color, rng: &mut R) -> Color
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where
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R: Rng,
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{
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if rng.gen::<f64>() < 0.5 {
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c0.interpolate(c1, rng.gen::<f64>().powf(2.0))
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} else {
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Color::black()
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}
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}
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fn main() -> std::io::Result<()> {
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let args = args().collect::<Vec<_>>();
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eprintln!("executing {}", args[0]);
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let x_size = args[1].parse::<usize>().unwrap();
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let y_size = args[2].parse::<usize>().unwrap();
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eprintln!("screen size {}x{}", x_size, y_size);
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let mut f = File::open("apps/pet-2.bin")?;
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let mut buffer = Vec::new();
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f.read_to_end(&mut buffer)?;
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let t_frame = 0.040; // s
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let delay = Duration::new(0, (1_000_000_000.0 * t_frame) as u32);
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let c0 = Color::new(0, 138, 170);
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let c1 = Color::new(0, 160, 95);
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let mut rng = thread_rng();
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let mut frame = repeat_with(|| {
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repeat_with(|| pick_color(c0, c1, &mut rng))
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.take(x_size)
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.collect::<Vec<_>>()
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})
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.take(y_size)
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.collect::<Vec<_>>();
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loop {
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if rng.gen::<f64>() < 0.01 {
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let x = rng.gen_range(0, x_size / 8);
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let y = rng.gen_range(0, y_size / 8);
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let color = pick_color(c0, c1, &mut rng);
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let start_index = rng.gen_range(0, buffer.len() / 8) * 8;
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for i in 0..8 {
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let b = buffer[start_index + i];
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for j in 0..8 {
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frame[y * 8 + i][x * 8 + j] = {
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if b & (1 << j) != 0 {
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color
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} else {
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Color::black()
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}
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};
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}
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}
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}
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let mut buf = Vec::with_capacity(x_size * y_size * 3);
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send(&mut buf, &frame)?;
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stdout().write_all(&buf)?;
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stdout().flush()?;
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sleep(delay);
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}
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}
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