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