starblue/pixelfoo-apps
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Preset colored noise.

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This commit is contained in:
Juergen Stuber 2018-12-28 14:57:41 +01:00
parent eb7ac1c1f1
commit eff04faee4
1 changed files with 20 additions and 11 deletions
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31
src/bin/cnoise/main.rs
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@ -1,7 +1,7 @@
use std::env::args; use std::env::args;
use std::io::stdout; use std::io::stdout;
use std::io::Write; use std::io::Write;
use std::iter::repeat; use std::iter::repeat_with;
use std::thread::sleep; use std::thread::sleep;
use std::time::Duration; use std::time::Duration;
@ -21,6 +21,17 @@ fn send<T: Write>(w: &mut T, f: &Frame) -> std::io::Result<()> {
w.flush() 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<()> { fn main() -> std::io::Result<()> {
let args = args().collect::<Vec<_>>(); let args = args().collect::<Vec<_>>();
eprintln!("executing {}", args[0]); eprintln!("executing {}", args[0]);
@ -37,19 +48,17 @@ fn main() -> std::io::Result<()> {
let mut rng = thread_rng(); let mut rng = thread_rng();
let mut frame = repeat(repeat(Color::black()).take(x_size).collect::<Vec<_>>()) let mut frame = repeat_with(|| {
.take(y_size) repeat_with(|| pick_color(c0, c1, &mut rng))
.collect::<Vec<_>>(); .take(x_size)
.collect::<Vec<_>>()
})
.take(y_size)
.collect::<Vec<_>>();
loop { loop {
let x = rng.gen_range(0, x_size); let x = rng.gen_range(0, x_size);
let y = rng.gen_range(0, y_size); let y = rng.gen_range(0, y_size);
let c = { let c = pick_color(c0, c1, &mut rng);
if rng.gen::<f64>() < 0.5 {
c0.interpolate(c1, rng.gen::<f64>().powf(2.0))
} else {
Color::black()
}
};
frame[y][x] = c; frame[y][x] = c;
let mut buf = Vec::with_capacity(x_size * y_size * 3); let mut buf = Vec::with_capacity(x_size * y_size * 3);