starblue/pixelfoo-apps
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Code Issues Releases Activity

Factor out color handling into common module.

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This commit is contained in:
Juergen Stuber
2018-11-30 20:34:08 +01:00
parent e15ac35f18
commit 610c864cd9
5 changed files with 73 additions and 147 deletions
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56
src/bin/bimood/main.rs
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@ -5,64 +5,14 @@ use std::iter::repeat;
use std::thread::sleep;
use std::time::Duration;
#[derive(Clone, Copy, Debug)]
struct Color(u8, u8, u8);
impl Color {
fn black() -> Color {
Color(0, 0, 0)
}
fn white() -> Color {
Color(255, 255, 255)
}
fn gray50() -> Color {
Color(128, 128, 128)
}
fn red() -> Color {
Color(255, 0, 0)
}
fn green() -> Color {
Color(0, 255, 0)
}
fn blue() -> Color {
Color(0, 0, 255)
}
fn yellow() -> Color {
Color(255, 255, 0)
}
fn cyan() -> Color {
Color(0, 255, 255)
}
fn magenta() -> Color {
Color(255, 0, 255)
}
fn complement(&self) -> Color {
Color(255 - self.0, 255 - self.1, 255 - self.2)
}
}
fn interpolate_u8(b0: u8, b1: u8, a: f64) -> u8 {
let b0 = b0 as f64;
let b1 = b1 as f64;
((1.0 - a) * b0 + a * b1) as u8
}
fn interpolate(c0: Color, c1: Color, a: f64) -> Color {
Color(
interpolate_u8(c0.0, c1.0, a),
interpolate_u8(c0.1, c1.1, a),
interpolate_u8(c0.2, c1.2, a),
)
}
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 {
let Color(r, g, b) = c;
let buf = &[*r, *g, *b];
w.write_all(buf)?;
w.write_all(&c.rgb())?;
}
}
w.flush()
@ -109,7 +59,7 @@ fn main() -> std::io::Result<()> {
eprint!("delta_a {}", delta_a);
loop {
let c0 = interpolate(previous_color, next_color, a);
let c0 = previous_color.interpolate(next_color, a);
let c1 = c0.complement();
let mut frame = repeat(repeat(c0).take(x_size).collect::<Vec<_>>())
.take(y_size)