#![no_std]
#![no_main]

use core::num::Wrapping;
use lights::{
    gamma::GammaCorrector,
    PixelIterator,
    rgb::{
        blend,
        gray,
        Rgb
    }
};
use lights_hal::{boot, delay, entry};

#[entry]
fn main() -> ! {
    let mut lights = GammaCorrector(boot());

    let mut red = Wrapping(0u8);
    loop {
        red += Wrapping(1);

        let start = Rgb(red.0, 0, 0);
        let end = Rgb(0, 100, 100u8.saturating_sub(red.0));

        (0..20u8).map(
            |x| blend(start, end, gray(x.saturating_mul(15)))
        ).render_to(&mut lights);
        delay(500_000);
    }
}