Use minifb to display the generated image of type image::RgbImage in a window

winodw.rs

// image = "*"
// minifb = "0.19.1"
use crate::{
    IMAGE_HEIGHT, IMAGE_WIDTH,
};
use minifb::{Key, Window, WindowOptions};
use image::{RgbImage};

pub fn draw_in_window(mut pixels: RgbImage) -> std::io::Result<()>
{
    let mut buffer: Vec<u32> = vec![0; (IMAGE_WIDTH * IMAGE_HEIGHT) as usize];
    let mut window = Window::new(
        "ESC to exit",
        IMAGE_WIDTH as usize, IMAGE_HEIGHT as usize,
        WindowOptions {
            topmost: true,
            ..WindowOptions::default()
        },
    )
    .unwrap_or_else(|e| {
        panic!("{}", e);
    });

    // Limit to max 30fps
    window.limit_update_rate(Some(std::time::Duration::from_micros(16600*2)));

    for (i, (_, _, pixel)) in buffer.iter_mut().zip(pixels.enumerate_pixels_mut()) {
        *i = u32::from_be_bytes([0, pixel[0], pixel[1], pixel[2]]);
    }

    window.update_with_buffer(&buffer, IMAGE_WIDTH as usize, IMAGE_HEIGHT as usize).unwrap();

    while window.is_open() && !window.is_key_down(Key::Escape) {
        window.update();
    }

    Ok(())
}