// id to rgb color
pub fn id_to_color(id: u64) -> [u8; 3] {
    let mut hash = id;

    hash ^= hash >> 16;
    hash = hash.wrapping_mul(0x85ebca6b);
    hash ^= hash >> 13;
    hash = hash.wrapping_mul(0xb00b1355);
    hash ^= hash >> 16;

    let hue = (hash % 360) as f32;
    let saturation = 0.7 + ((hash >> 8) % 30) as f32 / 100.0; // 0.7-1.0 for vibrant colors
    let value = 0.6 + ((hash >> 16) % 40) as f32 / 100.0; // 0.6-1.0 to avoid dark colors

    hsv_to_rgb(hue, saturation, value)
}

fn hsv_to_rgb(h: f32, s: f32, v: f32) -> [u8; 3] {
    let c = v * s;
    let x = c * (1.0 - ((h / 60.0) % 2.0 - 1.0).abs());
    let m = v - c;

    let (r_prime, g_prime, b_prime) = if h < 60.0 {
        (c, x, 0.0)
    } else if h < 120.0 {
        (x, c, 0.0)
    } else if h < 180.0 {
        (0.0, c, x)
    } else if h < 240.0 {
        (0.0, x, c)
    } else if h < 300.0 {
        (x, 0.0, c)
    } else {
        (c, 0.0, x)
    };

    [
        ((r_prime + m) * 255.0) as u8,
        ((g_prime + m) * 255.0) as u8,
        ((b_prime + m) * 255.0) as u8,
    ]
}