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some cleaning and color flip-flop

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nek0 2024-10-06 00:26:45 +02:00
parent fdb19cd740
commit 41ad2cabee
1 changed files with 12 additions and 8 deletions
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20
src/main.rs
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@ -10,24 +10,28 @@ pub fn main() {
let sdl_context = sdl2::init().unwrap(); let sdl_context = sdl2::init().unwrap();
let video_subsystem = sdl_context.video().unwrap(); let video_subsystem = sdl_context.video().unwrap();
let window = match (video_subsystem.window("fractals", 800, 600) let window = match video_subsystem.window("fractals", 800, 600)
.position_centered() .position_centered()
.build()) { .build() {
Ok(w) => { w }, Ok(w) => { w },
Err(_) => { panic!("Can not build window!") } Err(_) => { panic!("Can not build window!") }
}; };
let mut canvas = window.into_canvas().build().unwrap(); let mut canvas = window.into_canvas().build().unwrap();
canvas.set_draw_color(Color::RGB(0, 255, 255));
canvas.clear();
canvas.present();
let mut event_pump = sdl_context.event_pump().unwrap(); let mut event_pump = sdl_context.event_pump().unwrap();
let mut i = 0; let mut i = 0;
let mut flip = true;
'running: loop { 'running: loop {
i = (i + 1) % 255; if i % 255 == 0 {
flip = !flip;
}
if flip && i > 0 {
i = i - 1;
} else {
i = i + 1;
}
canvas.set_draw_color(Color::RGB(i, 64, 255 - i)); canvas.set_draw_color(Color::RGB(i, 64, 255 - i));
canvas.clear(); canvas.clear();
for event in event_pump.poll_iter() { for event in event_pump.poll_iter() {
@ -41,6 +45,6 @@ pub fn main() {
} }
canvas.present(); canvas.present();
::std::thread::sleep(Duration::new(0, 1_000_000_000 / 60)); ::std::thread::sleep(Duration::from_millis(1000 / 60));
} }
} }