How to implement a full frame rate animation?

[wspl]

I want to implement an animation that will run at 60 fps on my computer. But it's not a good idea to call request_redraw() directly on Event::RedrawEventsCleared and set control_flow to ControlFlow::Poll, which will run as many times as possible instead of matching the frame rate supported by my device. This consumes a lot of CPU.

Maybe control over rendering frequency is not a part of winit? Is there another crate or API I can use to control the rendering frequency?

[juancampa]

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[Cactice]

I think something like this is what you're supposed to do. However this doesn't work well for wasm.

        match *control_flow {
            ControlFlow::Exit => (),
            _ => {
                if let Some(window) = &window {
                    window.request_redraw();
                }
                let start_time = Instant::now();
                let elapsed_time_millis =
                    Instant::now().duration_since(start_time).as_millis() as u64;
                let wait_millis = match 1000 / TARGET_FPS >= elapsed_time_millis {
                    true => 1000 / TARGET_FPS - elapsed_time_millis,
                    false => 0,
                };
                let new_instant = start_time + std::time::Duration::from_millis(wait_millis);
                *control_flow = ControlFlow::WaitUntil(new_instant);
            }
        }