Rust Egui实现动画效果指南：探索GUI框架的动态特性与应用实践

use egui::{Context, Color32, Ui};
use std::time::{Duration, Instant};

fn main() {
    let options = egui::Options::default();
    let ctx = Context::new(options);

    let start_time = Instant::now();
    let mut frame_time = Duration::new(0, 0);

    loop {
        let now = Instant::now();
        frame_time = now.duration_since(start_time);
        start_time = now;

        let ui = &mut Ui::new(&ctx);

        // 更新动画状态
        let progress = (frame_time % Duration::from_secs(2)).as_secs_f32() / 2.0;

        // 绘制动画效果
        ui.add(egui::Slider::new(&mut ui.id(), 0.0..=1.0, progress).text("Progress"));

        // 渲染UI
        ctx.run(ui);

        // 控制帧率
        if frame_time > Duration::from_secs(1.0 / 60.0) {
            std::thread::sleep(Duration::from_millis((1.0 / 60.0) - frame_time.as_millis()));
        }
    }
}