// use egui_overlay::{EguiOverlay, OverlayApp};
// use egui_render_three_d::ThreeDBackend;
// use egui_window_glfw_passthrough::glfw::Context;
// use egui_window_glfw_passthrough::{GlfwBackend, GlfwConfig};

// use crate::Core_Bringup;

// // struct CustomEguiOverlay {
// //   backend:
// // }

// fn init() {
//     let mut glfw_backend = GlfwBackend::new(GlfwConfig::default());
//     let mut glfw_window_ptr = glfw_backend.window.window_ptr();

//     unsafe {
//         // Cast the window pointer to the expected type
//         let window_ptr = glfw_window_ptr as *mut crate::GLFWwindow;
//         Core_Bringup(window_ptr);
//     };
// }

// /// After implementing [`EguiOverlay`], just call this function with your app data
// pub fn start<T: EguiOverlay + 'static>(user_data: T) {
//     let mut glfw_backend = GlfwBackend::new(GlfwConfig {
//         // this closure will be called before creating a window
//         glfw_callback: Box::new(|gtx| {
//             // some defualt hints. it is empty atm, but in future we might add some convenience hints to it.
//             (egui_window_glfw_passthrough::GlfwConfig::default().glfw_callback)(gtx);
//             // scale the window size based on monitor scale. as 800x600 looks too small on a 4k screen, compared to a hd screen in absolute pixel sizes.
//             gtx.window_hint(egui_window_glfw_passthrough::glfw::WindowHint::ScaleToMonitor(true));
//         }),
//         opengl_window: Some(true), // macos doesn't support opengl.
//         transparent_window: Some(false),
//         window_title: "Celeritas egui".into(),
//         ..Default::default()
//     });

//     // always on top
//     // glfw_backend.window.set_floating(true);
//     // disable borders/titlebar
//     // glfw_backend.window.set_decorated(false);

//     let latest_size = glfw_backend.window.get_framebuffer_size();
//     let latest_size = [latest_size.0 as _, latest_size.1 as _];

//     let default_gfx_backend = {
//         ThreeDBackend::new(
//             egui_render_three_d::ThreeDConfig {
//                 ..Default::default()
//             },
//             |s| glfw_backend.get_proc_address(s),
//             latest_size,
//         )
//     };

//     let glfw_window_ptr = glfw_backend.window.window_ptr();
//     unsafe {
//         // Cast the window pointer to the expected type
//         let window_ptr = glfw_window_ptr as *mut crate::GLFWwindow;
//         Core_Bringup(window_ptr);
//     };

//     let overlap_app = OverlayApp {
//         user_data,
//         egui_context: Default::default(),
//         default_gfx_backend,
//         glfw_backend,
//     };

//     overlap_app.enter_event_loop();
// }