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using System;
using System.Diagnostics;
using System.Drawing;
using OpenTK;
using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL4;
namespace Unicity.Renderer
{
public class RenderWindow : IDisposable
{
const int UPS = 60;
internal GameWindow window = null;
Stopwatch loopTimer = new Stopwatch();
public event EventHandler Init;
public event EventHandler Update;
public event EventHandler Render;
public event EventHandler Destroy;
public int Width
{
get => window.ClientSize.Width;
set => window.ClientSize = new Size(value, window.ClientSize.Height);
}
public int Height
{
get => window.ClientSize.Height;
set => window.ClientSize = new Size(window.ClientSize.Width, value);
}
public string Title
{
get => window.Title;
set => window.Title = value;
}
bool running = false;
public RenderWindow(int width, int height, string title)
{
window = new GameWindow(width, height, GraphicsMode.Default, title, GameWindowFlags.Default);
window.UpdateFrame += Window_UpdateFrame;
window.RenderFrame += Window_RenderFrame;
window.Unload += Window_Unload;
window.Resize += Window_Resize;
}
private void Window_UpdateFrame(object sender, FrameEventArgs e)
{
Update?.Invoke(this, EventArgs.Empty);
}
private void Window_RenderFrame(object sender, FrameEventArgs e)
{
Render?.Invoke(this, EventArgs.Empty);
window.SwapBuffers();
}
private void Window_Unload(object sender, EventArgs e)
{
Destroy?.Invoke(this, EventArgs.Empty);
}
private void Window_Resize(object sender, EventArgs e)
{
GL.Viewport(0, 0, Width, Height);
Render?.Invoke(this, EventArgs.Empty);
window.SwapBuffers();
}
public void Open()
{
if (running)
{
return;
}
Init?.Invoke(this, EventArgs.Empty);
window.VSync = VSyncMode.Off;
window.Run(UPS, 0);
running = true;
}
public double GetFPS()
{
return window.RenderFrequency;
}
bool disposed = false;
protected virtual void Dispose(bool disposing)
{
// Return of already disposed
if (disposed)
{
return;
}
if (disposing)
{
// Free managed objects here
}
// Dispose of any unmanaged resources
window?.Dispose();
// Set disposed flag to true
disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
}
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