RobustToolbox/Robust.Client/UserInterface/CustomControls/MainViewportContainer.cs

using Robust.Client.Graphics;
using Robust.Shared.Timing;

namespace Robust.Client.UserInterface.CustomControls
{
    /// <summary>
    ///     A viewport container shows a viewport.
    ///     This one is particularly gnarly because it has the code for the main viewport stuff.
    /// </summary>
    public sealed class MainViewportContainer : ViewportContainer
    {
        private readonly IEyeManager _eyeManager;

        public MainViewportContainer(IEyeManager eyeManager)
        {
            _eyeManager = eyeManager;
            AlwaysRender = true;
        }

        protected override void FrameUpdate(FrameEventArgs args)
        {
            base.FrameUpdate(args);

            if(Viewport != null)
                Viewport.Eye = _eyeManager.CurrentEye;
        }
    }
}