[C# / Xna] "Fotografare" lo schermo

[escocat]

Scusate non so nemmeno inserire il codice per bene..

My.cs:

namespace Progetto_Albireo  // NUOVO
{
    public class My : Microsoft.Xna.Framework.Game
    {
        //Generals          
        public static GraphicsDeviceManager Graphicsdevicemanager;
#if WIDE
        public static int RisX, RisY;
#else
        public static int RisX = 1350;
        public static int RisY = 650;
#endif
        RenderTarget2D renderTarget;
        Texture2D shadowMap;
        MemoryStream stream = new MemoryStream();
        ..........
        //Discovery
        public static Discovery Discovery =
            new Discovery(new Vector3(0f, 0f, 30000f),  //Position
            -Vector3.UnitZ,                               //Go
            10f,                                       //Speed
            -Vector3.UnitZ,                               //To
            Vector3.Up);                                  //Up
        ..........
        public static bool PhotoMode = false;
        public static KeyboardState KeyState;
        public static KeyboardState OldState = Keyboard.GetState();
        ..........
        public void KeyControl()
        {
            KeyState = Keyboard.GetState();
            if ((KeyState.IsKeyDown(Microsoft.Xna.Framework.Input.Keys.Escape)) & (OldState != KeyState))
                this.Exit();
            if (OldState != KeyState)
                Discovery.Ctrls(KeyState);
            OldState = KeyState;
        }
        public My()
        {
            Graphicsdevicemanager = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
        }

        protected override void Initialize()
        {
            ..........
            shadowMap = new Texture2D(GraphicsDevice, RisX, RisY);
            PresentationParameters pp = GraphicsDevice.PresentationParameters;
            renderTarget = new RenderTarget2D(GraphicsDevice, pp.BackBufferWidth, pp.BackBufferHeight,
                       false, GraphicsDevice.DisplayMode.Format, DepthFormat.Depth24);
            
            base.Initialize();
        }
        protected override void LoadContent()
        {
            ..........
        }
        protected override void Update(GameTime gametime)
        {
            ..........
            KeyControl();
            //DISCOVERY
            Discovery.Move();
        }

        protected override void Draw(GameTime gametime)
        {
            if (PhotoMode)
                GraphicsDevice.SetRenderTarget(renderTarget);
            ..........
            if (PhotoMode)
            {
                GraphicsDevice.SetRenderTarget(null);
                shadowMap = (Texture2D)renderTarget;
                shadowMap.SaveAsJpeg(stream, RisX, RisY);//o SaveAsPng()
                System.Drawing.Bitmap b = new System.Drawing.Bitmap(stream);
                b.Save(@"C:\frame.bmp");
                PhotoMode = false;
            }
 
        }

    }
}

Discovery.cs:

namespace Progetto_Albireo
{
    public struct Discovery
    {
        //principali
        public Vector3 Position;
        public Vector3 Go;
        public float Speed;
        public Vector3 To;
        public Vector3 Up;
        ..........
        public Discovery(Vector3 P, Vector3 G, float S, Vector3 T, Vector3 U)
        {
           ..........
        }

        ..........
        public void Ctrls(KeyboardState KeyState)
        {
            ..........
            if (KeyState.IsKeyDown(Microsoft.Xna.Framework.Input.Keys.Space))
            {
                if (My.PhotoMode)
                    My.PhotoMode = false;
                else
                    My.PhotoMode = true;
                
            }
            ..........
        }
        ..........

    }
}