incorrect rotation direction

DroneSimulator/Screen2D.cs

@@ -101,6 +101,7 @@ namespace DroneSimulator
         private static Bitmap DrawImageByQuaternion(Bitmap bmp, Quaternion orientation)
         {
             if (bmp == null) return null;
+            orientation.X = -orientation.X;
 
             int canvasSize = (int)System.Math.Sqrt(bmp.Width * bmp.Width + bmp.Height * bmp.Height);
             Bitmap result = new Bitmap(canvasSize, canvasSize);