public ModelDrawingContext(GraphicsDevice graphics) { _Device = graphics; _Device.DepthStencilState = DepthStencilState.Default; _View = Matrix.Invert(Matrix.Identity); _Projection = SceneUtils.CreatePerspectiveFieldOfView(_FieldOfView, _Device.Viewport.AspectRatio, _NearPlane); _DistanceComparer = ModelInstance.GetDistanceComparer(-_View.Translation); }