public ShellViewModel() { Title = "Hello Caliburn.Micro"; Viewport1 = new ViewportViewModel(); Viewport2 = new ViewportViewModel(); camera = new PerspectiveCamera() { Position = new Point3D(0, -10, 0), LookDirection = new Vector3D(0, 10, 0), UpDirection = new Vector3D(0, 0, 1), FieldOfView = 60, }; Viewport1.Camera = camera; Viewport2.Camera = camera; }