private void OpenOctane_Click(object sender, RoutedEventArgs e) { var filename = "octanetest.obj"; Viewport3DHelper.Export(view1.Viewport, filename); var fullPath = Path.GetFullPath(filename); var os = new OctaneLauncher { MeshNode = filename, MeshFile = fullPath, ProjectFile = "octanetest.ocs" }; os.SetCamera(view1.Viewport.Camera as ProjectionCamera); os.Start(); }