using Autodesk.Revit.DB; using Autodesk.Revit.UI; namespace ShrlAlgoToolkit.Revit.Assists; /// /// 三维视图可用 /// public class EnableInView3D : IExternalCommandAvailability { public bool IsCommandAvailable(UIApplication applicationData, CategorySet selectedCategories) => applicationData.ActiveUIDocument?.Document.ActiveView is View3D && applicationData.ActiveUIDocument?.Document.IsFamilyDocument == false; }