[IfcAnnotationFillArea.OuterBoundary property OuterBoundary public IfcCurve OuterBoundary { get; set; } 也可以看看 class IfcCurve class IfcAnnotationFillArea 命名空间 Aspose.CAD.FileFormats.Ifc.IFC2X3.Entities 部件 Aspose.CAD]
