Autodesk Revit 参数异常，曲线不形成闭合连续环

Question

我有用 C# 制作的 Revit 插件代码：

    namespace CreateFloors
    {
        [Transaction(TransactionMode.Manual)]
        public class Command : IExternalCommand
        {
        public Result Execute(
          ExternalCommandData commandData,
          ref string message,
          ElementSet elements)
        {
            UIApplication uiapp = commandData.Application;
            UIDocument uidoc = uiapp.ActiveUIDocument;
            Application app = uiapp.Application;
            Document doc = uidoc.Document;

            FilteredElementCollector levels
              = new FilteredElementCollector(doc)
                .OfClass(typeof(Level));

            FloorType floorType
              = new FilteredElementCollector(doc)
                .OfClass(typeof(FloorType))
                .First<Element>(
                  e => e.Name.Equals("Generic - 12\""))
                  as FloorType;

            Element profileElement
              = new FilteredElementCollector(doc)
                .OfClass(typeof(FamilyInstance))
                .OfCategory(BuiltInCategory.OST_GenericModel)
                .First<Element>(
                  e => e.Name.Equals("WP1"));

            CurveArray slabCurves = new CurveArray();

            GeometryElement geo = profileElement.get_Geometry(new Options());

            foreach (GeometryInstance inst in geo)
            {
                foreach (GeometryObject obj in inst.SymbolGeometry)
                {
                    if (obj is Curve)
                    {
                        slabCurves.Append(obj as Curve);
                    }
                }
            }

            XYZ normal = XYZ.BasisZ;

            Transaction trans = new Transaction(doc);
            trans.Start("Create Floors");

            foreach (Level level in levels)
            {
                Floor newFloor = doc.Create.NewFloor(slabCurves, floorType, level, false, normal);

                newFloor.get_Parameter(BuiltInParameter.FLOOR_HEIGHTABOVELEVEL_PARAM).Set(0);
            }

            trans.Commit();

            return Result.Succeeded;
        }
    }
}

当我从包含通用模型的 Revit 项目跟踪此代码时，抛出下一个异常：

Autodesk.Revit.Exceptions.ArgumentException: '曲线没有形成闭合的连续环。

我有一个连续的结构。我该如何解决这个问题？

Answer 1

您的曲线可能没有按正确的连续顺序排序。

您可以实现一些图形调试显示，将曲线一条一条地显示为模型线，并在每条曲线旁边添加一个数字以查看您实际拥有的顺序。

这是 The Building Coder 在 Sorting Face Loop Edges 上的讨论。

您也许可以使用 ExporterIfcUtils to sort and validate them。

Autodesk Revit 参数异常，曲线不形成闭合连续环

Autodesk Revit Argument Exception, The curves do not form a closed contiguous loop

c#

revit

revit-api