Revit API C# 插入和旋转族

Revit API C# Insert and Rotate Family

我正在尝试插入一个元素并将其旋转 90 度,但在获取 ElementId 以使用 ElementTransformUtils.RotateElement 时遇到问题,我已尝试按顺序遵循 https://thebuildingcoder.typepad.com/blog/2010/06/place-family-instance.html在我插入元素并通过 GetAddedElementIds 获取元素 Id 之前设置一个事件处理程序,但我无法让它为我工作:(

在这方面,我将不胜感激。

下面是我的代码,我开始一个事务来放置家庭(符号),我做了一个 for 循环来插入 5 次,我想将插入的元素旋转 90 度,我尝试在for 循环在插入每个元素时旋转它们,但也许只在 1 条指令中旋转所有插入的元素会更好?

using (Transaction trans = new Transaction(doc, "Place Family"))
            {
                trans.Start();
                if (!symbol.IsActive)
                {
                    symbol.Activate();
                }
                for (int x = 0; x < 5; x++)
                {
                    doc.Create.NewFamilyInstance(new XYZ(x, 0, 0), symbol, Autodesk.Revit.DB.Structure.StructuralType.NonStructural);
                }

                    trans.Commit();
            }

非常感谢。

--编辑--

我确实认为可以使用的代码如下所示,但是,当我尝试执行它时,它指出:"Error: Sequence contains no elements"

代码:

                    if (!symbol4.IsActive)
                {
                    symbol4.Activate();
                }
                for (int x = 0; x < 4; x++)
                {
                    double xloc = x * BayLength / 304.8;
                    _added_element_ids.Clear();
                    app.DocumentChanged += new EventHandler<DocumentChangedEventArgs>(OnDocumentChanged);
                    doc.Create.NewFamilyInstance(new XYZ(xloc, 0, 1.021), symbol4, Autodesk.Revit.DB.Structure.StructuralType.NonStructural);
                    app.DocumentChanged -= new EventHandler<DocumentChangedEventArgs>(OnDocumentChanged);
                    ElementId LastModifiedElementId = _added_element_ids.Last();
                    XYZ p1= new XYZ(xloc, 0.0, 1.021);
                    XYZ p2 = new XYZ(xloc, 0.0, 2.021);
                    Line Axis = Line.CreateBound(p1, p2);
                    double angle = -90 * Math.PI / 180;
                    ElementTransformUtils.RotateElement(doc, LastModifiedElementId, Axis, angle);
                }
                void OnDocumentChanged(object sender, DocumentChangedEventArgs e)
                {
                    _added_element_ids.AddRange(e.GetAddedElementIds());
                }

如有任何帮助,我将不胜感激,谢谢

有两种方法可以解决这个问题,而且都不需要使用 DocumentChanged 事件。困难的部分是弄清楚旋转轴使用什么。 第一种方法在创建后立即使用 RotateElement:

    public void PlaceAndRotateFamilyMethod1()
    {
        Document doc = this.ActiveUIDocument.Document;

        FamilySymbol symbol = GetFamilySymbolToPlace(doc);

        using (Transaction trans = new Transaction(doc, "Place Family"))
        {
            trans.Start();
            if (!symbol.IsActive)
            {
                symbol.Activate();
            }
            for (int x = 0; x < 5; x++)
            {
                FamilyInstance fi = doc.Create.NewFamilyInstance(new XYZ(x, 0, 0), symbol, Autodesk.Revit.DB.Structure.StructuralType.NonStructural);

                XYZ point1 = new XYZ(0, 10, 0);
                XYZ point2 = new XYZ(0, 10, 10);
                Line axis = Line.CreateBound(point1, point2);

                double angleToRotate = 45;

                ElementTransformUtils.RotateElement(doc, fi.Id, axis, ConvertToRadians(angleToRotate));
            }

            trans.Commit();
        }
    }

第二种方法使用第二个事务来旋转元素,因为在这种方法中我使用了元素的边界框来获取它的中心。必须先完成创建事务才能获取其 BoundingBox。

    public void PlaceAndRotateFamilyMethod2()
    {
        Document doc = this.ActiveUIDocument.Document;

        FamilySymbol symbol = GetFamilySymbolToPlace(doc);

        List<FamilyInstance> newFamInstToRotate = new List<FamilyInstance>();

        using (Transaction trans = new Transaction(doc, "Place Family"))
        {
            trans.Start();
            if (!symbol.IsActive)
            {
                symbol.Activate();
            }
            for (int x = 0; x < 5; x++)
            {
                FamilyInstance fi = doc.Create.NewFamilyInstance(new XYZ(x, 0, 0), symbol, Autodesk.Revit.DB.Structure.StructuralType.NonStructural);
                newFamInstToRotate.Add(fi);
            }

            trans.Commit();
        }

        using (Transaction trans = new Transaction(doc, "Rotate Families"))
        {
            trans.Start();
            foreach (FamilyInstance fi in newFamInstToRotate)
            {
                XYZ center = (fi.get_BoundingBox(doc.ActiveView).Max + fi.get_BoundingBox(doc.ActiveView).Min) * 0.5;
                Line axis = Line.CreateBound(center, center + XYZ.BasisZ);
                double angleToRotate = 45;

                ElementTransformUtils.RotateElement(doc, fi.Id, axis, ConvertToRadians(angleToRotate));
            }
            trans.Commit();
        }
    }

辅助方法:

    private FamilySymbol GetFamilySymbolToPlace(Document doc)
    {
        FamilySymbol symbol = null;
        foreach (FamilySymbol fSym in new FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Furniture)) 
        {
            if (fSym.FamilyName == "Desk" && fSym.Name == "60\" x 30\"") 
            {
                symbol = fSym;
                break;
            }
        }
        return symbol;
    }

    private double ConvertToRadians(double angle)
    {
        return (Math.PI / 180) * angle;
    }