2016RevitAPI一次性生成多个构件

今天检索API发现一个比较有意思的类：FamilyInstanceCreationData
通过传入参数可以使用doc.Create.NewFamilyInstances2()一次生成所有构件。
这个类可以用于翻模或调整构件的情况。在方法中自带两种方法.axis&&.RotateAngle可以省却
我之前生成构建后ElementTransformUtils.RotateElement()使用的步骤，比以前挨个生成在代码层面要简洁一些，目前还未测试出时间差别。下面是官方里面的示例。

ICollection<ElementId> BatchCreateColumns(Autodesk.Revit.DB.Document document, Level level)
{
    List<FamilyInstanceCreationData> fiCreationDatas = new List<FamilyInstanceCreationData>();

    //ElementSet elementSet = null;
    ICollection<ElementId> elementSet = null;

    //Try to get a FamilySymbol
    FamilySymbol familySymbol = null;
    FilteredElementCollector collector = new FilteredElementCollector(document);
    ICollection<Element> collection = collector.OfClass(typeof(FamilySymbol)).ToElements();
    foreach (Element e in collection)
    {
        familySymbol = e as FamilySymbol;
        if (null != familySymbol.Category)
        {
            if ("Structural Columns" == familySymbol.Category.Name)
            {
                break;
            }
        }
    }

    if (null != familySymbol)
    {
        //Create 10 FamilyInstanceCreationData items for batch creation 
        for (int i = 1; i < 11; i++)
        {
            XYZ location = new XYZ(i * 10, 100, 0);
            FamilyInstanceCreationData fiCreationData =
                new FamilyInstanceCreationData(location, familySymbol, level,  StructuralType.Column);

            if (null != fiCreationData)
            {
                fiCreationDatas.Add(fiCreationData);
            }
        }

        if (fiCreationDatas.Count > 0)
        {
            // Create Columns
            elementSet = document.Create.NewFamilyInstances2(fiCreationDatas);
        }
        else
        {
            throw new Exception("Batch creation failed.");
        }
    }
    else
    {
        throw new Exception("No column types found.");
    }

    return elementSet;
}