通过编程的方式根据一组封闭的线绘制相同形状的箍筋

很多的时候我们希望给Revit的构件配筋， 通过编程的方式可以将你用手工绘制的模型线转化成箍筋。非常方便直观。

我们调用Rebar.CreateFromCurves() 函数来创建箍筋。

函数定义如下：

public static Rebar CreateFromCurves(
Document doc,
RebarStyle style,
RebarBarType barType,
RebarHookType startHook,
RebarHookType endHook,
Element host,
XYZ norm,
IList<Curve> curves,
RebarHookOrientation startHookOrient,
RebarHookOrientation endHookOrient,
bool useExistingShapeIfPossible,
bool createNewShape
)

创建箍筋需要注意的几个输入参数的理解：

第二个参数(RebarStyle style,)是 选择钢筋类型， 对于箍筋需要设置为： RebarStyle.StirupTie.  如果对于直线钢筋或纵筋设置为RebarStyle.Standard

第七个参数（XYZ norm） 是箍筋坐在平面的法向量方向。

请看下面的代码。

[Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]    [Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]    public class Command1 : IExternalCommand    {        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)        {            RebarBarType barType = null;            RebarHookType hookType = null;            Document doc = commandData.Application.ActiveUIDocument.Document;            Transaction transaction = new Transaction(doc, "CreateRebar Tool");            try            {                transaction.Start();                IList<Curve> curves1 = new List<Curve>();                ElementSet eleset = commandData.Application.ActiveUIDocument.Selection.Elements;                //需要确保这些选择的线是首尾相连的。                foreach (Element e in eleset)                {                    if (e is ModelLine)                    {                        Line l = (e as ModelLine).GeometryCurve as Line;                        Line line = doc.Application.Create.NewLineBound(l.get_EndPoint(0), l.get_EndPoint(1));                        curves1.Add(line);                    }                }                foreach (RebarBarType bt in doc.RebarBarTypes)                {                  barType = bt;                  break;                }                foreach (RebarHookType ht in doc.RebarHookTypes)                {                  hookType = ht;                }                {                                Reference hasPickOne = commandData.Application.ActiveUIDocument.Selection.PickObject(Autodesk.Revit.UI.Selection.ObjectType.Element);                FamilyInstance hostFi = doc.get_Element(hasPickOne.ElementId) as FamilyInstance;                Rebar rebar = CreateRebar1(commandData.Application.ActiveUIDocument, curves1, hostFi, barType, hookType);                          }            }            catch (Exception ex)            {                message += ex.Message;                return Autodesk.Revit.UI.Result.Failed ;            }            finally            {                transaction.Commit();            }            return  Result.Succeeded ;        }        Rebar CreateRebar1(            Autodesk.Revit.UI.UIDocument uidoc,            IList<Curve> curves,            FamilyInstance column,            RebarBarType barType,            RebarHookType hookType)        {                         LocationPoint location = column.Location as LocationPoint;            XYZ origin = location.Point;            Rebar rebar = Rebar.CreateFromCurves(uidoc.Document, Autodesk.Revit.DB.Structure.RebarStyle.StirrupTie, barType, hookType, hookType,                                column, new XYZ(0,0,1), curves, RebarHookOrientation.Left, RebarHookOrientation.Left, true, true);            return rebar;        }    }

转载请复制以下信息：
原文链接： http://blog.csdn.net/joexiongjin/article/details/8950238
作者：  叶雄进 , Autodesk ADN