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Revit二次开发钢筋生成API(二)

news 2026/6/11 10:37:35

2、自由钢筋生成API

创建一条无约束的自由形状钢筋。之后无法对该钢筋添加约束。

public static Rebar CreateFreeForm(Document doc,RebarBarType barType,Element host,IList<IList<Curve>> curves,out RebarFreeFormValidationResult error
)

这个合自由钢筋生成API(一)本质上没有区别，唯一的区别就是参数

IList<CurveLoop> curves 和IList<IList<Curve>> curves的不同。

这个就要看CurveLoop和IList<Curve>的区别。

CurveLoop：曲线循环的集合，通常用于定义建筑模型的几何边界或路径，默认会把首位相连
IList<Curve>：可以定义一个有多个线段组成的整线，比较适合各种形状的钢筋。

此函数的案例如下：

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Structure;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using System;
using System.Collections.Generic;namespace RebarExample.Cmds
{[Transaction(TransactionMode.Manual)][Regeneration(RegenerationOption.Manual)]public class CreateFreeForm3 : IExternalCommand{public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements){try{Document doc = commandData.Application.ActiveUIDocument.Document;if (doc == null)return Result.Failed;//查找到钢筋类型FilteredElementCollector fec = new FilteredElementCollector(doc).OfClass(typeof(RebarBarType));if (fec.GetElementCount() <= 0)return Result.Failed;RebarBarType barType = fec.FirstElement() as RebarBarType;//启动事务using (Transaction tran = new Transaction(doc, "CreateFreeForm2")){Element host = null;Selection sel = commandData.Application.ActiveUIDocument.Selection;try{//选择主体对象Reference hostRef = sel.PickObject(ObjectType.Element, "Select Host");host = doc.GetElement(hostRef.ElementId);if (host == null)return Result.Failed;}catch (Exception e){message = e.Message;return Result.Failed;}tran.Start();this.CreateFreeForm(doc, barType, host);tran.Commit();}return Result.Succeeded;}catch (Exception ex){message = ex.Message;return Result.Failed;}}/// <summary>/// 创建钢筋/// </summary>/// <param name="doc"></param>/// <param name="barType"></param>/// <param name="host"></param>private void CreateFreeForm(Document doc, RebarBarType barType, Element host){IList<IList<Curve>> curves = new List<IList<Curve>>();if (host is Wall wall){//创建钢筋var wline = (wall.Location as LocationCurve).Curve;if (wline != null){for (var i = 0; i < 5; i++){List<Curve> ps = new List<Curve>();var start = wline.GetEndPoint(0);var end = wline.GetEndPoint(1);var v1 = new XYZ(start.X+0.5, start.Y, start.Z + i * 0.1);var v2 = new XYZ(end.X-0.5, end.Y, end.Z + i * 0.1);Curve l1 = Line.CreateBound(v1, v2);var v3 = new XYZ(end.X-0.5, end.Y + 0.5, end.Z + i * 0.1);Curve l2 = Line.CreateBound(v2, v3);ps.Add(l1);ps.Add(l2);curves.Add(ps);}}}RebarFreeFormValidationResult error;Rebar rebar = Rebar.CreateFreeForm(doc, barType, host, curves, out error);}}
}