Revit二次开发---墙体开洞

C#实现管线与洞口关联功能

最新推荐文章于 2025-09-30 09:20:12 发布

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最新推荐文章于 2025-09-30 09:20:12 发布 · 2.1k 阅读

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此功能要实现管线与构筑物(墙、梁、楼板、天花板、屋顶)交点开洞，并且要把管线与洞口关联起来。

首先是开洞，以墙为例

大致思路：1、得到墙体的水平面

2、得到管线与墙面相交的两点，并计算出中点

3、在中点创建洞口族并执行剪切

private void OpeningHole(Element wall,Curve line)
{
    //得到墙的面
    List<Face> lstFace = Get_ElementFace(wall);
    //得到管线与墙的交点
    List<XYZ> lstIntersection = Get_Intersection(line, lstFace);
    //计算中心点
    XYZ ptIntersection = (lstIntersection[0] + lstIntersection[1]) / 2
    Transaction trans = new Transaction(doc, "opening");
    trans.Start();
    try
    {
        //创建洞口
        FamilyInstance instance = doc.Create.NewFamilyInstance(ptIntersection, fs, StructuralType.NonStructural);
        //执行剪切
        InstanceVoidCutUtils.AddInstanceVoidCut(doc, wall, instance);
        trans.Commit();
    }
    catch
    {
        trans.RollBack();
    }
}

        /// <summary>
        /// 找到宿主的面
        /// </summary>
        public static List<Face> Get_ElementFace(Element element)
        {
            Options opt = new Options();
            opt.ComputeReferences = true;
            opt.DetailLevel = ViewDetailLevel.Fine;
            GeometryElement geometryElement = element.get_Geometry(opt);
            Face normalFace = null;
            List<Face> lstFace = new List<Face>();
            foreach (var go in geometryElement)
            {
                if(go is Solid)
                {
                    Solid solid = go as Solid;
                    if (solid != null && solid.Faces.Size > 0)
                    {
                        foreach (Face face in solid.Faces)
                        {
                            PlanarFace planarFace = face as PlanarFace;
                            if (planarFace != null)
                            {
                                lstFace.Add(face);
                            }
                        }
                    }
                }
                else if(go is GeometryInstance)
                {
                    GeometryInstance gins = goas GeometryInstance;
                    if (gins != null)
                    {
                        GeometryElement ge = gins.GetInstanceGeometry();
                        foreach (GeometryObject go in ge)
                        {