Question

要查找与几何体相交的元素，我将使用Jeremy在其博客http://thebuildingcoder.typepad.com/blog/2010/12/find-intersecting-elements.html中的示例帖子。但是边界框总是与X，Y和Z轴并列，这可能会导致问题，例如返回元素并非真正发生冲突，因为有时边界框并不总是与几何重合，因为旋转了族实例。除此之外，还有一个问题是边界框会考虑符号的几何形状而不是实例，并且也会考虑翻转的几何体，这意味着边界框比我想要的要大。有没有办法获得当前视图中的真实几何？我该如何解决这个问题？

Answer 1

我正在使用另一个策略，该策略访问实例的几何，以验证家庭实体的面部是否与更近的管道发生冲突。

class FindIntersection
{
    public Conduit ConduitRun { get; set; }
    public FamilyInstance Jbox { get; set; }

    public List<Conduit> GetListOfConduits = new List<Conduit>();

    public FindIntersection(FamilyInstance jbox, UIDocument uiDoc)
    {
        XYZ jboxPoint = (jbox.Location as LocationPoint).Point;

        FilteredElementCollector filteredCloserConduits = new FilteredElementCollector(uiDoc.Document);
        List<Element> listOfCloserConduit = filteredCloserConduits.OfClass(typeof(Conduit)).ToList().Where(x =>
        ((x as Conduit).Location as LocationCurve).Curve.GetEndPoint(0).DistanceTo(jboxPoint) < 30 ||
        ((x as Conduit).Location as LocationCurve).Curve.GetEndPoint(1).DistanceTo(jboxPoint) < 30).ToList();
        //getting the location of the box and all conduit around. 

        Options opt = new Options();
        opt.View = uiDoc.ActiveView;

        GeometryElement geoEle = jbox.get_Geometry(opt);
        //getting the geometry of the element to acess the geometry of the instance.

        foreach (GeometryObject geomObje1 in geoEle)
        {

            GeometryElement geoInstance = (geomObje1 as GeometryInstance).GetInstanceGeometry();
            //the geometry of the family instance can be acess by this method that returns a GeometryElement type.
            //so we must get the GeometryObject again to acess the Face of the family instance. 

            if (geoInstance != null)
            {

                foreach (GeometryObject geomObje2 in geoInstance)
                {
                    Solid geoSolid = geomObje2 as Solid;

                    if (geoSolid != null)
                    {

                        foreach (Face face in geoSolid.Faces)
                        {
                            foreach (Element cond in listOfCloserConduit)
                            {
                                Conduit con = cond as Conduit;
                                Curve conCurve = (con.Location as LocationCurve).Curve;
                                SetComparisonResult set = face.Intersect(conCurve);

                                if (set.ToString() == "Overlap")
                                {
                                    //getting the conduit the intersect the box.
                                    GetListOfConduits.Add(con);

                                }
                            }
                        }


                    }
                }
            }
        }
    }
}

Answer 2

您能提供一个complete minimal reproducible case，以便我们了解具体情况并分析可以做些什么吗？也许你可以包括一个轴对齐的接线盒和一个不对的接线盒，因此我们可以看到你的现有算法执行的程度与多么糟糕。谢谢！

Answer 3

我在filtering for intersecting elements and conduits intersecting a junction box的博客文章中总结了此讨论和迄今为止的结果。

边界框交叉口

3 个答案: