(Tessellated shape builder) cylindrical void in geometry issue

[zrodgersTSSSU]

Hey Everyone, I made a script a while ago that took wall geometry and recreated it on the slab for when doing tilt wall layout plans. Looks something like this...

it allows us to easily create layout plans for our total stations. 

but there is an issue when i have a round penetration going though the wall. Like this....

Here is my code:

 foreach (ElementId elemId in selectedIds)
                        {
                            

                            Element elem = uidoc.Document.GetElement(elemId);

                            double wVolume = 0;
                            double wArea = 0;
                            if ((BuiltInCategory)elem.Category.Id.IntegerValue == BuiltInCategory.OST_Walls)
                            {

                                //get wall area and volume
                                wVolume = elem.LookupParameter("Volume").AsDouble();
                                wArea = elem.LookupParameter("Area").AsDouble();

                                Options opts = new Options();
                                opts.ComputeReferences = true;
                                opts.IncludeNonVisibleObjects = false;

                                //geometry element
                                GeometryElement geoEle = elem.get_Geometry(opts);

                                DirectShape ds = null;
                                TessellatedShapeBuilder builder = new TessellatedShapeBuilder();
                                builder.OpenConnectedFaceSet(true);
                                
                                //get wall solids
                                foreach (GeometryObject geomObj in geoEle)
                                {
                                    Solid geomSolid = geomObj as Solid;
                                    if (null != geomSolid && 0 < geomSolid.Faces.Size)
                                    {
                                        int count = geomSolid.Faces.Size;
                                        foreach (Face face in geomSolid.Faces)
                                        {
                                            List<CurveLoop> cL = new List<CurveLoop>();

                                            cL = (List<CurveLoop>)face.GetEdgesAsCurveLoops();
                                            int countCl = cL.Count;
                                            foreach(CurveLoop curveLoop in cL)
                                            {
                                                List<XYZ> args = new List<XYZ>();
                                                foreach (Curve curve in curveLoop)
                                                {
                                                    XYZ pt = curve.GetEndPoint(0);
                                                    args.Add(pt);
                                                }
                                                builder.AddFace(new TessellatedFace(args, ElementId.InvalidElementId));
                                                args.Clear();
                                            }

                                        }

                                    }
                                }

                                builder.CloseConnectedFaceSet();
                                builder.Build();
                                TessellatedShapeBuilderResult result = builder.GetBuildResult();

                                //create direct shape
                                ds = DirectShape.CreateElement(doc, new ElementId(BuiltInCategory.OST_Walls));
                                ds.ApplicationId = "Application id";
                                ds.ApplicationDataId = "Geometry object id";
                                ds.SetShape(result.GetGeometricalObjects());

any idea how i can make this work with a cylindrical penetration?

heres the error im getting.

[zrodgersTSSSU · Accepted solution]

I actually figured this out but not through the api. I modified the family so that it used a sweep of a rectangular profile.

then set the trajectory segmentation to 10 degrees.

this lets the tessellated shape builder create its faces without error. 

but... if someone knows how to fix this issue through the api please let me know.

[AGGilliam]

I'm assuming the cylinder was originally created by extruding a circle? In that case, the circular face would only have 2 points (2 connected curves) which isn't enough to create a tessellated face. The only workaround I could think of, other than what you've already done, would be to check for when args.Count is 2 and calculate the other various points you want to use for the face then pass that list of points instead. More of an idea than a guaranteed fix really. Although, your solution seems to be working perfectly.