topic Re: New Dimension are not Visible in Revit API Forum

New Dimension are not Visible

Anonymous — Mon, 09 Jul 2018 21:39:49 GMT

Hi Everybody,

I'm actually trying to create a new dimension for a Rebar element.

To sum up I try to do something like the MultiAnnotation Command but without the Tag.

After further research, I found a way to catch the reference of each Rebar of the Rebar Distribution and to put a dimension on it, but the Problem is the following :

The function Create.Newdimension (on the last line of my code) returns me a dimension but at the end of the execution, I can't see this dimension.

                        Options opt = app.Create.NewGeometryOptions();
                        opt.ComputeReferences = true;
                        opt.IncludeNonVisibleObjects = false;
                        opt.View = doc.ActiveView;

                        ReferenceArray referenceArray = new ReferenceArray();
                        List<XYZ> ListPoint = new List<XYZ>();

                        GeometryElement geometryElement = rebar.get_Geometry(opt);

                        foreach (GeometryObject obj in geometryElement)
                        {
                            if (obj is Solid)
                            {
                                Solid solid = obj as Solid;
                                FaceArray faceArray = solid.Faces;

                                // Search the biggest Face Area
                                Face BiggestFace = faceArray.get_Item(0);
                                foreach (Face face in faceArray)
                                {
                                    if (face.Area > BiggestFace.Area)
                                    {
                                        BiggestFace = face;
                                    }
                                }

                                Face fa = BiggestFace;
                                {
                                    if (fa != null)
                                    {
                                        PlanarFace planarFace = fa as PlanarFace;
                                        XYZ point = planarFace.Origin;
                                        Reference refer = planarFace.Reference;

                                        if (refer != null && referenceArray.Size < 3) //I only need the 2 first Rebar Faces of the Rebar distribution
                                        {
                                            referenceArray.Append(refer);
                                            ListPoint.Add(point);
                                        }
                                    }
                                }
                            }
                        }
                        using (Transaction t = new Transaction(doc, "Creation Ligne de cote"))
                        {
                            t.Start();
                            Line line1 = Line.CreateBound(ListPoint[0], ListPoint[1]);
                            Dimension newDimension = doc.Create.NewDimension(doc.ActiveView, line1, referenceArray);
                            t.Commit();
                        }

Does somebody have an Idea why the new Dimensions are not visible?

I already tried many modifications on the code, but I can't find if the Origin of the problem comes from the ReferenceArray or from the dimension ...

Thanks in Advance,

Re: New Dimension are not Visible

jeremytammik — Tue, 10 Jul 2018 07:37:19 GMT

Please refer to this other discussion on fixing a non-visible dimension after copying it from another view:

https://forums.autodesk.com/t5/revit-api-forum/copy-dimensions-from-a-view-to-another/m-p/7226217

Maybe that solution will help in your case as well?

I already suggested this in a previous thread:

https://forums.autodesk.com/t5/revit-api-forum/newdimension-dimension-created-but-not-visible/m-p/6340985

Please always search the forum for existing answers before posting a new question.

Please also let us know how you end up solving your issue.

Thank you!

Cheers,

Jeremy

Re: New Dimension are not Visible

Anonymous — Thu, 12 Jul 2018 20:27:51 GMT

Thanks Jeremy for the other threads.

I read them but I couldn't solve the problem with these different solutions.

During the week I continue to check my code and I found an interesting point which is probably at the origin of the problem.

To obtain the reference of "theBiggestFace" I execute the following code :

Face theBiggestFace;
PlanarFace planarFace = theBiggestFace as PlanarFace;
Reference refer = planarFace.Reference;

With this code I obtain a Reference which ElementReferenceType is "REFERENCE_TYPE_SURFACE", and in my case (with the faces are parallel to the view) the Dimension will only work with "REFERENCE_TYPE_LINEAR".

Do you have an idea of how to obtain a Reference with a type : "Linear" from a Reference with a type : "Surface" ?

It's probably a simple additional line at my existing code, but I couldn't find it by myself ...

Thanks,

Re: New Dimension are not Visible

jeremytammik — Thu, 13 Sep 2018 11:11:50 GMT

Did you succeed in solving this?

Re: New Dimension are not Visible

Anonymous — Fri, 14 Sep 2018 09:59:36 GMT

Yes and No. 😁
I couldn’t properly found the reference line from the face so I do it now from an other way.

I catch now all the geometrics objects from the view (visible and invisible) and then I filter all these elements to find:
- a reference line parallel to the middle axis of the face;
- the closest reference to the middle axis.

It’s a dirty solution, but it works and with a good filtering the performance stay acceptable.

Re: New Dimension are not Visible

jeremytammik — Fri, 14 Sep 2018 11:03:09 GMT

Thank you very much for sharing your interesting approach.

I am glad to hear it works and is sufficiently performant.

I asked, because I cleaned out a bunch of dimensioning issues in my blog post yesterday:

http://thebuildingcoder.typepad.com/blog/2018/09/rebar-wall-centreline-core-and-grid-dimensioning.html

Maybe I should add this idea of yours as well?

Cheers,

Jeremy