Solved: Get start and end points coordinates of structural beams

nelsonhp3 · ‎07-10-2019

Hi there,

I want to get the position coordinates of all structural beams with C# code, like I did with Dynamo. But I can't find a way to do this.

Please help!

naveen.kumar.t · ‎07-11-2019

Hi @nelsonhp3 ,

try using the below code

FilteredElementCollector collector = new FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_StructuralFraming).WhereElementIsNotElementType();               

                IList<Curve> curves = new List<Curve>();

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

                foreach (Element e in collector)
                {
                    FamilyInstance beam = e as FamilyInstance;
                    GeometryElement GE = beam.get_Geometry(Op);
                    foreach(GeometryObject Go in GE)
                    {
                        //Get the curve from BEAM GEOMETRY
                        Curve C = Go as Curve;
                        curves.Add(C);
                    }
                }
                foreach(Curve C in curves)
                {
                   if(C!=null)
                   {
                        string startPoint = C.GetEndPoint(0).ToString();
                        string endPoint = C.GetEndPoint(1).ToString();                        
                   }
                }

I hope this helps.

Naveen Kumar T
Developer Technical Services
Autodesk Developer Network

nelsonhp3 · ‎07-16-2019

Hi, thanks for the response!

I made this Stringbuilder to see the results with TaskDialog:

foreach (Curve C in curves)
                {
                    if (C != null)
                    {
                        string startPoint = C.GetEndPoint(0).ToString();
                        string endPoint = C.GetEndPoint(1).ToString();
                        sb2.AppendLine("StartPoint: " + startPoint);
                        sb2.AppendLine("EndPoint: " + endPoint);
                    }
                }
TaskDialog.Show("Beams locations test", sb2.ToString());

And this is the result:

Why is it duplicated?

And there's a way to create a list of all beams and their positions along with other parameters like the next screenshot?

naveen.kumar.t · ‎07-17-2019

Hi @nelsonhp3 ,

I think the beam is made up of more than one curve. To test this after adding curves to the list use TaskDialog to show the number of curves.

That's why you are getting more points and it is not duplicated.

and to answer your second question the simplest way is you can use the below code to get the list of element's parameters and their corresponding values

string s="";
Element e;
FamilyInstance beam = e as FamilyInstance;
                    foreach(Parameter P in beam.Parameters)
                    {
                        switch(P.StorageType)
                        {
                            case StorageType.Double:
                                double value = P.AsDouble();
                                s = s + "\n" + P.Definition.Name + " " + value.ToString();
                                break;

                            case StorageType.ElementId:
                                ElementId value = P.AsElementId();
                                 s = s + "\n" + P.Definition.Name + " " + value.ToString();
                                break;

                            case StorageType.Integer:
                                int value = P.AsInteger();
                                s = s + "\n" + P.Definition.Name + " " + value.ToString();
                                break;

                            case StorageType.String:
                                string value = P.AsValueString();
                                s = s + "\n" + P.Definition.Name + " " + value.ToString();
                                break;
                        }
                    }
TaskDialog.Show("Parameters list", s);

Now TaskDialog.show() will show you the element's parameter name and its corresponding value in a dialog.

I hope this helps.

If this helped solve your problem please mark it as solution, so other users can get this solutions as well

Naveen Kumar T
Developer Technical Services
Autodesk Developer Network

nelsonhp3 · ‎07-17-2019

What am I doing wrong?

I made a modification in the code to test using SelectElement:

using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using System;

namespace TesteIncendio2
{
    [Transaction(TransactionMode.Manual)]

    public class Command : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            UIApplication uiapp = commandData.Application;
            UIDocument uidoc = uiapp.ActiveUIDocument;
            Application app = uiapp.Application;
            Document doc = uidoc.Document;

            FamilyInstance beam = null;

            string s = "";
            try
            {
                Element e = SelectElement(uidoc, doc);
                Element SelectElement(UIDocument Uidoc, Document Doc)
                {
                    Reference reference = Uidoc.Selection.PickObject(ObjectType.Element);
                    Element element = Uidoc.Document.GetElement(reference);
                    return element;
                }
                //Element e;
                beam = e as FamilyInstance;
            }
            catch (Exception ex1) { TaskDialog.Show("Erro 1: ", ex1.ToString()); }

            using (Transaction t = new Transaction(doc, "param"))
            {
                t.Start("param");
                try
                {
                    foreach (Parameter P in beam.Parameters)
                    {
                        switch (P.StorageType)
                        {
                            case StorageType.Double:
                                double valueDouble = P.AsDouble();
                                s = s + "\n" + P.Definition.Name + " " + valueDouble.ToString();
                                break;

                            case StorageType.ElementId:
                                ElementId valueElId = P.AsElementId();
                                s = s + "\n" + P.Definition.Name + " " + valueElId.ToString();
                                break;

                            case StorageType.Integer:
                                int valueInt = P.AsInteger();
                                s = s + "\n" + P.Definition.Name + " " + valueInt.ToString();
                                break;

                            case StorageType.String:
                                string valueStr = P.AsValueString();
                                s = s + "\n" + P.Definition.Name + " " + valueStr.ToString();
                                break;
                        }
                    }
                }
                catch (Exception ex2) { TaskDialog.Show("Erro 2: ", ex2.ToString()); }

                TaskDialog.Show("Parameters list", s);

                t.Commit();
                return Result.Succeeded;
            }
        }
    }
}

A TaskDialog with the Exception shows this:

Then, a TaskDialog with a random number of parameters appears:

What am I doing wrong again?

naveen.kumar.t · ‎07-17-2019

Hi @nelsonhp3 ,

I see no problem in your code.

The taskdialog which appears shows the element's parameters and its value.

So that you can easily see the element' parameter in UI using taskdialog.

Now you know how to get the element's parameters and its position.

So as you said, You can now create a list and add beam's parameters and its positions to the list.

I hope it clarifies

Naveen Kumar T
Developer Technical Services
Autodesk Developer Network

Get start and end points coordinates of structural beams

Get start and end points coordinates of structural beams

Get start and end points coordinates of structural beams

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