topic Re: GET ENVELOPE FORCES BAR VIA API (C#) in Robot Structural Analysis Forum

GET ENVELOPE FORCES BAR VIA API (C#)

eng_leandromartins — Mon, 09 Sep 2024 13:11:51 GMT

Hello everyone,

How do I get the envelope of all combinations from the beginning and end of each bar?

I wrote the code below but it goes through all combinations and all bars. It takes too long.

I saw several examples on the forum, but I didn't quite understand the logic applied.

public List<InternalForces> GetInternalForces() { List<double> FX = new List<double>(); RobotCaseCollection caseCollection = new RobotCaseCollection(); rSelection = RobotApp.Project.Structure.Selections.Create(IRobotObjectType.I_OT_CASE); ForceServer = RobotApp.Project.Structure.Results.Bars.Forces; rSelection.AddText("todos"); caseCollection = RobotApp.Project.Structure.Cases.GetMany(rSelection); if (RobotApp.Project.Structure.Results.Available == -1 ) { for (int i = 0; i < OrdenadesProfiles.Count; i++) { for (int j = 1; j < caseCollection.Count; j++) { if (CaseType == IRobotCaseAnalizeType.I_CAT_COMB || CaseType == IRobotCaseAnalizeType.I_CAT_COMB_CODE || CaseType == IRobotCaseAnalizeType.I_CAT_COMB_NONLINEAR) { robotCase = caseCollection.Get(j); int casNumber = robotCase.Number; DataForce = ForceServer.Value(OrdenadesProfiles[i].Number, casNumber, 0.0); FX.Add(DataForce.FX); DataForce = ForceServer.Value(OrdenadesProfiles[i].Number, casNumber, 1.0); FX.Add(DataForce.FX); } } BarNumber = OrdenadesProfiles[i].Number; FXMax = FX.Max(); FXMin = FX.Min(); } internalForces.Add(new InternalForces(BarNumber,FXMax, FXMin)); } else { MessageBox.Show("Modelo sem Resultados!","AVISO",MessageBoxButtons.OK); } return internalForces; }

Thanks in advance

Re: GET ENVELOPE FORCES BAR VIA API (C#)

Stephane.kapetanovic — Sat, 27 Sep 2025 16:15:40 GMT

HI @eng_leandromartins

you should read this topic (msg 15): (API) Macro for dumping all opened tables in Robot (with all tabs) to Excel

note that you can change IRobotTableDataType.I_TDT_DEFAULT to I_TDT_ENVELOPE in Sub GetBarForcesByTable

static void GetBarForceEnvelopeByTable(string bText, string cText, int n) { var tb = new RobotApplication().Project.ViewMngr.CreateTable(I_TT_FORCES, I_TDT_ENVELOPE); tb.Select(I_ST_BAR, bText); tb.Select(I_ST_CASE, cText); tb.Configuration.SetValue(I_TCV_NUMBER_OF_DIVISION_POINTS, n); string fullPath = Path.Combine(Path.GetTempPath(), "forces.txt"); if (tb.Printable.SaveToFile(fullPath, I_OFF_TEXT)) File.ReadAllLines(fullPath).Skip(1).Select(line => string.Concat(line.Split(';').Select(s => $"{s,-15}"))).ToList().ForEach(WriteLine); tb.Window.SendMessage(0x10, 0, 0); WriteLine("Press any key to continue..."); ReadKey(); }

Best regards

Re: GET ENVELOPE FORCES BAR VIA API (C#)

eng_leandromartins — Mon, 09 Sep 2024 16:54:01 GMT

Thanks for the answer Stephane,

One question, how do I create a List through this?

I don't want to save this information in any file. I want to create a List and get this information in another method.

Re: GET ENVELOPE FORCES BAR VIA API (C#)

Stephane.kapetanovic — Mon, 09 Sep 2024 16:56:34 GMT

Hi @eng_leandromartins

Have you tried the code?
The code does the following:
- creates a table of envelope forces in robot
- exports the table in csv format and closes it
- opens the file and reads it in its entirety
- it displays all the values by column in console mode
With this you have everything you need to create lists, sort and classify your data.
It's not just a file output. this is a normal process.

Why create a list? Which one? What's it for? I can't guess what you want to do.

Best Regards

Re: GET ENVELOPE FORCES BAR VIA API (C#)

eng_leandromartins — Mon, 09 Sep 2024 17:09:13 GMT

Hello,
I tested it, and I realized that the best way to do what I need is to use this file that this method generates and create a list through it.
Sorry for not making it clear what I want to do @Stephane.kapetanovic
I created an app that uses Robot information to create a model within Tekla Structures, and I want to put this force information inside the parts that are created within Tekla, as user information! And the best way to do this is through a list of parts. So I thought about creating a List directly with the Robot information. But as you showed me, the best way is through this file.
Thanks again!!!

Re: GET ENVELOPE FORCES BAR VIA API (C#)

Stephane.kapetanovic — Tue, 10 Sep 2024 06:58:56 GMT

hi @eng_leandromartins

In this case you should add the object IDs of your two models to this list so that you can update your data.

note that you can obtain a list of forces in csv format without using the API.

Best Regards

Re: GET ENVELOPE FORCES BAR VIA API (C#)

eng_leandromartins — Tue, 10 Sep 2024 12:02:50 GMT

Thanks for the tip about the IDs @Stephane.kapetanovic!
Do you have a tutorial on how to create or get these IDs in Robot?

Re: GET ENVELOPE FORCES BAR VIA API (C#)

Stephane.kapetanovic — Tue, 10 Sep 2024 13:35:07 GMT

RobotApplication RobApp = new RobotApplication(); RobotStructure Structure = RobApp.Project.Structure; RobotNodeServer Nodes = Structure.Nodes; RobotBarServer Bars = Structure.Bars; RobotObjObjectServer Objects = Structure.Objects; RobotNode n = (RobotNode)Nodes.Get(1); int Nod_ID = n.UniqueId; RobotBar b = (RobotBar)Bars.Get(1); int Bar_ID = b.UniqueId; RobotObjObject o = (RobotObjObject)Objects.Get(1); int Obj_ID = o.UniqueId; int Nod_Number = Nodes.GetUniqueId(Nod_ID); RobotNode n1 = (RobotNode)Nodes.Get(Nod_Number); int Bar_Number = Bars.GetUniqueId(Bar_ID); RobotBar b1 = (RobotBar)Bars.Get(Bar_Number); int Obj_Number = Objects.GetUniqueId(Obj_ID); RobotObjObject o1 = (RobotObjObject)Objects.Get(Obj_Number);

Re: GET ENVELOPE FORCES BAR VIA API (C#)

eng_leandromartins — Tue, 10 Sep 2024 14:00:59 GMT

Thank's so much!