topic Re: Select specific node by API in Robot Structural Analysis Forum

Select specific node by API

Anonymous — Thu, 08 Oct 2020 06:33:10 GMT

Hi everyone,

In a simple structure I need select a node by API, in order to get the efforts and checking the connection.

This node is the number 57 which is the joint for 14 and 15 beams.

The other nodes are force nodes.

I have a label for code parameters of the beams, and in addition all of the beams in the frame are grouped in a Superbar.

I understand the labels helps to find the bars, but i dont know how get only this specific node for the connection between two bars.

Thanks in advance.

Re: Select specific node by API

Rafal.Gaweda — Thu, 08 Oct 2020 09:39:44 GMT

Hi @Anonymous

I am not sure if I understood Your task.

My understanding is that this is start or end node of these bars. If not, You have to use Bar.Elements...

Re: Select specific node by API

Anonymous — Thu, 08 Oct 2020 10:23:07 GMT

Hi @Rafal.Gaweda ,

Thanks for your comments.

Yes, this node is the joint between end node of left bar and the start node of right bar.

Thanks a lot.

Re: Select specific node by API

Rafal.Gaweda — Thu, 08 Oct 2020 11:05:33 GMT

Hi @Anonymous

?????

Is 57 node phisical start \ end node of these bars?

If yes - use start \ end node

If no - use Bar.Elements...

Something like that

RobotNodeServer RNS = robApp.Project.Structure.Nodes; for (int k = 1; k <= Bar.Elements.Count; k++) { Int32 CalcStartNode = Bar.Elements.Get(k).StartNode; Int32 CalcEndNode = Bar.Elements.Get(k).EndNode; RobotNode SN = (RobotNode)RNS.Get(CalcStartNode); RobotNode EN = (RobotNode)RNS.Get(CalcEndNode); ..... }

If something different - post Your example model, it will be easier to check what is Your point.

Re: Select specific node by API

Anonymous — Fri, 09 Oct 2020 07:25:32 GMT

Hi @Rafal.Gaweda ,

Finally with your feedback I did it.

it's easier than it seemed, the wanted nodes only have two consecutive bars connected, so with "GetConnectedBars(bar.EndNode)" the issue is resolved:

Dim RType As RobotSelection
Set RType = RobApp.Project.Structure.Selections.CreateByLabel(I_OT_BAR, I_LT_MEMBER_TYPE, "MyBar")
Dim AllBars As RobotBarCollection
Set AllBars = RobApp.Project.Structure.Bars.GetMany(RType)
Dim bar As RobotBar
Dim barrTubes As RobotNumbersArray
Dim found As Boolean

For i = 1 To AllBars.Count
Set bar = AllBars.Get(i)
Set barrTubes = RobApp.Project.Structure.Nodes.GetConnectedBars(bar.EndNode)
If barrTubes.Count = 2 Then
found = True 'FOUND!!!!
' 'save the bars with this node
End If
Next i

Thanks for your time!