topic Re: VBA API Rotation of selected elements in Robot Structural Analysis Forum

VBA API Rotation of selected elements

Anonymous — Sat, 15 May 2021 19:55:59 GMT

Hi there,

I'm looking for the correct API methods in order to replicate through VBA programming these following rotating functions:

Your help is very appreciated helping me finding the right code for rotating with or without copy selected structural elements.

Many thanks,

Re: VBA API Rotation of selected elements

Stephane.kapetanovic — Sun, 28 Sep 2025 00:26:32 GMT

hi @Anonymous

have you watched this following topic https://forums.autodesk.com/t5/robot-structural-analysis-forum/robot-vba-api-structure-rotation/m-p/5348657

Best Regards

Re: VBA API Rotation of selected elements

Anonymous — Sun, 16 May 2021 20:35:21 GMT

Hi @Stephane.kapetanovic ,

thanks for your reply. I indeed read this post already but unfortunately it did not fully solved my problem. However, in the meantime, and after some digging into manuals and online forums I found part of the solution. The only thing that is unclear to me still are the parameters of the SelRotate method.

If I want to make a rotation round the Z-axis, what should the parameters be? And if I copy the element instead of just rotating it, how do I set a selected element number to the rotated element? It seems Robot uses the next available Id.

Thanks

Re: VBA API Rotation of selected elements

Stephane.kapetanovic — Mon, 17 May 2021 04:50:12 GMT

hi @Anonymous ,

you must define two points _p0 and _p1 by their coordinates x, y and z (origin and end of the axis of rotation), the desired angle of rotation, the option of rotation (between the three options listed, flags 0, 1, 2) and specify the number of times the action must be repeated.

IRobotStructureEditTools transformation = robot.Project.Structure.Edit; double _p0x = 0, _p0y = 0, _p0z = 0, _p1x = 0, _p1y = 0, _p1z = 1; double _angle = 50; IRobotTranslateOptions OptionRotation = IRobotTranslateOptions.I_TO_COPY; // IRobotTranslateOptions.I_TO_COPY_WITH_DRAG; // IRobotTranslateOptions.I_TO_MOVE; int _repetitions = 1; transformation.SelRotate(_p0x, _p0y, _p0z, _p1x, _p1y, _p1z, _angle, OptionRotation, _repetitions);

best regards

Re: VBA API Rotation of selected elements

Stephane.kapetanovic — Sun, 28 Sep 2025 00:28:44 GMT

Note that the _angle in degrees of the method need to be converted to radians.
To get a free number from the bar server:

int num = robot.Project.Structure.Bars.FreeNumber;

After the transformation the copied elements remain selected. You will be able to collect their number by a new selection.

Re: VBA API Rotation of selected elements

Anonymous — Mon, 17 May 2021 13:09:22 GMT

Thanks @Stephane.kapetanovic , so there's no way of "imposing" a certain number to a newly created bar after a rotation.

Is there any possibility to modify a bar's number?

Thanks again

Re: VBA API Rotation of selected elements

Stephane.kapetanovic — Sun, 28 Sep 2025 00:29:48 GMT

API - renumbering