topic Re: Dynamic block issue with stretch and rotation combination in AutoCAD for Mac Forum

Dynamic block issue with stretch and rotation combination

Anonymous — Wed, 23 Jan 2019 11:45:42 GMT

Hi, I'm having some trouble when combining the stretch in combination with the rotation dynamic elements. As you can see in the screencast its fine if you stretch first then rotate, however, if you rotate then stretch as this falls out of the stretch zone it skewed out of shape. I've attached the block.

Does anyone know how to resolve this?

Thanks

Tom

Re: Dynamic block issue with stretch and rotation combination

maxim_k — Wed, 23 Jan 2019 12:14:47 GMT

Hi Tom,

When you select objects for Rotate action, you need to include Linear parameters and Stretch action to Rotate action selection set.

Plus I noticed that you have the same Rotate action for all Visibility States, this gives unpredictable results when you switch visibility. I'd suggest you to create individual actions for different Visibility states.

Re: Dynamic block issue with stretch and rotation combination

Anonymous — Wed, 23 Jan 2019 12:18:46 GMT

Thanks, Maxim, I see will try that out for the next one.

Re: Dynamic block issue with stretch and rotation combination

Anonymous — Mon, 28 Jan 2019 11:19:54 GMT

Hi @maxim_k

Thanks again for your reply, ive tried this out again but ran into the same issue. I've included the stretch / flip items in the rotation and did the rotation last to make sure of this. (there is no visibility states like in the last block) yet this is still an issue. Can you have a look at where im going wrong?

Thanks

Tom

Re: Dynamic block issue with stretch and rotation combination

maxim_k — Mon, 28 Jan 2019 12:33:58 GMT

Hi Tom,

I recreated Rotation parameter and action (also changed the center of rotation) and looks like it works - see right block in the drawing.

Re: Dynamic block issue with stretch and rotation combination

robert.webster247M7 — Thu, 21 Apr 2022 06:54:30 GMT

Hi.

I am having similar issues, where once i rotate a dynamic block with a linear stretch, the stretch goes off in a skewed direction. I've looked at the solution above, I feel that I already do what has been done in that block.

Could someone take a look at the block and explain where I am going wrong please?

I rotate the upper arm and then try and stretch the boom of the arm and it goes wrong.

thanks

Re: Dynamic block issue with stretch and rotation combination

maxim_k — Thu, 21 Apr 2022 07:51:53 GMT

Hi @robert.webster247M7 ,

Try the following:

- delete stretch action

- delete linear parameter

- select rotation parameter "Angle 1" and check-mark "Chain actions" option in Properties Inspector:

- repeat the same for "Angle 3"

- add Linear Parameter and Stretch Action again

- modify selection sets of both Rotation actions for "Angle 1" and "Angle 3" - add Stretch Action to them

- save block and test it

See attached DWG - you can find modified block in it

Re: Dynamic block issue with stretch and rotation combination

robert.webster247M7 — Thu, 21 Apr 2022 09:54:43 GMT

Thanks Maxim_K.

Your help was fantastic. I tried altering mine as per your instructions, but still didn't work, until I examined your block and realised that I was selecting the stretch & rotate actions. Unselected those and jobs a good un.

thanks again for your time and knowledge. It is much appreciated.

Rob

Re: Dynamic block issue with stretch and rotation combination

tim_crouse — Thu, 20 Mar 2025 06:25:19 GMT

I realize this is an old thread but I wanted to pass on how I correct situations like this, where a control goes out of whack or out of alighnemnt when part of a rotation action.

I basically remove the linear control and rework the block a bit, this typically corrects the situation for me.

Best Regards

-Tim C.

Re: Dynamic block issue with stretch and rotation combination

SBoudreau — Fri, 28 Mar 2025 00:58:11 GMT

Try POLAR STRETCH parameter and action item.

Re: Dynamic block issue with stretch and rotation combination

Karl-Nugent — Fri, 22 Aug 2025 06:01:18 GMT

I have created 2 blocks, on works fine when the base point is set to the outside edge corner.

The second has a different base point. I can stretch then rotate with no issues. but i can not rotate then stretch. as the lines skew.

This is cause problems for me and others of my team.

Any help with it would be appreciated.

Re: Dynamic block issue with stretch and rotation combination

robert.webster247M7 — Fri, 22 Aug 2025 07:50:58 GMT

Hi.
I am not the expert, but it sounds like that you need to include your parameters within your selection set of your action.

Re: Dynamic block issue with stretch and rotation combination

maxim_k — Fri, 22 Aug 2025 09:55:35 GMT

Hi @Karl-Nugent ,

@robert.webster247M7 is absolutely right.

Open block in the Block Editor, right-click on Rotate action and select New Selection Set.

Now select all objects in the drawing area.

Repeat this for all Visibility states.

Re: Dynamic block issue with stretch and rotation combination

Karl-Nugent — Sun, 24 Aug 2025 21:37:45 GMT

Thanks guys. it is working for now. I ended up deleting the rotation parameter and starting that part again, it worked after that.