Help understanding the element tracking

christian_degn · August 12, 2021, 10:54am

Hello,

I’m working on a workflow to place windows from Rhino / Grasshopper in walls created in Revit. The workflow below works quite well, but the newly introduced element tracking makes the workflow incredibly slow when the project becomes complex.

Can someone explain how the element tracking works, and how I can work with it on complex projects? It seems to me, that the entire file recomputes every time an action is made in Grasshopper. I’m experimenting with projects with 200-300 windows that are scaled in height and width. As a result, Grasshopper is not responding for 5-10 sec. after every action - even if they are not related to the workflow (ex. adding an empty point component).

I have tested the different tracking modes without luck.

Any suggestions, help or insight would be much appreciated!

Best regards,
Christian

RIR_workflow_01.gh (12.3 KB)

kike · August 12, 2021, 4:00pm

Thanks for sharing the gh file.

Let me try.

parametricmonkey1 · August 13, 2021, 6:11am

I’ve noticed that this happens if you have the Revit preview on. As you mention, grasshopper seems to recomputr the whole script when any change is made. Turning off preview somehow fixes it.

christian_degn · August 13, 2021, 7:01am

Hi Paul,

Thank you for your response. I tried turning off preview in Revit and Rhino (very impractical ) It doesn’t seem to work for me, unfortunately. (If I’m doing it right, that is.)

kike · August 13, 2021, 11:04am

@christian_degn,

I tried to populate a Wall with 300 windows and I see the problem.

‘Add Component’ was written with ‘Components’ in mind, that may or may not be hosted like a piece of furniture on a ‘Floor’, but never tested well with doors and windows that modify the host geometry. This operation is slow and need a different approach.

I think we need two new components for Windows and Doors.
By now I improved the current one a bit in v1.1, now if you use ‘Supersede’ mode it should run at decent speed.

It is inserting 300 windows on the same wall randomly in 600ms.
If you enable ‘Reconstruct’ it will try to move those 300 windows to a new position, and this operations is much slower. I guess because of collisions with windows inserted on previous iteration.

christian_degn · August 16, 2021, 2:18pm

@kike

I see, thank you for looking into it. I will test the v1.1 component out when I get the chance.

kike · August 16, 2021, 2:22pm

Hi @christian_degn,

You can switch to “Release Candidates” channel from the Options dialog and test it now if you like.

Keep in mind that files you save with a v1.1 RC may not open on v1.0, so please do backups of your files.

christian_degn · August 16, 2021, 2:32pm

Hi again @kike

Fantastic, I will definitely test it out! It’s interesting to follow the development of RIR, as people seem to use the components for so many different purposes.