topic Re: tags without Overlapping in Revit API Forum

tags without Overlapping

Anonymous — Mon, 05 Feb 2018 05:34:19 GMT

Hi,

When we do tag all the tags overlap. How do I make adjustment so that they are not cluttered and do not overlap.

Thanks & Regards

Sanjay Pandey

Re: tags without Overlapping

Anonymous — Wed, 28 Feb 2018 08:55:56 GMT

Hi Sanjay,

You can find tags are overlapped or not using geometry but for adjustment you can not ( because client need tags differently according to scenario (Tags adjustment are aesthetic in nature )). But at least you can take a input from user like reference and can move tag there or can define rules according to requirement that help user to accomplish their work faster.

Re: tags without Overlapping

jeremytammik — Wed, 28 Feb 2018 11:17:48 GMT

Not a trivial problem.

As Manish suggests, you can easily determine whether tags overlap.

https://stackoverflow.com/questions/1119451/how-to-tell-if-a-line-intersects-a-polygon-in-c

To determine an alternative arrangement, you will have to move them around until they do not overlap.

Once you have that sorted out, you will possibly not be happy with the result, and the next problem will be how to distribute them nicely.

The last step sound like machine learning to me...

Here is a powerful computational geometry algorithms library:

https://www.cgal.org/

Here is a simpler polygon clipper:

http://angusj.com/delphi/clipper.php

You might want to research what algorithms people use to place labels on maps... they face the same challenge.

Here is a solution that places labels avoiding overlaps using either a greedy or simulated annealing strategy:

https://github.com/d3fc/d3fc-label-layout

Looking forward to seeing how you end up solving this!

Thank you!

Cheers,

Jeremy

Re: tags without Overlapping

jeremytammik — Thu, 01 Mar 2018 17:20:29 GMT

Here is a really cool and performant new tool to check for overlapping rectangles:

https://github.com/mourner/flatbush

Cheers,

Jeremy

Re: tags without Overlapping

FlorisvdG — Mon, 15 Jul 2019 09:45:47 GMT

Very interested in this, did you come up with a solution, or find anything useful?

Re: tags without Overlapping

sivin.sivov — Mon, 23 Mar 2020 13:08:12 GMT

+1
Has anyone figured something out? I'm working on a dynamo script but it's a long battle ahead.

Re: tags without Overlapping

bogdan.petrescu63URX — Fri, 29 Jan 2021 07:00:37 GMT

archi-lab boasts with a feature :

https://wrw.is/clean-element-tagging-with-dynamo/

haven't tried it. yet.

Re: tags without Overlapping

jeremy_tammik — Fri, 29 Jan 2021 08:45:35 GMT

Did you also note this recent conversation and solution?

https://forums.autodesk.com/t5/revit-api-forum/auto-tagging-without-overlap/td-p/9996808

Re: tags without Overlapping

sahin.ikbal — Thu, 19 Aug 2021 12:54:55 GMT

As said by Manish "You can find tags are overlapped or not using geometry"

I can not seem to find any geometric object from tags. Can someone suggest what process its referring to?

@Anonymous @jeremy_tammik

Re: tags without Overlapping

aliAANV4 — Sun, 03 Jul 2022 11:59:39 GMT

As suggested by @jeremytammik it's not a trivial problem.

We have developed a solution to this problem using machine learning and AI. Our algorithms leverage fast and parallelizable techniques that we developed for calculating overlaps between rectangles (for tag/tag and tag/object collision detection) and overlaps between lines and rectangles (for leader line/tag/objection collision detection).

Using these algorithms and cloud computing, we calculate the best location for each tag and its leader line to avoid collision with other tags, objects, and their leader lines.

The solution also considers tag alignment as an objective to reach a nice outcome. You can try our method here: https://bimlogiq.com/products/smart-annotataion

Feel free to reach out if you would like to discuss it any further.

Thanks

Ali

Re: tags without Overlapping

FlorisvdG — Mon, 04 Jul 2022 10:04:57 GMT

Now thát is a solution. Amazing stuff!

Re: tags without Overlapping

morrisa1E2UP — Mon, 20 Mar 2023 20:01:49 GMT

Hi Ali!

I have been experimenting with BIMLOGIQ and have noticed there are no Walls under Generic for Wall tags. A specialty equipment section would be great too! I would love to see a feature where we could add our own custom family Tag types to the tag settings.