SOFA Mesh Files

[ZHKIB]

Hi,

I’m trying to import multiple geometries (Part 1, Part 2, etc.) from a single mesh file (mymesh.k). I initially thought that tags could be used for this purpose, but it seems they have a different meaning—or perhaps I'm not using them correctly. (I built a key file reader, scanned and grouped the elements (generally beam/edge). I can see the edgeGroups. Yet I cannot assign each group to a certain SOFAnode such as "rail.addObject('MeshTopology', src='@../meshLoaderSleeper',drawEdges=True,tags=1)"

Is there a way to import multiple geometries from the same file, rather than uploading each one individually? This is important because I want to create a system like a mass-spring model (e.g., a beam supported by two springs. Indeed, my focus is on train-track interaction). When I import the parts separately, it seems I need to use constraints to merge duplicate nodes at the support points, which becomes problematic for large geometries.

Any help would be much appreciated.

Best regards,

[bakpaul]

Hello,

Tags are there to enforce some mechanisms, such as filtering for some solvers. Groups are differents and are specific to solvers. And to be honest, I didn't see any use of it in the API, it fells like it is deprecated. The mechanism src=@loader that you are using is very simple, it only bind every data of the component to the source one, given that it has the same name. So no, no simple solution here.

But given the code line you shared, it feels like you are using Python. If so, why even bother using SOFA component to deal with loading of file ? You could do it with your own python class, unrelated to SOFA object and just use the data as input of your topology.

Tell me if this solves your issue ?

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@ZHKIB
Feedback has been given to you by the project reviewers, however we have not received a response from you. Without further news in the coming weeks, this discussion will be automatically closed in order to keep this forum clean and fresh 🌱 Thank you for your understanding

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@ZHKIB
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