Exported FBX displays no normals in unity

Aspose.3D Product Family
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Can you tell me how to convert geometric information correctly？
tofbx.zip (16.4 KB)

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@verhouse
You need to create normal data manually, example code:

            var normal = PolygonModifier.GenerateNormal(mesh);
            mesh.AddElement(normal);
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I tried what you said, but it didn’t work. I also tried to extract the normal that came with rvt, and it didn’t work.
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This is the best result I have exported so far, but there is always a part of the triangle mesh that is wrong

5

@verhouse
Is it possible to offer us a sample FBX file with the same issue so we can investigate it in our side?

Thanks.

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https://drive.google.com/drive/folders/1CeiBH7oKhcPH-CDLb-mcDp0FAlKh7CP5?usp=drive_link
Of course, I uploaded FBX file and RVT file, thank you for your help

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@verhouse
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): THREEDNET-1513

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

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Thank you, and I will keep testing to find out what the problem is. I have a feeling that it may be related to the Revit method node.GetFacets. I test it. I draw a wall in Revit and I test the values of each Facet. The result is a Facet that contains two triangular faces, I don’t know if it will have anything to do with that, but I want to help you.
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@verhouse

We have recorded your provided information along with the ticket and will surely inform you once some progress is made regarding its resolution. Please spare us some time.

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Thank you very much :rose:

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Now I can successfully generate the triangle mesh. After rearranging the api of Autodesk Rvt, I adjusted the position of mesh and node to successfully generate the triangle mesh. Thank you for your patience to answer the question for me before
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@verhouse
Glad to hear that the issue has been resolved. Feel free to reach out if you have any further questions.