How to configure Fbx import settings?

[yuchen-sketch]

Hi all,
I am trying to do something with importing heaps of fbx files coming from maya automatically.
I just read some provieded docs and scripts, and followed the Kaiju example.
However, I just found there is no docs talking about how to set other import settings like 'convert scene', 'combine meshes'.
And I also tried

fbx_factory.ImportUI.bConvertScene = True
fbx_factory.ImportUI.bCombineMeshes = True

which seemed not working.

I am just wondering how I can configure other settings while importing fbx files, and where I can get all api things.

Anyone can help me?

Thanks

[rdeioris]

Hi, the python api maps 1:1 with the C++ one, so you can get the infos from official docs; https://api.unrealengine.com/INT/API/Editor/UnrealEd/Factories/UFbxImportUI/index.html

But honestly that docs are not so handy.

Just print the properties() return value to get the list of related options.

In your case you would end with fbx_factory.ImportUI.StaticMeshImportData.bConvertScene

[yuchen-sketch]

Cool, man.
Thank you so much.

[yuchen-sketch]

Hi, I just tried the StaticMeshImportData.
The good news was that the bCombineMeshes worked.
However, the bConvertScene still not working.

I also tried
fbx_factory.ImportUI.SkeletalMeshImportData.bConvertScene = True
and
fbx_factory.ImportUI.AnimSequenceImportData.bConvertScene = True

the imported model's coordinator was not converted yet.

However, if i do it mannually, check or uncheck the 'convert scene' would affect the result.
Not sure what else I should do for this problem.

[rdeioris]

You need to choose the right *ImportData object based on what you are importing. If you are importing a skeletal mesh you will use SkeletalMeshImportData and so on.

[yuchen-sketch]

from unreal_engine.classes import PyFbxFactory
from unreal_engine.enums import EFBXImportType

fbx_factory = PyFbxFactory()
temp_fbx = r"X:\Temp\HRJ\XL\lantern.fbx"

fbx_factory.ImportUI.MeshTypeToImport = EFBXImportType.FBXIT_StaticMesh
fbx_factory.ImportUI.bCreatePhysicsAsset = False
fbx_factory.ImportUI.bImportMaterials = False
fbx_factory.ImportUI.bImportTextures = False
fbx_factory.ImportUI.bImportAnimations = False
fbx_factory.ImportUI.StaticMeshImportData.bConvertScene = True
fbx_factory.ImportUI.StaticMeshImportData.bCombineMeshes = True

# import the mesh
temp_mesh = fbx_factory.factory_import_object(temp_fbx, `'/Game/Sceneset')``

Here are the codes.
The bConvertScnee keeps not working.
Actually the interesting point is the 'convert scene' parameter in the mesh editor is checked, but the coordinator not change.
Could you pls figure it out if my code has something wrong?
I am new to unreal, and I am doing a test like automatically import fbx files and textures according to a json file so that I can migrate my scene from maya to unreal

Thx

[rdeioris]

Your code is right, but are you sure you do not have z-up already in maya ? 'convert scene' will make a check about the axis data available in the fbx file

[yuchen-sketch]

Nope
I do not think I did the operation.
The fact is that if I imported the fbx manually and check the 'convert scene'parameter, the result would be good.

On the other hand, if I imported it by script, whether i set bConvertScene to True or False, the result was just same as I imported it manually and unchecked 'convert scene'

[yuchen-sketch]

All right,
I tested the script with 4.19 and it worked.
It seems that the issue is a bug with 4.20.1.

[rdeioris]

I have made a little modification to latest code. Can you try it ?

[yuchen-sketch]

Yes, no problem.
Where can I get the modified code?

[rdeioris]

Just clone the master branch

[yuchen-sketch]

Okay, after I finish the texture part and shader part with my code.

[yuchen-sketch]

Hey Bro,
I just test with the new code in 4.20. The 'convert scene' works now!!

I got another question: I couldn't find 'set_material_static_switch_parameter' method with material instance. However , I found there was a pull request about it.
Not sure why your code not including the function. I just added it according to the pull request while compiling. I am just wondering if there are any issues with this function?

[yuchen-sketch]

One more question:

If I created a material instance with
MaterialInstanceConstantFactoryNew().factory_create_new( '/Game/Content/Materials/ExampleA' )
The instance actually would be created as '/Game/Content/Materials/ExampleA/ExampleA.ExampleA'.

How can I create a instance with other name rather than 'ExampleA.ExampleA' (but in the path of '/Game/Content/Materials/ExampleA/')?

[rdeioris]

Hi, you can use asset renaming: https://github.com/20tab/UnrealEnginePython/blob/master/docs/ManagingAssets.md#movingrenaming-assets