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Problem with groups after importing 3D model

hi. I'm pretty new to UE4. When i import an FBX or an obj model to UE4, information of groups and subgroups in the 3D software package lost. I try to change "Combine mesh" flag but this is not very helpful because hierarchy of my object is not limited to main object or low details of building blocks. If i disable "Combine mesh" all of atomic models such as box and spheres import to the engine. It is very difficult to make hierarchy of objects from beginning in the engine.

Is there any way to handle this?

Product Version: UE 4.10
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asked Feb 13 '16 at 07:18 AM in Using UE4

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2 answers: sort voted first

I have found a way to solve this massive re-assembling problem. I can import the asset with "Combine Mesh" is disable. After it i select all objects that imported together and drag to level. The all of objects assembled correctly in the scene. Now i can define a root object to hold them.

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answered Feb 20 '16 at 06:02 AM

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Hi mece1390. I tried it too, no you can't import hierarchy from 3D program to UE. But i found some else fix that

  1. In 3D program create multiple objects like house

  2. Set frozen transform (in Maya "Freeze Transformation") for all objects (translate, rotate, and scale) by 0, with no change position in world. Building and all objects in him have zero transform and you see all correct.

  3. Export this all objects to FBX, in UE turn off "FBX import settings->Combine mesh".

  4. Put all objects of building in level.

  5. Select all objects and in Details menu set location to zero on all axis. After that all objects have position like in 3D program.

I hope this helpful.

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answered Feb 13 '16 at 08:17 AM

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avatar image mece1390 Feb 20 '16 at 05:59 AM

Thanks for your answer. I have test your way before but the results doesn't change. The re-assembling problem is still exists.

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