Skin weight fbx export issue

[wine-news]

Hi!

I have a simple object with a simple rig and painted weight. It works fine in C4D. I can move the top of the cone with the proper joint as it's in the top of the picture.
But if I export it to FBX and open C4D or other program like Unreal the weight is messed up.
What do I do wrong?

Thanks!!!

[Dr. Sassi]

Hi wine-news,

Here is my exploration:
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2023_PROJECTS_DRS/20240105_CV4_2024_drs_24_ANfe_01.zip

Would you mind sharing the c4d file here so I can take a look?

All the best

[wine-news]

Hi Dr. Sassi!

Here is my project file.FunnelShape_Skinned.c4d

Thank You

[Dr. Sassi]

Hi wine-news,

Thanks for the file.

The main rule for anything joint-based is that each point on the mesh needs a total of 100.00% Weighting from all Joints. Not more, not less. While some export options limit the number of Joints "working on a point."
Why 100%?
If you move the root and the points have more than 100%, it moves faster; if it has less, it moves slower. When a point has a summary of 100%, all is fine.

In the file from above, only one joint influenced the mesh. At the same time, most points were below 100%.

Please check the file: (Press Play)
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_PROJECTS_DRS/20240106_CV4_2024_drs_24_CAfe_01.zip

Perhaps even export your FBX and reload it to see if it works for you.

Cheers

[wine-news]

I see...Thank You very much!

[Dr. Sassi]

You're very welcome!