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Skin weight fbx export issue

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weight skin partial weight
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  • W
    wine-news last edited by Dr. Sassi Feb 2, 2024, 4:01 AM Jan 5, 2024, 7:46 PM

    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?

    here is the shot

    Thanks!!!

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    • Dr. Sassi
      Dr. Sassi last edited by Jan 6, 2024, 6:03 AM

      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

      Dr. Sassi Sassmannshausen Ph.D.
      Senior Trainer, Maxon Master Trainer, L&D - Strategist
      Cinema 4D mentor since 2004, Member of VES, DCS.

      W 1 Reply Last reply Jan 6, 2024, 8:46 PM Reply Quote
      • W
        wine-news @Dr. Sassi last edited by Jan 6, 2024, 8:46 PM

        Hi Dr. Sassi!

        Here is my project file.FunnelShape_Skinned.c4d

        Thank You

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        • Dr. Sassi
          Dr. Sassi last edited by Dr. Sassi Jan 6, 2024, 10:16 PM Jan 6, 2024, 10:14 PM

          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

          Dr. Sassi Sassmannshausen Ph.D.
          Senior Trainer, Maxon Master Trainer, L&D - Strategist
          Cinema 4D mentor since 2004, Member of VES, DCS.

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          • W
            wine-news last edited by Jan 7, 2024, 8:27 AM

            I see...Thank You very much!

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            • Dr. Sassi
              Dr. Sassi last edited by Feb 2, 2024, 4:00 AM

              You're very welcome!

              Dr. Sassi Sassmannshausen Ph.D.
              Senior Trainer, Maxon Master Trainer, L&D - Strategist
              Cinema 4D mentor since 2004, Member of VES, DCS.

              1 Reply Last reply Reply Quote
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