How to attach a null to animated polygon selection tag?

[let-fall]

Hello, I converted animated abc file to alembic morph. How can can attach a null to its polygon selection? Can the null follow the pollygon selection surface? Or is there another way to do it?

[Dr. Sassi]

Hi let-fall,

I have no idea what your scene looks like.

Please share a small example file (the forum takes 1MB and c4d files)

All the best

[let-fall]

I shared a scene like same logic. I hope it is ok. I really wonder how can I attached the clock his wrist.
https://we.tl/t-hNmKaQf7NV

[Dr. Sassi]

Hi let-fall,

Thanks for the perfect file.

You asked for a null to be attached; that would be this way:
🔒 Log in to view

With three nulls on three different points, a Target Tag will be stable (Target and Upvector, as well the position: three points)

Perhaps try this option, Projection, and Initialize, after the source object is dragged into the field.
🔒 Log in to view
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2023_PROJECTS_DRS/20231208_CV4_2024_drs_23_ALao_01.c4d.zip
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2023_Clips_DRS/CV4_2024_drs_23_ALao_01.mp4
You need to re-connect the abc files.

If you encounter Priority problems in the final setup, bake it or use Alembic.

All the best

[let-fall]

Hi Dr Sassi, thank you for your reply. But when I add the target tag, it is not stable in my project. There may be an orientation problem. Could you provide one practical example?

[Dr. Sassi]

Hi let-fall,

You're very welcome.

Please have a look here:
CV4_2024_drs_23_XPor_01.c4d

Cheers