Constraint an object to specific vertex of an other object

[simple-life]

Hi there, Hope you are all doing well.

I'm trying to find a way to constrain an object to a specific vertex of an other object.

For more context :

I have simulated cloth simulation in Marvelous Designer that I exported in alembic.
In C4D, I want to attach some props to the garment.

The PERFECT solution for me would be to be able to attach my props to a specific vertex of the alembic cached object.

If you know any workaround for that I would be so grateful!

Thank you very much.

[Dr. Sassi]

Hi simple-life,

Here are two ways to create this:
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_Clips_DRS/20240223_CV4_2024_drs_24_SImg_01-11.zip

The first one uses the surface deformer to place a tiny polygon, a "mesh matrix," in a cloner.
The other file, "11.c4d", makes the abc file "editable" [c] and allows so access to the point data (yes, you asked about this, and file number one doesn't follow this question).

A single point is insufficient here, so I introduce the Target Tag. With three points, preferably from a single polygon, the position is taken, a target, and an Up vector, which allows a stable orientation.

https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_Clips_DRS/20240223_CV4_2024_drs_24_SImg_01-11.zip

(Perhaps set the XPresso Priority higher, or later in the Object Manager)

Let me know if that works for you.

All the best