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Help Interaction Obi fluid/cloth - Printable Version

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Interaction Obi fluid/cloth - cliv3dev - 19-02-2025

Hi,

I am testing collision between Fluid and cloth. 
Works fine between ObiCloth and ObiFluid, but when switching to ObiTearableCloth, fluid doesn't collide anymore with Tearable cloth. Do I need extra setup for collision to work ?

thanks,
Diego

RE: Interaction Obi fluid/cloth - josemendez - 19-02-2025

(19-02-2025, 06:47 PM)cliv3dev Wrote: Hi,

I am testing collision between Fluid and cloth. 
Works fine between ObiCloth and ObiFluid, but when switching to ObiTearableCloth, fluid doesn't collide anymore with Tearable cloth. Do I need extra setup for collision to work ?

thanks,
Diego

Hi Diego,

Make sure the collision filters (mask/category) in the emitter and the cloth allow for collision between them, otherwise they’ll ignore each other. For cloth you can set these in the blueprint editor, in a per-particle basis.

Let me know if you need further help,

Kind regards

RE: Interaction Obi fluid/cloth - cliv3dev - 03-03-2025

(19-02-2025, 08:55 PM)josemendez Wrote: Hi Diego,

Make sure the collision filters (mask/category) in the emitter and the cloth allow for collision between them, otherwise they’ll ignore each other. For cloth you can set these in the blueprint editor, in a per-particle basis.

Let me know if you need further help,

Kind regards

Thanks for the quick reply Jose. 
I double checked those parameters but they seem fine. I sent you a sample scene in PM..
thanks,

RE: Interaction Obi fluid/cloth - josemendez - 04-03-2025

(03-03-2025, 04:18 PM)cliv3dev Wrote: Thanks for the quick reply Jose. 
I double checked those parameters but they seem fine. I sent you a sample scene in PM..
thanks,

Hi Diego,

Checked your PM. The reason fluid is largely ignoring your tearable cloth and not regular cloth is because regular cloth is using surface collisions, and tearable cloth is not (since it doesn't support them). So fluid particles are just passing trough the large gaps in between your tearable cloth's particles.

To solve this, make the tearable cloth particles bigger.

kind regards,