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Collider not making a splash

9 REPLIES 9
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Message 1 of 10
midda315
210 Views, 9 Replies

Collider not making a splash

Hi Everyone!

 

I'm really new at this. I've worked with bifrost/collider before and could make a nice splash when the collision happens, but for some reason it's not working and I can't figure out what I clicked/unclicked. I followed this tutorial (https://www.youtube.com/watch?v=GwIX9fzkxQY) then added a few elements, but unfortunately I started this months ago and I'm only getting back to the file now so I may be forgetting some things. Started with Maya 2022, now using 2023.

 

Thanks in advance!

 

 

9 REPLIES 9
Message 2 of 10
michael_nielsen
in reply to: midda315

Please share a scene file to reproduce the issue if possible.

Cheers,

Michael



Michael Nielsen

Principal Engineer
Message 3 of 10
midda315
in reply to: michael_nielsen

Ah sorry!  Attached 🙂

Message 4 of 10
michael_nielsen
in reply to: midda315

I don't see the attachment, please upload again 🙂

Cheers,

Michael



Michael Nielsen

Principal Engineer
Message 5 of 10
midda315
in reply to: midda315

I'm getting this error when I try to post:

 

"The attachment's scene1_bifrost_liquidcollide.mb content type (application/octet-stream) does not match its file extension and has been removed."

 

 

Message 6 of 10
michael_nielsen
in reply to: midda315

Please try as .ma or .zip.

Cheers,

Michael



Michael Nielsen

Principal Engineer
Message 7 of 10
midda315
in reply to: michael_nielsen

Hopefully works now. 

Message 8 of 10
midda315
in reply to: michael_nielsen

Was the file helpful is providing possible answers to what I'm doing wrong?

Message 9 of 10
michael_nielsen
in reply to: midda315

Sorry for the delay in responding. We're currently looking into it.

Cheers,

Michael



Michael Nielsen

Principal Engineer
Message 10 of 10
syracoj
in reply to: midda315

When your scene file is opened we noticed that on the bifrostLiquidProperties1 node your caches (Liquid, Mesh, Solid) were checked on. If it can't find those caches then you won't see the sim, or, if they are loaded and you try to change something you may not see those changes.

I took your emitter geo and placed it in the path where the collider geo is falling and had the collider geo cut through the emitter geo and it was clear the collision is working. What I think may be happening is the actual animation of your collider object is a bit too "feathery" and doesn't seem to have enough profound animated motion when it contacts the liquid area to really start to agitate the liquid. You could also try and eliminate the motion fields to see if they are affecting the collider result. If they are then you may have to make adjustments to the motion field.

You could also try adjusting the transport and time step adaptivity on the bifrostLiquidPropertiesContainer1 node. Try larger values on the Transport Step Adaptivity slider (don't go over 1.0 values. Perhaps try .5 - .75). You could also increase the min/max on the time step from 1 and 2 to 2 and 4 and set the time step adaptivity to .5 as well. There is a cost however to increasing transport/time steps so be advised. The larger the values, the potentially longer compute times.

Also, is it by design that you have continuous emissions on (on the bifrostEmitterProps1 node)? Anyways, a few things to try. Hope this helps.

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