07-27-2023, 01:50 PM
The PhysX Fluid operator has buoyancy settings.
This operator works with Phoenix FD and creates two-way interactions between particles and fluid. You'll get the effect you want with particles righting themselves as they float to the top of a fluid surface.
I'm not sure a dedicated non-fluid-based buoyancy operator is really worth the effort, to be honest. Plus you can fake buoyancy in a variety of other ways, if you really need the effect to happen without an accompanying fluid sim (see attached). The basic idea is to move particles up if they're under a surface, and down if they're over it...you can also add surface alignment effects like I do in the example posted.
This operator works with Phoenix FD and creates two-way interactions between particles and fluid. You'll get the effect you want with particles righting themselves as they float to the top of a fluid surface.
I'm not sure a dedicated non-fluid-based buoyancy operator is really worth the effort, to be honest. Plus you can fake buoyancy in a variety of other ways, if you really need the effect to happen without an accompanying fluid sim (see attached). The basic idea is to move particles up if they're under a surface, and down if they're over it...you can also add surface alignment effects like I do in the example posted.