MPM field diffusion?

ona.petraityte — Sun, 14 Apr 2024 00:28:07 GMT

Hello!

Is it possible to diffuse fields? Particularly the proxy kind.

I'm trying to emulate heat diffusion in temperature-based melting animation, for which I pair MPM fluid simulation with an influence chain. Volumes have smooth_voxel_property node for similar purposes, but simulate_mpm seems to work with fields instead (at least in fluids' case) and sample them directly at particle positions.

Couple options I tried were sampling the field with offset particles for (X, -X, Y, -Y, Z, -Z) and calculating the mean, as well as using geo query get_points_in_radius. But both slowed Maya to a crawl.

So I was wondering if there was there was some other way of smoothing fields?

Thanks in advance!

Re: MPM field diffusion?

sepu6 — Wed, 17 Apr 2024 15:06:20 GMT

If I understand correctly what you want you could emulate something like that as a post process in another solver just by transferring the point data that you need into and accumulating where the pts collide then smoothing out the properties that you want. There is an example in Discord if you want to have a look.

https://discord.com/channels/872260298508222534/876728834504937482/1016754601975890031

topic MPM field diffusion? in Bifrost Forum

MPM field diffusion?

Re: MPM field diffusion?