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Coral Balloon Clusters

🕑 Added 2024-07-23 16:26:19 +0000 UTC

Comments

ian frederick

Yeah inside the solver you can try putting down a pop drag node in the forces area and that might help. On the vellum cloth constraints or pressure constraints node you might also try playing with the dampening settings to help reduce the jitter

Bruno Suraski

When you say "drag force" that goes inside the solver node?

ian frederick

Hmm, you could try putting a strong drag force into the scene to dampen the movement? also try playing with your substeps number as well as the numbers for bend stiffness and stretch stiffness on your cloth constraints, sometimes if those are too high or too low, they fight to keep a certain shape and end up creating unexpected movement. I don't know if there's a super clear answer, usually for me its just about trying different numbers to create a balanced simulation.

Bruno Suraski

Hi Ian, when my spheres inflate, they constantly swirl around the pinned points. Even taking the pop force out of the equation. Do you know how to stop them from moving after being inflated?

Bruno Suraski

The Vellum parameters are the same, but yours has 500 scattered points, and I am using 600. I also changed the target mesh to a wine bottle instead of your prism. The wine bottle has 25 units instead of your 5. But aren't all of those modifications irrelevant to the calculation? I imagine scattering approximately the same points on a different target mesh won't change much.

ian frederick

Hmm that’s very strange, my simulation ran very quickly using the parameters I outlined in this tutorial. Are you following the tutorial exactly?

Bruno Suraski

Hi Ian, Are there ways to optimize the simulation calculations? On my end, caching to verify every change in Vellum takes ages, at least 30 minutes. I have a laptop with a 4080 RTX. I am curious about your workflow. Do you change one parameter in Vellum and wait that long for every correction you need to check? I know that lowering the sphere resolution will help, but at the same time vellum will show a different result than the final resolution, making this workflow difficult to find the right settings for the "final" sim.

Christopher Murphy

I'm pretty sure the light linking exclusion broke your color input and light contribution. If there was a space between * and ^BG, I believe it would work as expected.