Masoud Saadatmand

Hi everyone,

I'm trying to copy some grass (lines) onto the top layer of my Vellum grains simulation. However, the grass blades aren't aligning with the direction of the grains — they always point straight up instead of following the grains' orientation.

Does anyone know how I can make the grass follow the grains' axis properly?





Thanks in advance for your help!

Hi everyone,

I'm looking to simulate Flip-Fluid dynamics around a round shape like a sphere, torus, or similar objects—rather than a flat tank or river.

Does anyone know of a good tutorial or have any tips on achieving this effect?


Here are some examples of links:

https://www.youtube.com/watch?v=GwIX9fzkxQY&t=195s [www.youtube.com]

https://www.youtube.com/watch?v=N4pxuDvSXaM&t=1s [www.youtube.com]


Thanks for helping.

Hi cncverkstad

In your HIP file, you used RBD with whole objects as a single piece. To separate them, I switched it to Bullet, but the simulation is very unstable now and always sink..!
And I don't know what are they white collision proxies in the middle of each geometry!



According to my researches:

- Packed RBDs are more efficient and are the go-to solution when you're dealing with large numbers of objects or large-scale destruction and want to optimize performance.

- Fractured RBDs are more suitable when you need individual control over each fractured piece or if the number of fractured objects is relatively small and you need to manage them individually for specific behaviors.