Droplets are particles that break away from the main body of liquid in a Bifrost simulation. They have multiple uses, including artistic control, optimizing computation, and reducing simulation artifacts.
There are several reasons to use droplets:
- You can break up splashes and sheets to get a more spray-like effect if desired.
- You can reduce the memory and computational requirements caused by individual particles flying off from the main liquid body. This is because droplets require simpler calculations (that is, ballistic motion instead of liquid dynamics).
- You can reduce problems like bumps and dimples in the liquid surface caused by particles rejoining the main body too soon.
Control droplets
You can control the creation of droplets using Droplet Threshold and Mergeback Depth in the group of the main liquid properties. See Bifrost Emission attributes.
In addition, you can control how particles that have separated from the main body (not just particles that have exceeded the droplet threshold) get meshed using Droplet Radius in the Bifrost Meshing attribute group of the bifrostShape node. See bifrostShape attributes.