Generating foam from a liquid

- [Narrator] Foam is an additional Bifrost property…container that adds secondary particles to a…liquid simulation.…It comes with its own shape node,…and the particles can render as a surface or a volume.…I do recommend that you cache the liquid before…creating foam.…You can create them both at the same time,…it's just going to calculate very slowly.…If we go to my current Bifrost liquid properties note…and it's attributes.…If we go into the cache section,…caching, liquid cache.…

We'll see that I have a cache in place from a previous…exercise, the beginning of chapter three,…0301 write cache.…If you haven't done this exercise,…and don't have the cache files on your hard drive,…you want to build the cache of this scene before proceeding.…I've also disabled all of the nodes except for the…primary container nodes and the Bifrost liquid properties.…If we go into any of these others ones,…they've been disabled.…

With those nodes disabled,…we can go ahead and press play in the time controls,…and it may hiccup once it starts loading the cache,…