I demonstrate the basics of Houdini’s Vellum Grains simulation and a step by step demonstration of attraction weight, clustering Vellum Constraints, Crowd Agent setup, and dynamically activating Vellum Grains.

Vellum Grains colliding with animated RBD Object. Only colliding grains are activated in the simulation to optimize and create less chaotic effect. I then take this scene further by adding an animated Soft Body Vellum Object into the Vellum Grains simulation.