“Procedural Petticoats in Shrek 2”

In the CG animated movie Shrek 2, the costume design for Fairy Godmother required us to develop a procedural technique to create ruffled petticoats that are visible at the bottom of her garment. Instead of spending weeks simulating layers and layers of petticoats, we decided to create the geometry procedurally as a post process. With this in mind we simulated her outer garment to create an illusion that many layers of ruffles support the garment from underneath. Once these simulated models were generated, the petticoats were created to fit correctly in place.