Is any of the sample code from Explore advanced rendering with RealityKit2 used to generate the dynamic mesh resource, or the geometry modifier, available as a standalone project?
The dynamic ribbon/spiral sample is not available at this time. However, the seaweed geometry modifier and octopus surface shader sample is available to download here. If you have questions about how to use the mesh resource APIs, feel free to ask more questions here, or sign up for one of our labs tomorrow or Friday.