TerriaMap wraps the powerful TerriaJS engine, but it comes with a pre-built UI that may not suit every project. In this talk, I’ll show how you can completely remove the standard UI in TerriaMap and build a simple custom interface, without touching TerriaJS core code or maintaining a fork.

I’ll walk through how to hook into UserInterface.tsx, connect to the Terria instance, and wire up two minimalist controls: switching between 2D/3D view modes and toggling base maps. The talk will feature a few before-and-after screenshots, as well as a link to a public repository with the full implementation for anyone interested in diving deeper.