I’m building browser-based WebGL terrain editor powered by a custom Three.js engine. It’s a real-time 3D scene, not a static render.

What’s new since the last iteration:

Authoring mode UI integrated into the left navigation (clean tool separation, no ad-hoc overlays)

Camera Mode vs Explore Mode (orbit/zoom author camera with a clear mode switch)

Visual modes for authoring (production parity vs simplified white “workspace” mode)

Live demo: https://playzafiro.com/isle-lab/

Short context: I’m doing this solo. The long-term goal is a lightweight world-building tool that can evolve into a broader editor/workflow.

I’d love feedback on:

- usability (does the navigation/tooling feel intuitive?) - performance on your machine - what feature would make this immediately useful for you (even as a prototype)

Thanks!