A WebGL Minecraft world viewer and editor, built with React, Three.js and Zustand.
Rendr began in 2024 as a real-time world viewer. In 2026 it was refreshed with Rendr Studio, an editing UI built around an AI architect flow.
Project write-up: jais.info/projects/rendr-mc
studio.html holds the Studio UI: WorldEdit-style selection, a build log for
the architect, blueprint previews, and a review step that marks up rendered
viewpoints. Three scenarios show the flow end to end. Each one runs from a
timeline in src/studio/scenarios/:
?scene=lighthouse: build a lighthouse and keeper's cottage on a sea cliff?scene=riverside: open a world file, find an existing base, extend it?scene=mountain: carve a hideout into a cliff face
| Opening a world | Carving into a cliff |
|---|---|
 |
 |
The original viewer (index.html) renders chunks with an isometric RTS-style
camera:
- WASD movement, edge scrolling, drag-to-pan, and a gizmo cube for rotation
- Standard blocks, stairs, slabs, fluids and custom models
- A texture atlas packed at runtime
npm install
npm run dev
Then open / for the viewer or /studio.html for the Studio.
See documentation.md for the viewer's architecture, and docs/landscape.md
for related open-source projects.