Collider Builder

Built by Ian Curtis who works on the Product team at World Labs, Collider Builder is a browser-based tool for creating collision geometry directly inside Gaussian splat scenes.

Walk around and explore an example scene here.

The Tool

The project was designed to make splat environments easier to use in interactive workflows without relying on heavy DCC pipelines or external modeling tools.

• Load .spz or .rad splat scenes
• Draw box, sphere, and cylinder colliders in-browser
• Export collision geometry as .glb files

The result is a lightweight workflow for preparing splat scenes for realtime engines, physics systems, and interactive experiences.

How It Works

Collider Builder loads Gaussian splat scenes directly in the browser using Spark new LoD system and Three.js. Users can place, transform, and edit collider volumes directly over the splat environment in realtime.

Once complete, the generated collision geometry can be exported as a .glb and integrated into game engines or interactive spatial projects.

Stack

• Marble / splat scenes for environment workflows
• Spark + Three.js for realtime rendering
• TypeScript + Vite for the browser tooling layer
• GLB export tooling for engine integration

What’s Next

• Navigation and interaction systems for splat scenes
• Procedural editing and scene utilities
• Expanded realtime tooling for spatial workflows

Additional demos and source code available through the live demo and GitHub repository.