thatopen-agents-viewer-builder

Scaffolding a ThatOpen BIM viewer involves setting up a Vite + TypeScript project, installing proper package versions, configuring web-ifc WASM, and initializing the world scene, renderer, and camera in a deterministic order to enable functional IFC loading and rendering.

COOP and COEP headers are required by web-ifc WASM to achieve cross-origin isolation for multi-threaded WebAssembly execution. This Skill ensures proper Vite WASM handling and header configuration so the BIM viewer can load IFC models without runtime errors.

The correct initialization order requires setting up the world scene, renderer, and camera sequentially, configuring the ifcLoader before any load operations, and finally integrating BUI custom elements for selection and highlighting. This Skill enforces this deterministic sequence.

Yes, ThatOpen components support IFC file loading from file input and click-to-select highlighting. This Skill scaffolds these working BIM interactions out of the box, along with automatic camera fitting after model load and a functional toolbar and panel UI layout.

Common limitations include incorrect package versions, missing COOP/COEP headers for web-ifc WASM, improper Vite WASM handling, and broken BUI initialization order. This Skill prevents these incomplete setups by providing an end-to-end scaffold with correct configuration.