thatopen-core-web-ifc

To parse IFC files and extract geometry, initialize the web-ifc engine by setting the WASM path and calling Init, then use OpenModel to load the IFC buffer and query vertices, indices, and transforms with GetFlatMesh or StreamAllMeshes.

Yes, you can load and coordinate multiple IFC models using web-ifc by opening separate models with OpenModel and applying coordinate alignment options like COORDINATE_TO_ORIGIN for proper multi-model positioning.

The best way to stream large IFC geometry is using the StreamAllMeshes function, which processes meshes iteratively to maintain fine-grained control over the parsing lifecycle and memory management during data extraction.

You can query specific IFC entities and retrieve their properties by using GetLine to fetch individual entity data and the ifcApi.properties helper to access schema-aware type handling for detailed property extraction.

Yes, web-ifc requires WASM setup before parsing IFC data in ThatOpen components; you must call SetWasmPath to locate the WASM binary and execute Init to initialize the engine prior to opening any model.

Direct web-ifc access provides deterministic parsing and precise geometry data control, making it ideal for custom IFC viewers, analytics tools, and research pipelines that require fine-grained lifecycle and memory management.