Switch between top-down and 3D views

View the whole building from above, choose a north-up or rotated view, then return to 3D.

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How it works

Developer integration

An integration can open a saved overview using a BCF camera instead of implementing its own navigation controls. The downward orthographic cameras enable 2D panning, with north-up and 30° orientations. A perspective camera restores 3D navigation. These are whole-model views without floor cuts. The page writes camera data with bcf.save(), imports it with viewer.add() and applies it with viewer.selectTopic().

Copy this folder and serve it over HTTP, for example python -m http.server 8080. Open http://localhost:8080/; the SDK and sample downloads require internet access.

The page opens the original source bytes with await viewer.IfcAPI, reads native model data, then closes the model and disposes WASM before displaying the source with viewer.add(). See the complete web-ifc API reference.

Model source and license

BIM Whale Advanced Project. Copyright (c) 2020 André "MG" Wisén. Original IFC at the pinned revision · MIT License. The original IFC2x3 file is imported unchanged.