Does iModel geometry get preserved when exporting to IFC?

[zhang-zimin]

When exporting an iModel to IFC using the mesh export API, will the geometry information from the iModel be included and saved in the resulting IFC file?

[mathieu-lemuzic]

Hi, there is a small but important distinction to clarify.

The mesh export API does not export iModels to IFC format. Its purpose is to generate mesh-based outputs (3D tiles) for visualization, primarily for use in Cesium, iTwin.js, or similar viewing platforms. As such, it does not produce IFC files at all.

Because of this, the question of whether geometry from the iModel is included in an IFC file does not apply in this context. While the mesh export API does include geometry information, that geometry is baked into mesh tiles for viewing, not translated into IFC entities or schemas.