← CAD and mesh conversion guides

OCCT conversion workflows

IFC to glTF / GLB

Convert IFC to glTF / GLB through a mesh workflow. Prepare geometry, map supported data and validate the result in the receiving application.

Build this conversion into your application with OCCT readers, writers and the commercial components identified below.

Ask about this workflow
Input interface
OCCT3D IFC reader
Processing route
CAD to mesh
Output interface
OCCT glTF writer

Prepare IFC geometry for glTF / GLB

The IFC-to-glTF / GLB route uses the IFC reader, mesh preparation and the glTF / GLB writer. Choose the geometry and representation required by the destination application.

Read the IFC model through the IFC interface and select the building elements needed by the recipient. Inspect the imported geometry and element placements before preparing a scene or polygonal derivative.

Prepare a scene for glTF or GLB delivery

Use existing meshes or tessellate supported imported BRep surfaces. Keep object placement consistent across the selected building model, and choose mesh detail suitable for the scale and use of the output.

Map supported model items into glTF scene nodes and configure the mesh, placements and appearance for browser or application delivery. Decide whether the receiving workflow expects a GLB package or glTF with companion resources. Keep names useful for selection and inspection.

Validate the converted model

Compare geometry coverage, unit scale and positioning. BIM relationships, classifications and property sets require explicit retention checks; a polygonal file is not a replacement for the complete IFC model.

Reopen the asset in the target viewer and compare orientation, bounds, assembly placement and visible surface quality. Check material mapping and resource paths. Measure loading cost together with geometric detail so that reducing mesh size does not silently remove required features.

For repeated jobs, retain the source, preparation settings and representative output checks. Discuss this conversion with the input files, destination application and required geometry and attributes.

Conversion integration

Build a IFC to glTF / GLB workflow

Share the source and receiving applications, representative files, required attributes and throughput. We can scope SDK evaluation or an integrated conversion service.