Read glTF / GLB for VRML output
A glTF / GLB-to-VRML workflow connects the glTF / GLB reader to the VRML writer. Select the model items and output representation needed by the receiving application.
Read the glTF or GLB asset with the OCCT glTF interface. Resolve the geometry and companion resources used by the source scene, then inspect nodes, placements and the appearance information available through the reader.
Prepare a VRML visualization derivative
Transfer the scene meshes through the application document, preserving the selected placements. For a CAD container, write a supported mesh representation rather than claiming recovery of analytic surfaces. Treat unsupported scene properties as separate data to retain or author explicitly.
Write the selected mesh representation through the OCCT VRML interface for a consumer that expects WRL or VRML. Map the geometry, placements and supported appearance information required by that viewer. Keep precise CAD topology and unsupported attributes in the engineering source.
Check the VRML result
Check scene scale, axis conventions and repeated objects. Materials, textures and scene behavior may not have an equivalent in the target; compare the required appearance and structure in the receiving application.
Open the output in the receiving VRML application and check scale, orientation and part positions. Verify the actual appearance mapping and any resource references. Compare the tessellation against the viewing task rather than judging fidelity from successful file loading alone.
Discuss this conversion with the producing and receiving applications, representative files and required geometry and attributes. Compare the reader/writer catalog when a different representation is needed.