Prepare XCAF geometry for FBX
The XCAF-to-FBX route uses the XCAF reader, mesh preparation and the FBX writer. Choose the geometry and representation required by the destination application.
Read the native XCAF document with the OCCT storage interface matching its file type. Inspect document shapes, assembly occurrences and attributes before selecting the part of the document to exchange.
Prepare mesh geometry for FBX delivery
Choose BRep or mesh geometry according to the actual shapes in the document and the destination. Resolve assembly placements and map supported names and colors. Native document storage can contain application information that another CAD or scene format does not represent.
Write the selected mesh geometry with the commercial FBX interface. Prepare the supported scene and placement mapping required by the receiving application. Check appearance and other attributes individually rather than assuming all source properties have an FBX writer mapping.
Validate the converted model
Check occurrence placement separately from shared part geometry. Validate transferred labels and attributes, and keep the source XCAF document when application-specific data or edit structure needs to be retained.
Reopen the FBX in the destination and compare scale, orientation, geometry coverage and placements. Verify the actual version and property mapping needed by that application. Retain the engineering source for information that the scene derivative cannot carry.
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.