Read XCAF for OCCT BRep output
A XCAF-to-OCCT BRep workflow connects the XCAF reader to the OCCT BRep writer. Select the model items and output representation needed by the receiving 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.
Store imported geometry as native OCCT shapes
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 imported precise shapes using native OCCT BRep storage. This route is useful for retaining translated geometry for subsequent OCCT modeling and analysis. It requires BRep source geometry and does not recover analytic surfaces from a mesh-only representation.
Check the OCCT BRep result
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.
Read the BRep file back with the intended OCCT delivery and compare shape types, tolerances and geometry coverage. A standalone BRep file does not carry the complete XDE assembly and attribute document; choose XCAF storage when that document-level information must be preserved.
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.