Read COLLADA DAE for XCAF output
Transfer COLLADA DAE meshes into a XCAF workflow with the COLLADA DAE reader and XCAF writer. This route carries polygonal geometry in the receiving document; it does not recreate the original CAD surfaces or feature history.
Read the DAE asset with the Assimp integration and inspect the geometry and scene hierarchy available to the application. Resolve the resources used by the source materials.
Build and store an XCAF document
The Assimp integration provides mesh geometry, colors, materials and scene structure for its supported inputs. Pass that data to a separate OCCT or commercial writer. For STEP, STEP XML or DXF output, use the mesh-capable representation; this does not reconstruct BRep surfaces from polygons.
Place the imported geometry in an XCAF document and map the supported names, colors and structure to its labels. Use the native OCCT document storage appropriate to the selected XBF or XML delivery. Mesh data can remain mesh in the document; creating labels does not generate analytic CAD surfaces.
Check the XCAF result
Check nested transforms, scale and supported appearance. This integration guide covers mesh, colors, materials and structure; it does not imply transfer of every authoring or animation feature of COLLADA.
Reopen the document in the intended OCCT application and verify geometry, occurrence placements and mapped attributes. Keep application-specific additions distinct from source properties. XCAF storage is useful for continuing an OCCT workflow, but the recipient must support the chosen document format.
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.