Prepare PLY geometry for XCAF
The PLY-to-XCAF route uses the PLY reader, mesh preparation and the XCAF writer. Choose the geometry and representation required by the destination application.
Read polygonal PLY through the Assimp import route. The native OCCT catalog lists PLY writing, while Assimp supplies a PLY reader. Check the imported faces and available vertex properties before selecting an output representation.
Assimp lists PLY among its supported inputs. Select a delivery with that reader enabled.
Build and store an XCAF document
Transfer the imported polygonal geometry into the target mesh workflow. A point-only PLY needs a surface-reconstruction step before a surface-mesh export; changing its extension does not create face connectivity.
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.
Validate the converted model
Check face coverage and the property fields required by the recipient. PLY variants can use different properties, so color and other data need validation against the actual reader and writer mapping.
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.
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.