Read the Parasolid BRep stored inside JT
A JT file can contain Parasolid BRep as well as visualization meshes. The JT component can read that embedded precise geometry through the Parasolid interface and make it available as OCCT BRep shapes.
This route is useful when the JT visualization is not enough for the next task: CAD modeling, geometric analysis or another precise-geometry exchange. The input must contain Parasolid BRep. A mesh-only JT file has no embedded Parasolid geometry to read.
Distinguish embedded geometry from a Parasolid export
Here, JT-to-Parasolid BRep means accessing and importing the Parasolid content already inside the JT file. The result of this import is OCCT geometry. It does not imply a general-purpose Parasolid writer that creates new X_T or X_B files from arbitrary OCCT shapes.
Select the embedded BRep representation and inspect the imported shapes. Keep the JT document’s placements and supported names and colors associated with the corresponding parts when assembling the application document. Validate the representation of each selected part rather than assuming every part contains both BRep and mesh.
Use the imported BRep in the next operation
The OCCT shapes can be processed directly, stored as native OCCT BRep, or passed to the STEP writer. For USD scenes or STL output, tessellate the imported surfaces at the required deflection.
Check units, part placements, topology and geometry coverage against representative JT files. Keep the original JT when its visualization levels, assembly metadata or other information must remain available alongside the imported precise geometry.