Convert VDA-FS to FBX in your application
3D InterOp is a CAD interoperability SDK that lets your software read VDA-FS files and write FBX, generating the FBX mesh from the geometry it reads, with tessellation settings your application controls.
Spatial does not offer an online converter or a desktop conversion app. 3D InterOp is a component that software vendors embed in their own products.
- Reads VDA-FS · Writes FBX
- Exact geometry → triangle mesh
- C++ / C# APIs
VDA-FS to FBX at a glance
VDA-FS stores exact geometry; FBX stores triangles. The translation is a tessellation, and the settings you choose decide how close the mesh stays to the original.
| VDA-FS (source) | FBX (target) | |
|---|---|---|
| Full name | VDA surface interface | Filmbox |
| Standard / owner | VDA (German automotive industry) | Autodesk |
| File extensions | .vda | .fbx |
| Geometry | Exact curves and surfaces | Triangle mesh |
| Assemblies / structure | No assembly hierarchy | Yes: scene hierarchy |
| 3D InterOp support | Read and write | Read and write |
What's preserved, what changes
Here is what your application can expect to carry across from VDA-FS to FBX.
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Changes
Geometry is tessellatedThe exact VDA-FS B-Rep is replaced by a triangle mesh, generated by 3D InterOp from the exact geometry it reads. Accuracy depends on the tessellation settings your application uses.
Why software vendors add VDA-FS to FBX conversion
Lightweight review
FBX carries tessellated geometry that opens much faster than the full CAD model, so design reviews and digital mockups stay responsive.
Sharing outside engineering
Marketing, training and sales teams rarely have CAD software. A FBX file gives them the shape in a format their tools can open.
Easier handling of large assemblies
Without exact surfaces and feature data, FBX files are easier to transfer and display, even for large assemblies.
Things to check before you ship
- Written FBX versions: FBX 7.7.0.
- Points and wires aren’t written to FBX.
- The FBX writer is available through the UConnect interface only.
- Supported VDA-FS input: VDA-FS 1.0 to 2.0.
- Test tessellation settings on your heaviest parts: finer meshes mean larger files.
- Validate a sample of translated files in the target system your users actually work with.
Working with Spatial was a real milestone for us: Thanks to the powerful 3DInterOp library, we were able to successfully bring our complex CAD-based solutions to the cloud while remaining flexible to meet individual customer requirements. For us, Spatial is not just a technology partner, but a true enabler of our product strategy.
Dr. Arno Michelis, Founder, Simus Systems
Read the Case StudyAbout the formats
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Source format
What is a VDA-FS (.vda) file?
VDA-FS is a neutral surface-exchange format defined by the German automotive association VDA. It stores exact curves and free-form surfaces, and is still found in automotive supply chains.
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Target format
What is an FBX (.fbx) file?
FBX is Autodesk’s format for exchanging 3D scenes between content-creation, game and real-time tools. It stores meshes, materials and the scene hierarchy.
Frequently asked questions
3D InterOp tessellates the geometry it reads from VDA-FS when it writes FBX. Your application sets the tolerances, so it controls the trade-off between accuracy and file size.
No. The FBX writer writes meshes; points and wires from the source aren’t written.
The FBX writer is available through the 3D InterOp UConnect interface.
No. VDA-FS has no PMI, so only the geometry is translated to FBX.
3D InterOp reads VDA-FS 1.0 to 2.0.
3D InterOp writes FBX 7.7.0.
Yes. 3D InterOp reads and writes both formats, so FBX to VDA-FS is supported too.
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Building software that needs to convert VDA-FS to FBX?
3D InterOp is an SDK that lets your application read VDA-FS and write FBX alongside 30+ CAD and BIM formats.