Convert OBJ to NMF

Understanding OBJ and NMF file formats

OBJ is a widely used 3D geometry definition file format developed by Wavefront Technologies. It stores 3D models as a collection of vertices, faces, normals, and texture coordinates, making it popular for exchanging 3D assets between different software.

NMF (NetImmerse File) is a proprietary 3D model format used by NetImmerse/Gamebryo engines, commonly found in video games for storing meshes, textures, and scene data. NMF files are less common and are typically used in specific game development pipelines.

How to convert OBJ to NMF

Direct conversion from OBJ to NMF is not widely supported by mainstream 3D modeling software. However, you can use specialized tools or plugins designed for the NetImmerse/Gamebryo engine. The typical workflow involves importing the OBJ file into a 3D modeling application that supports NMF export, or using a dedicated converter.

Recommended software for OBJ to NMF conversion

• 3ds Max with Gamebryo plugin: Autodesk 3ds Max, when equipped with the Gamebryo/NetImmerse plugin, allows you to import OBJ files and export them as NMF. The process is as follows:
  1. Open 3ds Max.
  2. Go to File → Import and select your OBJ file.
  3. After editing or preparing your model, go to File → Export and choose NMF as the export format (requires the Gamebryo plugin).
• NetImmerse/Gamebryo toolset: If you have access to the original NetImmerse or Gamebryo toolset, it may include utilities for importing OBJ files and exporting NMF files.

Tips for successful conversion

• Ensure your OBJ file is clean and free of non-manifold geometry or unsupported features.
• Check that all textures and materials are properly assigned before export.
• Consult the documentation for your Gamebryo plugin or toolset for specific export settings.

Conclusion

Converting OBJ to NMF is a specialized process best handled with 3ds Max and the Gamebryo plugin or the official NetImmerse/Gamebryo toolset. These tools ensure compatibility and preserve model data for use in supported game engines.