Convert IRR to 3DM

The IRR (Irrlicht 3D Scene) file extension is associated with the Irrlicht Engine, an open-source 3D graphics engine written in C++. IRR files store scene graphs in XML format, containing elements such as particle systems, animators, and materials, which Irrlicht references to render game environments. These files may also include links to IRRMESH files for defining scene nodes. The Irrlicht Engine, first released in 2003, gained popularity for its lightweight design and cross-platform compatibility, making it a preferred choice for independent game developers and graphics programmers.

The 3DM file extension, standing for "3D Model", is associated with the openNURBS initiative, which facilitates the exchange of 3D geometry across CAD, CAM, CAE, and computer graphics software. Developed by Robert McNeel & Associates, it serves as the native format for Rhinoceros (Rhino) software. Introduced to address interoperability challenges, 3DM files store precise 3D models using NURBS (Non-Uniform Rational B-Splines) and polygon mesh representations. This format is widely adopted due to its open-source nature, enabling developers to read and write 3DM files without proprietary restrictions, thus promoting seamless data sharing in 3D modeling workflows.