Convert X to 3DM

The DirectX Model File, denoted as X, is a file format used primarily for storing 3D models, animations, and other graphical data. Introduced with DirectX 2.0, it supports both text and binary formats, allowing for efficient representation of complex 3D geometry and associated data. This format is extensively utilized by the Direct3D API for rendering graphics in applications and games. Its template-driven structure enables flexibility and extensibility in defining various graphical elements.

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.