Convert CSM to 3DM

The CSM (Character Studio Marker) file extension is associated with Autodesk's Character Studio, a component of the 3ds Max software. This file format is used to store 3D character position markers, which are essential for animating biped characters in motion capture data. Introduced in the late 1990s, CSM files are ASCII text files that contain raw marker position data generated by motion-capture devices. These files facilitate the accurate alignment and calibration of character models, ensuring realistic animation sequences. Character Studio Marker files have been instrumental in advancing 3D animation and motion capture technology, providing a standardized format for storing and manipulating character motion data.

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.