Principle:Google deepmind Mujoco Model Format Detection
| Knowledge Sources | |
|---|---|
| Domains | Model_IO, File_Handling |
| Last Updated | 2026-02-15 06:00 GMT |
Overview
Pattern for determining the format of MuJoCo model files based on file extension to select the appropriate loading or saving strategy.
Description
Model Format Detection identifies file types by their extensions to choose the correct I/O path. MuJoCo supports three file formats: MJCF XML (the native format with full feature support), MJB binary (pre-compiled for fast loading), and TXT (human-readable text dump of model data). The detection must be case-insensitive and handle missing or unknown extensions gracefully.
Usage
Use this pattern when building model conversion tools or any utility that needs to handle multiple model formats. The compile sample demonstrates this for the command-line model compiler.
Theoretical Basis
Format detection is a simple file extension matching algorithm:
# Abstract format detection (not real code)
extension = get_lowercase_extension(filename)
if extension == ".xml" or extension == ".urdf":
return TYPE_XML
elif extension == ".mjb":
return TYPE_MJB
elif extension == ".txt":
return TYPE_TXT
else:
return TYPE_UNKNOWN