RATBRAIN specimen model

The articulated body hierarchy is adapted from dm_control.
Copyright 2020 The dm_control Authors. Licensed under the Apache License, Version 2.0.
The full license accompanies this file as LICENSE-dm-control.txt.

Source: https://github.com/google-deepmind/dm_control/tree/3e9cd0bf3ec5141f3c6225e77f3ef99b42df2426/dm_control/locomotion/walkers/assets
Source files: rodent.xml, rodent_walker_skin.skn
Changes: binary skin and XML hierarchy converted to JSON; procedural animation
and interaction controller created for this website. The visible holographic
exterior is a newly authored smooth surface model driven by the original joint transforms.
The original anatomical skin is retained as source data and is not rendered.

The animation is a procedural, interactive interpretation of rodent behavior.
The original asset is an articulated model, not a measured neural connectome.