This method allows users to bind a spec to a model or data object, making it less verbose to access its arrays.
PiperOrigin-RevId: 699952211
Change-Id: I6b71a88d5a6968bc0f902bd49db7c568b46a4dfb
Renamed `mjModel.eq_active` to `mjModel.eq_active0`, which now has the semantic of "initial value of `mjData.eq_active`".
Fixes#876.
PiperOrigin-RevId: 570410643
Change-Id: Id03171e751377c7cc453f143abee64239ee2e2ed
Add missing `ctrl` attribute to keyframe indexer.
END_PUBLIC
Context: Making an LQR notebook for the Skydio drone and wanted to read the ctrl attribute in the keyframe stored in the XML.
PiperOrigin-RevId: 564806350
Change-Id: I5af3189cc8be87915f9d320d95f0fab551ef87fa
Since the introduction of arena memory, these fields now have dynamic sizes that change between time steps depending on the number of active constraints. This breaks strict correspondence between joints and `efc_` rows.
Note that these fields can still be accessed directly as attributes on the `MjData` object.
PiperOrigin-RevId: 508342388
Change-Id: I610ae6ca462f6bb5cf8bc199a3436bed3d1a5371
Alessio Quaglino