Merge pull request #2336 from xela-95:patch-2
PiperOrigin-RevId: 713991183 Change-Id: I0869a068f463513e89fe2f88bca4b82177cfffa3
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@@ -267,7 +267,7 @@ control laws obtained from trajectory optimizers would normally be indexed by ``
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The reason for the "official" caveat above is because user callbacks may store additional state variables that change
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over time and affect the callback outputs; indeed the field ``mjData.userdata`` exists mostly for that purpose. Other
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state-like quantities that are part of mjData and are treated as inputs by forward dynamics are ``mjData.mocap_pos`` and
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mjData.mocap_quat. These quantities are unusual in that they are meant to change at each time step (normally driven by a
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``mjData.mocap_quat``. These quantities are unusual in that they are meant to change at each time step (normally driven by a
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motion capture device), however this change is implemented by the user, while the simulator treats them as constants. In
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that sense they are no different from all the constants in mjModel, or the function callback pointers set by the user:
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such constants affect the computation, but are not part of the state vector of a dynamical system.
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@@ -286,7 +286,7 @@ Next we turn to the controls and applied forces. The control vector in MuJoCo is
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u = (mjData.ctrl, mjData.qfrc_applied, mjData.xfrc_applied)
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These quantities specify control signals (``mjData.ctrl``) for the actuators defined in the model, or directly apply
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forces and torques specified in joint space (``mjData.qfrc_applied``) or in Cartesian space (mjData.xfrc_applied).
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forces and torques specified in joint space (``mjData.qfrc_applied``) or in Cartesian space (``mjData.xfrc_applied``).
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Finally, calling mj_forward which corresponds to the abstract dynamics function ``f(t,x,u)`` computes the
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time-derivative of the state vector. The corresponding fields of mjData are
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