def my_parameter_function(biorbd_model: biorbd.Model, value: MX, extra_value: Any):
"""
The pre dynamics function is called right before defining the dynamics of the system. If one wants to
modify the dynamics (e.g. optimize the gravity in this case), then this function is the proper way to do it.
Parameters
----------
biorbd_model: biorbd.Model
The model to modify by the parameters
value: MX
The CasADi variables to modify the model
extra_value: Any
Any parameters required by the user. The name(s) of the extra_value must match those used in parameter.add
"""
value[2] *= extra_value
biorbd_model.setGravity(value)
def my_parameter_function(biorbd_model: biorbd.Model, value: MX,
extra_value: Any):
value[2] *= extra_value
biorbd_model.setGravity(value)