@brief Get the angular motor mode.
@param mode must be one of the following constants:
\li dAMotorUser The AMotor axes and joint angle settings are entirely
controlled by the user. This is the default mode.
\li dAMotorEuler Euler angles are automatically computed.
The axis a1 is also automatically computed.
The AMotor axes must be set correctly when in this mode,
as described below.
When this mode is initially set the current relative orientations
of the bodies will correspond to all euler angles at zero.
@ingroup joints
@brief Get the angular motor mode. @param mode must be one of the following constants: \li dAMotorUser The AMotor axes and joint angle settings are entirely controlled by the user. This is the default mode. \li dAMotorEuler Euler angles are automatically computed. The axis a1 is also automatically computed. The AMotor axes must be set correctly when in this mode, as described below. When this mode is initially set the current relative orientations of the bodies will correspond to all euler angles at zero. @ingroup joints