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Commit df1cb90d authored by Henry Weller's avatar Henry Weller
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rigidBodyDynamics: Simplify handling of quaternions by maintaining a unit...

rigidBodyDynamics: Simplify handling of quaternions by maintaining a unit quaternion in the joint state field 'q'

'w' is now obtained from 'v' using the relation w = sqrt(1 - |sqr(v)|)
and 'v' is stored in the joint state field 'q' and integrated in the
usual manner but corrected using quaternion transformations.
parent 4197cb07
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