btScalar getNonDiagonal(const btJacobianEntry &jacB, const btScalar massInvA) const
btScalar getRelativeVelocity(const btVector3 &linvelA, const btVector3 &angvelA, const btVector3 &linvelB, const btVector3 &angvelB)
btScalar getDiagonal() const
btVector3 m_linearJointAxis
static T sum(const btAlignedObjectArray< T > &items)