def next(self, acceleration=0.0):
        q = quaternion_slerp(self._qpre, self._qnow, 2.0+acceleration, False)
        self._qpre, self._qnow = self._qnow, q
Continue rotation in direction of last drag.
dataset/ETHPy150Open omangin/multimodal/multimodal/lib/transformations.py/Arcball.next