* that as the current rotation vector
*/
ao_quaternion_vectors_to_rotation(&ao_rotation, &up, &orient);
* that as the current rotation vector
*/
ao_quaternion_vectors_to_rotation(&ao_rotation, &up, &orient);
rotz = ao_rotation.z * ao_rotation.z - ao_rotation.y * ao_rotation.y - ao_rotation.x * ao_rotation.x + ao_rotation.r * ao_rotation.r;
ao_sample_orient = acosf(rotz) * (float) (180.0/M_PI);
rotz = ao_rotation.z * ao_rotation.z - ao_rotation.y * ao_rotation.y - ao_rotation.x * ao_rotation.x + ao_rotation.r * ao_rotation.r;
ao_sample_orient = acosf(rotz) * (float) (180.0/M_PI);