/**
* <code>toAxes</code> takes in an array of three vectors. Each vector corresponds to an axis of
* the coordinate system defined by the quaternion rotation.
*
* @param axis the array of vectors to be filled.
*/
public void toAxes(Vector3f axis[]) {
Matrix3f tempMat = toRotationMatrix();
axis[0] = tempMat.getColumn(0, axis[0]);
axis[1] = tempMat.getColumn(1, axis[1]);
axis[2] = tempMat.getColumn(2, axis[2]);
}
