Try to calculate the normalized resulting median Vector3D for the angles between each pair of the specified vectors. In the simple case that just two Vector3D are given, a real median is calculated on the plane defined by these two, else an attempt is made to calculate a normalized sum of all the Vector3D. In the latter case, parallel Vector3D having opposite directions may change the expected direction for the resulting median.

Calculate the normalized median Vector3D for the smallest angle between two Vector3D. In the particular case the two vectors are parallel having opposite directions, the median will have the direction of the first vector rotated by counterclockwise 90 degrees.