def getPlaneNormal(v0, v1, v2):
    """Get the normal vector of a plane (Defined by 3 positions).

    Arguments:
        v0 (vector): First position on the plane.
        v1 (vector): Second position on the plane.
        v2 (vector): Third position on the plane.

    Returns:
        vector: The normal.

    """
    vector0 = v1 - v0
    vector1 = v2 - v0
    vector0.normalize()
    vector1.normalize()

    normal = vector1 ^ vector0
    normal.normalize()

    return normal