Constructs the plane with origin=or, uAxis=v1, and vAxis=v2. 

Contract: Vectors v1=pntU-or and v2=pntV-or are non-collinear.

Public Sub New(
    origin As Point3d, 
    u As Vector3d, 
    v As Vector3d
)

public Plane(
    Point3d origin, 
    Vector3d u, 
    Vector3d v
);