Constructor. Constructs the plane satisfying the equation

a*x + b*y + c*z + d = 0

The parameterization of this plane is set in the following way: origin is the closest point on the plane to the point (0,0,0), uAxis= norm.perpVector() and vAxis=norm.crossProduct(uAxis), where the vector norm is vec.normal(). 

Contract: The vector vec with coordinates (a, b, c) must have non-zero length.

Public Sub New(
    a As double, 
    b As double, 
    c As double, 
    d As double
)

public Plane(
    double a, 
    double b, 
    double c, 
    double d
);