/// <summary>
/// Constructors a plane on a surface by given parameter.
/// </summary>
/// <param name="contextSurface"></param>
/// <param name="u"></param>
/// <param name="v"></param>
/// <returns></returns>
public static Plane AtParameter(Surface contextSurface, double u, double v)
{
CoordinateSystem cs = CoordinateSystem.AtParameterCore(contextSurface, u, v, false);
Plane plane = Plane.FromCoordinateSystem(cs);
plane.Context = contextSurface;
plane.U = u;
plane.V = v;
return(plane);
}