/// <summary>
///
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static Interval3d Union(Interval3d a, Interval3d b)
{
a.X = Intervald.Union(a.X, b.X);
a.Y = Intervald.Union(a.Y, b.Y);
a.Z = Intervald.Union(a.Z, b.Z);
return(a);
}
/// <summary>
///
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static Interval2d Union(Interval2d a, Interval2d b)
{
a.X = Intervald.Union(a.X, b.X);
a.Y = Intervald.Union(a.Y, b.Y);
return(a);
}