public static Point4d operator -(Point4d p1, Point4d p2)
{
Point4d result = new Point4d();
p1.CopyTo(result);
result.Add(p2);
return(result);
}
/// <summary>
/// Adds a point to this point and stores in result
/// </summary>
/// <param name="point3d"></param>
/// <param name="result"></param>
public void Add(Point4d point4d, Point4d result)
{
this.CopyTo(result);
result.Add(point4d);
}