public Vector2i(Vector2L v)
{
_x = ((int)v.X);
_y = ((int)v.Y);
}
public Vector2(Vector2L v)
{
_x = v.X;
_y = v.Y;
}
public Vector3L(Vector2L xy, long z = 0)
{
_x = xy.X;
_y = xy.Y;
_z = z;
}