// If s is immediately adjacent to (shares a border with) us, then add it to the
// appropriate direction list. If s is not "touching" us, then it will not get added to
// any list. s can be added to at most one list (hence use of "else if" instead of just
// a sequence of "if's").
public void AddDirectionTo(SnagScreen s)
{
if ((R.Right == s.R.Left) && OverlapY(R, s.R))
{
ToRight.Add(s);
}
else if ((R.Left == s.R.Right) && OverlapY(R, s.R))
{
ToLeft.Add(s);
}
else if ((R.Top == s.R.Bottom) && OverlapX(R, s.R))
{
Above.Add(s);
}
else if ((R.Bottom == s.R.Top) && OverlapX(R, s.R))
{
Below.Add(s);
}
}
/// <summary>
/// Links both <see cref="Display"/>s if they are adjacent. Does nothing otherwise.
/// Adjacent means that both <see cref="Display"/>s share a border
/// The <see cref="Display"/> passed in will be added to at most one List (<see cref="ToLeft"/>, <see cref="ToRight"/>, <see cref="Above"/>, <see cref="Below"/>)
/// </summary>
/// <param name="display"></param>
public void Link(Display display)
{
if (display == null)
{
throw new ArgumentNullException(nameof(display));
}
if ((Bounds.Right == display.Bounds.Left) && GeometryUtil.OverlapY(Bounds, display.Bounds))
{
ToRight.Add(display);
}
else if ((Bounds.Left == display.Bounds.Right) && GeometryUtil.OverlapY(Bounds, display.Bounds))
{
ToLeft.Add(display);
}
else if ((Bounds.Top == display.Bounds.Bottom) && GeometryUtil.OverlapX(Bounds, display.Bounds))
{
Above.Add(display);
}
else if ((Bounds.Bottom == display.Bounds.Top) && GeometryUtil.OverlapX(Bounds, display.Bounds))
{
Below.Add(display);
}
}