/// <summary>
/// Retrieves the items that intersect with the given bounds.
/// </summary>
public IEnumerable <T> GetItemsIntersecting(Rect bounds)
{
if (TopRight?.Extent.IntersectsWith(bounds) ?? false)
{
foreach (var item in TopRight.GetItemsIntersecting(bounds))
{
yield return(item);
}
}
if (TopLeft?.Extent.IntersectsWith(bounds) ?? false)
{
foreach (var item in TopLeft.GetItemsIntersecting(bounds))
{
yield return(item);
}
}
if (BottomRight?.Extent.IntersectsWith(bounds) ?? false)
{
foreach (var item in BottomRight.GetItemsIntersecting(bounds))
{
yield return(item);
}
}
if (BottomLeft?.Extent.IntersectsWith(bounds) ?? false)
{
foreach (var item in BottomLeft.GetItemsIntersecting(bounds))
{
yield return(item);
}
}
//add all the items in this quadrant that intersect the given bounds
foreach (var item in ItemsInQuadrant)
{
if (item.Bounds.IntersectsWith(bounds))
{
yield return(item);
}
}
}