/// <summary>
/// DOES NOT WORK. WIP. probably because the additems() doesnt work correctly.
/// </summary>
/// <param name="items"></param>
/// <param name="area"></param>
/// <param name="skipChecks"></param>
public void GetItemsWithinArea(ref List <T> items, ref FRect area, bool skipChecks)
{
if (skipChecks || AABB.Intersects(area))
{
// When the area if entirely within the Cell then skip collision checks on the child nodes
if (area.FullyEncloses(AABB))
{
skipChecks = true;
}
foreach (T item in items)
{
if (skipChecks || item.AABB.Intersects(area))
{
items.Add(item);
}
}
if (!IsLeaf)
{
TopLeft.GetItemsWithinArea(ref items, ref area, skipChecks);
TopRight.GetItemsWithinArea(ref items, ref area, skipChecks);
BottomLeft.GetItemsWithinArea(ref items, ref area, skipChecks);
BottomRight.GetItemsWithinArea(ref items, ref area, skipChecks);
}
}
}
/// <summary>
/// Returns all items (not nodes) that intersect with the given area.
/// </summary>
/// <param name="area"></param>
/// <returns></returns>
public List <T> GetItemsWithinArea(FRect area)
{
List <T> items = new List <T>();
RootNode.GetItemsWithinArea(ref items, ref area, false);
return(items);
}
