internal override void OnUpdate(bool forceRebuild, HashSet <T> addedItems, HashSet <T> removedItems, HashSet <T> invalidItems)
{
if (forceRebuild)
{
// Total rebuild. Re-Add all Items.
_edges[0].Clear();
_edges[1].Clear();
_edges[2].Clear();
_itemInfos.Clear();
if (_broadPhase != null)
{
_broadPhase.Clear();
}
if (EnableSelfOverlaps)
{
SelfOverlaps.Clear();
}
foreach (var item in Items)
{
AddItem(item);
}
}
else
{
// Refit - the default case.
// First, remove all old items.
foreach (T removedItem in removedItems)
{
RemoveItem(removedItem);
}
// Second, update all invalid items before we add the new items.
if (invalidItems == null)
{
// Update all items.
foreach (ItemInfo itemInfo in _itemInfos)
{
UpdateItem(itemInfo);
}
}
else
{
// Update items marked as invalid.
foreach (T invalidItem in invalidItems)
{
UpdateItem(invalidItem);
}
}
// Third, add all the new items.
foreach (var addedItem in addedItems)
{
AddItem(addedItem);
}
}
// Update AABB of whole space.
UpdateAabb();
}
