public void GetVisibleObjects(Camera camera, ICollection <T> collection, ICullTester <T> frustumTester = null)
{
foreach (var item in _items)
{
if (frustumTester != null && frustumTester.Contains(camera, item.BoundingSphere))
{
collection.Add(item);
}
else if (camera.TestFrustum(item.BoundingSphere) != FrustumTest.Outside)
{
collection.Add(item);
}
}
}
public void CullItems(Camera camera, HashSet <T> collection, ICullTester <T> frustumTester)
{
if (_nbElements == 0)
{
return;
}
var check = frustumTester != null?
frustumTester.GetCullState(camera, _boundSphere) :
camera.TestFrustum(_boundSphere);
switch (check)
{
case FrustumTest.Inside:
GetItems(camera, collection, false, frustumTester);
break;
case FrustumTest.Partial:
if (_items != null)
{
foreach (var item in _items)
{
if (!collection.Contains(item) && camera.Contains(item.BoundingSphere))
{
collection.Add(item);
}
}
}
if (_northWest != null && _northWest._nbElements > 0)
{
_northWest.CullItems(camera, collection, frustumTester);
}
if (_northEast != null && _northEast._nbElements > 0)
{
_northEast.CullItems(camera, collection, frustumTester);
}
if (_southWest != null && _southWest._nbElements > 0)
{
_southWest.CullItems(camera, collection, frustumTester);
}
if (_southEast != null && _southEast._nbElements > 0)
{
_southEast.CullItems(camera, collection, frustumTester);
}
break;
}
}
public void GetVisibleObjects(Camera camera, ICollection <T> collection, ICullTester <T> frustumTester = null)
{
if (_root == null)
{
return;
}
_items.Clear();
_root.CullItems(camera, _items, frustumTester);
foreach (var item in _items)
{
collection.Add(item);
}
}
public static bool Contains <T>(this ICullTester <T> tester, Camera camera, Sphere sphere)
{
var cont = tester.GetCullState(camera, sphere);
return(cont == FrustumTest.Inside || cont == FrustumTest.Partial);
}
private void GetItems(Camera camera, HashSet <T> collection, bool partial, ICullTester <T> frustumTester)
{
if (_nbElements == 0)
{
return;
}
if (_items != null)
{
foreach (var item in _items)
{
if (!collection.Contains(item))
{
if (!partial || ((frustumTester != null && frustumTester.Contains(camera, item.BoundingSphere)) || (frustumTester == null && camera.Contains(item.BoundingSphere))))
{
collection.Add(item);
}
}
}
}
if (_northWest != null)
{
_northWest.GetItems(camera, collection, partial, frustumTester);
}
if (_northEast != null)
{
_northEast.GetItems(camera, collection, partial, frustumTester);
}
if (_southWest != null)
{
_southWest.GetItems(camera, collection, partial, frustumTester);
}
if (_southEast != null)
{
_southEast.GetItems(camera, collection, partial, frustumTester);
}
}
