1 // Copyright (C) 2008 - 2012 Mathias Froehlich - Mathias.Froehlich@web.de
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Library General Public
5 // License as published by the Free Software Foundation; either
6 // version 2 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Library General Public License for more details.
13 // You should have received a copy of the GNU General Public License
14 // along with this program; if not, write to the Free Software
15 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 #ifndef BVHPageNode_hxx
19 #define BVHPageNode_hxx
23 #include <simgear/structure/SGSharedPtr.hxx>
25 #include "BVHGroup.hxx"
26 #include "BVHVisitor.hxx"
33 class BVHPageNode : public BVHGroup {
36 virtual ~BVHPageNode();
38 virtual void accept(BVHVisitor& visitor);
40 /// Return the usage stamp of the last access
41 unsigned getUseStamp() const
44 virtual SGSphered computeBoundingSphere() const = 0;
46 virtual BVHPageRequest* newRequest() = 0;
49 virtual void invalidateBound() = 0;
51 bool getRequested() const
52 { return _requested; }
53 void setRequested(bool requested)
54 { _requested = requested; }
57 friend class BVHPager;
59 std::list<SGSharedPtr<BVHPageNode> >::iterator _iterator;