Mathias Froehlich
cf1bdcef46
Implement a paging implementation for bounding volume hierarchy nodes. We will need this for hla clients that need ground queries.
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
// Copyright (C) 2008 - 2012 Mathias Froehlich - Mathias.Froehlich@web.de
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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#ifndef BVHPageNode_hxx
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#define BVHPageNode_hxx
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#include <list>
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#include <simgear/structure/SGSharedPtr.hxx>
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#include "BVHGroup.hxx"
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#include "BVHVisitor.hxx"
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namespace simgear {
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class BVHPager;
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class BVHPageRequest;
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class BVHPageNode : public BVHGroup {
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public:
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BVHPageNode();
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virtual ~BVHPageNode();
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virtual void accept(BVHVisitor& visitor);
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/// Return the usage stamp of the last access
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unsigned getUseStamp() const
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{ return _useStamp; }
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virtual SGSphered computeBoundingSphere() const = 0;
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virtual BVHPageRequest* newRequest() = 0;
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protected:
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virtual void invalidateBound() = 0;
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bool getRequested() const
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{ return _requested; }
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void setRequested(bool requested)
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{ _requested = requested; }
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private:
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friend class BVHPager;
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std::list<SGSharedPtr<BVHPageNode> >::iterator _iterator;
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unsigned _useStamp;
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bool _requested;
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};
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}
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#endif
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