Mathias Froehlich
cf1bdcef46
Implement a paging implementation for bounding volume hierarchy nodes. We will need this for hla clients that need ground queries.
61 lines
1.6 KiB
C++
61 lines
1.6 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 BVHPager_hxx
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#define BVHPager_hxx
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#include <simgear/structure/SGSharedPtr.hxx>
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namespace simgear {
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class BVHPageNode;
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class BVHPageRequest;
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class BVHPager {
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public:
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BVHPager();
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~BVHPager();
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/// Starts the pager thread
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bool start();
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/// Stops the pager thread
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void stop();
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/// Use this page node, if loaded make it as used, if not loaded schedule
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void use(BVHPageNode& pageNode);
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/// Call this from the main thread to incorporate the processed page
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/// requests into the bounding volume tree
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void update(unsigned expiry);
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/// The usage stamp to mark usage of BVHPageNodes
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void setUseStamp(unsigned stamp);
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unsigned getUseStamp() const;
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private:
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BVHPager(const BVHPager&);
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BVHPager& operator=(const BVHPager&);
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struct _PrivateData;
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_PrivateData* _privateData;
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};
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}
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#endif
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