1 // SceneryPager.hxx -- Interface to OSG database pager
3 // Copyright (C) 2007 Tim Moore timoore@redhat.com
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 #include <simgear/scene/model/SGPagedLOD.hxx>
24 #include <simgear/math/SGMath.hxx>
25 #include "SceneryPager.hxx"
30 using namespace flightgear;
32 SceneryPager::SceneryPager()
34 _pagerRequests.reserve(48);
35 _deleteRequests.reserve(16);
36 setExpiryDelay(120.0);
39 SceneryPager::SceneryPager(const SceneryPager& rhs) :
44 SceneryPager::~SceneryPager()
48 void SceneryPager::requestNodeFile(const std::string& fileName, Group* group,
49 float priority, const FrameStamp* framestamp,
50 ref_ptr<Referenced>& databaseRequest,
51 #if SG_OSG_MIN_VERSION_REQUIRED(2,9,5)
52 const osg::Referenced* options
54 osgDB::ReaderWriter::Options* options
58 simgear::SGPagedLOD *sgplod = dynamic_cast<simgear::SGPagedLOD*>(group);
60 DatabasePager::requestNodeFile(fileName, group, priority, framestamp,
62 sgplod->getReaderWriterOptions());
64 DatabasePager::requestNodeFile(fileName, group, priority, framestamp,
69 void SceneryPager::queueRequest(const std::string& fileName, Group* group,
70 float priority, FrameStamp* frameStamp,
71 ref_ptr<Referenced>& databaseRequest,
72 osgDB::ReaderWriter::Options* options)
74 _pagerRequests.push_back(PagerRequest(fileName, group, priority,
80 void SceneryPager::queueDeleteRequest(osg::ref_ptr<osg::Object>& objptr)
82 _deleteRequests.push_back(objptr);
85 void SceneryPager::signalEndFrame()
88 bool areDeleteRequests = false;
89 bool arePagerRequests = false;
90 if (!_deleteRequests.empty()) {
91 areDeleteRequests = true;
92 OpenThreads::ScopedLock<OpenThreads::Mutex>
93 lock(_fileRequestQueue->_childrenToDeleteListMutex);
94 ObjectList& deleteList = _fileRequestQueue->_childrenToDeleteList;
95 deleteList.insert(deleteList.end(),
96 _deleteRequests.begin(),
97 _deleteRequests.end());
98 _deleteRequests.clear();
100 if (!_pagerRequests.empty()) {
101 arePagerRequests = true;
102 for_each(_pagerRequests.begin(), _pagerRequests.end(),
103 bind2nd(mem_fun_ref(&PagerRequest::doRequest), this));
104 _pagerRequests.clear();
106 if (areDeleteRequests && !arePagerRequests) {
107 _fileRequestQueue->updateBlock();
109 DatabasePager::signalEndFrame();