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.
19 #include <simgear/scene/model/SGPagedLOD.hxx>
20 #include "SceneryPager.hxx"
25 using namespace flightgear;
27 SceneryPager::SceneryPager()
29 _pagerRequests.reserve(48);
30 _deleteRequests.reserve(16);
31 setExpiryDelay(120.0);
34 SceneryPager::SceneryPager(const SceneryPager& rhs) :
39 SceneryPager::~SceneryPager()
43 void SceneryPager::requestNodeFile(const std::string& fileName, Group* group,
44 float priority, const FrameStamp* framestamp,
45 ref_ptr<Referenced>& databaseRequest,
46 #if SG_OSG_MIN_VERSION_REQUIRED(2,9,5)
47 const osg::Referenced* options
49 osgDB::ReaderWriter::Options* options
53 simgear::SGPagedLOD *sgplod = dynamic_cast<simgear::SGPagedLOD*>(group);
55 DatabasePager::requestNodeFile(fileName, group, priority, framestamp,
57 sgplod->getReaderWriterOptions());
59 DatabasePager::requestNodeFile(fileName, group, priority, framestamp,
64 void SceneryPager::queueRequest(const std::string& fileName, Group* group,
65 float priority, FrameStamp* frameStamp,
66 ref_ptr<Referenced>& databaseRequest,
67 osgDB::ReaderWriter::Options* options)
69 _pagerRequests.push_back(PagerRequest(fileName, group, priority,
75 void SceneryPager::queueDeleteRequest(osg::ref_ptr<osg::Object>& objptr)
77 _deleteRequests.push_back(objptr);
80 void SceneryPager::signalEndFrame()
83 bool areDeleteRequests = false;
84 bool arePagerRequests = false;
85 if (!_deleteRequests.empty()) {
86 areDeleteRequests = true;
87 OpenThreads::ScopedLock<OpenThreads::Mutex>
88 lock(_fileRequestQueue->_childrenToDeleteListMutex);
89 ObjectList& deleteList = _fileRequestQueue->_childrenToDeleteList;
90 deleteList.insert(deleteList.end(),
91 _deleteRequests.begin(),
92 _deleteRequests.end());
93 _deleteRequests.clear();
95 if (!_pagerRequests.empty()) {
96 arePagerRequests = true;
97 for_each(_pagerRequests.begin(), _pagerRequests.end(),
98 bind2nd(mem_fun_ref(&PagerRequest::doRequest), this));
99 _pagerRequests.clear();
101 if (areDeleteRequests && !arePagerRequests) {
102 _fileRequestQueue->updateBlock();
104 DatabasePager::signalEndFrame();