95 lines
2.6 KiB
Plaintext
95 lines
2.6 KiB
Plaintext
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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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
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGDB_IMAGEPAGER
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#define OSGDB_IMAGEPAGER 1
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#include <osg/Image>
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#include <OpenThreads/Thread>
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#include <OpenThreads/Mutex>
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#include <osgDB/ReaderWriter>
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namespace osgDB
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{
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class OSGDB_EXPORT ImagePager : public osg::Referenced
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{
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public:
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ImagePager();
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struct ImageRequest : public osg::Referenced
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{
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ImageRequest():
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osg::Referenced(true) {}
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std::string _fileName;
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osg::ref_ptr<ReaderWriter::Options> _loadOptions;
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osg::ref_ptr<osg::Object> _objectToAttachTo;
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osg::ref_ptr<osg::Image> _loadedImage;
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};
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class OSGDB_EXPORT ImageThread : public osg::Referenced, public OpenThreads::Thread
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{
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public:
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enum Mode
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{
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HANDLE_ALL_REQUESTS,
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HANDLE_NON_HTTP,
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HANDLE_ONLY_HTTP
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};
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ImageThread(ImagePager* pager, Mode mode, const std::string& name);
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ImageThread(const ImageThread& dt, ImagePager* pager);
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void setDone(bool done) { _done = done; }
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bool getDone() const { return _done; }
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virtual int cancel();
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virtual void run();
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protected:
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virtual ~ImageThread();
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bool _done;
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ImagePager* _pager;
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Mode _mode;
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std::string _name;
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};
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/** Return true if there are pending updates to the scene graph that require a call to updateSceneGraph(double). */
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bool requiresUpdateSceneGraph() const;
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/** Merge the changes to the scene graph. */
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virtual void updateSceneGraph(double currentFrameTime);
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public:
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virtual ~ImagePager();
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};
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}
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#endif
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