133 lines
4.2 KiB
C++
133 lines
4.2 KiB
C++
/* OpenSceneGraph example, osgterrain.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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#include <osgDB/ReadFile>
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#include <osgGA/TrackballManipulator>
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#include <osgUtil/IncrementalCompileOperation>
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struct CustomCompileCompletedCallback : public osgUtil::IncrementalCompileOperation::CompileCompletedCallback
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{
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CustomCompileCompletedCallback():
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completed(false) {}
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virtual bool compileCompleted(osgUtil::IncrementalCompileOperation::CompileSet* compileSet)
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{
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OSG_NOTICE<<"compileCompleted"<<std::endl;
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completed = true;
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return true;
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}
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bool completed;
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};
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int main(int argc, char** argv)
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{
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osg::ArgumentParser arguments(&argc, argv);
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// construct the viewer.
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osgViewer::Viewer viewer(arguments);
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viewer.setCameraManipulator(new osgGA::TrackballManipulator());
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viewer.addEventHandler(new osgViewer::StatsHandler());
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viewer.addEventHandler(new osgViewer::WindowSizeHandler);
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osg::ref_ptr<osgUtil::IncrementalCompileOperation> incrementalCompile = new osgUtil::IncrementalCompileOperation;
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viewer.setIncrementalCompileOperation(incrementalCompile.get());
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double timeBetweenMerges = 2.0;
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while(arguments.read("--interval",timeBetweenMerges)) {}
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typedef std::vector< osg::ref_ptr<osg::Node> > Models;
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Models models;
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for(int pos=1;pos<arguments.argc();++pos)
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{
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if (!arguments.isOption(pos))
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{
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// not an option so assume string is a filename.
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osg::Node *node = osgDB::readNodeFile( arguments[pos]);
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if(node)
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{
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if (node->getName().empty()) node->setName( arguments[pos] );
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models.push_back(node);
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}
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}
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}
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OSG_NOTICE<<"models.size()="<<models.size()<<std::endl;
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osg::ref_ptr<osg::Group> group = new osg::Group;
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unsigned int modelIndex = 0;
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group->addChild(models[modelIndex++].get());
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viewer.setSceneData(group);
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viewer.realize();
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double timeOfLastMerge = viewer.getFrameStamp()->getReferenceTime();
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osg::ref_ptr<CustomCompileCompletedCallback> compileCompletedCallback;
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while(!viewer.done())
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{
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viewer.frame();
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double currentTime = viewer.getFrameStamp()->getReferenceTime();
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if (!compileCompletedCallback &&
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modelIndex<models.size() &&
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(currentTime-timeOfLastMerge)>timeBetweenMerges)
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{
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OSG_NOTICE<<"Compiling model "<<modelIndex<<" at "<<currentTime<<std::endl;
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osg::ref_ptr<osgUtil::IncrementalCompileOperation::CompileSet> compileSet =
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new osgUtil::IncrementalCompileOperation::CompileSet(models[modelIndex].get());
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compileCompletedCallback = new CustomCompileCompletedCallback;
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compileSet->_compileCompletedCallback = compileCompletedCallback;
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incrementalCompile->add(compileSet.get());
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}
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if (compileCompletedCallback.valid() && compileCompletedCallback->completed)
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{
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OSG_NOTICE<<"Merging model "<<modelIndex<<" at "<<currentTime<<std::endl;
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timeOfLastMerge = currentTime;
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compileCompletedCallback = 0;
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group->removeChildren(0,group->getNumChildren());
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group->addChild(models[modelIndex++].get());
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viewer.home();
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}
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}
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return 0;
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}
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