93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
#include <osg/ArgumentParser>
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#include <osgProducer/Viewer>
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#include <osgShadow/OccluderGeometry>
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#include <osgDB/ReadFile>
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int main(int argc, char** argv)
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{
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// use an ArgumentParser object to manage the program arguments.
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osg::ArgumentParser arguments(&argc, argv);
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// set up the usage document, in case we need to print out how to use this program.
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arguments.getApplicationUsage()->setDescription(arguments.getApplicationName() + " is the example which demonstrates using of GL_ARB_shadow extension implemented in osg::Texture class");
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arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName());
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arguments.getApplicationUsage()->addCommandLineOption("-h or --help", "Display this information");
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arguments.getApplicationUsage()->addCommandLineOption("--with-base-texture", "Adde base texture to shadowed model.");
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arguments.getApplicationUsage()->addCommandLineOption("--no-base-texture", "Adde base texture to shadowed model.");
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// construct the viewer.
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osgProducer::Viewer viewer(arguments);
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// set up the value with sensible default event handlers.
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viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
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// get details on keyboard and mouse bindings used by the viewer.
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viewer.getUsage(*arguments. getApplicationUsage());
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// if user request help write it out to cout.
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if (arguments.read("-h") || arguments.read("--help"))
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{
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arguments.getApplicationUsage()->write(std::cout);
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return 1;
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}
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// any option left unread are converted into errors to write out later.
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arguments.reportRemainingOptionsAsUnrecognized();
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// report any errors if they have occured when parsing the program aguments.
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if (arguments.errors())
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{
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arguments.writeErrorMessages(std::cout);
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return 1;
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}
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osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments);
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if (!model)
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{
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osg::notify(osg::NOTICE)<<"No model loaded, please specify a model to load."<<std::endl;
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return 1;
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}
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osg::ref_ptr<osg::Geode> geode = new osg::Geode;
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osg::ref_ptr<osgShadow::OccluderGeometry> occluder = new osgShadow::OccluderGeometry;
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occluder->computeOccluderGeometry(model.get());
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geode->addDrawable(occluder.get());
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viewer.setSceneData(geode.get());
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// create the windows and run the threads.
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viewer.realize();
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while (!viewer.done())
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{
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// wait for all cull and draw threads to complete.
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viewer.sync();
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// update the scene by traversing it with the the update visitor which will
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// call all node update callbacks and animations.
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viewer.update();
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// fire off the cull and draw traversals of the scene.
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viewer.frame();
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}
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// wait for all cull and draw threads to complete.
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viewer.sync();
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// run a clean up frame to delete all OpenGL objects.
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viewer.cleanup_frame();
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// wait for all the clean up frame to complete.
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viewer.sync();
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return 0;
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}
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