OSG简单测试框架

#include <osgDB/ReadFile>
#include <osgDB/FileUtils>

#include <osg/ArgumentParser>
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/StateSetManipulator>

#ifdef _DEBUG
#pragma comment(lib, "osgd.lib")
#pragma comment(lib, "osgDBd.lib")
#pragma comment(lib, "osgViewerd.lib")
#pragma comment(lib, "osgGAd.lib")
#else
#pragma comment(lib, "osg.lib")
#pragma comment(lib, "osgDB.lib")
#pragma comment(lib, "osgViewer.lib")
#pragma comment(lib, "osgGA.lib")
#endif // DEBUG


int main(int argc, char **argv)
{
    // use an ArgumentParser object to manage the program arguments.
    osg::ArgumentParser arguments(&argc, argv);

    // set up the usage document, in case we need to print out how to use this program.
    arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
    arguments.getApplicationUsage()->setDescription(arguments.getApplicationName() + " is an OpenSceneGraph example that shows how to use the accumulation buffer to achieve a simple motion blur effect.");
    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName() + " data path. e.g. D:\\OSG\\Data. 如果此参数为空，则读取当前文件目录下的Data目录");
    arguments.getApplicationUsage()->addCommandLineOption("-h or --help", "Display this information");
    //arguments.getApplicationUsage()->addCommandLineOption("-arg1", "arg1");

    // construct the viewer.
    osgViewer::Viewer viewer;

    // if user request help write it out to cout.
    if (arguments.read("-h") || arguments.read("--help"))
    {
        arguments.getApplicationUsage()->write(std::cout);
        return 1;
    }

    double arg1 = 0.25;
    arguments.read("-arg1", arg1);

    osg::ref_ptr<osg::Group> root = new osg::Group;

    /*// read the scene from the list of file specified command line args.
    osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
    // if not loaded assume no arguments passed in, try use default mode instead.
    if (!loadedModel) loadedModel = osgDB::readNodeFile("cow.osg");
    // if no model has been successfully loaded report failure.
    if (!loadedModel)
    {
        std::cout << arguments.getApplicationName() << ": No data loaded" << std::endl;
        return 1;
    }
    root->addChild(loadedModel);
    */

    std::string dataPath = ".";
    if (argc>1)
    {
        std::cout << argv[1];
        dataPath = argv[1];
    }
    dataPath += "\\Data\\";
    osgDB::DirectoryContents dirNames = osgDB::getDirectoryContents(dataPath);
    for each (std::string dir in dirNames)
    {
        if (dir.find(".") != std::string::npos)
            continue;
        std::string osgbFile = dataPath + dir + "\\"+ dir+".osgb";
        root->addChild(osgDB::readNodeFile(osgbFile));
    }
    // pass the loaded scene graph to the viewer.
    viewer.setSceneData(root.get());

    // add the state manipulator
    viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
    // add the thread model handler
    viewer.addEventHandler(new osgViewer::ThreadingHandler);
    // add the window size toggle handler
    viewer.addEventHandler(new osgViewer::WindowSizeHandler);
    // add the stats handler
    viewer.addEventHandler(new osgViewer::StatsHandler);
    // add the help handler
    viewer.addEventHandler(new osgViewer::HelpHandler(arguments.getApplicationUsage()));
    // add the record camera path handler
    viewer.addEventHandler(new osgViewer::RecordCameraPathHandler);
    // add the LOD Scale handler
    viewer.addEventHandler(new osgViewer::LODScaleHandler);
    // add the screen capture handler
    viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);

    // create the windows and run the threads.
    viewer.realize();

    return viewer.run();
}