source: osgVisual/src/core/visual_core.cpp @ 55

/* -*-c++-*- osgVisual - Copyright (C) 2009-2010 Torben Dannhauer
 *
 * This library is based on OpenSceneGraph, open source and may be redistributed and/or modified under 
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * osgVisual requires for some proprietary modules a license from the correspondig manufacturer.
 * You have to aquire licenses for all used proprietary modules.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * OpenSceneGraph Public License for more details.
*/

#include <visual_core.h>

using namespace osgVisual;

visual_core::visual_core(osg::ArgumentParser& arguments_) : arguments(arguments_)
{
        OSG_NOTIFY( osg::ALWAYS ) << "visual_core instantiated." << std::endl;

        // Setup pathes
        osgDB::Registry::instance()->getDataFilePathList().push_back( "D:\\DA\\osgVisual\\models" );
        
        // Setup viewer
        viewer = new osgViewer::Viewer(arguments);

        // Setup coordinate system node
        rootNode = new osg::CoordinateSystemNode;
        rootNode->setEllipsoidModel(new osg::EllipsoidModel());

        // Test memory leak (todo)
        //double* test = new double[1000];

        #ifdef USE_SPACENAVIGATOR
                mouse = NULL;
        #endif

        //osg::DisplaySettings::instance()->setNumOfDatabaseThreadsHint( 8 );
}

visual_core::~visual_core(void)
{
        // shut osgVisual down
        shutdown();

        OSG_NOTIFY( osg::ALWAYS ) << "visual_core destroyed." << std::endl;

}

void visual_core::initialize()
{
        OSG_NOTIFY( osg::ALWAYS ) << "Initialize visual_core..." << std::endl;

        // Process commandline arguments for configuration parameter
        processCommandlineArguments();
        
        // Add manipulators for user interaction
        addManipulators();

        // Load terrain
        loadTerrain(arguments);

        // Show model
        viewer->setSceneData( rootNode );

#ifdef USE_DISTORTION
        // Initialize distortion
        distortion = new visual_distortion( viewer, arguments );
        distortion->initialize( rootNode, viewer->getCamera()->getClearColor() );
#endif

#ifdef USE_SKY_SILVERLINING
        // Initialize sky
        sky = new visual_skySilverLining( viewer );
        #ifdef USE_DISTORTION
                if ( distortion.valid() )
                {
                        OSG_NOTIFY( osg::ALWAYS ) << "Using sky with distortion." << std::endl;
                        sky->init( distortion->getDistortedSceneGraph(), rootNode);
                }
        #else
                OSG_NOTIFY( osg::ALWAYS ) << "Using Sky without distortion." << std::endl;
                sky->init(rootNode);
        #endif
#endif

        // Initialize DataIO interface
        visual_dataIO::getInstance()->init(viewer, arguments);

        // All modules are initialized - now check arguments for any unused parameter.
        checkCommandlineArgumentsForFinalErrors();

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

        // setup scenery
        setupScenery();

        // Run visual main loop
        mainLoop();
}

void visual_core::mainLoop()
{
        // run main loop
        while( !viewer->done() )
    {
                // next frame please....
        viewer->advance();

                /*double hat, hot, lat, lon, height;
                util::getWGS84ofCamera( viewer->getCamera(), rootNode, lat, lon, height);
                if (util::queryHeightOfTerrain( hot, rootNode, lat, lon) && util::queryHeightAboveTerrainInWGS84( hat, rootNode, lat, lon, height ) )
                        OSG_NOTIFY( osg::ALWAYS ) << "HOT is: " << hot << ", HAT is: " << hat << std::endl;*/
        
                // update the scene by traversing it with the the update visitor which will
        // call all node update callbacks and animations.
        viewer->eventTraversal();
        viewer->updateTraversal();
                
        // Render the Frame.
        viewer->renderingTraversals();

    }   // END WHILE
}

void visual_core::shutdown()
{
        OSG_NOTIFY( osg::ALWAYS ) << "Shutdown visual_core..." << std::endl;

        // Unset scene data
        viewer->setSceneData( NULL );

#ifdef USE_SKY_SILVERLINING
        // Shutdown sky
        if( sky.valid() )
                sky->shutdown();
#endif

#ifdef USE_DISTORTION
        // Shutdown distortion
        if( distortion.valid() )
                distortion->shutdown();
#endif

        // Shutdown dataIO
        visual_dataIO::getInstance()->shutdown();

        
#ifdef USE_SPACENAVIGATOR
        //Delete SpaceMouse driver
        if(mouse)
        {
                mouse->shutdown();
                delete mouse;
        }
#endif
}

bool visual_core::loadTerrain(osg::ArgumentParser& arguments_)
{
        osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments_);
        if( model.valid() )
        {
        rootNode->addChild( model.get() );
                return true;
        }
        else
        {
        OSG_NOTIFY( osg::FATAL ) << arguments_.getApplicationName() <<"Load terrain: No data loaded" << std::endl;
        return false;
    }    

        return false;
}

void visual_core::addManipulators()
{
        // set up the camera manipulators.
    {
        osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;

        keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
        keyswitchManipulator->addMatrixManipulator( '2', "Flight", new osgGA::FlightManipulator() );
        keyswitchManipulator->addMatrixManipulator( '3', "Terrain", new osgGA::TerrainManipulator() );
                nt = new osgGA::NodeTrackerManipulator();
                keyswitchManipulator->addMatrixManipulator( '4', "NodeTrackerManipulator", nt );
                
#ifdef USE_SPACENAVIGATOR
                // SpaceNavigator manipulator
                mouse = new SpaceMouse();
                mouse->initialize();
                mouseTrackerManip = new NodeTrackerSpaceMouse(mouse);
                mouseTrackerManip->setTrackerMode(NodeTrackerSpaceMouse::NODE_CENTER);
                mouseTrackerManip->setRotationMode(NodeTrackerSpaceMouse::ELEVATION_AZIM);
                mouseTrackerManip->setAutoComputeHomePosition( true );
                keyswitchManipulator->addMatrixManipulator( '5', "Spacemouse Node Tracker", mouseTrackerManip );
                keyswitchManipulator->addMatrixManipulator( '6', "Spacemouse Free (Airplane)", new FreeManipulator(mouse) );
#endif

                // objectMounted Manipulator for Camera control by Nodes
                objectMountedCameraManip = new objectMountedManipulator();
                keyswitchManipulator->addMatrixManipulator( '7', "Object mounted Camera", objectMountedCameraManip );

                // Animation path manipulator
        std::string pathfile;
        char keyForAnimationPath = '8';
        while (arguments.read("-p",pathfile))
        {
            osgGA::AnimationPathManipulator* apm = new osgGA::AnimationPathManipulator(pathfile);
            if (apm || !apm->valid()) 
            {
                unsigned int num = keyswitchManipulator->getNumMatrixManipulators();
                keyswitchManipulator->addMatrixManipulator( keyForAnimationPath, "Path", apm );
                keyswitchManipulator->selectMatrixManipulator(num);
                ++keyForAnimationPath;
            }
        }

        viewer->setCameraManipulator( keyswitchManipulator.get() );
    }

    // add the state manipulator
    viewer->addEventHandler( new osgGA::StateSetManipulator(rootNode->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);
}

void visual_core::processCommandlineArguments()
{
        std::cout << "Processing general commandline arguments..." << std::endl;

        // Setup Application Usage
        arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
        arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the new FSD visualization tool, written by Torben Dannhauer");
    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] Terrain_filename");
        arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");

    // if user request help write it out to cout.
    if (arguments.read("-h") || arguments.read("--help"))
    {
        arguments.getApplicationUsage()->write(std::cout);
                //cause the viewer to exit and shut down clean.
        viewer->setDone(true);
    }

    // report any errors if they have occurred when parsing the program arguments.
    if (arguments.errors())
    {
        arguments.writeErrorMessages(std::cout);
                //cause the viewer to exit and shut down clean.
        viewer->setDone(true);
    }
}

bool visual_core::checkCommandlineArgumentsForFinalErrors()
{
         // any option left unread are converted into errors to write out later.
    arguments.reportRemainingOptionsAsUnrecognized();

    // report any errors if they have occurred when parsing the program arguments.
    if (arguments.errors())
    {
        arguments.writeErrorMessages(std::cout);
        return false;
    }
        return true;
}

void visual_core::setupScenery()
{
        //testObj = new visual_object( rootNode, "testStab", objectMountedCameraManip );
        //testObj->setNewPosition( osg::DegreesToRadians(47.7123), osg::DegreesToRadians(12.84088), 600 );
        ///* using a huge cylinder to test position & orientation */
        //testObj->setGeometry( util::getDemoCylinder(5000.0, 20.0 ) );
        //testObj->addUpdater( new object_updater(testObj) );

        osg::ref_ptr<visual_object> testObj2 = new visual_object( rootNode, "cessna" );
        //testObj2->setNewPosition( osg::DegreesToRadians(47.8123), osg::DegreesToRadians(12.94088), 600 );
        testObj2->setNewPosition( osg::DegreesToRadians(50.8123), osg::DegreesToRadians(8.94088), 600 );
        testObj2->loadGeometry( "../models/cessna.osg" );
        testObj2->addUpdater( new object_updater(testObj2) );

        osg::ref_ptr<visual_object> testObj3 = new visual_object( rootNode, "SAENGER1" );
        testObj3->setNewPosition( osg::DegreesToRadians(47.8123), osg::DegreesToRadians(12.94088), 600 );
        testObj3->loadGeometry( "../models/saenger1.flt" );
        testObj3->addUpdater( new object_updater(testObj3) );
        

        osg::ref_ptr<visual_object> testObj4 = new visual_object( rootNode, "SAENGER2" );
        testObj4->setNewPosition( osg::DegreesToRadians(47.8123), osg::DegreesToRadians(12.94088), 650 );
        testObj4->loadGeometry( "../models/saenger2.flt" );
        testObj4->addUpdater( new object_updater(testObj4) );
        testObj4->addLabel("testLabel", "LabelTest!!\nnächste Zeile :)",osg::Vec4(1.0f,0.25f,1.0f,1.0f));

        osg::ref_ptr<visual_object> testObj5 = new visual_object( rootNode, "SAENGER" );
        testObj5->setNewPosition( osg::DegreesToRadians(47.8123), osg::DegreesToRadians(12.94088), 550 );
        testObj5->loadGeometry( "../models/saengerCombine.flt" );
        //testObj5->setScale( 2 );
        testObj5->addUpdater( new object_updater(testObj5) );

#ifdef USE_SPACENAVIGATOR
        // Manipulatoren auf dieses Objekt binden (Primärobjekt)
        if (objectMountedCameraManip.valid())
                objectMountedCameraManip->setAttachedObject( testObj4 );
        if (mouseTrackerManip.valid())
        {
                mouseTrackerManip->setTrackNode( testObj4->getGeometry() );
                mouseTrackerManip->setMinimumDistance( 100 );
        }
#endif

        osgGA::NodeTrackerManipulator::TrackerMode trackerMode = osgGA::NodeTrackerManipulator::NODE_CENTER;
        osgGA::NodeTrackerManipulator::RotationMode rotationMode = osgGA::NodeTrackerManipulator::ELEVATION_AZIM;
        nt->setTrackerMode(trackerMode);
    nt->setRotationMode(rotationMode);
        //nt->setAutoComputeHomePosition( true );
        nt->setMinimumDistance( 100 );
        nt->setTrackNode(testObj4->getGeometry());
        //nt->computeHomePosition();
        nt->setAutoComputeHomePosition( true );
        nt->setDistance( 250 );


        // Load EDDF
        //std::string filename = "D:\\DA\\EDDF_test\\eddf.ive";
        //if( !osgDB::fileExists(filename) )
        //{
        //      OSG_NOTIFY(osg::ALWAYS) << "Warning: EDDF Model not loaded. File '" << filename << "' does not exist. Skipping.";
        //}
        //// read model
        //osg::ref_ptr<osg::Node> tmpModel = osgDB::readNodeFile( filename );
        //if (tmpModel.valid())
        //      rootNode->addChild( tmpModel );
        
 
        visual_draw2D::getInstance()->init( rootNode, viewer );
        //osg::ref_ptr<visual_hud> hud = new visual_hud();
        osg::ref_ptr<visual_debug_hud> hud = new visual_debug_hud();
        hud->init( viewer, rootNode );
        

        //osg::ref_ptr<visual_draw3D> test = new visual_draw3D();
        //test->init( rootNode, viewer );

        // Creating Testclasses
        osg::ref_ptr<osgVisual::dataIO_transportContainer> test = new osgVisual::dataIO_transportContainer();
        osg::ref_ptr<osgVisual::dataIO_executer> testEx = new osgVisual::dataIO_executer();
        osg::ref_ptr<osgVisual::dataIO_slot> testSlot = new osgVisual::dataIO_slot();
        test->setFrameID( 22 );
        test->setName("ugamoep");
        testEx->setexecuterID( osgVisual::dataIO_executer::IS_COLLISION );
        testSlot->setVariableName(std::string("HalloName"));
        testSlot->setdataDirection( osgVisual::dataIO_slot::TO_OBJ );
        testSlot->setvarType( osgVisual::dataIO_slot::DOUBLE );
        testSlot->setValue( 0.12345 );
        test->addExecuter( testEx );
        test->addSlot( testSlot );

        // Writing object to stream
        //std::ofstream myOstream("test.txt" );
        std::stringstream myOstream;
        std::string extension = "osgb";
        bool compressed = false;
        osgDB::ReaderWriter* rw = osgDB::Registry::instance()->getReaderWriterForExtension(extension.c_str());
        if ( rw )
        {
                osgDB::ReaderWriter::WriteResult wr;

                if (extension == "osgb")
                {
                        if (compressed)
                                wr = rw->writeObject( *test, myOstream, new osgDB::Options("Compressor=zlib") );
                        else
                                wr = rw->writeObject( *test, myOstream );
                }

                if (extension == "osgt")
                {
                        if (compressed)
                                wr = rw->writeObject( *test, myOstream, new osgDB::Options("Ascii Compressor=zlib") );
                        else
                                wr = rw->writeObject( *test, myOstream, new osgDB::Options("Ascii") );
                }

                if (extension == "osgx")
                {
                        if (compressed)
                                wr = rw->writeObject( *test, myOstream, new osgDB::Options("XML Compressor=zlib") );
                        else
                                wr = rw->writeObject( *test, myOstream, new osgDB::Options("XML") );
                }


                if (!wr.success() )     OSG_NOTIFY( osg::WARN ) << "ERROR: Save failed: " << wr.message() << std::endl;
        }
        else
                OSG_NOTIFY( osg::WARN ) << "error getting readerWriter for osgt" << std::endl;

        // Size ermitteln.
        stringbuf *pbuf;
        pbuf = myOstream.rdbuf();
        OSG_NOTIFY( osg::WARN ) << "PBUF Bytes available: " << pbuf->in_avail() << std::endl;
        OSG_NOTIFY( osg::ALWAYS ) << "STRING Bytes available: " << myOstream.str().length() << std::endl;
        OSG_NOTIFY( osg::ALWAYS ) << "STRING content: " << myOstream.str() << std::endl;

        //Reading Stream to node
        if ( rw )
        {
                osgDB::ReaderWriter::ReadResult rr = rw->readObject( myOstream );
                osg::ref_ptr<osgVisual::dataIO_transportContainer> test2 = dynamic_cast<osgVisual::dataIO_transportContainer*>(rr.takeObject());
                if (test2)
                {
                        OSG_NOTIFY( osg::WARN ) << "TEST::FrameID is: " << test->getFrameID() << std::endl;
                }
                else
                        OSG_NOTIFY( osg::WARN ) << "Error converting stream to Node" << std::endl;
        }
}