Example #1
0
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    g_win= OSG::GLUTWindow::create();
    g_win->setGlutId(winid);
    g_win->init();

    g_scene = createScene();

    // create the SimpleSceneManager helper
    g_mgr = OSG::SimpleSceneManager::create();
    g_mgr->setUseTraversalAction(true);

    // tell the manager what to manage
    g_mgr->setWindow(g_win );
    g_mgr->setRoot  (g_scene);

    // add LabelForeground!!!
    g_labelForeground = OSG::LabelForeground::create();
    g_mgr->addForeground(g_labelForeground);

    // show the whole scene
    g_mgr->showAll();

    // GLUT main loop
    glutMainLoop();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
    std::cout << "start a cluster server with './testClusterServer -w pipe0'\n"
                 "press 'c' to connect to the servers.\n"
                 "press 'd' to disconnect from the servers.\n"
                 "press 'n' to delete current scene.\n"
                 "press 't' to create a torus.\n"
                 "press 'l' to load scene 'tie.wrl'.\n"
              << std::endl;
    
    // OSG init
    OSG::osgInit(argc,argv);

    OSG::VTKPolyDataMapper::getClassType().dump();

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG

    _client_win = OSG::GLUTWindow::create();

    _client_win->setGlutId(winid);
    _client_win->init();
    _client_win->setSize(300,300);
    
    for(OSG::Int32 i=0;i<argc-1;++i)
    {
        if(argv[i+1] != NULL)
            _pipenames.push_back(argv[i+1]);
    }

    if(_pipenames.empty())
        _pipenames.push_back("pipe0");
    
    _root = OSG::Node::create();
    
    _root->setCore(OSG::Group::create());
    
    // create default scene
//    NodePtr scene = makeTorus(.5, 2, 16, 16);
    OSG::NodeUnrecPtr scene = initVTK();

    _root->addChild(scene);

    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(_client_win );
    _mgr->setRoot  (_root);

    // show the whole scene
    _mgr->showAll();
    

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
	//sortNumbers function
	int numberArray[] = {2, 13, 56, 8, 22, 16, 24, 89, 11, 90}; 
	sortNumbers(numberArray,10);

    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // open a new scope, because the pointers gwin and scene below should
    // go out of scope before entering glutMainLoop.
    // Otherwise OpenSG will complain about objects being alive after shutdown.
    {
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        // create the scene
        OSG::NodeRefPtr scene = OSG::makeBox(1,1,1,2,2,2);
    
        OSG::commitChanges();
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
    
        // tell the manager what to manage
        mgr->setWindow(gwin );
        mgr->setRoot  (scene);
    
        // show the whole scene
        mgr->showAll();
    }
    
    // GLUT main loop
    glutMainLoop();

    return 0;
}
Example #4
0
int main(int argc, char* argv[])
{
    std::cerr << argv[0] << ". Press 'h' for keys" << std::endl;
    
    // Init OSG and glut.
    OSG::osgInit(argc,argv);
    {
        int winid = setupGLUT(&argc, argv);
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
        
        printFontFamilies();
        
        // load the scene
        OSG::NodeRefPtr scene = OSG::Node::create();
        scene->setCore(OSG::Group::create());
        
        // Setup text sample
        gTextStuff = new TextStuff();
        gTextStuff->initialize();
        gTextStuff->updateFace();
        gTextStuff->updateScene();
        scene->addChild(gTextStuff->mRootNode);
        
        mgr = OSG::SimpleSceneManager::create();
        
        // Tell the manager about the window and scene
        mgr->setWindow(gwin );
        mgr->setRoot(scene);
        
        // Start it up
        mgr->showAll();
    }
    
    glutMainLoop();

    return 0;
}
int main(int argc, char **argv)
{
    OSG::osgInit(argc,argv);
    
    {
        int winid = setupGLUT(&argc, argv);
        OSG::GLUTWindowRecPtr gwin= OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
        
        scene = createScenegraph();
        
        mgr = OSG::SimpleSceneManager::create();
        mgr->setWindow(gwin );
        mgr->setRoot  (scene);
        mgr->showAll();
        
        OSG::commitChanges();
    }
    
    glutMainLoop();

    return 0;
}
int main(int argc, char **argv)
{
    OSG::osgInit(argc,argv);
    
    if(argc > 1 && !strcmp(argv[1],"-s"))
    {
        show = false;
        argv++;
        argc--;
    }
    
    if(argc > 1 && !strcmp(argv[1],"-d"))
    {
        debug = true;
        argv++;
        argc--;
    }

    
    if(argc > 1)
    {
        scene = OSG::Node::create();
        OSG::GroupUnrecPtr g = OSG::Group::create();
        
        scene->setCore(g);
        
        for(OSG::UInt16 i = 1; i < argc; ++i)
            scene->addChild(OSG::SceneFileHandler::the()->read(argv[i]));
    }
    else
    {
        scene = OSG::makeTorus(.5, 3, 16, 16);
    }

    // GLUT init
    glutInit(&argc, argv);
    
    glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(1024, 768);
    mainwinid = glutCreateWindow("OpenSG");
    
    glutReshapeFunc(reshape);
    glutDisplayFunc(display);
    glutIdleFunc(idle);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);

    OSG::GLUTWindowUnrecPtr mainwin=OSG::GLUTWindow::create();
    mainwin->setGlutId(mainwinid);
    mainwin->init();
    
    // create the SimpleSceneManager helper
    mgr = OSG::SimpleSceneManager::create();

    // create the window and initial camera/viewport
    mgr->setWindow(mainwin);
    // tell the manager what to manage
    mgr->setRoot  (scene);

    OSG::commitChanges();

    // show the whole scene
    mgr->showAll();

    mgr->setUseTraversalAction(true);

    tact      = OSG::RenderAction::create();
#ifdef OSG_OLD_RENDER_ACTION
    act       = OSG::RenderAction::create();
#endif
    debugact  = OSG::RenderAction::create();
    tact->setOcclusionCulling(true);


    // Open the debug window
    if(debug)
    {
        OSG::traverse(scene, initMask);

        glutInitWindowSize(800, 400);
        debugwinid = glutCreateWindow("OpenSG Occlusion Debugging");

        glutReshapeFunc(reshape);
        glutDisplayFunc(display);
        glutIdleFunc(display);
        glutKeyboardFunc(keyboard);

        debugwin=OSG::GLUTWindow::create();
        debugwin->setGlutId(debugwinid);
        debugwin->init();       
        
        OSG::ViewportUnrecPtr vp = mainwin->getPort(0);
        
        OSG::ViewportUnrecPtr newvp = OSG::Viewport::create();        
        newvp->setLeft(0);
        newvp->setRight(0.5);
        newvp->setBottom(0);
        newvp->setTop(1);
        newvp->setRoot(vp->getRoot());
        newvp->setCamera(vp->getCamera());
        newvp->setBackground(vp->getBackground());
        newvp->setTravMask(0x1);
        debugwin->addPort(newvp);
        
        newvp = OSG::Viewport::create();        
        newvp->setLeft(0.5);
        newvp->setRight(1);
        newvp->setBottom(0);
        newvp->setTop(1);
        newvp->setRoot(vp->getRoot());
        newvp->setCamera(vp->getCamera());
        newvp->setBackground(vp->getBackground());
        newvp->setTravMask(0x2);
        debugwin->addPort(newvp);
        
        tact->setOcclusionCullingDebug(true);
        tact->setOcclusionDebugMasks(0x1, 0x2, 0x4);
    }

    // add the statistics forground
    
    statfg = OSG::SimpleStatisticsForeground::create();
    
    statfg->setSize(25);
    statfg->setColor(OSG::Color4f(0,1,0,0.7f));

    statfg->addElement(OSG::RenderAction::statDrawTime, 
                       "Draw FPS: %r.3f");
    statfg->addElement(OSG::RenderAction::statNMatrices, 
                       "Matrix Changes: %d");
    statfg->addElement(OSG::RenderAction::statNStates, 
                       "State Changes: %d");
                       
    statfg->addElement(OSG::RenderPartition::statCullTestedNodes, 
                       "Cull-tested Nodes: %d");
    statfg->addElement(OSG::RenderPartition::statCulledNodes, 
                       "Culled Nodes: %d");

    statfg->addElement(OSG::OcclusionCullingTreeBuilder::statNOccNodes, 
                       "Nodes in DrawTree: %d");
    statfg->addElement(OSG::OcclusionCullingTreeBuilder::statNOccTests, 
                       "Occ Tests: %d");
    statfg->addElement(OSG::OcclusionCullingTreeBuilder::statNOccInvisible, 
                       "Invisible Nodes: %d");
    statfg->addElement(OSG::OcclusionCullingTreeBuilder::statNOccSuccessTestPer, 
                       "OCC Success rate: %per%%");
    statfg->addElement(OSG::OcclusionCullingTreeBuilder::statNOccTriangles, 
                       "Triangles culled: %d");
   
    collector = statfg->getCollector();

    tact->setStatCollector(collector);
#ifdef OSG_OLD_RENDER_ACTION
    act ->setStatCollector(collector);
#endif

    mgr->setAction(tact);
#ifdef OSG_OLD_RENDER_ACTION
    mgr->setAction( act);
#endif

    //tact->setOcclusionCullingMinimumFeatureSize(15);
    //tact->setOcclusionCullingVisibilityThreshold(15);
    //tact->setScreenLODCoverageThreshold(0.005);
    
    if(show)
    {
        mainwin->getPort(0)->addForeground(statfg);
    }

#ifdef OSG_WITH_NVPERFSDK
    NVPMRESULT status;

    status = NVPMInit();
    if (status != NVPM_OK) {
        FFATAL(("NVPerfSDK failed to initialize - no GPU data will be available"));
    }
    else
    {
        nvDataProvider->add("gpu_idle");
        nvDataProvider->add("pixel_shader_busy");
        nvDataProvider->add("vertex_shader_busy");
        nvDataProvider->add("shader_waits_for_texture");
        if (!nvDataProvider->add("OGL FPS")) 
            FLOG(("nvDataProvider::add: 'OGL FPS' failed!\n"));
        
        statfg->addElement(GPUIdleStat);
        statfg->addElement(PSBusyStat);
        statfg->addElement(VSBusyStat);
        statfg->addElement(TextureWaitStat);
        statfg->addElement(OGLFPSStat);        
    }
#endif
    
    // GLUT main loop
    glutMainLoop();

    return 0;
}
void init(int argc, char *argv[])
{
    OSG::osgInit(argc, argv);

    int glutWinId = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin= OSG::GLUTWindow::create();
    gwin->setGlutId(glutWinId);
    gwin->init();
    
    // load the scene
    root  = OSG::ChunkOverrideGroup::create();
    rootN = OSG::makeNodeFor(root);
        
    if(argc < 2)
    {
        FWARNING(("No file given!\n"));
        FWARNING(("Supported file formats:\n"));
            
        OSG::SceneFileHandler::the()->print();
        sceneN = OSG::makeTorus(.5, 2, 16, 16);
    }
    else
    {
        /*
          All scene file loading is handled via the SceneFileHandler.
        */
        sceneN = OSG::SceneFileHandler::the()->read(argv[1]);
    }

    OSG::TransformUnrecPtr xform  = OSG::Transform::create();
    OSG::NodeUnrecPtr      xformN = OSG::makeNodeFor(xform);

    // xform->editMatrix().setTranslate(OSG::Vec3f(100.f, 0.f, 0.f));
    // xform->editMatrix().setRotate(OSG::Quaternion(OSG::Vec3f(0.f, 1.f, 0.f), 0.3f * OSG::Pi));

    OSG::NodeUnrecPtr     boxN    = OSG::makeBox(1.f, 1.f, 5.f, 1, 1, 1);

    xformN->addChild(sceneN);
    rootN ->addChild(xformN);
    rootN ->addChild(boxN  );

    OSG::commitChanges();
    
    // collect geometries in the scene
    collectGeometry(rootN);

    // construct skin shader
    vpSkin = OSG::ShaderProgram::createVertexShader  ();
    vpSkin->setProgram(vpCode);

    fpSkin = OSG::ShaderProgram::createFragmentShader();
    fpSkin->setProgram(fpCode);

    shSkin = OSG::ShaderProgramChunk::create();
    shSkin->addShader(vpSkin);
    shSkin->addShader(fpSkin);

    matSkin = OSG::ChunkMaterial::create();
    matSkin->addChunk(shSkin);

    // process animations
    processAnim(sceneN);

    // create the SimpleSceneManager helper
    mgr = OSG::SimpleSceneManager::create();
    
    // tell the manager what to manage
    mgr->setWindow(gwin );
    mgr->setRoot  (rootN);
    
    // show the whole scene
    mgr->showAll();
}
//
// Initialize GLUT & OpenSG and set up the scene
//
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // open a new scope, because the pointers below should go out of scope
    // before entering glutMainLoop.
    // Otherwise OpenSG will complain about objects being alive after shutdown.
    {
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
        mgr->setWindow(gwin);

        // create a pretty simple graph: a Group with two Transforms as children,
        // each of which carries a single Geometry.
        
        // The scene
        
        OSG::NodeRefPtr  scene = OSG::Node::create();
        
        // The cylinder and its transformation
        OSG::NodeRefPtr     cyl    = OSG::Node::create();
        OSG::GeometryRefPtr cylgeo = OSG::makeCylinderGeo( 1.4f, .3f, 24, 
                                                           true, true, true );
        
        cyl->setCore(cylgeo);
    
        cyltrans = OSG::Transform::create();
    
        OSG::NodeRefPtr cyltransnode = OSG::Node::create();
        cyltransnode->setCore (cyltrans);
        cyltransnode->addChild(cyl     );
        
        // add it to the scene
        scene->addChild(cyltransnode);
        
        // The torus and its transformation
        OSG::NodeRefPtr     torus    = OSG::Node::create();
        OSG::GeometryRefPtr torusgeo = OSG::makeTorusGeo( .2f, 1, 24, 36 );
        
        torus->setCore(torusgeo);
            
        tortrans = OSG::Transform::create();
    
        OSG::NodeRefPtr tortransnode = OSG::Node::create();
        tortransnode->setCore (tortrans);
        tortransnode->addChild(torus   );
        
        // add it to the scene
        scene->addChild(tortransnode);

        //
        // create the shader program
        //
        OSG::ShaderProgramChunkRefPtr prog_chunk = OSG::ShaderProgramChunk::create();
        OSG::ShaderProgramRefPtr      vertShader = OSG::ShaderProgram::createVertexShader();
        OSG::ShaderProgramRefPtr      fragShader = OSG::ShaderProgram::createFragmentShader();

        vertShader->setProgram(get_vp_program());
        fragShader->setProgram(get_fp_program());

        //
        // binding the unifrom block to a buffer binding point can be performed 
        // either by calling the shaders's addUniformBlock method or by
        // adding a 'uniform block' variable to a ShaderProgramVariableChunk.
        // In the following we use both variants for illustration.
        //
        fragShader->addUniformBlock("Materials", 1);    // block binding point
        fragShader->addUniformBlock("Lights",    2);    // block binding point

        //
        // The following is replaced by adding ShaderProgramVariableChunk objects
        // to the chunk material. See below...
        //
        // fragShader->addUniformBlock("GeomState", 3);    // block binding point

        prog_chunk->addShader(vertShader);
        prog_chunk->addShader(fragShader);

        //
        // create uniform buffer objects and corresponding materials
        //
        OSG::UniformBufferObjChunkRefPtr ubo_material_database = create_material_database_state(materials);
                                         ubo_light_state       = create_light_state(lights);

        OSG::PolygonChunkRefPtr polygon_chunk = OSG::PolygonChunk::create();
        polygon_chunk->setFrontMode(GL_FILL);
        polygon_chunk->setBackMode(GL_FILL);
        polygon_chunk->setCullFace(GL_NONE);

        OSG::DepthChunkRefPtr depth_chunk = OSG::DepthChunk::create();
        depth_chunk->setEnable(true);

        OSG::ChunkMaterialRefPtr prog_state = OSG::ChunkMaterial::create();
        prog_state->addChunk(ubo_material_database, 1);  // buffer binding point 1
        prog_state->addChunk(ubo_light_state,       2);  // buffer binding point 2
        prog_state->addChunk(prog_chunk);
        prog_state->addChunk(polygon_chunk);
        prog_state->addChunk(depth_chunk);

        OSG::ShaderProgramVariableChunkRefPtr shader_var_chunk = OSG::ShaderProgramVariableChunk::create();
        shader_var_chunk->addUniformBlock("GeomState", 3);

        GeomState geom1; geom1.material_index = dist(generator);
        OSG::ChunkMaterialRefPtr geom1_state = OSG::ChunkMaterial::create();
        ubo_geom_state_1 = create_geometry_material_state(geom1);
        geom1_state->addChunk(ubo_geom_state_1, 3);     // buffer binding point 3
        geom1_state->addChunk(shader_var_chunk);        // block binding point

        GeomState geom2; geom2.material_index = dist(generator);
        OSG::ChunkMaterialRefPtr geom2_state = OSG::ChunkMaterial::create();
        ubo_geom_state_2 = create_geometry_material_state(geom2);
        geom2_state->addChunk(ubo_geom_state_2, 3);     // buffer binding point 3
        geom1_state->addChunk(shader_var_chunk);        // block binding point
       
        cylgeo  ->setMaterial(geom1_state);
        torusgeo->setMaterial(geom2_state);

        OSG::MaterialChunkOverrideGroupRefPtr mgrp = OSG::MaterialChunkOverrideGroup::create();
        mgrp->setMaterial(prog_state);
        scene->setCore(mgrp);

        OSG::commitChanges();
    
        mgr->setRoot(scene);
    
        // show the whole scene
        mgr->showAll();
    }

    // GLUT main loop
    glutMainLoop();

    return 0;
}
//
// Initialize GLUT & OpenSG and set up the scene
//
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // open a new scope, because the pointers below should go out of scope
    // before entering glutMainLoop.
    // Otherwise OpenSG will complain about objects being alive after shutdown.
    {
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
        mgr->setWindow(gwin);

        // create a pretty simple graph: a Group with two Transforms as children,
        // each of which carries a single Geometry.
        
        // The scene
        
        OSG::NodeRefPtr  scene = OSG::Node::create();
        
        // The cylinder and its transformation
        OSG::NodeRefPtr     cyl    = OSG::Node::create();
        OSG::GeometryRefPtr cylgeo = OSG::makeCylinderGeo( 1.4f, .3f, 24, 
                                                           true, true, true );
        
        cyl->setCore(cylgeo);
    
        cyltrans = OSG::Transform::create();
    
        OSG::NodeRefPtr cyltransnode = OSG::Node::create();
        cyltransnode->setCore (cyltrans);
        cyltransnode->addChild(cyl     );
        
        // add it to the scene
        scene->addChild(cyltransnode);
        
        // The torus and its transformation
        OSG::NodeRefPtr     torus    = OSG::Node::create();
        OSG::GeometryRefPtr torusgeo = OSG::makeTorusGeo( .2f, 1, 24, 36 );
        
        torus->setCore(torusgeo);
            
        tortrans = OSG::Transform::create();
    
        OSG::NodeRefPtr tortransnode = OSG::Node::create();
        tortransnode->setCore (tortrans);
        tortransnode->addChild(torus   );
        
        // add it to the scene
        scene->addChild(tortransnode);

        //
        // create the shader program
        //
        OSG::ShaderProgramChunkRefPtr prog_chunk = OSG::ShaderProgramChunk::create();
        OSG::ShaderProgramRefPtr      vertShader = OSG::ShaderProgram::createVertexShader();
        OSG::ShaderProgramRefPtr      fragShader = OSG::ShaderProgram::createFragmentShader();

        vertShader->setProgram(get_vp_program());
        fragShader->setProgram(get_fp_program());

        //
        // binding the shader storage block to a buffer binding point can be performed 
        // either by calling the shaders's addShaderStorageBlock method or by
        // adding a 'buffer block' variable to a ShaderProgramVariableChunk.
        // In the following we use both variants for illustration.
        //
        fragShader->addShaderStorageBlock("ExampleBlock", 1); // block binding point

        prog_chunk->addShader(vertShader);
        prog_chunk->addShader(fragShader);

        //
        // create shader storage buffer object for block 'ExampleBlock'
        //
        OSG::MultiPropertySSBOChunkRefPtr ssbo_example_block = create_example_block_state();

        OSG::PolygonChunkRefPtr polygon_chunk = OSG::PolygonChunk::create();
        polygon_chunk->setFrontMode(GL_FILL);
        polygon_chunk->setBackMode(GL_FILL);
        polygon_chunk->setCullFace(GL_NONE);

        OSG::DepthChunkRefPtr depth_chunk = OSG::DepthChunk::create();
        depth_chunk->setEnable(true);

        OSG::ChunkMaterialRefPtr prog_state = OSG::ChunkMaterial::create();
        prog_state->addChunk(ssbo_example_block, 1);      // buffer binding point 1
        prog_state->addChunk(prog_chunk);
        prog_state->addChunk(polygon_chunk);
        prog_state->addChunk(depth_chunk);

        OSG::MaterialChunkOverrideGroupRefPtr mgrp = OSG::MaterialChunkOverrideGroup::create();
        mgrp->setMaterial(prog_state);
        scene->setCore(mgrp);

        OSG::commitChanges();
    
        mgr->setRoot(scene);
    
        // show the whole scene
        mgr->showAll();
    }

    // GLUT main loop
    glutMainLoop();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    /*
       open a new scope, because the pointers below should go out of scope
       before entering glutMainLoop.
       Otherwise OpenSG will complain about objects being alive after shutdown.
    */
    {
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        /*
           create the scene

           In the previous example, the colors and positions used the same
           indices. That might not always be the preferred way, and it might not
           make sense for other properties, e.g. normals.

           It is possible to assign a different index for every property. See the
           indices section below for details.


           The initial setup is the same as in 06indexgeometry
        */

        OSG::GeoUInt8PropertyRefPtr type = OSG::GeoUInt8Property::create();
        type->addValue(GL_POLYGON  );
        type->addValue(GL_TRIANGLES);
        type->addValue(GL_QUADS    );
    
        OSG::GeoUInt32PropertyRefPtr lens = OSG::GeoUInt32Property::create();
        lens->addValue(4);
        lens->addValue(6);
        lens->addValue(8);
        
        // positions
        OSG::GeoPnt3fPropertyRefPtr pnts = OSG::GeoPnt3fProperty::create();
        // the base
        pnts->addValue(OSG::Pnt3f(-1, -1, -1));
        pnts->addValue(OSG::Pnt3f(-1, -1,  1));
        pnts->addValue(OSG::Pnt3f( 1, -1,  1));
        pnts->addValue(OSG::Pnt3f( 1, -1, -1));
    
        // the roof base
        pnts->addValue(OSG::Pnt3f(-1,  0, -1));
        pnts->addValue(OSG::Pnt3f(-1,  0,  1));
        pnts->addValue(OSG::Pnt3f( 1,  0,  1));
        pnts->addValue(OSG::Pnt3f( 1,  0, -1));
    
        // the gable
        pnts->addValue(OSG::Pnt3f( 0,  1, -1));
        pnts->addValue(OSG::Pnt3f( 0,  1,  1));
    
        // colors
        OSG::GeoVec3fPropertyRefPtr colors = OSG::GeoVec3fProperty::create();
        colors->push_back(OSG::Color3f(1, 1, 0));
        colors->push_back(OSG::Color3f(1, 0, 0));
        colors->push_back(OSG::Color3f(1, 0, 0));
        colors->push_back(OSG::Color3f(1, 1, 0));
        colors->push_back(OSG::Color3f(0, 1, 1));
        colors->push_back(OSG::Color3f(1, 0, 1));
        
        /*
           A new property: normals.

           They are used for lighting calculations and have to point away from the
           surface. Normals are standard vectors.
        */
        
        OSG::GeoVec3fPropertyRefPtr norms = OSG::GeoVec3fProperty::create();
        norms->push_back(OSG::Vec3f(-1,  0,  0));
        norms->push_back(OSG::Vec3f( 1,  0,  0));
        norms->push_back(OSG::Vec3f( 0, -1,  0));
        norms->push_back(OSG::Vec3f( 0,  1,  0));
        norms->push_back(OSG::Vec3f( 0,  0, -1));
        norms->push_back(OSG::Vec3f( 0,  0,  1));
        
        /*
           To use more than one index for a geometry, create multiple
           GeoUInt32Property (or GeoUInt8Property or GeoUInt16Property) objects
           and add them as index for the corresponding property you want to
           index.
        */
        
        OSG::GeoUInt32PropertyRefPtr ind1 = OSG::GeoUInt32Property::create();
        OSG::GeoUInt32PropertyRefPtr ind2 = OSG::GeoUInt32Property::create();
        
        // fill first index (will be used for positions)
        ind1->push_back(0);     // polygon
        ind1->push_back(1);
        ind1->push_back(2);
        ind1->push_back(3);
        
        ind1->push_back(7);     // triangle 1
        ind1->push_back(4);
        ind1->push_back(8);
        ind1->push_back(5);     // triangle 2
        ind1->push_back(6);
        ind1->push_back(9);
        
        ind1->push_back(1);     // quad 1
        ind1->push_back(2);
        ind1->push_back(6);
        ind1->push_back(5);
        ind1->push_back(3);     // quad 2
        ind1->push_back(0);
        ind1->push_back(4);
        ind1->push_back(7);
        
        // fill second index (will be used for colors/normals)
        ind2->push_back(3);     // polygon
        ind2->push_back(3);
        ind2->push_back(3);
        ind2->push_back(3);
        
        ind2->push_back(4);     // triangle 1
        ind2->push_back(4);
        ind2->push_back(4);
        ind2->push_back(5);     // triangle 2
        ind2->push_back(5);
        ind2->push_back(5);
        
        ind2->push_back(5);     // quad 1
        ind2->push_back(5);
        ind2->push_back(5);
        ind2->push_back(5);
        ind2->push_back(4);     // quad 2
        ind2->push_back(4);
        ind2->push_back(4);
        ind2->push_back(4);
        

        /*
            Put it all together into a Geometry NodeCore.
        */
        OSG::GeometryRefPtr geo = OSG::Geometry::create();
        geo->setTypes    (type);
        geo->setLengths  (lens);
        
        /*
           Set the properties and indices used to index them.
           Calling geo->setProperty(pnts, Geometry::PositionsIndex) is the
           same as calling geo->setPositions(pnts), but this way it is
           more obvious which properties and indices go together.
        */
        
        geo->setProperty(pnts,   OSG::Geometry::PositionsIndex);
        geo->setIndex   (ind1,   OSG::Geometry::PositionsIndex);
        
        geo->setProperty(norms,  OSG::Geometry::NormalsIndex  );
        geo->setIndex   (ind2,   OSG::Geometry::NormalsIndex  );
        
        geo->setProperty(colors, OSG::Geometry::ColorsIndex   );
        geo->setIndex   (ind2,   OSG::Geometry::ColorsIndex   );
        
        geo->setMaterial (OSG::getDefaultMaterial());   
        
        // put the geometry core into a node
        OSG::NodeRefPtr n = OSG::Node::create();
        n->setCore(geo);
        
        // add a transformation to make it move     
        OSG::NodeRefPtr scene = OSG::Node::create();
        trans = OSG::Transform::create();
        scene->setCore(trans);
        scene->addChild(n);
    
        OSG::commitChanges();
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
    
        // tell the manager what to manage
        mgr->setWindow(gwin );
        mgr->setRoot  (scene);
    
        // show the whole scene
        mgr->showAll();
    }

    // GLUT main loop
    glutMainLoop();

    return 0;
}
int main(int argc, char **argv)
{
    g_error = 0.01f;

    if ( argc > 1 && !strcmp(argv[1], "-f"))
    {
        std::cerr << "Using forceTesselate()." << std::endl;
        useForceTesselate = true;
        ++argv, --argc;
    }
    
    if ( argc == 2 )
    {
        g_error = atof( argv[1] );
    }
    if ( g_error < 0.001 )
    {
        g_error = 0.001f;
    }
    
    OSG::osgInit(argc,argv);
    // GLUT init
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);

    int winid = glutCreateWindow("OpenSG");
    
    glutReshapeFunc(reshape);
    glutDisplayFunc(display);
    glutIdleFunc(display);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);

    {
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        // create the scene
        OSG::NodeRefPtr scene;
        scene = makeScene( );
        
        if ( scene == NULL )
        {
            std::cerr<<"makeScene returned NullFC, exiting..."<<std::endl;
            return -1;
        }
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
    
        // create the window and initial camera/viewport
        mgr->setWindow( gwin );
        // tell the manager what to manage
        mgr->setRoot  ( scene );
        
        // show the whole scene
        mgr->showAll();
        mgr->redraw();
        OSG::SolidBackgroundRefPtr bgr = OSG::SolidBackground::create();
        bgr->setColor( OSG::Color3f( 0.7f, 0.7f, 0.7f ));
        mgr->getWindow()->getPort(0)->setBackground( bgr );
    }
    
    // GLUT main loop
    glutMainLoop();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
    printf("Press key '9' or '0' to toggle light sources.\n");
    printf("Set the shadow mode with key '1' ... '8'\n");
    printf("Change MapSize with keys 'y' = 512, 'x' = 1024, 'c' = 2048\n");
    printf("NOTE: Real point lights only supported for ShadowMode 1...6!\n");
    // OSG init
    OSG::osgInit(argc, argv);

    // GLUT init
    int                     winid = setupGLUT(&argc, argv);
    gwin = OSG::GLUTWindow::create();

    //Erstellen der ben�tigten Komponenten--------------------------------------

    rootNode = OSG::makeCoredNode<OSG::Group>();
    OSG::NodeUnrecPtr                 scene = OSG::makeCoredNode<OSG::Group>();

    /*
    // create lights
    //Directional Light 1
    OSG::NodeUnrecPtr light1        = OSG::makeCoredNode<OSG::DirectionalLight>(&_light1_core);
    OSG::NodeUnrecPtr light1_beacon = OSG::makeCoredNode<OSG::Transform>(&_light1_trans);
    _light1_trans->editMatrix().setTranslate(0.0, 0.0, 0.0);
    _light1_core->setDirection(0.8,0.8,0.5);
    _light1_core->setAmbient(0.15,0.15,0.15,1);
    _light1_core->setDiffuse(0.5,0.5,0.5,1);
    _light1_core->setSpecular(0.0,0.0,0.0,1);
    _light1_core->setBeacon(light1_beacon);
    _light1_core->setShadowIntensity(0.7);
    _light1_core->setOn(true);
    */

    // Point Light 1
    OSG::NodeUnrecPtr light1        = OSG::makeCoredNode<OSG::PointLight>(&_light1_core);
    OSG::NodeUnrecPtr light1_beacon = OSG::makeCoredNode<OSG::Transform >(&_light1_trans);
    _light1_trans->editMatrix().setTranslate(50.0, 50.0, 10.0);

    _light1_core->setAmbient(0.15f, 0.15f, 0.15f, 1);
    _light1_core->setDiffuse(0.5f, 0.5f, 0.5f, 1);
    _light1_core->setSpecular(0.0f, 0.0f, 0.0f, 1);
    _light1_core->setBeacon(light1_beacon);
    _light1_core->setOn(true);
    _light1_core->setShadowIntensity(0.8f);

    // Spot Light 2
    OSG::NodeUnrecPtr light2        = OSG::makeCoredNode<OSG::SpotLight>(&_light2_core);
    OSG::NodeUnrecPtr light2_beacon = OSG::makeCoredNode<OSG::Transform>(&_light2_trans);
    //_light2_trans->editMatrix().setTranslate(75.0, 0.0, 25.0);
    _light2_trans->editMatrix().setTranslate(250.0, -250.0, 300.0);
       
    _light2_core->setAmbient(0.15,0.15,0.15,1);
    _light2_core->setDiffuse(0.5,0.5,0.5,1);
    _light2_core->setSpecular(0.0,0.0,0.0,1);
    _light2_core->setSpotCutOffDeg(40.0);
    _light2_core->setSpotDirection(-0.85,0.85,-1.0);
    _light2_core->setBeacon(light2_beacon);
    _light2_core->setShadowIntensity(0.7);
    _light2_core->setOn(true);

    /*
    // Point Light 2
    OSG::NodeUnrecPtr light2        = OSG::makeCoredNode<OSG::PointLight>(&_light2_core);
    OSG::NodeUnrecPtr light2_beacon = OSG::makeCoredNode<OSG::Transform> (&_light2_trans);
    _light2_trans->editMatrix().setTranslate(40.0, 0.0, 40.0);

    _light2_core->setAmbient(0.15f, 0.15f, 0.15f, 1);
    _light2_core->setDiffuse(0.5f, 0.5f, 0.5f, 1);
    _light2_core->setSpecular(0.0f, 0.0f, 0.0f, 1);
    _light2_core->setBeacon(light2_beacon);
    _light2_core->setOn(false);
    _light2_core->setShadowIntensity(0.7f);
    */

    light1->addChild(light2);

    light2->addChild(scene);

    //Eigene Kamera erstellen
    Pcamera = OSG::PerspectiveCamera::create();
    cam_beacon = OSG::makeCoredNode<OSG::Transform>(&cam_trans);
    cam_trans->editMatrix().setTranslate(0.0, 0.0, 25.0);

    Pcamera->setBeacon(cam_beacon);
    Pcamera->setFov(OSG::osgDegree2Rad(60));
    Pcamera->setNear(1.0);
    Pcamera->setFar(1000);

    // create scene

    // bottom
    OSG::NodeUnrecPtr                 plane = OSG::makePlane(300.0, 300.0, 256, 256);

    OSG::ImageUnrecPtr                plane_img = OSG::Image::create();
    plane_img->read("gras.jpg");

    OSG::TextureObjChunkUnrecPtr         plane_tex_obj = OSG::TextureObjChunk::create();
    OSG::TextureEnvChunkUnrecPtr         plane_tex_env = OSG::TextureEnvChunk::create();
    plane_tex_obj->setImage(plane_img);
    plane_tex_obj->setMinFilter(GL_LINEAR);
    plane_tex_obj->setMagFilter(GL_LINEAR);
    plane_tex_obj->setWrapS(GL_REPEAT);
    plane_tex_obj->setWrapT(GL_REPEAT);
    plane_tex_env->setEnvMode(GL_MODULATE);

    OSG::SimpleMaterialUnrecPtr       plane_mat = OSG::SimpleMaterial::create();
    plane_mat->setAmbient(OSG::Color3f(0.3f, 0.3f, 0.3f));
    plane_mat->setDiffuse(OSG::Color3f(1.0f, 1.0f, 1.0f));
    plane_mat->addChunk(plane_tex_obj);
    plane_mat->addChunk(plane_tex_env);

    OSG::Geometry *plane_geo = dynamic_cast<OSG::Geometry *>(plane->getCore());
    plane_geo->setMaterial(plane_mat);

    //load Tree Objects

    OSG::NodeUnrecPtr                 tree1_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree1_trans);
    OSG::NodeUnrecPtr                 tree2_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree2_trans);
    OSG::NodeUnrecPtr                 tree3_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree3_trans);
    OSG::NodeUnrecPtr                 tree4_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree4_trans);
    OSG::NodeUnrecPtr                 tree5_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree5_trans);
    OSG::NodeUnrecPtr                 tree6_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree6_trans);
    OSG::NodeUnrecPtr                 tree7_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree7_trans);
    OSG::NodeUnrecPtr                 tree8_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree8_trans);
    OSG::NodeUnrecPtr                 tree9_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_tree9_trans);

    _tree1_trans->editMatrix().setTranslate(-80.0, -80.0, 0.0);
    _tree1_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree2_trans->editMatrix().setTranslate(0.0, -80.0, 0.0);
    _tree2_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree3_trans->editMatrix().setTranslate(80.0, -80.0, 0.0);
    _tree3_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree4_trans->editMatrix().setTranslate(-80.0, 0.0, 0.0);
    _tree4_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree5_trans->editMatrix().setTranslate(0.0, 0.0, 0.0);
    _tree5_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree6_trans->editMatrix().setTranslate(80.0, 0.0, 0.0);
    _tree6_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree7_trans->editMatrix().setTranslate(-80.0, 80.0, 0.0);
    _tree7_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree8_trans->editMatrix().setTranslate(0.0, 80.0, 0.0);
    _tree8_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    _tree9_trans->editMatrix().setTranslate(80.0, 80.0, 0.0);
    _tree9_trans->editMatrix().setScale(OSG::Vec3f(12.0, 12.0, 10.0));

    OSG::NodeUnrecPtr tree1 = OSG::SceneFileHandler::the()->read("tree1.3ds");

//    NodeUnrecPtr tree1 = makeSphere(2, 2.0);

    tree1_trans_node->addChild(tree1);

    tree2_trans_node->addChild(cloneTree(tree1));


    tree3_trans_node->addChild(cloneTree(tree1));

    tree4_trans_node->addChild(cloneTree(tree1));

    tree5_trans_node->addChild(cloneTree(tree1));

    tree6_trans_node->addChild(cloneTree(tree1));

    tree7_trans_node->addChild(cloneTree(tree1));

    tree8_trans_node->addChild(cloneTree(tree1));

    tree9_trans_node->addChild(cloneTree(tree1));

    OSG::NodeUnrecPtr                 trees = OSG::makeCoredNode<OSG::Group>();

    trees->addChild(tree1_trans_node);
    trees->addChild(tree2_trans_node);
    trees->addChild(tree3_trans_node);
    trees->addChild(tree4_trans_node);
    trees->addChild(tree5_trans_node);
    trees->addChild(tree6_trans_node);
    trees->addChild(tree7_trans_node);
    trees->addChild(tree8_trans_node);
    trees->addChild(tree9_trans_node);

    /*//load Airplane Object
       NodePtr obj1_trans_node = makeCoredNode<Transform>(&_obj1_trans);
       
       _obj1_trans->editMatrix().setTranslate(0.0, 0.0, 10.0);
       _obj1_trans->editMatrix().setScale(Vec3f(0.15,0.15,0.15));
       
       NodePtr object1 = SceneFileHandler::the().read("triplane.3ds");
       
       obj1_trans_node->addChild(object1);
       */

    //Load a Quad as Pointlight
    OSG::GeometryUnrecPtr             boxGeo = OSG::makeBoxGeo(15, 15, 15, 1, 1, 1);
    OSG::NodeUnrecPtr                 boxNode = OSG::Node::create();
    boxNode->setCore(boxGeo);

    OSG::SimpleMaterialUnrecPtr       box_mat = OSG::SimpleMaterial::create();
    box_mat->setAmbient(OSG::Color3f(0.95f, 1.0f, 0.2f));
    box_mat->setDiffuse(OSG::Color3f(0.95f, 1.0f, 0.2f));

    boxGeo->setMaterial(box_mat);

    OSG::NodeUnrecPtr                 obj1_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_obj1_trans);

    obj1_trans_node->addChild(boxNode);

    //load Dino Objects

    OSG::NodeUnrecPtr                 dino1_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_dino1_trans);
    OSG::NodeUnrecPtr                 dino2_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_dino2_trans);
    OSG::NodeUnrecPtr                 dino3_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_dino3_trans);
    OSG::NodeUnrecPtr                 dino4_trans_node = OSG::makeCoredNode<OSG::Transform>
        (&_dino4_trans);

    _dino1_trans->editMatrix().setTranslate(-20.0, -20.0, 10.0);
    _dino1_trans->editMatrix().setScale(OSG::Vec3f(5.0, 5.0, 5.0));

    _dino2_trans->editMatrix().setTranslate(-20.0, -20.0, 6.0);
    _dino2_trans->editMatrix().setScale(OSG::Vec3f(3.0, 3.0, 3.0));

    _dino3_trans->editMatrix().setTranslate(-20.0, -20.0, 6.0);
    _dino3_trans->editMatrix().setScale(OSG::Vec3f(3.0, 3.0, 3.0));

    _dino4_trans->editMatrix().setTranslate(-20.0, -20.0, 6.0);
    _dino4_trans->editMatrix().setScale(OSG::Vec3f(3.0, 3.0, 3.0));

    OSG::NodeUnrecPtr dino1 = OSG::SceneFileHandler::the()->read("dinopet.3ds");

//    NodeUnrecPtr dino1 = makeBox(2., 2., 2., 4, 4, 4);

    dino1_trans_node->addChild(dino1);

    dino2_trans_node->addChild(cloneTree(dino1));

    dino3_trans_node->addChild(cloneTree(dino1));

    dino4_trans_node->addChild(cloneTree(dino1));

    OSG::NodeUnrecPtr                 dinos = OSG::makeCoredNode<OSG::Group>();

    dinos->addChild(dino1_trans_node);
    dinos->addChild(dino2_trans_node);
    dinos->addChild(dino3_trans_node);
    dinos->addChild(dino4_trans_node);

    //load Stone Objects

    OSG::TransformUnrecPtr            _stone_trans1, _stone_trans2, _stone_trans3,
                            _stone_trans4, _stone_trans5, _stone_trans6,
                            _stone_trans7, _stone_trans8,
                            _stone_trans9;
    OSG::NodeUnrecPtr                 stone_trans_node1 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans1);
    OSG::NodeUnrecPtr                 stone_trans_node2 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans2);
    OSG::NodeUnrecPtr                 stone_trans_node3 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans3);
    OSG::NodeUnrecPtr                 stone_trans_node4 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans4);
    OSG::NodeUnrecPtr                 stone_trans_node5 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans5);
    OSG::NodeUnrecPtr                 stone_trans_node6 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans6);
    OSG::NodeUnrecPtr                 stone_trans_node7 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans7);
    OSG::NodeUnrecPtr                 stone_trans_node8 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans8);
    OSG::NodeUnrecPtr                 stone_trans_node9 = OSG::makeCoredNode<OSG::Transform>
        (&_stone_trans9);

    _stone_trans1->editMatrix().setTranslate(-70, -70, 0);

    _stone_trans2->editMatrix().setTranslate(10, -70, 0);

    _stone_trans3->editMatrix().setTranslate(90, -70, 0);

    _stone_trans4->editMatrix().setTranslate(-70, 10, 0);

    _stone_trans5->editMatrix().setTranslate(10, 10, 0);

    _stone_trans6->editMatrix().setTranslate(90, 10, 0);

    _stone_trans7->editMatrix().setTranslate(-70, 90, 0);

    _stone_trans8->editMatrix().setTranslate(10, 90, 0);

    _stone_trans9->editMatrix().setTranslate(90, 90, 0);

    OSG::NodeUnrecPtr                 stone1 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone2 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone3 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone4 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone5 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone6 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone7 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone8 = OSG::makeSphere(1, 7.0);
    OSG::NodeUnrecPtr                 stone9 = OSG::makeSphere(1, 7.0);

    OSG::ImageUnrecPtr                plane_img2 = OSG::Image::create();
    plane_img2->read("stone.jpg");

    OSG::TextureObjChunkUnrecPtr         plane_tex2_obj = OSG::TextureObjChunk::create();
    OSG::TextureEnvChunkUnrecPtr         plane_tex2_env = OSG::TextureEnvChunk::create();
    plane_tex2_obj->setImage(plane_img2);
    plane_tex2_obj->setMinFilter(GL_LINEAR);
    plane_tex2_obj->setMagFilter(GL_LINEAR);
    plane_tex2_obj->setWrapS(GL_REPEAT);
    plane_tex2_obj->setWrapT(GL_REPEAT);
    plane_tex2_env->setEnvMode(GL_MODULATE);

    OSG::SimpleMaterialUnrecPtr       plane_mat2 = OSG::SimpleMaterial::create();
    plane_mat2->setAmbient(OSG::Color3f(0.3f, 0.3f, 0.3f));
    plane_mat2->setDiffuse(OSG::Color3f(1.0f, 1.0f, 1.0f));
    plane_mat2->addChunk(plane_tex2_obj);
    plane_mat2->addChunk(plane_tex2_env);

    OSG::Geometry *plane_geo3 = dynamic_cast<OSG::Geometry *>(stone1->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone2->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone3->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone4->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone5->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone6->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone7->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone8->getCore());
    plane_geo3->setMaterial(plane_mat2);

    plane_geo3 = dynamic_cast<OSG::Geometry *>(stone9->getCore());
    plane_geo3->setMaterial(plane_mat2);


    stone_trans_node1->addChild(stone1);

    stone_trans_node2->addChild(stone2);

    stone_trans_node3->addChild(stone3);

    stone_trans_node4->addChild(stone4);

    stone_trans_node5->addChild(stone5);

    stone_trans_node6->addChild(stone6);

    stone_trans_node7->addChild(stone7);

    stone_trans_node8->addChild(stone8);

    stone_trans_node9->addChild(stone9);

    OSG::NodeUnrecPtr                 stones = OSG::makeCoredNode<OSG::Group>();

    stones->addChild(stone_trans_node1);
    stones->addChild(stone_trans_node2);
    stones->addChild(stone_trans_node3);
    stones->addChild(stone_trans_node4);
    stones->addChild(stone_trans_node5);
    stones->addChild(stone_trans_node6);
    stones->addChild(stone_trans_node7);
    stones->addChild(stone_trans_node8);
    stones->addChild(stone_trans_node9);


    scene->addChild(plane);
    scene->addChild(obj1_trans_node);
    scene->addChild(trees);
    scene->addChild(stones);
    scene->addChild(dinos);

    svp = OSG::ShadowStage::create();
    OSG::GradientBackgroundUnrecPtr   gbg = OSG::GradientBackground::create();
    OSG::SolidBackgroundUnrecPtr      sbg = OSG::SolidBackground::create();

    gbg->addLine(OSG::Color3f(0.7f, 0.7f, 0.8f), 0);
    gbg->addLine(OSG::Color3f(0.0f, 0.1f, 0.3f), 1);

    rootNode->setCore(svp);

    rootNode->addChild(light1);
    rootNode->addChild(light1_beacon);
    rootNode->addChild(light2_beacon);
    rootNode->addChild(cam_beacon);

    // Shadow viewport
#ifdef SHADOW_CHECK
    svp->setBackground(gbg);
    svp->setRoot(rootNode);
    svp->setSize(0, 0, 1, 1);
#endif
    //svp->setOffFactor(4.0);
    //svp->setOffBias(8.0);
    //used to set global shadow intensity, ignores shadow intensity from light sources if != 0.0
    //svp->setGlobalShadowIntensity(0.8);
    svp->setMapSize(1024);
    //ShadowSmoothness used for PCF_SHADOW_MAP and VARIANCE_SHADOW_MAP, defines Filter Width. Range can be 0.0 ... 1.0.
    //ShadowSmoothness also used to define the light size for PCSS_SHADOW_MAP
    svp->setShadowSmoothness(0.5);
    // add light sources here
    //svp->editMFLightNodes  ()->push_back(light1);
    //svp->editMFLightNodes  ()->push_back(light2);
    svp->editMFExcludeNodes()->push_back(obj1_trans_node);
    svp->setAutoSearchForLights(true);

    //one active light at startup
    _light2_core->setOn(true);
    _light2_core->setAmbient(0.3f, 0.3f, 0.3f, 1);
    _light2_core->setDiffuse(0.8f, 0.8f, 0.8f, 1);

    _light1_core->setOn(false);
    _light1_core->setAmbient(0.3, 0.3, 0.3, 1);
    _light1_core->setDiffuse(0.8, 0.8, 0.8, 1);

    gwin->setGlutId(winid);
#ifdef SHADOW_CHECK
    gwin->addPort(svp);
#endif

    gwin->init();

    OSG::Vec3f                   min, max;
    rootNode->updateVolume();
    rootNode->getVolume().getBounds(min, max);

    // create the SimpleSceneManager helper
    mgr = OSG::SimpleSceneManager::create();

    mgr->setWindow(gwin);
    mgr->setCamera(Pcamera);
    mgr->setRoot(rootNode);

    _navigator.setMode(OSG::Navigator::TRACKBALL);

#ifdef SHADOW_CHECK
    _navigator.setViewport(svp);
#endif
    _navigator.setCameraTransformation(cam_beacon);


    OSG::Vec3f                   up(0,1,0);
    OSG::Pnt3f                   at(0,0,0);
    OSG::Pnt3f                   from(0.0f,-100.1f,20.0f);

    _navigator.set(from, at, up);

    _navigator.setMotionFactor(0.5f);


#ifdef SHADOW_CHECK
    svp->setCamera(Pcamera);
#endif

    //activate Framecounter
    startFpsCounter();

//    dynamic_cast<RenderAction *>(mgr->getAction())->setLocalLights(true);
    mgr->turnHeadlightOff();

    mgr->showAll();

    mgr->getCamera()->setNear(      1.0f);
    mgr->getCamera()->setFar (1000000.f );

    _navigator.setViewport(gwin->getPort(0));

    return 0;
}
Example #13
0
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // open a new scope, because the pointers below should go out of scope
    // before entering glutMainLoop.
    // Otherwise OpenSG will complain about objects being alive after shutdown.
    {
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        // The scene group
        
        OSG::NodeRefPtr  scene = OSG::Node::create();
        OSG::GroupRefPtr g     = OSG::Group::create();
        
        scene->setCore(g);
        
        if(argc < 2)
        {
            FWARNING(("No file given!\n"));
            FWARNING(("Supported file formats:\n"));
            
            std::list<const char*> suffixes;
            OSG::SceneFileHandler::the()->getSuffixList(suffixes);
            
            for(std::list<const char*>::iterator it  = suffixes.begin();
                                                 it != suffixes.end();
                                               ++it)
            {
                FWARNING(("%s\n", *it));
            }
    
            fileroot = OSG::makeTorus(.5, 2, 16, 16);
        }
        else
        {
            fileroot = OSG::SceneFileHandler::the()->read(argv[1]);
            /*
                All scene file loading is handled via the SceneFileHandler.
            */
        }
    
        scene->addChild(fileroot);
        
        // Create a small geometry to show the ray and what was hit
        // Contains a line and a single triangle.
        // The line shows the ray, the triangle whatever was hit.
        
        OSG::SimpleMaterialRefPtr red = OSG::SimpleMaterial::create();
        
        red->setDiffuse     (OSG::Color3f( 1,0,0 ));   
        red->setTransparency(0.5);   
        red->setLit         (false);   
    
        isectPoints = OSG::GeoPnt3fProperty::create();
        isectPoints->addValue(OSG::Pnt3f(0,0,0));
        isectPoints->addValue(OSG::Pnt3f(0,0,0));
        isectPoints->addValue(OSG::Pnt3f(0,0,0));
        isectPoints->addValue(OSG::Pnt3f(0,0,0));
        isectPoints->addValue(OSG::Pnt3f(0,0,0));
    
        OSG::GeoUInt32PropertyRefPtr index = OSG::GeoUInt32Property::create();
        index->addValue(0);
        index->addValue(1);
        index->addValue(2);
        index->addValue(3);
        index->addValue(4);
    
        OSG::GeoUInt32PropertyRefPtr lens = OSG::GeoUInt32Property::create();
        lens->addValue(2);
        lens->addValue(3);
        
        OSG::GeoUInt8PropertyRefPtr type = OSG::GeoUInt8Property::create();
        type->addValue(GL_LINES);
        type->addValue(GL_TRIANGLES);
    
        testgeocore = OSG::Geometry::create();
        testgeocore->setPositions(isectPoints);
        testgeocore->setIndices(index);
        testgeocore->setLengths(lens);
        testgeocore->setTypes(type);
        testgeocore->setMaterial(red);
        
        OSG::NodeRefPtr testgeo = OSG::Node::create();
        testgeo->setCore(testgeocore);
        
        scene->addChild(testgeo);
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
    
        // tell the manager what to manage
        mgr->setWindow(gwin );
        mgr->setRoot  (scene);
    
        // show the whole scene
        mgr->showAll();
    
        mgr->getCamera()->setNear(mgr->getCamera()->getNear() / 10);
    
        // Show the bounding volumes? Not for now
        mgr->getRenderAction()->setVolumeDrawing(false);
    
        _idbuff = new IDbuffer();
        _idbuff->setCamera(mgr->getCamera());
        _idbuff->setRoot(scene);
    }
    
    // GLUT main loop
    glutMainLoop();

    return 0;
}
int doMain(int argc, char **argv)
{
    //
    // This might be necessary depending on the
    // used platform to ensure that the corresponding
    // libraries get loaded.
    //
    OSG::preloadSharedObject("OSGFileIO");
    OSG::preloadSharedObject("OSGImageFileIO");
    OSG::preloadSharedObject("OSGContribPLY");

    OSG::osgInit(argc,argv);

    // GLUT init
    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_STENCIL | GLUT_DOUBLE);

    glutCreateWindow("OpenSG");

    glutReshapeFunc(reshape);
    glutDisplayFunc(display);
    glutIdleFunc(display);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);

    OSG::PassiveWindowRefPtr pwin=OSG::PassiveWindow::create();
    pwin->init();

    // create the SimpleSceneManager helper
    mgr = OSG::SimpleSceneManager::create();

    // create the window and initial camera/viewport
    mgr->setWindow(pwin);

    //
    // for storing clipplane beacon we use a container
    // collection attachment which we attach to the scene
    // node. Otherwise the scene could not be saved correctly,
    // as the beacons would be lost.
    //
    container = OSG::ContainerCollection::create();

    //
    // Implementation details:
    //      For each clip plane we provide a ClipPlaneChunk, the plane geometry,
    //      the plane transform core and at least a plane color conveniently in
    //      a vector of type VecClipPlaneDetailsT. The next function call
    //      initializes this data structure.
    //
    createClipPlaneDetails();

    //
    // The scene
    //
    scene = OSG::Node::create();
    scene->setCore(OSG::Group::create());
    scene->addAttachment(container);

    //
    // A place for accessing the box and torus.
    //
    vecGeometries.push_back(NULL);
    vecGeometries.push_back(NULL);

    //
    // Build concrete clipping planes and update the clip plane details.
    //
    ClipPlaneData data1;
    ClipPlaneData data2;

    data1._equation = OSG::Vec4f(0,0,1,0);
    data1._enabled  = true;

    data2._equation = OSG::Vec4f(1,0,0,0);
    data2._enabled  = false;

    vecClipPlaneData.push_back(data1);
    vecClipPlaneData.push_back(data2);

    updateClipPlanes(vecClipPlaneData);

    keyboard('3',-1,-1);
    keyboard('4',-1,-1);

    // tell the manager what to manage
    mgr->setRoot(scene);

    // show the whole scene
    mgr->showAll();
    mgr->redraw();

    pwin->dumpExtensions();

    return 0;
}
Example #15
0
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // Args given?
    if(argc > 1)
    {
        if(sscanf(argv[1], "%u", &nlights) != 1)
        {
            FWARNING(("Number of lights '%s' not understood.\n", argv[1]));
            nlights = 3;
        }
    }
    
    // open a new scope, because the pointers below should go out of scope
    // before entering glutMainLoop.
    // Otherwise OpenSG will complain about objects being alive after shutdown.
    {
    
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();
        gwin->setGlutId(winid);
        gwin->init();
    
        /*
            A Light defines a source of light in the scene. Generally, two types
            of information are of interest: The position of the light source
            (geometry), and what elements of the scene are lit (semantics). 
    
            Using the position of the light in the graph for geometry allows
            moving the Light just like any other node, by putting it below a
            OSG::Transform Node and changing the transformation. This consistency
            also simplifies attaching Lights to moving parts in the scene: just
            put them below the same Transform and they will move with the object.
    
            The semantic interpretation also makes sense, it lets you restrict the
            influence area of the light to a subgraph of the scene. This can be
            used for efficiency, as every active light increases the amount of
            calculations necessary per vertex, even if the light doesn't influence
            the vertex, because it is too far away. It can also be used to
            overcome the restrictions on the number of lights. OpenSG currently
            only allows 8 concurrently active lights.
    
            It is also not difficult to imagine situations where both
            interpretations are necessary at the same time. Take for example a car
            driving through a night scene. You'd want to headlights to be fixed to
            the car and move together with it. But at the same time they should
            light the houses you're driving by, and not the mountains in the
            distance. 
    
            Thus there should be a way to do both at the same time. OpenSG solves
            this by splitting the two tasks to two Nodes. The Light's Node is for
            the sematntic part, it defines which object are lit by the Light. FOr
            the geometrc part the Light keeps a SFNodePtr to a different Node, the
            so called beacon. The local coordinate system of the beacon provides
            the reference coordinate system for the light's position.
    
    
            Thus the typical setup of an OpenSG scenegraph starts with a set of
            lights, which light the whole scene, followed by the actual geometry.
    
            Tip: Using the beacon of the camera (see \ref PageSystemWindowCamera)
            as the beacon of a light source creates a headlight.


            Every light is closely related to OpenGL's light specification. It has
            a diffuse, specular and ambient color. Additionally it can be switched
            on and off using the on field.
        */
    
    
        // Create the scene 
        
        OSG::NodeRefPtr  scene = OSG::Node::create();
        OSG::GroupRefPtr group = OSG::Group::create();
        scene->setCore(group);
    
        // create the scene to be lit
    
        // a simple torus is fine for now.
        // You can add more Geometry here if you want to.
        OSG::NodeRefPtr lit_scene = OSG::makeTorus(.5, 2, 32, 64);
    
        // helper node to keep the lights on top of each other
        OSG::NodeRefPtr lastnode = lit_scene;
    
        // create the light sources    
        OSG::Color3f colors[] = 
        {
            OSG::Color3f(1,0,0), OSG::Color3f(0,1,0), OSG::Color3f(0,0,1), 
            OSG::Color3f(1,1,0), OSG::Color3f(0,1,1), OSG::Color3f(1,0,1), 
            OSG::Color3f(1,1,1), OSG::Color3f(1,1,1)
        };
        if(nlights > 8)
        {
            FWARNING(("Currently only 8 lights supported\n"));
            nlights = 8;
        }
        
        // scale the lights to not overexpose everything. Just a little.
        OSG::Real32 scale = OSG::osgMax(1., 1.5 / nlights);
        
        for(OSG::UInt16 i = 0; i < nlights; ++i)
        {        
            // create the light source
            OSG::NodeRefPtr     light = OSG::Node::create();
            OSG::LightRefPtr    light_core;
            OSG::NodeRefPtr     geo_node;
            
            switch((i % 3) + 0)
            {
                /*
                    The PointLight has a position to define its location. In
                    addition, as it really is located in the scene, it has
                    attenuation parameters to change the light's intensity
                    depending on the distance to the light.
    
                    Point lights are more expesinve to compute than directional
                    lights, but not quite as expesive as spot lights. If you need
                    to see the localized effects of the light, a point light is a
                    good compromise between speed and quality.
                */
                case 0:
                {
                    OSG::PointLightRefPtr l = OSG::PointLight::create();
                    
                    l->setPosition             (0, 0, 0);
                    l->setConstantAttenuation  (1);
                    l->setLinearAttenuation    (0);
                    l->setQuadraticAttenuation (3);
                    
                    // a little sphere to show where the light is
                    geo_node = OSG::makeLatLongSphere(8, 8, 0.1f);
    
                    OSG::GeometryRefPtr       geo =
                        dynamic_cast<OSG::Geometry *>(geo_node->getCore());
                    OSG::SimpleMaterialRefPtr sm  = 
                        OSG::SimpleMaterial::create();
    
                    sm->setLit(false);
                    sm->setDiffuse(OSG::Color3f( colors[i][0], 
                                                 colors[i][1],
                                                 colors[i][2] ));
    
                    geo->setMaterial(sm);
    
                    light_core = l;
                }
                break;
                
                
                /*
                    The DirectionalLight just has a direction. 
    
                    To use it as a headlight use (0,0,-1) as a direction. it is
                    the computationally cheapest light source. Thus for the
                    fastest lit rendering, just a single directional light source.
                    The osg::SimpleSceneManager's headlight is a directional light
                    source.
    
                */
                case 1:
                {
                    OSG::DirectionalLightRefPtr l = 
                        OSG::DirectionalLight::create();
                    
                    l->setDirection(0, 0, 1);
                    
                    // a little cylinder to show where the light is
                    geo_node = OSG::makeCylinder(.1f, .03f, 8, true, true, true);
    
                    OSG::GeometryRefPtr       geo =
                        dynamic_cast<OSG::Geometry *>(geo_node->getCore());
                    OSG::SimpleMaterialRefPtr sm  = 
                        OSG::SimpleMaterial::create();
    
                    sm->setLit(false);
                    sm->setDiffuse(OSG::Color3f( colors[i][0], 
                                                 colors[i][1],
                                                 colors[i][2] ));
    
                    geo->setMaterial(sm);
    
                    light_core = l;
                }
                break;
                
                /*
                    The SpotLight adds a direction to the PointLight and a
                    spotCutOff angle to define the area that's lit. To define the
                    light intensity fallof within that area the spotExponent field
                    is used.
    
                    Spot lights are very expensive to compute, use them sparingly.
                */
                case 2:
                {
                    OSG::SpotLightRefPtr l = OSG::SpotLight::create();
                    
                    l->setPosition             (OSG::Pnt3f(0,  0, 0));
                    l->setDirection            (OSG::Vec3f(0, -1, 0));
                    l->setSpotExponent         (2);
                    l->setSpotCutOff           (OSG::osgDegree2Rad(45));
                    l->setConstantAttenuation  (1);
                    l->setLinearAttenuation    (0);
                    l->setQuadraticAttenuation (3);
                    
                    // a little cone to show where the light is
                    geo_node = OSG::makeCone(.2f, .2f, 8, true, true);
    
                    OSG::GeometryRefPtr       geo =
                        dynamic_cast<OSG::Geometry *>(geo_node->getCore());
                    OSG::SimpleMaterialRefPtr sm  = 
                        OSG::SimpleMaterial::create();
    
                    sm->setLit(false);
                    sm->setDiffuse(OSG::Color3f( colors[i][0], 
                                                 colors[i][1],
                                                 colors[i][2] ));
    
                    geo->setMaterial(sm);
    
                    light_core = l;
                }
                break;
            }
            
            // create the beacon and attach it to the scene
            OSG::NodeRefPtr         beacon      = OSG::Node::create();
            OSG::TransformRefPtr    beacon_core = OSG::Transform::create();
            
            lightBeacons[i] = beacon_core;
            
            beacon->setCore(beacon_core);
            beacon->addChild(geo_node);
        
            scene->addChild(beacon);
                
            light_core->setAmbient (colors[i][0] / scale,
                                    colors[i][1] / scale,
                                    colors[i][2] / scale,
                                    1);
            light_core->setDiffuse (colors[i][0] / scale,
                                    colors[i][1] / scale,
                                    colors[i][2] / scale,
                                    1);
            light_core->setSpecular(1 / scale,
                                    1 / scale,
                                    1 / scale,
                                    1);
            light_core->setBeacon  (beacon);
    
            light->setCore(light_core);
            light->addChild(lastnode);
            
            lights[i] = light_core;
            lastnode = light;
        }
    
        scene->addChild(lastnode);
    
        OSG::commitChanges();
    
        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();
    
        // tell the manager what to manage
        mgr->setWindow(gwin );
        mgr->setRoot  (scene);
        
        // switch the headlight off, we have enough lights as is
        mgr->setHeadlight(false);
    
        // show the whole scene
        mgr->showAll();
    }
    
    // GLUT main loop
    glutMainLoop();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    printf("Usage: testCGShader <filename.vp> <filename.fp>\n");

    if( argc < 3 )
        return 0;
    
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin= OSG::GLUTWindow::create();
    gwin->setGlutId(winid);
    gwin->setSize( 800, 800 );
    gwin->init();

    // Create the shader material
    OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();

    OSG::MaterialChunkUnrecPtr matc = OSG::MaterialChunk::create();

    matc->setAmbient(OSG::Color4f(0.1, 0.1, 0.1, 1.0));
    matc->setDiffuse(OSG::Color4f(0.3, 0.3, 0.3, 1.0));
    matc->setSpecular(OSG::Color4f(0.8, 0.8, 0.8, 1.0));
    matc->setShininess(100);
    matc->setLit(true);

    OSG::SHLChunkUnrecPtr shl = OSG::SHLChunk::create();

    shl->readVertexProgram(argv[1]);
    shl->readFragmentProgram(argv[2]);

    cmat->addChunk(shl);


    // create root node
    _scene = OSG::Node::create();

    // create torus
    OSG::GeometryUnrecPtr geo = OSG::makeTorusGeo(.8, 1.8, 128, 128);
    geo->setMaterial(cmat);

    OSG::NodeUnrecPtr torus = OSG::Node::create();
    torus->setCore(geo);

    // add torus to scene
    OSG::GroupUnrecPtr group = OSG::Group::create();
    _scene->setCore(group);
    _scene->addChild(torus);

    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(gwin );
    _mgr->setRoot(_scene);

    /*
    // create point headlight
    _mgr->turnHeadlightOff();
    NodePtr headlight = _mgr->getHighlight();
    PointLightPtr light    = PointLight::create();
    beginEditCP(light);
        light->setAmbient  (.3, .3, .3, 1);
        light->setDiffuse  ( 1,  1,  1, 1);
        light->setSpecular ( 1,  1,  1, 1);
        light->setBeacon   (_mgr->getCamera()->getBeacon());
    endEditCP(light);
    beginEditCP(_scene);
        _scene->setCore(light);
    endEditCP(_scene);
    */

    // show the whole scene
    _mgr->showAll();

    // GLUT main loop
    glutMainLoop();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin= OSG::GLUTWindow::create();
    gwin->setGlutId(winid);
    gwin->setSize( 800, 800 );
    gwin->init();

    // Create the shader material
    OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();

    // Read the image for the normal texture
    OSG::ImageUnrecPtr earth_map_img = OSG::Image::create();
    if(!earth_map_img->read("Earth.jpg"))
    {
        fprintf(stderr, "Couldn't read texture 'Earth.jpg'\n");
        return 1;
    }
    OSG::TextureObjChunkUnrecPtr tex_earth     = OSG::TextureObjChunk::create();
    OSG::TextureEnvChunkUnrecPtr tex_earth_env = OSG::TextureEnvChunk::create();

    tex_earth->setImage(earth_map_img);
    tex_earth->setMinFilter(GL_LINEAR_MIPMAP_LINEAR);
    tex_earth->setMagFilter(GL_LINEAR);
    tex_earth->setWrapS(GL_REPEAT);
    tex_earth->setWrapT(GL_REPEAT);

    tex_earth_env->setEnvMode(GL_MODULATE);

    // Read the image for the normal texture
    OSG::ImageUnrecPtr earth_night_map_img = OSG::Image::create();
    if(!earth_night_map_img->read("EarthNight.jpg"))
    {
        fprintf(stderr, "Couldn't read texture 'EarthNight.jpg'\n");
        return 1;
    }

    OSG::TextureObjChunkUnrecPtr tex_earth_night     = 
        OSG::TextureObjChunk::create();
    OSG::TextureEnvChunkUnrecPtr tex_earth_night_env = 
        OSG::TextureEnvChunk::create();

    tex_earth_night->setImage(earth_night_map_img);
    tex_earth_night->setMinFilter(GL_LINEAR_MIPMAP_LINEAR);
    tex_earth_night->setMagFilter(GL_LINEAR);
    tex_earth_night->setWrapS(GL_REPEAT);
    tex_earth_night->setWrapT(GL_REPEAT);

    tex_earth_night_env->setEnvMode(GL_MODULATE);
    
    // Read the image for the normal texture
    OSG::ImageUnrecPtr earth_clouds_map_img = OSG::Image::create();
    if(!earth_clouds_map_img->read("EarthClouds.jpg"))
    {
        fprintf(stderr, "Couldn't read texture 'EarthClouds.jpg'\n");
        return 1;
    }

    OSG::TextureObjChunkUnrecPtr tex_earth_clouds     = 
        OSG::TextureObjChunk::create();
    OSG::TextureEnvChunkUnrecPtr tex_earth_clouds_env = 
        OSG::TextureEnvChunk::create();

    tex_earth_clouds->setImage(earth_clouds_map_img);
    tex_earth_clouds->setMinFilter(GL_LINEAR_MIPMAP_LINEAR);
    tex_earth_clouds->setMagFilter(GL_LINEAR);
    tex_earth_clouds->setWrapS(GL_REPEAT);
    tex_earth_clouds->setWrapT(GL_REPEAT);

    tex_earth_clouds_env->setEnvMode(GL_MODULATE);


    _shl = OSG::ShaderProgramChunk::create();

    _shl_vp = OSG::ShaderProgram::create();
    _shl_fp = OSG::ShaderProgram::create();
    
    if(!_shl_vp->readProgram("Earth.vp"))
        fprintf(stderr, "Couldn't read vertex program 'Earth.vp'\n");
    if(!_shl_fp->readProgram("Earth.fp"))
        fprintf(stderr, "Couldn't read fragment program 'Earth.fp'\n");

    _shl_vp->setShaderType(GL_VERTEX_SHADER);
    _shl_fp->setShaderType(GL_FRAGMENT_SHADER);

    _shl->addVertexShader  (_shl_vp);
    _shl->addFragmentShader(_shl_fp);

    _shl_fp->addUniformVariable("EarthDay", 0);
    _shl_fp->addUniformVariable("EarthNight", 1);
    _shl_fp->addUniformVariable("EarthCloudGloss", 2);

    _shl_vp->addUniformVariable("season", 0.0f);
    _shl_vp->addUniformVariable("cos_time_0_2PI", -0.406652f);
    _shl_vp->addUniformVariable("sin_time_0_2PI", -0.913583f);
//    _shl->setUniformParameter("foo", -0.913583f);

    
    cmat->addChunk(_shl);
    cmat->addChunk(tex_earth);
    cmat->addChunk(tex_earth_env);
    cmat->addChunk(tex_earth_night);
    cmat->addChunk(tex_earth_night_env);
    cmat->addChunk(tex_earth_clouds);
    cmat->addChunk(tex_earth_clouds_env);


    // create root node
    _scene = OSG::Node::create();

    OSG::GeometryUnrecPtr geo = OSG::makeLatLongSphereGeo (100, 100, 1.0);

    geo->setMaterial(cmat);


    OSG::NodeUnrecPtr torus = OSG::Node::create();
    
    torus->setCore(geo);


    // add torus to scene
    OSG::GroupUnrecPtr group = OSG::Group::create();

    _scene->setCore(group);
    _scene->addChild(torus);


    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(gwin );
    _mgr->setRoot(_scene);

    // show the whole scene
    _mgr->showAll();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin = OSG::GLUTWindow::create();
    gwin->setGlutId(winid);
    gwin->setSize( 800, 800 );
    gwin->init();

    // Create the shader material
    OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();

    OSG::SHLChunkUnrecPtr shl = OSG::SHLChunk::create();

    shl->setProgramParameter(GL_GEOMETRY_INPUT_TYPE_EXT, 
                             GL_TRIANGLES);
    shl->setProgramParameter(GL_GEOMETRY_OUTPUT_TYPE_EXT, 
                             GL_TRIANGLE_STRIP);
    shl->setProgramParameter(GL_GEOMETRY_VERTICES_OUT_EXT, 6);

    shl->setVertexProgram(_vertex_shader);
    shl->setFragmentProgram(_fragment_shader);
    shl->setGeometryProgram(_geometry_shader);

    cmat->addChunk(shl);

    // create root node
    _scene = OSG::Node::create();

    // create torus
    OSG::GeometryUnrecPtr geo = OSG::makeTorusGeo(.8, 1.8, 128, 128);

    geo->setMaterial(cmat);

    OSG::NodeUnrecPtr torus = OSG::Node::create();

    torus->setCore(geo);

    // add torus to scene
    OSG::GroupUnrecPtr group = OSG::Group::create();

    _scene->setCore(group);
    _scene->addChild(torus);

    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(gwin );
    _mgr->setRoot(_scene);

    // show the whole scene
    _mgr->showAll();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
    printf("Press key '1', '2', or '3' to toggle the light sources.\n");
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin= OSG::GLUTWindow::create();

    gwin->setGlutId(winid);
    gwin->setSize( 800, 800 );
    gwin->init();

    // Create the shader material

    OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();

    OSG::MaterialChunkUnrecPtr matc = OSG::MaterialChunk::create();

    matc->setAmbient(OSG::Color4f(0.1f, 0.1f, 0.1f, 1.0f));
    matc->setDiffuse(OSG::Color4f(0.3f, 0.3f, 0.3f, 1.0f));
    matc->setSpecular(OSG::Color4f(0.8f, 0.8f, 0.8f, 1.0f));
    matc->setShininess(100);
    matc->setLit(true);

    OSG::ShaderProgramChunkUnrecPtr shl = OSG::ShaderProgramChunk::create();

    OSG::ShaderProgramUnrecPtr shl_vp = 
        OSG::ShaderProgram::createVertexShader();

    shl_vp->setProgram(_vp_program);

    shl->addShader(shl_vp);

    OSG::ShaderProgramUnrecPtr shl_fp = 
        OSG::ShaderProgram::createFragmentShader();

    shl_fp->setProgram(_fp_program);

    shl->addShader(shl_fp);

    shl_vp->addProceduralVariable    ("Light0Active", &light0Active);
    shl_vp->addProceduralVariable    ("Light1Active", &light1Active);
    shl_vp->addNodeProceduralVariable("Light2Active", &light2Active);

    cmat->addChunk(matc);
    cmat->addChunk(shl);

    // create root node
    _scene = OSG::Node::create();

    // create two light sources.

    OSG::TransformUnrecPtr point1_trans;

    OSG::NodeUnrecPtr point1        = 
        OSG::makeCoredNode<OSG::PointLight>(&_point1_core);
    point1_beacon = OSG::makeCoredNode<OSG::Transform >(&point1_trans);

    point1_trans->editMatrix().setTranslate(-10.0, 5.0, 5.0);

    _point1_core->setAmbient(0.0f, 0.0f, 0.0f , 1.0f);
    _point1_core->setDiffuse(1.0f, 0.0f, 0.0f, 1.0f);
    _point1_core->setSpecular(1.0f, 1.0f, 1.0f, 1.0f);
    _point1_core->setBeacon(point1_beacon);
    _point1_core->setOn(true);


    OSG::TransformUnrecPtr point2_trans;

    OSG::NodeUnrecPtr point2        =
        OSG::makeCoredNode<OSG::PointLight>(&_point2_core);
    point2_beacon = OSG::makeCoredNode<OSG::Transform >(&point2_trans);

    point2_trans->editMatrix().setTranslate(10.0, 5.0, 5.0);

    _point2_core->setAmbient(0.0f, 0.0f, 0.0f, 1.0f);
    _point2_core->setDiffuse(0.0f, 1.0f, 0.0f, 1.0f);
    _point2_core->setSpecular(1.0f, 1.0f, 1.0f, 1.0f);
    _point2_core->setBeacon(point2_beacon);
    _point2_core->setOn(true);

    point1->addChild(point2);
    
    OSG::TransformUnrecPtr point3_trans;

    OSG::NodeUnrecPtr point3        = 
        OSG::makeCoredNode<OSG::PointLight>(&_point3_core);
    
    point3_beacon = OSG::makeCoredNode<OSG::Transform >(&point3_trans);

    point3_trans->editMatrix().setTranslate(0.0, -12.0, 5.0);

    _point3_core->setAmbient(0.0f, 0.0f, 0.0f, 1.0f);
    _point3_core->setDiffuse(0.5f, 0.0f, 1.0f, 1.0f);
    _point3_core->setSpecular(1.0f, 1.0f, 1.0f, 1.0f);
    _point3_core->setBeacon(point3_beacon);
    _point3_core->setOn(true);

    point2->addChild(point3);


    // create a sphere.
    OSG::GeometryUnrecPtr geo = OSG::makeLatLongSphereGeo (100, 100, 1.0);

    geo->setMaterial(cmat);


    OSG::NodeUnrecPtr sphere = OSG::makeNodeFor(geo);

    point3->addChild(sphere);


    _scene->setCore(OSG::Group::create());
    _scene->addChild(point1);

    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(gwin );
    _mgr->setRoot(_scene);

    _mgr->turnHeadlightOff();

    // show the whole scene
    _mgr->showAll();

    // enable local lights.
//    OSG::RenderAction *ract = 
//        dynamic_cast<OSG::RenderAction *>(_mgr->getRenderAction());

//    ract->setLocalLights(true);

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    printf("Usage: testCGShader [normal map filename]\n");
    const char *normal_map_img_name = "opensg_logoDOT3.png";

    OSG::Color4f tmp;

    if( argc > 1 )
        normal_map_img_name = argv[1];

    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin = OSG::GLUTWindow::create();
    gwin->setGlutId(winid);
    gwin->setSize( 800, 800 );
    gwin->init();

    // Create the shader material

    // Read the image for the normal texture
    OSG::ImageUnrecPtr normal_map_img = OSG::Image::create();
    if(!normal_map_img->read(normal_map_img_name))
    {
        fprintf(stderr, "Couldn't read normalmap texture '%s'!\n", normal_map_img_name);
        return 1;
    }

    OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();

    OSG::MaterialChunkUnrecPtr matc = OSG::MaterialChunk::create();

    matc->setAmbient(OSG::Color4f(0.1, 0.1, 0.1, 1.0));
    matc->setDiffuse(OSG::Color4f(0.3, 0.3, 0.3, 1.0));
    matc->setSpecular(OSG::Color4f(0.8, 0.8, 0.8, 1.0));
    matc->setShininess(100);
    matc->setLit(true);

    OSG::SHLChunkUnrecPtr shl = OSG::SHLChunk::create();

    shl->setVertexProgram(_vp_program);
    shl->setFragmentProgram(_fp_program);

    OSG::TextureObjChunkUnrecPtr tex_normal_map     = OSG::TextureObjChunk::create();
    OSG::TextureEnvChunkUnrecPtr tex_normal_map_env = OSG::TextureEnvChunk::create();

    tex_normal_map->setImage(normal_map_img);
    tex_normal_map->setMinFilter(GL_LINEAR_MIPMAP_LINEAR);
    tex_normal_map->setMagFilter(GL_LINEAR);
    tex_normal_map->setWrapS(GL_REPEAT);
    tex_normal_map->setWrapT(GL_REPEAT);
    tex_normal_map_env->setEnvMode(GL_MODULATE);

        //cmat->addChunk(matc);
    cmat->addChunk(shl);
    cmat->addChunk(tex_normal_map);
    cmat->addChunk(tex_normal_map_env);


    // create root node
    _scene = OSG::Node::create();

    // create geometry
    //GeometryPtr geo = makeLatLongSphereGeo (100, 100, 1.0);
    OSG::GeometryUnrecPtr geo = OSG::makePlaneGeo(1.0, 1.0, 100, 100);

    geo->setMaterial(cmat);

    OSG::NodeUnrecPtr torus = OSG::Node::create();
    torus->setCore(geo);

    // add torus to scene
    OSG::GroupUnrecPtr group = OSG::Group::create();

    _scene->setCore(group);
    _scene->addChild(torus);

    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(gwin );
    _mgr->setRoot(_scene);

    /*
    // create point headlight
    _mgr->turnHeadlightOff();
    NodePtr headlight = _mgr->getHighlight();
    PointLightPtr light    = PointLight::create();
    beginEditCP(light);
        light->setAmbient  (.3, .3, .3, 1);
        light->setDiffuse  ( 1,  1,  1, 1);
        light->setSpecular ( 1,  1,  1, 1);
        light->setBeacon   (_mgr->getCamera()->getBeacon());
    endEditCP(light);
    beginEditCP(_scene);
        _scene->setCore(light);
    endEditCP(_scene);
    */

    // show the whole scene
    _mgr->showAll();

    // GLUT main loop
    glutMainLoop();

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int doMain(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    // the connection between GLUT and OpenSG
    OSG::GLUTWindowUnrecPtr gwin = OSG::GLUTWindow::create();

    gwin->setGlutId(winid);
    gwin->setSize( 800, 800 );
    gwin->init();

    // create root node
    _scene = OSG::makeCoredNode<OSG::Group>();

    OSG::GeometryUnrecPtr geo = OSG::makeBoxGeo(0.5, 0.5, 0.5, 1, 1, 1);

    // share the chunk
    OSG::SimpleSHLChunkUnrecPtr shl = OSG::SimpleSHLChunk::create();

    shl->setVertexProgram(_vp_program);
    shl->setFragmentProgram(_fp_program);
    // These parameters are the same for all geometries so we
    // keep them in here.
    shl->addUniformVariable("Scale", OSG::Vec2f(20.0f, 20.0f));
    shl->addUniformVariable("Threshold", OSG::Vec2f(0.7f, 0.7f));

    OSG::Int32 size = 4;

    // start color
    OSG::Vec3f sc(0.0, 0.0, 0.0);

    // end color
    OSG::Vec3f ec(1.0, 1.0, 1.0);

    OSG::Real32 sr = (ec[0] - sc[0]) / OSG::Real32((size*2));
    OSG::Real32 sg = (ec[1] - sc[1]) / OSG::Real32((size*2));
    OSG::Real32 sb = (ec[2] - sc[2]) / OSG::Real32((size*2));

    OSG::Vec3f color(sc);

    OSG::Int32 x = - size;
    OSG::Int32 y = - size;
    OSG::Int32 z = - size;

    OSG::UInt32 iterations = size*2 * size*2 * size*2;

    printf("Creating %u cubes ...\n", iterations);
    for(OSG::UInt32 i=0; i<iterations; ++i)
    {
        OSG::ChunkMaterialUnrecPtr cmat = OSG::ChunkMaterial::create();

        // ok use one SHLChunk and n SHLParameterChunks
        // Assing a different "SurfaceColor" parameter to each geometry.
        OSG::SimpleSHLVariableChunkUnrecPtr shlparameter =
            OSG::SimpleSHLVariableChunk::create();

//        shlparameter->setSHLChunk(shl);
        shlparameter->addUniformVariable("SurfaceColor", color);

        _shlparameter = shlparameter;

        cmat->addChunk(shl);
        cmat->addChunk(shlparameter);

        OSG::TransformUnrecPtr trans;
        OSG::NodeUnrecPtr trans_node =
            OSG::makeCoredNode<OSG::Transform>(&trans);

        trans->editMatrix().setTranslate(OSG::Real32(x),
                                         OSG::Real32(y),
                                         OSG::Real32(z));

        OSG::MaterialGroupUnrecPtr mg;

        OSG::NodeUnrecPtr mg_node = OSG::makeCoredNode<OSG::MaterialGroup>(&mg);

        mg->setMaterial(cmat);

        OSG::NodeUnrecPtr geonode = OSG::Node::create();

        geonode->setCore(geo);

        mg_node->addChild(geonode);

        trans_node->addChild(mg_node);

        // add to scene
        _scene->addChild(trans_node);

        // ----
        ++x;
        color[0] += sr;

        if(x == size)
        {
            x = - size;
            ++y;
            color[0] = sc[0];
            color[1] += sg;
            if(y == size)
            {
                y = - size;
                ++z;
                color[1] = sc[1];
                color[2] += sb;
            }
        }
    }


    // create the SimpleSceneManager helper
    _mgr = OSG::SimpleSceneManager::create();

    // tell the manager what to manage
    _mgr->setWindow(gwin );
    _mgr->setRoot(_scene);

    // show the whole scene
    _mgr->showAll();

    // create a gradient background.
    OSG::GradientBackgroundUnrecPtr gback = OSG::GradientBackground::create();

    gback->clearLines();
    gback->addLine(OSG::Color3f(0.7f, 0.7f, 0.8f), 0);
    gback->addLine(OSG::Color3f(0.0f, 0.1f, 0.3f), 1);

    OSG::Window *win = _mgr->getWindow();

    for(unsigned int i=0; i<win->getMFPort()->size(); ++i)
    {
        OSG::Viewport *vp = win->getPort(i);
        vp->setBackground(gback);
    }

    return 0;
}
// Initialize GLUT & OpenSG and set up the scene
int main(int argc, char **argv)
{
    // OSG init
    OSG::osgInit(argc,argv);

    // GLUT init
    int winid = setupGLUT(&argc, argv);

    {
        // the connection between GLUT and OpenSG
        OSG::GLUTWindowRefPtr gwin = OSG::GLUTWindow::create();

        gwin->setGlutId(winid);
        gwin->init();

        // create the scene
        OSG::NodeRefPtr torus = OSG::makeTorus( .5, 2, 16, 32 );
        OSG::NodeRefPtr scene = OSG::Node::create();

        trans = OSG::Transform::create();

        scene->setCore(trans);
        scene->addChild(torus);

        // Create the parts needed for the video background
        OSG::UInt32 width  = 640;
        OSG::UInt32 height = 480;

        // get the desired size from the command line
        if(argc >= 3)
        {
            width  = atoi(argv[1]);
            height = atoi(argv[2]);
        }

        // To check OpenGL extensions, the Window needs to have run through
        // frameInit at least once. This automatically happens when rendering,
        // but we can't wait for that here.

        gwin->activate ();
        gwin->frameInit();

        // Now we can check for OpenGL extensions
        hasNPOT = gwin->hasExtension("GL_ARB_texture_non_power_of_two");

        // Print what we've got
        SLOG << "Got " << (isPOT?"":"non-") << "power-of-two images and "
            << (hasNPOT?"can":"cannot") << " use NPOT textures, changing "
            << (changeOnlyPart?"part":"all")
            << " of the screen"
            << std::endl;

        // Ok, now for the meat of the code...
        // first we need an Image to hold the picture(s) to show
        image = OSG::Image::create();

        // set the image's size and type, and allocate memory
        // this example uses RGB. On some systems (e.g. Windows) BGR
        // or BGRA might be faster, it depends on how the images are
        // acquired

        image->set(OSG::Image::OSG_RGB_PF, width, height);



        // Now create the texture to be used for the background
        texObj = OSG::TextureObjChunk::create();

        // Associate image and texture
        texObj->setImage(image);

        // Set filtering modes. LINEAR is cheap and good if the image size
        // changes very little (i.e. the window is about the same size as
        // the images).

        texObj->setMinFilter(GL_LINEAR);
        texObj->setMagFilter(GL_LINEAR);

        // Set the wrapping modes. We don't need repetition, it might actually
        // introduce artifactes at the borders, so switch it off.

        texObj->setWrapS(GL_CLAMP_TO_EDGE);
        texObj->setWrapT(GL_CLAMP_TO_EDGE);

        // Newer versions of OpenGL can handle NPOT textures directly.
        // OpenSG will do that internally automatically.
        //
        // Older versions need POT textures. By default OpenSG
        // will scale an NPOT texture to POT while defining it.
        // For changing textures that's too slow.
        // So tell OpenSG not to scale the image and adjust the texture
        // coordinates used by the TextureBackground (see below).

        texObj->setScale(false);

        // Create the background

        OSG::TextureBackgroundRefPtr back = OSG::TextureBackground::create();

        // Set the texture to use
        back->setTexture(texObj);

        // if the image is NPOT and we don't have hardware support for it
        // adjust the texture coordinates.
        if(isPOT == false && hasNPOT == false)
        {
            OSG::UInt32 potWidth  = OSG::osgNextPower2(width );
            OSG::UInt32 potHeight = OSG::osgNextPower2(height);

            OSG::Real32 tcRight = OSG::Real32(width ) / OSG::Real32(potWidth );
            OSG::Real32 tcTop   = OSG::Real32(height) / OSG::Real32(potHeight);

            back->editMFTexCoords()->push_back(OSG::Vec2f(    0.f,   0.f));
            back->editMFTexCoords()->push_back(OSG::Vec2f(tcRight,   0.f));
            back->editMFTexCoords()->push_back(OSG::Vec2f(tcRight, tcTop));
            back->editMFTexCoords()->push_back(OSG::Vec2f(    0.f, tcTop));
        }

        OSG::commitChanges();

        // create the SimpleSceneManager helper
        mgr = OSG::SimpleSceneManager::create();

        // tell the manager what to manage
        mgr->setWindow(gwin );
        mgr->setRoot  (scene);
        mgr->setStatistics(true);

        // replace the background
        // This has to be done after the viewport has been created, which the
        // SSM does in setRoot().

        OSG::ViewportRefPtr vp = gwin->getPort(0);

        vp->setBackground(back);
    }

    // show the whole scene
    mgr->showAll();

    // GLUT main loop
    glutMainLoop();

    return 0;

}