C++ SimpleSceneManagerRefPtr::getWindow方法代码示例

//
// transform vector from world space to eye space
//
OSG::Vec3f transform_to_eye_space(const OSG::Vec3f& v, OSG::SimpleSceneManager* pSSM)
{
    if (!pSSM || !pSSM->getWindow() || pSSM->getWindow()->getMFPort()->size() == 0)
        return v;

    OSG::Viewport* pPort = mgr->getWindow()->getPort(0);

    OSG::Vec3f v_es;

    OSG::Matrix view;
    OSG::Int16 width  = pPort->calcPixelWidth();
    OSG::Int16 height = pPort->calcPixelHeight();

    pPort->getCamera()->getViewing(view, width, height);

    view.multFull( v, v_es);

    return v_es;
}

//.........这里部分代码省略.........

    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;
}

// react to keys
void keyboard(unsigned char k, int x, int y)
{
    static OSG::Real32 season = 0.0f; 
    switch(k)
    {
        case 27:
        case 'q':
            
            _mgr    = NULL;
            _scene  = NULL; 
            _shl    = NULL;
            _shl_vp = NULL;
            _shl_fp = NULL;

            OSG::osgExit();
            exit(1);
        break;

        case 'c':
            _mgr->getWindow()->getShaderCache()->dump();
            break;

        case 'w':
            OSG::SceneFileHandler::the()->write(_scene, "scene.osb.gz", true);
            printf("wrote scene.osb.gz\n");
        break;
        case 's':
            if(season < 0.435)
                season += 0.01f;

            _shl_vp->updateUniformVariable("season", season);

        break;
        case 'S':
            if(season > -0.435)
                season -= 0.01f;

            _shl_vp->updateUniformVariable("season", season);
        break;
        case 'd':
            _animation = 1 - _animation;
        break;

        case 'b':
            if(!_shl_fp->readProgram("Earth.fp"))
                fprintf(stderr, "Couldn't read fragment program 'Earth.fp'\n");
            else
                fprintf(stderr, "blue loaded\n");
            break;
        case 'r':
            if(!_shl_fp->readProgram("Earth_red.fp"))
                fprintf(stderr, "Couldn't read fragment program 'Earth.fp'\n");
            else
                fprintf(stderr, "red loaded\n");
            break;

        case 'B':
            _shl_fp = OSG::ShaderProgram::create();

            _shl_fp->setShaderType(GL_FRAGMENT_SHADER);

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

            if(!_shl_fp->readProgram("Earth.fp"))
            {
                fprintf(stderr, "Couldn't read fragment program 'Earth.fp'\n");
            }
            else
            {
                _shl->subFragmentShader(0);
                _shl->addFragmentShader(_shl_fp);
                fprintf(stderr, "blue loaded\n");
            }
            break;

        case 'R':
            _shl_fp = OSG::ShaderProgram::create();

            _shl_fp->setShaderType(GL_FRAGMENT_SHADER);

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

            if(!_shl_fp->readProgram("Earth_red.fp"))
            {
                fprintf(stderr, "Couldn't read fragment program 'Earth.fp'\n");
            }
            else
            {
                _shl->subFragmentShader(0);
                _shl->addFragmentShader(_shl_fp);
                fprintf(stderr, "red loaded\n");
            }
            break;

        case 'A':
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        break;

        case 'P':
        {
            OSG::Real32 cover = tact->getScreenLODCoverageThreshold();
            cover+=0.001f;
            tact->setScreenLODCoverageThreshold(cover);
            std::cout << "ScreenLOD Coverage Threshold now: " << cover << std::endl;
        }
        break;
            
        case 'p':
        {
            OSG::Real32 covera = tact->getScreenLODCoverageThreshold();
            covera-=0.001f;
            tact->setScreenLODCoverageThreshold(covera);
            std::cout << "ScreenLOD Coverage Threshold now: " << covera << std::endl;
        }
        break;

        case 'D':
        {
            OSG::Real32 user_dega = tact->getScreenLODDegradationFactor();
            user_dega+=0.01f;
            tact->setScreenLODDegradationFactor(user_dega);
            std::cout << "ScreenLOD User Degradation Factor now: " << user_dega << std::endl;
        }
        break;

        case 'd':
        {
            OSG::Real32 user_deg = tact->getScreenLODDegradationFactor();
            user_deg-=0.01f;
            tact->setScreenLODDegradationFactor(user_deg);
            std::cout << "ScreenLOD User Degradation Factor now: " << user_deg << std::endl;
        }
        break;
        
        case 'N':
        {
            OSG::Real32 coverb = tact->getScreenLODCoverageThreshold();
            coverb=0.0;
            tact->setScreenLODCoverageThreshold(coverb);
            std::cout << "ScreenLOD Coverage Threshold now: " << coverb << std::endl;
        }
        break;

        case 'o':
        {
            tact->setOcclusionCulling(false);
            std::cout << "OCC Off" << std::endl;
        }
        break;

        case 'O':
        {
            tact->setOcclusionCulling(true);
            std::cout << "OCC On" << std::endl;
        }
        break;

        case 'f':
        {
            std::cout << "Freeze Occlusion result" << std::endl;
            
            //initElements();
            mgr->setUseTraversalAction(false);
            
            // Render stuff that is visible and tested
            mgr->getWindow()->getPort(0)->setTravMask(0x5);
        }
        break;
        
        case 'F':
        {
            std::cout << "Unfreeze Occlusion result" << std::endl;
            
            //initElements();
            mgr->setUseTraversalAction(true);
            
            mgr->getWindow()->getPort(0)->setTravMask(0xffffffff);
        }
        break;

        case 'W':
        {
            std::string sss = "out.osb";
            OSG::SceneFileHandler::the()->write(scene, sss.c_str());
        }
        break;

#ifdef OSG_WITH_NVPERFSDK
        case 'e':
            runExperiment = true;
            break;
#endif
    }

    redisplay();
}

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;
}