osgearth在qt Creater下的工程，qt5.12，编译器msvc2017，osg3.4 osgearth2.8

#include "mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); viewer = new osgViewer::Viewer; //必须有这一句，不然报错 viewer->setThreadingModel(viewer->SingleThreaded);//这种方法只能单线程，帧率低 root = new osg::Group; em = new osgEarth::Util::EarthManipulator; viewer->setCameraManipulator(em); earth = osgDB::readNodeFile("clear.earth"); root->addChild(earth); viewer->setSceneData(root); viewer->addEventHandler(new osgViewer::StatsHandler);//添加s键帧率显示事件 ////窗口大小变化，响应F //viewer->addEventHandler(new osgViewer::WindowSizeHandler); //创建场景widget指针 QWidget* sceneWidget = createGraphicsWindow(0, 0, 1920, 1080, "main window", true); this->setCentralWidget(sceneWidget); //update每执行一次，则执行paintEvent connect(&timer, SIGNAL(timeout()), this, SLOT(update())); //update在qwidget内 //10ms执行一次定时器 timer.start(5); } MainWindow::~MainWindow() { delete ui; } QWidget* MainWindow::createGraphicsWindow(int nX, int nY, int nW, int nH, const std::string& strName, bool bWindowDecoration) { //显示设置 osg::DisplaySettings* pDS = osg::DisplaySettings::instance().get(); osg::GraphicsContext::Traits* pTraits = new osg::GraphicsContext::Traits(pDS); //场景内容显示特征 pTraits->windowName = strName;//窗口名称 pTraits->windowDecoration = false;//窗口装饰 pTraits->overrideRedirect = true;//重定向 pTraits->x = nX;//x位置 pTraits->y = nY;//y位置 pTraits->width = nW;//宽 pTraits->height = nH;//高 pTraits->doubleBuffer = true;//双缓存 pTraits->alpha = pDS->getMinimumNumAlphaBits(); pTraits->stencil = pDS->getMinimumNumStencilBits();//模具 pTraits->sampleBuffers = pDS->getMultiSamples();//采样缓存 pTraits->samples = pDS->getNumMultiSamples(); osgQt::GraphicsWindowQt* pGW = new osgQt::GraphicsWindowQt(pTraits);//新建窗口 if (!pGW) { return nullptr; } if (!viewer) { return nullptr; } osg::Camera* pCamera = viewer->getCamera(); if (!pCamera) { return nullptr; } pCamera->setGraphicsContext(pGW); //背景颜色 pCamera->setClearColor(osg::Vec4(0, 0, 0, 1.0)); //设置窗口放置位置 pCamera->setViewport(new osg::Viewport(0, 0, pTraits->width, pTraits->height)); qDebug() << pTraits->width << " " << pTraits->height; //设置远近裁截面 pCamera->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(pTraits->width) / static_cast<double>(pTraits->height), 1.0f, 10000.0f); return pGW->getGLWidget(); } void MainWindow::paintEvent(QPaintEvent* event) { viewer->frame(); }