[转][osg][QT]osg与QT界面结合的简单例子

//QT += core gui opengl

//LIBS +=  -losgViewer  -losgDB -losgUtil  -losg  -lOpenThreads -losgGA -losgQt

#include <QtGui/QApplication>

#include <osg/ArgumentParser>

#include <osgViewer/Viewer>

#include <osgViewer/CompositeViewer>

#include <osgViewer/ViewerEventHandlers>

#include <osgGA/TrackballManipulator>

#include <osgDB/ReadFile>

#include <QtCore/QString>

#include <QtCore/QTimer>

#include <QtGui/QKeyEvent>

#include <QtGui/QApplication>

#include <QtOpenGL/QGLWidget>

#include <QtGui/QMainWindow>

#include <QtGui/QMdiSubWindow>

#include <QtGui/QMdiArea>

#include <iostream>

using Qt::WindowFlags;

class AdapterWidget:public QGLWidget

{

public:

    AdapterWidget(QWidget *parent=,const char* name=,const QGLWidget * shareWidget=,WindowFlags f=);

    virtual ~AdapterWidget()

    {

    }

    osgViewer::GraphicsWindow* getGraphicsWindow()

    {

        return _gw.get();

    }

    const osgViewer::GraphicsWindow* getGraphicsWidow()const

    {

        return _gw.get();

    }

protected:

    void init();

    virtual void resizeGL(int width,int height);

    virtual void keyPressEvent(QKeyEvent* event);

    virtual void keyReleaseEvent(QKeyEvent* event);

    virtual void mousePressEvent(QMouseEvent* event);

    virtual void mouseReleaseEvent(QMouseEvent* event);//

    virtual void mouseMoveEvent(QMouseEvent* event);

    osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> _gw;

};

AdapterWidget::AdapterWidget(QWidget *parent,const char* name,const QGLWidget * shareWidget,WindowFlags f):QGLWidget(parent,shareWidget,f)

{

    _gw=new osgViewer::GraphicsWindowEmbedded(,,width(),height());

    setFocusPolicy(Qt::ClickFocus);

}

void AdapterWidget::resizeGL(int width, int height)

{

    _gw->getEventQueue()->windowResize(,,width,height);

    _gw->resized(,,width,height);

}

void AdapterWidget::keyPressEvent(QKeyEvent* event)

{

    //_gw->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol) *(event->text().toAscii().data() ) );

　　_gw->getEventQueue()->keyPress((osgGA::GUIEventAdapter::KeySymbol)*(event->text().toLatin1().data()));//qt5

}

void AdapterWidget::keyReleaseEvent(QKeyEvent* event)

{

    //_gw->getEventQueue()->keyRelease(  (osgGA::GUIEventAdapter::KeySymbol)*(event->text().toAscii().data()));

　　_gw->getEventQueue()->keyRelease((osgGA::GUIEventAdapter::KeySymbol)*(event->text().toLatin1().data()));//qt5

}

void AdapterWidget::mousePressEvent(QMouseEvent* event)

{

    int button=;

    switch (event->button())

    {

    case(Qt::LeftButton):

        button=;

        break;

    case (Qt::MidButton):

        button=;

        break;

    case (Qt::RightButton):

        button=;

        break;

    case (Qt::NoButton):

        button=;

        break;

    default:

        button=;

        break;

    }

    _gw->getEventQueue()->mouseButtonPress(event->x(),event->y(),button);

}

void AdapterWidget::mouseReleaseEvent( QMouseEvent* event )

{

    int button = ;

    switch(event->button())

    {

    case(Qt::LeftButton):

        button = ;

        break;

    case(Qt::MidButton):

        button = ;

        break;

    case(Qt::RightButton):

        button = ;

        break;

    case(Qt::NoButton):

        button = ;

        break;

    default:

        button = ;

        break;

    }

    _gw->getEventQueue()->mouseButtonRelease(event->x(), event->y(), button);

}

void  AdapterWidget::mouseMoveEvent(QMouseEvent* event)

{

    _gw->getEventQueue()->mouseMotion(event->x(),event->y());

}

class ViewerQT : public osgViewer::Viewer, public AdapterWidget

{

public:

    ViewerQT(QWidget * parent=,const char * name=,const QGLWidget * shareWidget=,WindowFlags f=):AdapterWidget(parent ,name,shareWidget ,f)

    {

        getCamera()->setViewport(new osg::Viewport(,,width(),height()));

        getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(width())/static_cast<double>(height()), 1.0f, 10000.0f);

        getCamera()->setGraphicsContext(getGraphicsWindow());

        setThreadingModel(osgViewer::Viewer::SingleThreaded);

        connect(&_timer,SIGNAL(timeout()),this,SLOT(updateGL()));//并且把它的timeout()连接到适当的槽。当这段时间过去了，它将会发射timeout()信号。

        _timer.start();//使用start()来开始

    }

    virtual void paintGL()

    {

        frame();

    }

protected:

    QTimer _timer;

};

int main(int argc,char** argv)

{
/*

QTextCodec *xcodec = QTextCodec::codecForLocale();
QString exeDir = xcodec->toUnicode(QByteArray(argv[0]));
QString BKE_CURRENT_DIR = QFileInfo(exeDir).path();
QStringList libpath;
libpath << BKE_CURRENT_DIR + QString::fromLocal8Bit("/plugins/platforms");
libpath << BKE_CURRENT_DIR << BKE_CURRENT_DIR + QString::fromLocal8Bit("/plugins/imageformats");
libpath << BKE_CURRENT_DIR + QString::fromLocal8Bit("/plugins");
libpath << QApplication::libraryPaths();
QApplication::setLibraryPaths(libpath);
//以上是跑qt的环境变量

*/

    QApplication a(argc,argv);

    osg::ref_ptr<osg::Node>  loadedModel=osgDB::readNodeFile("cow.osg");

    ViewerQT * ViewerWindow=new ViewerQT;

    ViewerWindow->setCameraManipulator(new osgGA::TrackballManipulator);

    ViewerWindow->setSceneData(loadedModel.get());

    QMainWindow* mw=new QMainWindow();

    mw->showMaximized();

    mw->setCentralWidget(ViewerWindow);

    mw->show();

    a.connect(&a,SIGNAL(lastWindowClosed()),&a,SLOT(quit()));

    return a.exec();

}

转自：https://www.cnblogs.com/sangzaohaishui/p/4687771.html

注意：QGLWidget使用的库是：Qt5OpenGL.lib