分享：OSG+QT+QThread结合的示例
本帖最后由 saridon 于 2011-10-28 13:12 编辑OSG+QT结合的小例子
参考王老师写的OSG中的osgViewerQt例子，只是把QTimer换成了QThread而已。
////////////////////////////////////////////////////////////////////////////////////////////////
/////////RenderThread.h
#ifndef RENDER_THREAD_H
#define RENDER_THREAD_H
#include <QtCore/QThread>
#include <QtCore/QMutex>
class RenderThread : public QThread
{
Q_OBJECT
public:
RenderThread(QObject *parent = 0);
public:
void startRender();
void stopRender();
protected:
virtual void run();
signals:
void notify();
private:
bool stop_;
QMutex mutex;
};
#endif
////////////////////////////////////////////////////////////////////////////////////////////////
// RenderThread.cpp
#include "RenderThread.h"
RenderThread::RenderThread(QObject *parent) : QThread(parent)
{
stop_ = true;
}
void RenderThread::startRender()
{
stop_ = false;
start(HighestPriority);
}
void RenderThread::stopRender()
{
mutex.lock();
stop_ = true;
mutex.unlock();
}
void RenderThread::run()
{
forever
{
mutex.lock();
if(stop_)
{
stop_ = false;
mutex.unlock();
break;
}
msleep(50);
emit notify();
mutex.unlock();
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
// AdapterWidget.h
#ifndef ADAPTERWIDGET_H
#define ADAPTERWIDGET_H
#include <QtCore/QString>
#include <QtGui/QKeyEvent>
#include <QtOpenGL/QGLWidget>
#include <osgViewer/Viewer>
#include <osgViewer/CompositeViewer>
#include "RenderThread.h"
using Qt::WindowFlags;
class AdapterWidget : public QGLWidget
{
Q_OBJECT
public:
AdapterWidget( osgViewer::Viewer *viewer,
QWidget * parent = 0,
const char * name = 0,
const QGLWidget * shareWidget = 0,
WindowFlags f = 0 );
virtual ~AdapterWidget();
osgViewer::GraphicsWindow* getGraphicsWindow() { return _gw.get(); }
const osgViewer::GraphicsWindow* getGraphicsWindow() const { return _gw.get(); }
public slots:
void doNotify();
protected:
void init();
virtual void paintGL();
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 );
virtual void wheelEvent(QWheelEvent *);
osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> _gw;
private:
osgViewer::Viewer *viewer_;
RenderThread render_thread_;
};
#endif
////////////////////////////////////////////////////////////////////////////////////////////////
// AdapterWidget.cpp
#include "AdapterWidget.h"
AdapterWidget::AdapterWidget(osgViewer::Viewer *viewer,
QWidget * parent,
const char * name,
const QGLWidget * shareWidget, WindowFlags f)
: QGLWidget(parent, shareWidget, f)
{
viewer_ = viewer;
_gw = new osgViewer::GraphicsWindowEmbedded(0,0,width(),height());
setFocusPolicy(Qt::ClickFocus);
connect(&render_thread_, SIGNAL(notify()), this, SLOT(doNotify()));
render_thread_.startRender();
}
void AdapterWidget::doNotify()
{
update();
}
void AdapterWidget::paintGL()
{
if(viewer_)
{
viewer_->frame();
}
}
void AdapterWidget::resizeGL( int width, int height )
{
_gw->getEventQueue()->windowResize(0, 0, width, height );
_gw->resized(0,0,width,height);
}
void AdapterWidget::keyPressEvent( QKeyEvent* event )
{
_gw->getEventQueue()->keyPress((osgGA::GUIEventAdapter::KeySymbol) *(event->text().toAscii().data() ));
}
void AdapterWidget::keyReleaseEvent( QKeyEvent* event )
{
_gw->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol) *(event->text().toAscii().data() ) );
}
void AdapterWidget::mousePressEvent( QMouseEvent* event )
{
int button = 0;
switch(event->button())
{
case(Qt::LeftButton): button = 1; break;
case(Qt::MidButton): button = 2; break;
case(Qt::RightButton): button = 3; break;
case(Qt::NoButton): button = 0; break;
default: button = 0; break;
}
_gw->getEventQueue()->mouseButtonPress(event->x(), event->y(), button);
}
void AdapterWidget::mouseReleaseEvent( QMouseEvent* event )
{
int button = 0;
switch(event->button())
{
case(Qt::LeftButton): button = 1; break;
case(Qt::MidButton): button = 2; break;
case(Qt::RightButton): button = 3; break;
case(Qt::NoButton): button = 0; break;
default: button = 0; break;
}
_gw->getEventQueue()->mouseButtonRelease(event->x(), event->y(), button);
}
void AdapterWidget::mouseMoveEvent( QMouseEvent* event )
{
_gw->getEventQueue()->mouseMotion(event->x(), event->y());
}
void AdapterWidget::wheelEvent(QWheelEvent * event)
{
//if(event->orientation()==Qt::Vertical)
if(event->delta()>0)
_gw->getEventQueue()->mouseScroll(osgGA::GUIEventAdapter::SCROLL_UP);
else
_gw->getEventQueue()->mouseScroll(osgGA::GUIEventAdapter::SCROLL_DOWN);
}
AdapterWidget::~AdapterWidget()
{
render_thread_.stopRender();
render_thread_.wait();
} 支持分享啊~~~~~~~~~~~~~~~ 谢谢楼主
谢谢楼主 谢谢 学习了。。谢谢 很实用的例子啊，谢谢了 很不错，改成Thread是不是就意味着每次绘制过程介绍后不用等下一次的timer事件，直接就可以开始新的绘制过程了。 我调试了一下楼主的代码，viewer_->frame();并未在QThread线程中执行，而是在Qt的主线程中执行
楼主应该先去了解一下connect函数的第五个参数 感谢分享。。。。:)
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