Hi,
I had looking for why it doesn't work. It seems that the first tab camera
projection matrix and view matrix are not valid (components =
-1.#IND000000000000) and I don't know why. I tryed to look into OSG code but I
don't found what is wrong... If someone have an idea it would be great !
Here is the code I use (running on OSG 3.0.1 and qt 4.7.3) :
Code:
#include <QtCore/QTimer>
#include <QtGui/QApplication>
#include <QtGui/QGridLayout>
#include <QTabWidget>
#include <osgViewer/CompositeViewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/TrackballManipulator>
#include <osgDB/ReadFile>
#include <osgQt/GraphicsWindowQt>
#include <iostream>
class ViewerWidget : public QWidget, public osgViewer::CompositeViewer
{
public:
ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel=osgViewer::CompositeViewer::SingleThreaded) : QWidget()
{
setThreadingModel(threadingModel);
// Create tab widget
QTabWidget* tab = new QTabWidget();
// Add tabs
tab->addTab(addViewWidget( createCamera(0,0,100,100),
osgDB::readNodeFile("cow.osg") ), "tab 1") ;
tab->addTab(addViewWidget( createCamera(0,0,100,100),
osgDB::readNodeFile("cessna.osg") ), "tab 2") ;
// Set layout
QGridLayout* grid = new QGridLayout;
grid->addWidget(tab, 0, 0) ;
setLayout( grid );
setRunFrameScheme(osgViewer::ViewerBase::ON_DEMAND);
_timerId = startTimer(0);
}
virtual ~ViewerWidget()
{
if (_timerId != 0)
killTimer(_timerId);
}
QWidget* addViewWidget( osg::Camera* camera, osg::Node* scene )
{
osgViewer::View* view = new osgViewer::View;
view->setCamera( camera );
addView( view );
view->setSceneData( scene );
view->addEventHandler( new osgViewer::StatsHandler );
view->setCameraManipulator( new osgGA::TrackballManipulator );
osgQt::GraphicsWindowQt* gw = dynamic_cast<osgQt::GraphicsWindowQt*>(
camera->getGraphicsContext() );
return gw ? gw->getGLWidget() : NULL;
}
osg::Camera* createCamera( int x, int y, int w, int h, const std::string&
name="", bool windowDecoration=false )
{
osg::DisplaySettings* ds = osg::DisplaySettings::instance().get();
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->windowName = name;
traits->windowDecoration = windowDecoration;
traits->x = x;
traits->y = y;
traits->width = w;
traits->height = h;
traits->doubleBuffer = true;
traits->alpha = ds->getMinimumNumAlphaBits();
traits->stencil = ds->getMinimumNumStencilBits();
traits->sampleBuffers = ds->getMultiSamples();
traits->samples = ds->getNumMultiSamples();
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext( new osgQt::GraphicsWindowQt(traits.get()) );
camera->setClearColor( osg::Vec4(0.2, 0.2, 0.6, 1.0) );
camera->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
camera->setProjectionMatrixAsPerspective(
30.0f, static_cast<double>(traits->width)/static_cast<double>(traits->height),
1.0f, 10000.0f );
return camera.release();
}
virtual bool event( QEvent* event )
{
if (event->type() == QEvent::Timer)
{
if (static_cast<QTimerEvent*>(event)->timerId() == _timerId)
{
frame();
return true;
}
}
return QWidget::event(event);
}
protected:
int _timerId;
};
int main( int argc, char** argv )
{
osg::ArgumentParser arguments(&argc, argv);
osgViewer::ViewerBase::ThreadingModel threadingModel =
osgViewer::ViewerBase::CullThreadPerCameraDrawThreadPerContext;
while (arguments.read("--SingleThreaded")) threadingModel =
osgViewer::ViewerBase::SingleThreaded;
while (arguments.read("--CullDrawThreadPerContext")) threadingModel =
osgViewer::ViewerBase::CullDrawThreadPerContext;
while (arguments.read("--DrawThreadPerContext")) threadingModel =
osgViewer::ViewerBase::DrawThreadPerContext;
while (arguments.read("--CullThreadPerCameraDrawThreadPerContext"))
threadingModel = osgViewer::ViewerBase::CullThreadPerCameraDrawThreadPerContext;
QApplication app(argc, argv);
ViewerWidget* viewWidget = new ViewerWidget(threadingModel);
viewWidget->setGeometry( 100, 100, 800, 600 );
viewWidget->show();
return app.exec();
}
Thanks,
Lucas
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=49837#49837
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