I'm not sure how many people can see this because I am not sure how many people
use Qt 3.3.3 or if it is reproducible in Qt4. However, I can get objects in a
one window to dissapear when another winodow is destructed even when using a
different scene. (My previous example used the same scene). At this point the
ViewerQts should have nothing in common, but one ViewerQt affects another when
it is destructed.
Example attached
osgviewerQTd.exe cow.osg
One window should have a cow and another window some random shapes. When I
close the cow window I have seen one or more shapes dissapear from the shape
window. I can also close the shape window and the cow will sometimes disappear.
Thank you,
Virginia
/* OpenSceneGraph example, osganimate.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <osgViewer/Viewer>
#include <osgViewer/CompositeViewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/TrackballManipulator>
#include <osgDB/ReadFile>
#include <osg/ShapeDrawable>
#if USE_QT4
#include <QtCore/QString>
#include <QtCore/QTimer>
#include <QtGui/QKeyEvent>
#include <QtGui/QApplication>
#include <QtOpenGL/QGLWidget>
#include <QtGui/QMainWindow>
#include <QtGui/QMdiSubWindow>
#include <QtGui/QMdiArea>
using Qt::WindowFlags;
#else
class QWidget;
#include <qtimer.h>
#include <qgl.h>
#include <qapplication.h>
#define WindowFlags WFlags
#endif
#include <iostream>
class AdapterWidget : public QGLWidget
{
public:
AdapterWidget( 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(); }
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):
#if USE_QT4
QGLWidget(parent, shareWidget, f)
#else
QGLWidget(parent, name, shareWidget, f)
#endif
{
_gw = new osgViewer::GraphicsWindowEmbedded(0,0,width(),height());
#if USE_QT4
setFocusPolicy(Qt::ClickFocus);
#else
setFocusPolicy(QWidget::ClickFocus);
#endif
}
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 )
{
#if USE_QT4
_gw->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol)
*(event->text().toAscii().data() ) );
#else
_gw->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol)
event->ascii() );
#endif
}
void AdapterWidget::keyReleaseEvent( QKeyEvent* event )
{
#if USE_QT4
_gw->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol)
*(event->text().toAscii().data() ) );
#else
_gw->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol)
event->ascii() );
#endif
}
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());
}
class ViewerQT : public osgViewer::Viewer, public AdapterWidget
{
public:
ViewerQT(QWidget * parent = 0, const char * name = 0, const
QGLWidget * shareWidget = 0, WindowFlags f = Qt::WDestructiveClose):
AdapterWidget( parent, name, shareWidget, f )
{
getCamera()->setViewport(new osg::Viewport(0,0,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()));
_timer.start(10);
}
virtual ~ViewerQT()
{
}
virtual void paintGL()
{
frame();
}
protected:
QTimer _timer;
};
class CompositeViewerQT : public osgViewer::CompositeViewer, public
AdapterWidget
{
public:
CompositeViewerQT(QWidget * parent = 0, const char * name = 0, const
QGLWidget * shareWidget = 0, WindowFlags f = 0):
AdapterWidget( parent, name, shareWidget, f )
{
setThreadingModel(osgViewer::CompositeViewer::SingleThreaded);
connect(&_timer, SIGNAL(timeout()), this, SLOT(updateGL()));
_timer.start(10);
}
virtual void paintGL()
{
frame();
}
protected:
QTimer _timer;
};
int mainAdapterWidget(QApplication& a, osg::ArgumentParser& arguments)
{
// load the scene.
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
if (!loadedModel)
{
std::cout << arguments[0] <<": No data loaded." << std::endl;
return 1;
}
std::cout<<"Using AdapterWidget - QGLWidget subclassed to integrate with
osgViewer using its embedded graphics window support."<<std::endl;
if (arguments.read("--CompositeViewer"))
{
CompositeViewerQT* viewerWindow = new CompositeViewerQT;
unsigned int width = viewerWindow->width();
unsigned int height = viewerWindow->height();
{
osgViewer::View* view1 = new osgViewer::View;
view1->getCamera()->setGraphicsContext(viewerWindow->getGraphicsWindow());
view1->getCamera()->setProjectionMatrixAsPerspective(30.0f,
static_cast<double>(width)/static_cast<double>(height/2), 1.0, 1000.0);
view1->getCamera()->setViewport(new
osg::Viewport(0,0,width,height/2));
view1->setCameraManipulator(new osgGA::TrackballManipulator);
view1->setSceneData(loadedModel.get());
viewerWindow->addView(view1);
}
{
osgViewer::View* view2 = new osgViewer::View;
view2->getCamera()->setGraphicsContext(viewerWindow->getGraphicsWindow());
view2->getCamera()->setProjectionMatrixAsPerspective(30.0f,
static_cast<double>(width)/static_cast<double>(height/2), 1.0, 1000.0);
view2->getCamera()->setViewport(new
osg::Viewport(0,height/2,width,height/2));
view2->setCameraManipulator(new osgGA::TrackballManipulator);
view2->setSceneData(loadedModel.get());
viewerWindow->addView(view2);
}
viewerWindow->show();
#if USE_QT4
}
else if (arguments.read("--mdi")) {
std::cout<<"Using ViewetQT MDI version"<<std::endl;
/*
Following problems are found here:
- miminize causes loaded model to disappear (some problem with Camera
matrix? - clampProjectionMatrix is invalid)
*/
ViewerQT* viewerWindow = new ViewerQT;
viewerWindow->setCameraManipulator(new osgGA::TrackballManipulator);
viewerWindow->setSceneData(loadedModel.get());
QMainWindow* mw = new QMainWindow();
QMdiArea* mdiArea = new QMdiArea(mw);
mw->setCentralWidget(mdiArea);
QMdiSubWindow *subWindow = mdiArea->addSubWindow(viewerWindow);
subWindow->showMaximized();
subWindow->setWindowTitle("New Window");
mw->show();
#endif // USE_QT4
}
else
{
ViewerQT* viewerWindow = new ViewerQT;
viewerWindow->setCameraManipulator(new osgGA::TrackballManipulator);
viewerWindow->setSceneData(loadedModel.get());
viewerWindow->show();
osg::Group* scene = new osg::Group;
osg::ref_ptr<osg::Geode> geode_1 = new osg::Geode;
scene->addChild(geode_1.get());
const float radius = 0.8f;
const float height = 1.0f;
osg::ref_ptr<osg::TessellationHints> hints = new
osg::TessellationHints;
hints->setDetailRatio(2.0f);
osg::ref_ptr<osg::ShapeDrawable> shape;
shape = new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0f,
0.0f, -2.0f), 10, 10.0f, 0.1f), hints.get());
shape->setColor(osg::Vec4(0.5f, 0.5f, 0.7f, 1.0f));
geode_1->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(0.0f,
0.0f, 0.0f), radius * 2), hints.get());
shape->setColor(osg::Vec4(0.8f, 0.8f, 0.8f, 1.0f));
geode_1->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(-3.0f,
0.0f, 0.0f), radius), hints.get());
shape->setColor(osg::Vec4(0.6f, 0.8f, 0.8f, 1.0f));
geode_1->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Box(osg::Vec3(3.0f,
0.0f, 0.0f), 2 * radius), hints.get());
shape->setColor(osg::Vec4(0.4f, 0.9f, 0.3f, 1.0f));
geode_1->addDrawable(shape.get());
ViewerQT* viewerWindow3 = new ViewerQT;
viewerWindow3->setCameraManipulator(new osgGA::TrackballManipulator);
viewerWindow3->setSceneData(scene);
viewerWindow3->show();
}
a.connect( &a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()) );
return a.exec();
}
/*EOF*/
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