FGFS-4.1/OpenSceneGraph
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Ported GLUT example to using osgViewer::Viewer rather than SimpleViewer by using

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a local GraphicsWindowEmbedded class to help the adaption.
This commit is contained in:
Robert Osfield
2007-06-02 12:03:24 +00:00
parent 0ab50f6100
commit 8edb2f7284
1 changed files with 66 additions and 9 deletions
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75
examples/osgviewerGLUT/osgviewerGLUT.cpp
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@@ -13,11 +13,13 @@
# include <GL/glut.h>
#endif
#include <osgViewer/SimpleViewer>
#include <osgViewer/Viewer>
#include <osgViewer/StatsHandler>
#include <osgGA/TrackballManipulator>
#include <osgDB/ReadFile>
osg::ref_ptr<osgViewer::SimpleViewer> viewer;
osg::ref_ptr<osgViewer::Viewer> viewer;
osg::ref_ptr<osgViewer::GraphicsWindow> window;
void display(void)
{
@@ -32,18 +34,19 @@ void display(void)
void reshape( int w, int h )
{
// update the window dimensions, in case the window has been resized.
viewer->getEventQueue()->windowResize(0, 0, w, h );
window->resized(window->getTraits()->x, window->getTraits()->y, w, h);
window->getEventQueue()->windowResize(window->getTraits()->x, window->getTraits()->y, w, h );
}
void mousebutton( int button, int state, int x, int y )
{
if (state==0) viewer->getEventQueue()->mouseButtonPress( x, y, button+1 );
else viewer->getEventQueue()->mouseButtonRelease( x, y, button+1 );
if (state==0) window->getEventQueue()->mouseButtonPress( x, y, button+1 );
else window->getEventQueue()->mouseButtonRelease( x, y, button+1 );
}
void mousemove( int x, int y )
{
viewer->getEventQueue()->mouseMotion( x, y );
window->getEventQueue()->mouseMotion( x, y );
}
void keyboard( unsigned char key, int /*x*/, int /*y*/ )
@@ -54,12 +57,52 @@ void keyboard( unsigned char key, int /*x*/, int /*y*/ )
glutDestroyWindow(glutGetWindow());
break;
default:
viewer->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol) key );
viewer->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol) key );
window->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol) key );
window->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol) key );
break;
}
}
class GraphicsWindowEmbedded : public osgViewer::GraphicsWindow
{
public:
GraphicsWindowEmbedded(osg::GraphicsContext::Traits* traits=0)
{
_traits = traits;
init();
if (valid())
{
setState( new osg::State );
getState()->setGraphicsContext(this);
if (_traits.valid() && _traits->sharedContext)
{
getState()->setContextID( _traits->sharedContext->getState()->getContextID() );
incrementContextIDUsageCount( getState()->getContextID() );
}
else
{
getState()->setContextID( osg::GraphicsContext::createNewContextID() );
}
}
}
void init() {}
virtual bool valid() const { return true; }
virtual bool realizeImplementation() { return true; }
virtual bool isRealizedImplementation() const { return true; }
virtual void closeImplementation() {}
virtual bool makeCurrentImplementation() {}
virtual bool releaseContextImplementation() {}
virtual void swapBuffersImplementation() {}
virtual void grabFocus() {}
virtual void grabFocusIfPointerInWindow() {}
};
int main( int argc, char **argv )
{
glutInit(&argc, argv);
@@ -88,12 +131,26 @@ int main( int argc, char **argv )
glutMotionFunc( mousemove );
glutKeyboardFunc( keyboard );
osg::GraphicsContext::Traits* traits = new osg::GraphicsContext::Traits;
traits->x = 100;
traits->y = 100;
traits->width = 800;
traits->height = 600;
window = new GraphicsWindowEmbedded(traits);
// create the view of the scene.
viewer = new osgViewer::SimpleViewer;
viewer = new osgViewer::Viewer;
viewer->getCamera()->setGraphicsContext(window.get());
viewer->getCamera()->setViewport(new osg::Viewport(0,0,800,600));
viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
viewer->setSceneData(loadedModel.get());
viewer->setCameraManipulator(new osgGA::TrackballManipulator);
viewer->addEventHandler(new osgViewer::StatsHandler);
viewer->realize();
glutMainLoop();
return 0;
}