FGFS-4.1/OpenSceneGraph
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Improved handling of intersection computations on datasets with multiple cameras

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This commit is contained in:
Robert Osfield
2007-01-15 16:09:32 +00:00
parent b06dbda224
commit 91968a9bec
3 changed files with 198 additions and 51 deletions
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123
examples/osgcamera/osgcamera.cpp
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@@ -6,6 +6,114 @@
#include <osgGA/AnimationPathManipulator>
#include <iostream>
class ThreadingHandler : public osgGA::GUIEventHandler
{
public:
ThreadingHandler() {}
bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa)
{
osgViewer::Viewer* viewer = dynamic_cast<osgViewer::Viewer*>(&aa);
if (!viewer) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYUP):
{
if (ea.getKey()=='m')
{
switch(viewer->getThreadingModel())
{
case(osgViewer::Viewer::SingleThreaded):
viewer->setThreadingModel(osgViewer::Viewer::ThreadPerContext);
osg::notify(osg::NOTICE)<<"Threading model 'ThreadPerContext' selected."<<std::endl;
break;
case(osgViewer::Viewer::ThreadPerContext):
viewer->setThreadingModel(osgViewer::Viewer::ThreadPerCamera);
osg::notify(osg::NOTICE)<<"Threading model 'ThreadPerCamera' selected."<<std::endl;
break;
case(osgViewer::Viewer::ThreadPerCamera):
viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
osg::notify(osg::NOTICE)<<"Threading model 'SingleTheaded' selected."<<std::endl;
break;
}
return true;
}
if (ea.getKey()=='e')
{
switch(viewer->getEndBarrierPosition())
{
case(osgViewer::Viewer::BeforeSwapBuffers):
viewer->setEndBarrierPosition(osgViewer::Viewer::AfterSwapBuffers);
osg::notify(osg::NOTICE)<<"Threading model 'AfterSwapBuffers' selected."<<std::endl;
break;
case(osgViewer::Viewer::AfterSwapBuffers):
viewer->setEndBarrierPosition(osgViewer::Viewer::BeforeSwapBuffers);
osg::notify(osg::NOTICE)<<"Threading model 'BeforeSwapBuffers' selected."<<std::endl;
break;
}
return true;
}
}
default: break;
}
return false;
}
bool _done;
};
class ModelHandler : public osgGA::GUIEventHandler
{
public:
ModelHandler():
_position(0) {}
typedef std::vector<std::string> Filenames;
Filenames _filenames;
unsigned int _position;
void add(const std::string& filename) { _filenames.push_back(filename); }
bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa)
{
osgViewer::Viewer* viewer = dynamic_cast<osgViewer::Viewer*>(&aa);
if (!viewer) return false;
if (_filenames.empty()) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYUP):
{
if (ea.getKey()=='l')
{
osg::ref_ptr<osg::Node> model = osgDB::readNodeFile( _filenames[_position] );
++_position;
if (_position>=_filenames.size()) _position = 0;
if (model.valid())
{
viewer->setSceneData(model.get());
}
return true;
}
}
default: break;
}
return false;
}
bool _done;
};
void singleWindowMultipleCameras(osgViewer::Viewer& viewer)
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
@@ -147,6 +255,18 @@ int main( int argc, char **argv )
if (apm.valid()) viewer.setCameraManipulator(apm.get());
else viewer.setCameraManipulator( new osgGA::TrackballManipulator() );
#if 0
ModelHandler* modelHandler = new ModelHandler;
for(int i=1; i<arguments.argc();++i)
{
modelHandler->add(arguments[i]);
}
viewer.addEventHandler(modelHandler);
#else
// load the scene.
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
if (!loadedModel)
@@ -156,8 +276,7 @@ int main( int argc, char **argv )
}
viewer.setSceneData(loadedModel.get());
// viewer.setThreadingModel(osgViewer::Viewer::SingleThreaded);
#endif
viewer.realize();