int main(int argc, char** argv)
{
QApplication app(argc, argv);
// prepare scene.
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 1.0f;
// create the hud.
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera->setProjectionMatrixAsOrtho2D(0,1280,0,1024);
camera->setViewMatrix(osg::Matrix::identity());
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
camera->addChild(createHUDText());
camera->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
// make sure the root node is group so we can add extra nodes to it.
osg::ref_ptr<osg::Group> group = new osg::Group;
group->addChild(camera.get());
group->addChild(create3DText(center, radius));
// The qt window
MainWindow widget;
// set the scene to render
widget.setSceneData(group.get());
widget.setCameraManipulator(new osgGA::TrackballManipulator);
widget.setGeometry(100, 100, 800, 600);
widget.show();
return app.exec();
}
int main(int, char**)
{
osgViewer::Viewer viewer;
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 1.0f;
osg::Group* root = new osg::Group;
root->addChild(create3DText(center, radius));
viewer.setSceneData(root);
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
viewer.addEventHandler(new osgViewer::ThreadingHandler);
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
viewer.addEventHandler(new osgViewer::StatsHandler);
viewer.run();
return 0;
}
int main(int argc, char** argv)
{
osg::ArgumentParser arguments(&argc, argv);
// construct the viewer.
osgViewer::Viewer viewer(arguments);
typedef std::list< osg::ref_ptr<osg::OperationThread> > Threads;
Threads operationThreads;
osg::ref_ptr<UpdateTextOperation> updateOperation;
unsigned int numThreads = 0;
if (arguments.read("--mt", numThreads) || arguments.read("--mt"))
{
// construct a multi-threaded text updating test.
if (numThreads==0) numThreads = 1;
// create a group to add everything into.
osg::Group* mainGroup = new osg::Group;
osg::Vec3 center(0.5f,0.5f,0.5f);
float diameter = 1.0f;
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
if (loadedModel.valid())
{
mainGroup->addChild(loadedModel.get());
center = loadedModel->getBound().center();
diameter = loadedModel->getBound().radius() * 2.0f;
}
for(unsigned int i=0; i<numThreads; ++i)
{
osg::Group* textGroup = new osg::Group;
mainGroup->addChild(textGroup);
// create the background thread
osg::OperationThread* operationThread = new osg::OperationThread;
operationThreads.push_back(operationThread);
// create the operation that will run in the background and
// sync once per frame with the main viewer loop.
updateOperation = new UpdateTextOperation(center, diameter, textGroup);
// add the operation to the operation thread and start it.
operationThread->add(updateOperation.get());
operationThread->startThread();
// add the operation to the viewer to sync once per frame.
viewer.addUpdateOperation(updateOperation.get());
// add a unit cube for the text to appear within.
osg::Geode* geode = new osg::Geode;
geode->getOrCreateStateSet()->setAttribute(new osg::PolygonMode(osg::PolygonMode::FRONT_AND_BACK,osg::PolygonMode::LINE));
geode->addDrawable(new osg::ShapeDrawable(new osg::Box(center,diameter)));
mainGroup->addChild(geode);
}
viewer.setSceneData(mainGroup);
}
else
{
// prepare scene.
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 1.0f;
// make sure the root node is group so we can add extra nodes to it.
osg::Group* group = new osg::Group;
if (true)
{
// create the hud.
osg::Camera* camera = new osg::Camera;
camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
camera->setProjectionMatrixAsOrtho2D(0,1280,0,1024);
camera->setViewMatrix(osg::Matrix::identity());
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
camera->addChild(createHUDText());
camera->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
group->addChild(camera);
}
if (true)
{
group->addChild(create3DText(center,radius));
}
// set the scene to render
viewer.setSceneData(group);
}
std::string filename;
if (arguments.read("-o",filename))
{
osgDB::writeNodeFile(*viewer.getSceneData(),filename);
return 0;
}
viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
viewer.addEventHandler(new osgViewer::StatsHandler());
viewer.run();
if (!operationThreads.empty())
{
for(Threads::iterator itr = operationThreads.begin();
itr != operationThreads.end();
++itr)
{
(*itr)->cancel();
}
}
return 0;
}
