void CompositeViewer::updateTraversal()
{
    if (_done) return;

    double beginUpdateTraversal = osg::Timer::instance()->delta_s(_startTick, osg::Timer::instance()->tick());

    _updateVisitor->reset();
    _updateVisitor->setFrameStamp(getFrameStamp());
    _updateVisitor->setTraversalNumber(getFrameStamp()->getFrameNumber());

    Scenes scenes;
    getScenes(scenes);
    for(Scenes::iterator sitr = scenes.begin();
            sitr != scenes.end();
            ++sitr)
    {
        Scene* scene = *sitr;
        scene->updateSceneGraph(*_updateVisitor);
    }

    // if we have a shared state manager prune any unused entries
    if (osgDB::Registry::instance()->getSharedStateManager())
        osgDB::Registry::instance()->getSharedStateManager()->prune();

    // update the Registry object cache.
    osgDB::Registry::instance()->updateTimeStampOfObjectsInCacheWithExternalReferences(*getFrameStamp());
    osgDB::Registry::instance()->removeExpiredObjectsInCache(*getFrameStamp());


    if (_incrementalCompileOperation.valid())
    {
        // merge subgraphs that have been compiled by the incremental compiler operation.
        _incrementalCompileOperation->mergeCompiledSubgraphs(getFrameStamp());
    }

    if (_updateOperations.valid())
    {
        _updateOperations->runOperations(this);
    }

    for(RefViews::iterator vitr = _views.begin();
            vitr != _views.end();
            ++vitr)
    {
        View* view = vitr->get();

        {
            // Do UpdateTraversal for slaves with their own subgraph
            for(unsigned int i=0; i<view->getNumSlaves(); ++i)
            {
                osg::View::Slave& slave = view->getSlave(i);
                osg::Camera* camera = slave._camera.get();
                if(camera && !slave._useMastersSceneData)
                {
                    camera->accept(*_updateVisitor);
                }
            }

            // call any camera update callbacks, but only traverse that callback, don't traverse its subgraph
            // leave that to the scene update traversal.
            osg::NodeVisitor::TraversalMode tm = _updateVisitor->getTraversalMode();
            _updateVisitor->setTraversalMode(osg::NodeVisitor::TRAVERSE_NONE);

            if (view->getCamera() && view->getCamera()->getUpdateCallback()) view->getCamera()->accept(*_updateVisitor);

            for(unsigned int i=0; i<view->getNumSlaves(); ++i)
            {
                osg::View::Slave& slave = view->getSlave(i);
                osg::Camera* camera = slave._camera.get();
                if (camera && slave._useMastersSceneData && camera->getUpdateCallback())
                {
                    camera->accept(*_updateVisitor);
                }
            }

            _updateVisitor->setTraversalMode(tm);
        }


        if (view->getCameraManipulator())
        {
            view->setFusionDistance( view->getCameraManipulator()->getFusionDistanceMode(),
                                     view->getCameraManipulator()->getFusionDistanceValue() );

            view->getCameraManipulator()->updateCamera(*(view->getCamera()));

        }
        view->updateSlaves();

    }

    if (getViewerStats() && getViewerStats()->collectStats("update"))
    {
        double endUpdateTraversal = osg::Timer::instance()->delta_s(_startTick, osg::Timer::instance()->tick());

        // update current frames stats
        getViewerStats()->setAttribute(_frameStamp->getFrameNumber(), "Update traversal begin time", beginUpdateTraversal);
        getViewerStats()->setAttribute(_frameStamp->getFrameNumber(), "Update traversal end time", endUpdateTraversal);
        getViewerStats()->setAttribute(_frameStamp->getFrameNumber(), "Update traversal time taken", endUpdateTraversal-beginUpdateTraversal);
    }

}
Пример #2
0
void CompositeViewer::updateTraversal()
{
    if (_done) return;

    double beginUpdateTraversal = osg::Timer::instance()->delta_s(_startTick, osg::Timer::instance()->tick());

    _updateVisitor->reset();
    _updateVisitor->setFrameStamp(getFrameStamp());
    _updateVisitor->setTraversalNumber(getFrameStamp()->getFrameNumber());

    Scenes scenes;
    getScenes(scenes);
    for(Scenes::iterator sitr = scenes.begin();
            sitr != scenes.end();
            ++sitr)
    {
        Scene* scene = *sitr;
        if (scene->getSceneData())
        {
            _updateVisitor->setImageRequestHandler(scene->getImagePager());

            scene->getSceneData()->accept(*_updateVisitor);
        }

        if (scene->getDatabasePager())
        {
            // synchronize changes required by the DatabasePager thread to the scene graph
            scene->getDatabasePager()->updateSceneGraph(*_frameStamp);
        }

        if (scene->getImagePager())
        {
            // synchronize changes required by the DatabasePager thread to the scene graph
            scene->getImagePager()->updateSceneGraph(*_frameStamp);
        }

    }

    if (_updateOperations.valid())
    {
        _updateOperations->runOperations(this);
    }

    for(RefViews::iterator vitr = _views.begin();
            vitr != _views.end();
            ++vitr)
    {
        View* view = vitr->get();

        Scene* scene = view->getScene();

        {
            // call any camera update callbacks, but only traverse that callback, don't traverse its subgraph
            // leave that to the scene update traversal.
            osg::NodeVisitor::TraversalMode tm = _updateVisitor->getTraversalMode();
            _updateVisitor->setTraversalMode(osg::NodeVisitor::TRAVERSE_NONE);

            if (view->getCamera() && view->getCamera()->getUpdateCallback()) view->getCamera()->accept(*_updateVisitor);

            for(unsigned int i=0; i<view->getNumSlaves(); ++i)
            {
                osg::Camera* camera = view->getSlave(i)._camera.get();
                if (camera && camera->getUpdateCallback()) camera->accept(*_updateVisitor);
            }

            _updateVisitor->setTraversalMode(tm);
        }


        if (view->getCameraManipulator())
        {
            view->setFusionDistance( view->getCameraManipulator()->getFusionDistanceMode(),
                                     view->getCameraManipulator()->getFusionDistanceValue() );

            view->getCamera()->setViewMatrix( view->getCameraManipulator()->getInverseMatrix());
        }
        view->updateSlaves();

    }

    if (getStats() && getStats()->collectStats("update"))
    {
        double endUpdateTraversal = osg::Timer::instance()->delta_s(_startTick, osg::Timer::instance()->tick());

        // update current frames stats
        getStats()->setAttribute(_frameStamp->getFrameNumber(), "Update traversal begin time", beginUpdateTraversal);
        getStats()->setAttribute(_frameStamp->getFrameNumber(), "Update traversal end time", endUpdateTraversal);
        getStats()->setAttribute(_frameStamp->getFrameNumber(), "Update traversal time taken", endUpdateTraversal-beginUpdateTraversal);
    }

}