C++ Cameras::end方法代码示例

void CompositeViewer::getOperationThreads(OperationThreads& threads, bool onlyActive)
{
    threads.clear();

    Contexts contexts;
    getContexts(contexts);
    for(Contexts::iterator gcitr = contexts.begin();
            gcitr != contexts.end();
            ++gcitr)
    {
        osg::GraphicsContext* gc = *gcitr;
        if (gc->getGraphicsThread() &&
                (!onlyActive || gc->getGraphicsThread()->isRunning()) )
        {
            threads.push_back(gc->getGraphicsThread());
        }
    }

    Cameras cameras;
    getCameras(cameras);
    for(Cameras::iterator citr = cameras.begin();
            citr != cameras.end();
            ++citr)
    {
        osg::Camera* camera = *citr;
        if (camera->getCameraThread() &&
                (!onlyActive || camera->getCameraThread()->isRunning()) )
        {
            threads.push_back(camera->getCameraThread());
        }
    }

}

CameraPtr cameraFindOrInsert(std::string key, std::function <CameraPtr()> createFunc)
{
  camsMutex.lock();
  CameraPtr cam;
  auto camIt = cams.find(key);
  if (camIt != cams.end()) {
    cam = camIt->second;
  } else {
    cam = createFunc();
    cams.insert({key, cam});
  }
  camsMutex.unlock();
  return cam;
}

void ViewerBase::renderingTraversals()
{
    bool _outputMasterCameraLocation = false;
    if (_outputMasterCameraLocation)
    {
        Views views;
        getViews(views);

        for(Views::iterator itr = views.begin();
            itr != views.end();
            ++itr)
        {
            osgViewer::View* view = *itr;
            if (view)
            {
                const osg::Matrixd& m = view->getCamera()->getInverseViewMatrix();
                OSG_NOTICE<<"View "<<view<<", Master Camera position("<<m.getTrans()<<"), rotation("<<m.getRotate()<<")"<<std::endl;
            }
        }
    }

    Contexts contexts;
    getContexts(contexts);

    // check to see if windows are still valid
    checkWindowStatus(contexts);
    if (_done) return;

    double beginRenderingTraversals = elapsedTime();

    osg::FrameStamp* frameStamp = getViewerFrameStamp();

    if (getViewerStats() && getViewerStats()->collectStats("scene"))
    {
        unsigned int frameNumber = frameStamp ? frameStamp->getFrameNumber() : 0;

        Views views;
        getViews(views);
        for(Views::iterator vitr = views.begin();
            vitr != views.end();
            ++vitr)
        {
            View* view = *vitr;
            osg::Stats* stats = view->getStats();
            osg::Node* sceneRoot = view->getSceneData();
            if (sceneRoot && stats)
            {
                osgUtil::StatsVisitor statsVisitor;
                sceneRoot->accept(statsVisitor);
                statsVisitor.totalUpStats();

                unsigned int unique_primitives = 0;
                osgUtil::Statistics::PrimitiveCountMap::iterator pcmitr;
                for(pcmitr = statsVisitor._uniqueStats.GetPrimitivesBegin();
                    pcmitr != statsVisitor._uniqueStats.GetPrimitivesEnd();
                    ++pcmitr)
                {
                    unique_primitives += pcmitr->second;
                }

                stats->setAttribute(frameNumber, "Number of unique StateSet", static_cast<double>(statsVisitor._statesetSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Group", static_cast<double>(statsVisitor._groupSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Transform", static_cast<double>(statsVisitor._transformSet.size()));
                stats->setAttribute(frameNumber, "Number of unique LOD", static_cast<double>(statsVisitor._lodSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Switch", static_cast<double>(statsVisitor._switchSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Geode", static_cast<double>(statsVisitor._geodeSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Drawable", static_cast<double>(statsVisitor._drawableSet.size()));
                stats->setAttribute(frameNumber, "Number of unique Geometry", static_cast<double>(statsVisitor._geometrySet.size()));
                stats->setAttribute(frameNumber, "Number of unique Vertices", static_cast<double>(statsVisitor._uniqueStats._vertexCount));
                stats->setAttribute(frameNumber, "Number of unique Primitives", static_cast<double>(unique_primitives));

                unsigned int instanced_primitives = 0;
                for(pcmitr = statsVisitor._instancedStats.GetPrimitivesBegin();
                    pcmitr != statsVisitor._instancedStats.GetPrimitivesEnd();
                    ++pcmitr)
                {
                    instanced_primitives += pcmitr->second;
                }

                stats->setAttribute(frameNumber, "Number of instanced Stateset", static_cast<double>(statsVisitor._numInstancedStateSet));
                stats->setAttribute(frameNumber, "Number of instanced Group", static_cast<double>(statsVisitor._numInstancedGroup));
                stats->setAttribute(frameNumber, "Number of instanced Transform", static_cast<double>(statsVisitor._numInstancedTransform));
                stats->setAttribute(frameNumber, "Number of instanced LOD", static_cast<double>(statsVisitor._numInstancedLOD));
                stats->setAttribute(frameNumber, "Number of instanced Switch", static_cast<double>(statsVisitor._numInstancedSwitch));
                stats->setAttribute(frameNumber, "Number of instanced Geode", static_cast<double>(statsVisitor._numInstancedGeode));
                stats->setAttribute(frameNumber, "Number of instanced Drawable", static_cast<double>(statsVisitor._numInstancedDrawable));
                stats->setAttribute(frameNumber, "Number of instanced Geometry", static_cast<double>(statsVisitor._numInstancedGeometry));
                stats->setAttribute(frameNumber, "Number of instanced Vertices", static_cast<double>(statsVisitor._instancedStats._vertexCount));
                stats->setAttribute(frameNumber, "Number of instanced Primitives", static_cast<double>(instanced_primitives));
           }
        }
    }

    Scenes scenes;
    getScenes(scenes);

    for(Scenes::iterator sitr = scenes.begin();
        sitr != scenes.end();
        ++sitr)
    {
//.........这里部分代码省略.........

void ViewerBase::startThreading()
{
    if (_threadsRunning) return;

    OSG_INFO<<"Viewer::startThreading() - starting threading"<<std::endl;

    // release any context held by the main thread.
    releaseContext();

    _threadingModel = _threadingModel==AutomaticSelection ? suggestBestThreadingModel() : _threadingModel;

    Contexts contexts;
    getContexts(contexts);

    OSG_INFO<<"Viewer::startThreading() - contexts.size()="<<contexts.size()<<std::endl;

    Cameras cameras;
    getCameras(cameras);

    unsigned int numThreadsOnStartBarrier = 0;
    unsigned int numThreadsOnEndBarrier = 0;
    switch(_threadingModel)
    {
        case(SingleThreaded):
            numThreadsOnStartBarrier = 1;
            numThreadsOnEndBarrier = 1;
            return;
        case(CullDrawThreadPerContext):
            numThreadsOnStartBarrier = contexts.size()+1;
            numThreadsOnEndBarrier = contexts.size()+1;
            break;
        case(DrawThreadPerContext):
            numThreadsOnStartBarrier = 1;
            numThreadsOnEndBarrier = 1;
            break;
        case(CullThreadPerCameraDrawThreadPerContext):
            numThreadsOnStartBarrier = cameras.size()+1;
            numThreadsOnEndBarrier = 1;
            break;
        default:
            OSG_NOTICE<<"Error: Threading model not selected"<<std::endl;
            return;
    }

    // using multi-threading so make sure that new objects are allocated with thread safe ref/unref
    osg::Referenced::setThreadSafeReferenceCounting(true);

    Scenes scenes;
    getScenes(scenes);
    for(Scenes::iterator scitr = scenes.begin();
        scitr != scenes.end();
        ++scitr)
    {
        if ((*scitr)->getSceneData())
        {
            OSG_INFO<<"Making scene thread safe"<<std::endl;

            // make sure that existing scene graph objects are allocated with thread safe ref/unref
            (*scitr)->getSceneData()->setThreadSafeRefUnref(true);

            // update the scene graph so that it has enough GL object buffer memory for the graphics contexts that will be using it.
            (*scitr)->getSceneData()->resizeGLObjectBuffers(osg::DisplaySettings::instance()->getMaxNumberOfGraphicsContexts());
        }
    }

    int numProcessors = OpenThreads::GetNumberOfProcessors();
    bool affinity = numProcessors>1;

    Contexts::iterator citr;

    unsigned int numViewerDoubleBufferedRenderingOperation = 0;

    bool graphicsThreadsDoesCull = _threadingModel == CullDrawThreadPerContext || _threadingModel==SingleThreaded;

    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer)
        {
            renderer->setGraphicsThreadDoesCull(graphicsThreadsDoesCull);
            renderer->setDone(false);
            renderer->reset();
            ++numViewerDoubleBufferedRenderingOperation;
        }
    }

    if (_threadingModel==CullDrawThreadPerContext)
    {
        _startRenderingBarrier = 0;
        _endRenderingDispatchBarrier = 0;
        _endDynamicDrawBlock = 0;
    }
    else if (_threadingModel==DrawThreadPerContext ||
             _threadingModel==CullThreadPerCameraDrawThreadPerContext)
    {
        _startRenderingBarrier = 0;
        _endRenderingDispatchBarrier = 0;
//.........这里部分代码省略.........

void ViewerBase::stopThreading()
{
    if (!_threadsRunning) return;

    OSG_INFO<<"ViewerBase::stopThreading() - stopping threading"<<std::endl;

    Contexts contexts;
    getContexts(contexts);

    Cameras cameras;
    getCameras(cameras);

    Contexts::iterator gcitr;
    Cameras::iterator citr;

    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer) renderer->release();
    }

    // delete all the graphics threads.
    for(gcitr = contexts.begin();
        gcitr != contexts.end();
        ++gcitr)
    {
        (*gcitr)->setGraphicsThread(0);
    }

    // delete all the camera threads.
    for(citr = cameras.begin();
        citr != cameras.end();
        ++citr)
    {
        (*citr)->setCameraThread(0);
    }

    for(Cameras::iterator camItr = cameras.begin();
        camItr != cameras.end();
        ++camItr)
    {
        osg::Camera* camera = *camItr;
        Renderer* renderer = dynamic_cast<Renderer*>(camera->getRenderer());
        if (renderer)
        {
            renderer->setGraphicsThreadDoesCull( true );
            renderer->setDone(false);
        }
    }


    _threadsRunning = false;
    _startRenderingBarrier = 0;
    _endRenderingDispatchBarrier = 0;
    _endDynamicDrawBlock = 0;

    OSG_INFO<<"Viewer::stopThreading() - stopped threading."<<std::endl;
}