C++ ImageLayer::getName方法代码示例

Config
EarthFileSerializer2::serialize( MapNode* input ) const
{
    Config mapConf("map");
    mapConf.set("version", "2");

    if ( !input || !input->getMap() )
        return mapConf;

    Map* map = input->getMap();
    MapFrame mapf( map, Map::ENTIRE_MODEL );

    // the map and node options:
    Config optionsConf = map->getInitialMapOptions().getConfig();
    optionsConf.merge( input->getMapNodeOptions().getConfig() );
    mapConf.add( "options", optionsConf );

    // the layers
    for( ImageLayerVector::const_iterator i = mapf.imageLayers().begin(); i != mapf.imageLayers().end(); ++i )
    {
        ImageLayer* layer = i->get();
        //Config layerConf = layer->getInitialOptions().getConfig();
        Config layerConf = layer->getImageLayerOptions().getConfig();
        layerConf.set("name", layer->getName());
        layerConf.set("driver", layer->getInitialOptions().driver()->getDriver());        
        mapConf.add( "image", layerConf );
    }

    for( ElevationLayerVector::const_iterator i = mapf.elevationLayers().begin(); i != mapf.elevationLayers().end(); ++i )
    {
        ElevationLayer* layer = i->get();
        //Config layerConf = layer->getInitialOptions().getConfig();
        Config layerConf = layer->getElevationLayerOptions().getConfig();
        layerConf.set("name", layer->getName());
        layerConf.set("driver", layer->getInitialOptions().driver()->getDriver());        
        mapConf.add( "elevation", layerConf );
    }

    for( ModelLayerVector::const_iterator i = mapf.modelLayers().begin(); i != mapf.modelLayers().end(); ++i )
    {
        ModelLayer* layer = i->get();
        Config layerConf = layer->getModelLayerOptions().getConfig();
        layerConf.set("name", layer->getName());
        layerConf.set("driver", layer->getModelLayerOptions().driver()->getDriver());
        mapConf.add( "model", layerConf );
    }

    Config ext = input->externalConfig();
    if ( !ext.empty() )
    {
        ext.key() = "external";
        mapConf.add( ext );
    }

    return mapConf;
}

void
SimpleOceanNode::rebuild()
{
    this->removeChildren( 0, this->getNumChildren() );

    osg::ref_ptr<MapNode> mapNode;
    if (_parentMapNode.lock(mapNode))
    {
        const MapOptions&     parentMapOptions     = mapNode->getMap()->getMapOptions();
        const MapNodeOptions& parentMapNodeOptions = mapNode->getMapNodeOptions();

        // set up the map to "match" the parent map:
        MapOptions mo;
        mo.coordSysType() = parentMapOptions.coordSysType();
        mo.profile()      = mapNode->getMap()->getProfile()->toProfileOptions();

        // new data model for the ocean:
        Map* oceanMap = new Map( mo );

        // ditto with the map node options:
        MapNodeOptions mno;
        if ( mno.enableLighting().isSet() )
            mno.enableLighting() = *mno.enableLighting();

        RexTerrainEngineOptions terrainoptions;

        terrainoptions.enableBlending() = true;        // gotsta blend with the main node

        terrainoptions.color() = baseColor().get();

        terrainoptions.tileSize() = 5;

        mno.setTerrainOptions( terrainoptions );

        // make the ocean's map node:
        MapNode* oceanMapNode = new MapNode( oceanMap, mno );

        // set up the shaders.
        osg::StateSet* ss = this->getOrCreateStateSet();

        // if the caller requested a mask layer, install that now.
        if ( maskLayer().isSet() )
        {
            if ( !maskLayer()->maxLevel().isSet() )
            {
                // set the max subdivision level if it's not already specified in the 
                // mask layer options:
                maskLayer()->maxLevel() = maxLOD().get();
            }

            // make sure the mask is shared (so we can access it from our shader)
            // and invisible (so we can't see it)
            maskLayer()->shared() = true;
            maskLayer()->visible() = false;

            ImageLayer* layer = new ImageLayer("ocean-mask", maskLayer().get());
            oceanMap->addLayer( layer );

            ss->setDefine("OE_SIMPLE_OCEAN_USE_MASK");
            OE_INFO << LC << "Using mask layer \"" << layer->getName() << "\"\n";
        }

        // otherwise, install a "proxy layer" that will use the elevation data in the map
        // to determine where the ocean is. This approach is limited in that it cannot
        // detect the difference between ocean and inland areas that are below sea level.
        else
        {
            // install an "elevation proxy" layer that reads elevation tiles from the
            // parent map and turns them into encoded images for our shader to use.
            ImageLayerOptions epo( "ocean-proxy" );
            epo.cachePolicy() = CachePolicy::NO_CACHE;
            epo.shared() = true;
            epo.visible() = false;
            epo.shareTexUniformName() = "oe_ocean_proxyTex";
            epo.shareTexMatUniformName() = "oe_ocean_proxyMat";
            oceanMap->addLayer( new ElevationProxyImageLayer(mapNode->getMap(), epo) );
            OE_INFO << LC << "Using elevation proxy layer\n";
        }

        this->addChild( oceanMapNode );

        // install the shaders on the ocean map node.
        VirtualProgram* vp = VirtualProgram::getOrCreate( ss );
        vp->setName( "osgEarth SimpleOcean" );        
        Shaders shaders;
        shaders.loadAll(vp, 0L);

        // set up the options uniforms.

        _seaLevel = new osg::Uniform(osg::Uniform::FLOAT, "ocean_seaLevel");
        ss->addUniform( _seaLevel.get() );

        _lowFeather = new osg::Uniform(osg::Uniform::FLOAT, "ocean_lowFeather");
        ss->addUniform( _lowFeather.get() );

        _highFeather = new osg::Uniform(osg::Uniform::FLOAT, "ocean_highFeather");
        ss->addUniform( _highFeather.get() );

        _baseColor = new osg::Uniform(osg::Uniform::FLOAT_VEC4, "ocean_baseColor");
        ss->addUniform( _baseColor.get() );
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    if( bounds.size() > 0 )
    {
        for( unsigned int i = 0; i < bounds.size(); ++i )
        {
            Bounds b = bounds[i];
            if( b.isValid() )
                packager.addExtent( GeoExtent( map->getProfile()->getSRS(), b ) );
        }
    }


    // new map for an output earth file if necessary.
    osg::ref_ptr<Map> outMap = 0L;
    if( !outEarth.empty() )
    {
        // copy the options from the source map first
        outMap = new Map( map->getInitialMapOptions() );
    }

    // establish the output path of the earth file, if applicable:
    std::string outEarthFile = osgDB::concatPaths( rootFolder, osgDB::getSimpleFileName( outEarth ) );

    // package any image layers that are enabled:
    ImageLayerVector imageLayers;
    map->getImageLayers( imageLayers );

    unsigned counter = 0;

    for( ImageLayerVector::iterator i = imageLayers.begin(); i != imageLayers.end(); ++i, ++counter )
    {
        ImageLayer* layer = i->get();
        if( layer->getImageLayerOptions().enabled() == true )
        {
            std::string layerFolder = toLegalFileName( layer->getName() );
            if( layerFolder.empty() )
                layerFolder = Stringify() << "image_layer_" << counter;

            if( verbose )
            {
                OE_NOTICE << LC << "Packaging image layer \"" << layerFolder << "\"" << std::endl;
            }

            osg::ref_ptr< ConsoleProgressCallback > progress = new ConsoleProgressCallback();
            std::string layerRoot = osgDB::concatPaths( rootFolder, layerFolder );
            TMSPackager::Result r = packager.package( layer, layerRoot, progress, extension );
            if( r.ok )
            {
                // save to the output map if requested:
                if( outMap.valid() )
                {
                    // new TMS driver info:
                    TMSOptions tms;
                    tms.url() = URI(
                        osgDB::concatPaths( layerFolder, "tms.xml" ),
                        outEarthFile );

                    ImageLayerOptions layerOptions( layer->getName(), tms );
                    layerOptions.mergeConfig( layer->getInitialOptions().getConfig( true ) );
                    layerOptions.cachePolicy() = CachePolicy::NO_CACHE;

                    outMap->addImageLayer( new ImageLayer( layerOptions ) );
                }
            }
            else
            {
                OE_WARN << LC << r.message << std::endl;

void CacheSeed::seed( Map* map )
{
    // We must do this to avoid an error message in OpenSceneGraph b/c the findWrapper method doesn't appear to be threadsafe.
    // This really isn't a big deal b/c this only effects data that is already cached.
    osgDB::ObjectWrapper* wrapper = osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper( "osg::Image" );

    osg::Timer_t startTime = osg::Timer::instance()->tick();
    if ( !map->getCache() )
    {
        OE_WARN << LC << "Warning: No cache defined; aborting." << std::endl;
        return;
    }

    std::vector<TileKey> keys;
    map->getProfile()->getRootKeys(keys);

    //Add the map's entire extent if we don't have one specified.
    if (_extents.empty())
    {
        addExtent( map->getProfile()->getExtent() );
    }

    bool hasCaches = false;
    int src_min_level = INT_MAX;
    unsigned int src_max_level = 0;

    MapFrame mapf( map, Map::TERRAIN_LAYERS, "CacheSeed::seed" );

    //Assumes the the TileSource will perform the caching for us when we call createImage
    for( ImageLayerVector::const_iterator i = mapf.imageLayers().begin(); i != mapf.imageLayers().end(); i++ )
    {
        ImageLayer* layer = i->get();
        TileSource* src   = layer->getTileSource();

        const ImageLayerOptions& opt = layer->getImageLayerOptions();

        if ( layer->isCacheOnly() )
        {
            OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" is set to cache-only; skipping." << std::endl;
        }
        else if ( !src )
        {
            OE_WARN << "Warning: Layer \"" << layer->getName() << "\" could not create TileSource; skipping." << std::endl;
        }
        //else if ( src->getCachePolicyHint(0L) == CachePolicy::NO_CACHE )
        //{
        //    OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" does not support seeding; skipping." << std::endl;
        //}
        else if ( !layer->getCache() )
        {
            OE_WARN << LC << "Notice: Layer \"" << layer->getName() << "\" has no cache defined; skipping." << std::endl;
        }
        else
        {
            hasCaches = true;

            if (opt.minLevel().isSet() && (int)opt.minLevel().get() < src_min_level)
                src_min_level = opt.minLevel().get();
            if (opt.maxLevel().isSet() && opt.maxLevel().get() > src_max_level)
                src_max_level = opt.maxLevel().get();
        }
    }

    for( ElevationLayerVector::const_iterator i = mapf.elevationLayers().begin(); i != mapf.elevationLayers().end(); i++ )
    {
        ElevationLayer* layer = i->get();
        TileSource*     src   = layer->getTileSource();
        const ElevationLayerOptions& opt = layer->getElevationLayerOptions();

        if ( layer->isCacheOnly() )
        {
            OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" is set to cache-only; skipping." << std::endl;
        }
        else if (!src)
        {
            OE_WARN << "Warning: Layer \"" << layer->getName() << "\" could not create TileSource; skipping." << std::endl;
        }
        //else if ( src->getCachePolicyHint(0L) == CachePolicy::NO_CACHE )
        //{
        //    OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" does not support seeding; skipping." << std::endl;
        //}
        else if ( !layer->getCache() )
        {
            OE_WARN << LC << "Notice: Layer \"" << layer->getName() << "\" has no cache defined; skipping." << std::endl;
        }
        else
        {
            hasCaches = true;

            if (opt.minLevel().isSet() && (int)opt.minLevel().get() < src_min_level)
                src_min_level = opt.minLevel().get();
            if (opt.maxLevel().isSet() && opt.maxLevel().get() > src_max_level)
                src_max_level = opt.maxLevel().get();
        }
    }

    if ( !hasCaches )
    {
        OE_WARN << LC << "There are either no caches defined in the map, or no sources to cache; aborting." << std::endl;
        return;
//.........这里部分代码省略.........

void CacheSeed::seed( Map* map )
{
    if ( !map->getCache() )
    {
        OE_WARN << LC << "Warning: No cache defined; aborting." << std::endl;
        return;
    }

    std::vector<TileKey> keys;
    map->getProfile()->getRootKeys(keys);

    //Add the map's entire extent if we don't have one specified.
    if (_extents.empty())
    {
        addExtent( map->getProfile()->getExtent() );
    }

    bool hasCaches = false;
    int src_min_level = INT_MAX;
    unsigned int src_max_level = 0;

    MapFrame mapf( map, Map::TERRAIN_LAYERS, "CacheSeed::seed" );

    //Assumes the the TileSource will perform the caching for us when we call createImage
    for( ImageLayerVector::const_iterator i = mapf.imageLayers().begin(); i != mapf.imageLayers().end(); i++ )
    {
        ImageLayer* layer = i->get();
        TileSource* src   = layer->getTileSource();

        const ImageLayerOptions& opt = layer->getImageLayerOptions();

        if ( layer->isCacheOnly() )
        {
            OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" is set to cache-only; skipping." << std::endl;
        }
        else if ( !src )
        {
            OE_WARN << "Warning: Layer \"" << layer->getName() << "\" could not create TileSource; skipping." << std::endl;
        }
        //else if ( src->getCachePolicyHint(0L) == CachePolicy::NO_CACHE )
        //{
        //    OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" does not support seeding; skipping." << std::endl;
        //}
        else if ( !layer->getCache() )
        {
            OE_WARN << LC << "Notice: Layer \"" << layer->getName() << "\" has no cache defined; skipping." << std::endl;
        }
        else
        {
            hasCaches = true;

            if (opt.minLevel().isSet() && (int)opt.minLevel().get() < src_min_level)
                src_min_level = opt.minLevel().get();
            if (opt.maxLevel().isSet() && opt.maxLevel().get() > src_max_level)
                src_max_level = opt.maxLevel().get();
        }
    }

    for( ElevationLayerVector::const_iterator i = mapf.elevationLayers().begin(); i != mapf.elevationLayers().end(); i++ )
    {
        ElevationLayer* layer = i->get();
        TileSource*     src   = layer->getTileSource();
        const ElevationLayerOptions& opt = layer->getElevationLayerOptions();

        if ( layer->isCacheOnly() )
        {
            OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" is set to cache-only; skipping." << std::endl;
        }
        else if (!src)
        {
            OE_WARN << "Warning: Layer \"" << layer->getName() << "\" could not create TileSource; skipping." << std::endl;
        }
        //else if ( src->getCachePolicyHint(0L) == CachePolicy::NO_CACHE )
        //{
        //    OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" does not support seeding; skipping." << std::endl;
        //}
        else if ( !layer->getCache() )
        {
            OE_WARN << LC << "Notice: Layer \"" << layer->getName() << "\" has no cache defined; skipping." << std::endl;
        }
        else
        {
            hasCaches = true;

            if (opt.minLevel().isSet() && (int)opt.minLevel().get() < src_min_level)
                src_min_level = opt.minLevel().get();
            if (opt.maxLevel().isSet() && opt.maxLevel().get() > src_max_level)
                src_max_level = opt.maxLevel().get();
        }
    }

    if ( !hasCaches )
    {
        OE_WARN << LC << "There are either no caches defined in the map, or no sources to cache; aborting." << std::endl;
        return;
    }

    if ( src_max_level > 0 && src_max_level < _maxLevel )
    {
        _maxLevel = src_max_level;
//.........这里部分代码省略.........

Config
EarthFileSerializer2::serialize(const MapNode* input, const std::string& referrer) const
{
    Config mapConf("map");
    mapConf.set("version", "2");

    if ( !input || !input->getMap() )
        return mapConf; 

    const Map* map = input->getMap();
    MapFrame mapf( map, Map::ENTIRE_MODEL );

    // the map and node options:
    Config optionsConf = map->getInitialMapOptions().getConfig();
    optionsConf.merge( input->getMapNodeOptions().getConfig() );
    mapConf.add( "options", optionsConf );

    // the layers
    for( ImageLayerVector::const_iterator i = mapf.imageLayers().begin(); i != mapf.imageLayers().end(); ++i )
    {
        ImageLayer* layer = i->get();
        //Config layerConf = layer->getInitialOptions().getConfig();
        Config layerConf = layer->getImageLayerOptions().getConfig();
        layerConf.set("name", layer->getName());
        layerConf.set("driver", layer->getInitialOptions().driver()->getDriver());        
        mapConf.add( "image", layerConf );
    }

    for( ElevationLayerVector::const_iterator i = mapf.elevationLayers().begin(); i != mapf.elevationLayers().end(); ++i )
    {
        ElevationLayer* layer = i->get();
        //Config layerConf = layer->getInitialOptions().getConfig();
        Config layerConf = layer->getElevationLayerOptions().getConfig();
        layerConf.set("name", layer->getName());
        layerConf.set("driver", layer->getInitialOptions().driver()->getDriver());        
        mapConf.add( "elevation", layerConf );
    }

    for( ModelLayerVector::const_iterator i = mapf.modelLayers().begin(); i != mapf.modelLayers().end(); ++i )
    {
        ModelLayer* layer = i->get();
        Config layerConf = layer->getModelLayerOptions().getConfig();
        layerConf.set("name", layer->getName());
        layerConf.set("driver", layer->getModelLayerOptions().driver()->getDriver());
        mapConf.add( "model", layerConf );
    }

    Config ext = input->externalConfig();
    if ( !ext.empty() )
    {
        ext.key() = "extensions";
        mapConf.add( ext );
    }

#if 1 // removed until it can be debugged.
    // Re-write pathnames in the Config so they are relative to the new referrer.
    if ( _rewritePaths && !referrer.empty() )
    {
        RewritePaths rewritePaths( referrer );
        rewritePaths.setRewriteAbsolutePaths( _rewriteAbsolutePaths );
        rewritePaths.apply( mapConf );
    }
#endif

    return mapConf;
}

//.........这里部分代码省略.........
                packager.writeXML(layer, map);
            }
        }
        else
        {
            std::cout << "Failed to find an image layer at index " << imageLayerIndex << std::endl;
            return 1;
        }
    }
    // Package an individual elevation layer
    else if (elevationLayerIndex >= 0)
    {        
        ElevationLayer* layer = map->getElevationLayerAt(elevationLayerIndex);
        if (layer)
        {
            packager.run(layer, map);
            if (writeXML)
            {
                packager.writeXML(layer, map );
            }
        }
        else
        {
            std::cout << "Failed to find an elevation layer at index " << elevationLayerIndex << std::endl;
            return 1;
        }
    }
    else
    {        
        // Package all the ImageLayer's
        for (unsigned int i = 0; i < map->getNumImageLayers(); i++)
        {            
            ImageLayer* layer = map->getImageLayerAt(i);        
            OE_NOTICE << "Packaging " << layer->getName() << std::endl;
            osg::Timer_t start = osg::Timer::instance()->tick();
            packager.run(layer, map);
            osg::Timer_t end = osg::Timer::instance()->tick();
            if (verbose)
            {
                OE_NOTICE << "Completed seeding layer " << layer->getName() << " in " << prettyPrintTime( osg::Timer::instance()->delta_s( start, end ) ) << std::endl;
            }                

            if (writeXML)
            {
                packager.writeXML(layer, map);
            }

            // save to the output map if requested:
            if( outMap.valid() )
            {
                std::string layerFolder = toLegalFileName( packager.getLayerName() );

                // new TMS driver info:
                TMSOptions tms;
                tms.url() = URI(
                    osgDB::concatPaths( layerFolder, "tms.xml" ),
                    outEarthFile );

                ImageLayerOptions layerOptions( packager.getLayerName(), tms );
                layerOptions.mergeConfig( layer->getInitialOptions().getConfig( true ) );
                layerOptions.cachePolicy() = CachePolicy::NO_CACHE;

                outMap->addImageLayer( new ImageLayer( layerOptions ) );
            }
        }    

void CacheSeed::seed( Map* map )
{
    if ( !map->getCache() )
    {
        OE_WARN << LC << "Warning: No cache defined; aborting." << std::endl;
        return;
    }

    std::vector<TileKey> keys;
    map->getProfile()->getRootKeys(keys);

    //Add the map's entire extent if we don't have one specified.
    if (_extents.empty())
    {
        addExtent( map->getProfile()->getExtent() );
    }

    bool hasCaches = false;
    int src_min_level = INT_MAX;
    unsigned int src_max_level = 0;

    MapFrame mapf( map, Map::TERRAIN_LAYERS, "CacheSeed::seed" );

    //Assumes the the TileSource will perform the caching for us when we call createImage
    for( ImageLayerVector::const_iterator i = mapf.imageLayers().begin(); i != mapf.imageLayers().end(); i++ )
    {
        ImageLayer* layer = i->get();
        TileSource* src   = layer->getTileSource();

        const ImageLayerOptions& opt = layer->getImageLayerOptions();

        if ( layer->isCacheOnly() )
        {
            OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" is set to cache-only; skipping." << std::endl;
        }
        else if ( !src )
        {
            OE_WARN << "Warning: Layer \"" << layer->getName() << "\" could not create TileSource; skipping." << std::endl;
        }
        //else if ( src->getCachePolicyHint(0L) == CachePolicy::NO_CACHE )
        //{
        //    OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" does not support seeding; skipping." << std::endl;
        //}
        else if ( !layer->getCache() )
        {
            OE_WARN << LC << "Notice: Layer \"" << layer->getName() << "\" has no cache defined; skipping." << std::endl;
        }
        else
        {
            hasCaches = true;

            if (opt.minLevel().isSet() && (int)opt.minLevel().get() < src_min_level)
                src_min_level = opt.minLevel().get();
            if (opt.maxLevel().isSet() && opt.maxLevel().get() > src_max_level)
                src_max_level = opt.maxLevel().get();
        }
    }

    for( ElevationLayerVector::const_iterator i = mapf.elevationLayers().begin(); i != mapf.elevationLayers().end(); i++ )
    {
        ElevationLayer* layer = i->get();
        TileSource*     src   = layer->getTileSource();
        const ElevationLayerOptions& opt = layer->getElevationLayerOptions();

        if ( layer->isCacheOnly() )
        {
            OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" is set to cache-only; skipping." << std::endl;
        }
        else if (!src)
        {
            OE_WARN << "Warning: Layer \"" << layer->getName() << "\" could not create TileSource; skipping." << std::endl;
        }
        //else if ( src->getCachePolicyHint(0L) == CachePolicy::NO_CACHE )
        //{
        //    OE_WARN << LC << "Warning: Layer \"" << layer->getName() << "\" does not support seeding; skipping." << std::endl;
        //}
        else if ( !layer->getCache() )
        {
            OE_WARN << LC << "Notice: Layer \"" << layer->getName() << "\" has no cache defined; skipping." << std::endl;
        }
        else
        {
            hasCaches = true;

            if (opt.minLevel().isSet() && (int)opt.minLevel().get() < src_min_level)
                src_min_level = opt.minLevel().get();
            if (opt.maxLevel().isSet() && opt.maxLevel().get() > src_max_level)
                src_max_level = opt.maxLevel().get();
        }
    }

    if ( !hasCaches )
    {
        OE_WARN << LC << "There are either no caches defined in the map, or no sources to cache; aborting." << std::endl;
        return;
    }

    if ( src_max_level > 0 && src_max_level < _maxLevel )
    {
        _maxLevel = src_max_level;
//.........这里部分代码省略.........

void
RexTerrainEngineNode::addTileLayer(Layer* tileLayer)
{
    if ( tileLayer && tileLayer->getEnabled() )
    {
        // Install the image layer stateset on this layer.
        // Later we will refactor this into an ImageLayerRenderer or something similar.
        //osg::StateSet* stateSet = tileLayer->getOrCreateStateSet();
        //stateSet->merge(*getSurfaceStateSet());

        ImageLayer* imageLayer = dynamic_cast<ImageLayer*>(tileLayer);
        if (imageLayer)
        {
            // for a shared layer, allocate a shared image unit if necessary.
            if ( imageLayer->isShared() )
            {
                optional<int>& unit = imageLayer->shareImageUnit();
                if ( !unit.isSet() )
                {
                    int temp;
                    if ( getResources()->reserveTextureImageUnit(temp) )
                    {
                        imageLayer->shareImageUnit() = temp;
                        OE_INFO << LC << "Image unit " << temp << " assigned to shared layer " << imageLayer->getName() << std::endl;
                    }
                    else
                    {
                        OE_WARN << LC << "Insufficient GPU image units to share layer " << imageLayer->getName() << std::endl;
                    }
                }

                // Build a sampler binding for the shared layer.
                if ( unit.isSet() )
                {
                    // Find the next empty SHARED slot:
                    unsigned newIndex = SamplerBinding::SHARED;
                    while (_renderBindings[newIndex].isActive())
                        ++newIndex;

                    // Put the new binding there:
                    SamplerBinding& newBinding = _renderBindings[newIndex];
                    newBinding.usage()       = SamplerBinding::SHARED;
                    newBinding.sourceUID()   = imageLayer->getUID();
                    newBinding.unit()        = unit.get();
                    newBinding.samplerName() = imageLayer->shareTexUniformName().get();
                    newBinding.matrixName()  = imageLayer->shareTexMatUniformName().get();

                    OE_INFO << LC 
                        << " .. Sampler=\"" << newBinding.samplerName() << "\", "
                        << "Matrix=\"" << newBinding.matrixName() << ", "
                        << "unit=" << newBinding.unit() << "\n";
                }
            }
        }

        else
        {
            // non-image tile layer. Keep track of these..
        }

        refresh();
    }
}

/** Packages an image layer as a TMS folder. */
int
makeTMS( osg::ArgumentParser& args )
{
    // see if the user wants to override the type extension (imagery only)
    std::string extension = "png";
    args.read( "--ext", extension );

    // verbosity?
    bool verbose = !args.read( "--quiet" );

    // find a .earth file on the command line
    std::string earthFile = findArgumentWithExtension(args, ".earth");
    if ( earthFile.empty() )
        return usage( "Missing required .earth file" );

    // folder to which to write the TMS archive.
    std::string rootFolder;
    if ( !args.read( "--out", rootFolder ) )
        rootFolder = Stringify() << earthFile << ".tms_repo";

    // max level to which to generate
    unsigned maxLevel = ~0;
    args.read( "--max-level", maxLevel );

    // load up the map
    osg::ref_ptr<MapNode> mapNode = MapNode::load( args );
    if ( !mapNode.valid() )
        return usage( "Failed to load a valid .earth file" );

    // create a folder for the output
    osgDB::makeDirectory(rootFolder);
    if ( !osgDB::fileExists(rootFolder) )
        return usage("Failed to create root output folder" );

    Map* map = mapNode->getMap();

    // fire up a packager:
    TMSPackager packager( map->getProfile() );
    packager.setVerbose( verbose );
    if ( maxLevel != ~0 )
        packager.setMaxLevel( maxLevel );
    

    // package any image layers that are enabled:
    ImageLayerVector imageLayers;
    map->getImageLayers( imageLayers );

    unsigned counter = 0;
    
    for( ImageLayerVector::iterator i = imageLayers.begin(); i != imageLayers.end(); ++i, ++counter )
    {
        ImageLayer* layer = i->get();
        if ( layer->getImageLayerOptions().enabled() == true )
        {
            std::string layerFolder = toLegalFileName( layer->getName() );
            if ( layerFolder.empty() )
                layerFolder = Stringify() << "image_layer_" << counter;

            if ( verbose )
            {
                OE_NOTICE << LC << "Packaging image layer \"" << layerFolder << "\"" << std::endl;
            }

            std::string layerRoot = osgDB::concatPaths( rootFolder, layerFolder );
            TMSPackager::Result r = packager.package( layer, layerRoot, extension );
            if ( !r.ok )
            {
                OE_WARN << LC << r.message << std::endl;
            }
        }
        else if ( verbose )
        {
            OE_NOTICE << LC << "Skipping disabled layer \"" << layer->getName() << "\"" << std::endl;
        }
    }

    // package any elevation layers that are enabled:
    counter = 0;
    ElevationLayerVector elevationLayers;
    map->getElevationLayers( elevationLayers );

    for( ElevationLayerVector::iterator i = elevationLayers.begin(); i != elevationLayers.end(); ++i, ++counter )
    {
        ElevationLayer* layer = i->get();
        if ( layer->getElevationLayerOptions().enabled() == true )
        {
            std::string layerFolder = toLegalFileName( layer->getName() );
            if ( layerFolder.empty() )
                layerFolder = Stringify() << "elevation_layer_" << counter;

            if ( verbose )
            {
                OE_NOTICE << LC << "Packaging elevation layer \"" << layerFolder << "\"" << std::endl;
            }

            std::string layerRoot = osgDB::concatPaths( rootFolder, layerFolder );
            packager.package( layer, layerRoot );
        }
        else if ( verbose )
//.........这里部分代码省略.........

void
RexTerrainEngineNode::addTileLayer(Layer* tileLayer)
{
    if ( tileLayer && tileLayer->getEnabled() )
    {
        ImageLayer* imageLayer = dynamic_cast<ImageLayer*>(tileLayer);
        if (imageLayer)
        {
            // for a shared layer, allocate a shared image unit if necessary.
            if ( imageLayer->isShared() )
            {
                if (!imageLayer->shareImageUnit().isSet())
                {
                    int temp;
                    if ( getResources()->reserveTextureImageUnit(temp, imageLayer->getName().c_str()) )
                    {
                        imageLayer->shareImageUnit() = temp;
                        //OE_INFO << LC << "Image unit " << temp << " assigned to shared layer " << imageLayer->getName() << std::endl;
                    }
                    else
                    {
                        OE_WARN << LC << "Insufficient GPU image units to share layer " << imageLayer->getName() << std::endl;
                    }
                }

                // Build a sampler binding for the shared layer.
                if ( imageLayer->shareImageUnit().isSet() )
                {
                    // Find the next empty SHARED slot:
                    unsigned newIndex = SamplerBinding::SHARED;
                    while (_renderBindings[newIndex].isActive())
                        ++newIndex;

                    // Put the new binding there:
                    SamplerBinding& newBinding = _renderBindings[newIndex];
                    newBinding.usage()       = SamplerBinding::SHARED;
                    newBinding.sourceUID()   = imageLayer->getUID();
                    newBinding.unit()        = imageLayer->shareImageUnit().get();
                    newBinding.samplerName() = imageLayer->shareTexUniformName().get();
                    newBinding.matrixName()  = imageLayer->shareTexMatUniformName().get();

                    OE_INFO << LC 
                        << "Shared Layer \"" << imageLayer->getName() << "\" : sampler=\"" << newBinding.samplerName() << "\", "
                        << "matrix=\"" << newBinding.matrixName() << "\", "
                        << "unit=" << newBinding.unit() << "\n";
                }
            }
        }

        else
        {
            // non-image tile layer. Keep track of these..
        }

        if (_terrain)
        {
            // Update the existing render models, and trigger a data reload.
            // Later we can limit the reload to an update of only the new data.
            UpdateRenderModels updateModels(_mapFrame);

#if 0
            // This uses the loaddata filter approach which will only request
            // data for one layer. It mostly works but not 100%; see hires-insets
            // as an example. Removing the world layer and re-adding it while
            // zoomed in doesn't result in all tiles reloading. Possibly a
            // synchronization issue.
            ImageLayerVector imageLayers;
            _mapFrame.getLayers(imageLayers);

            if (imageLayers.size() == 1)
                updateModels.setReloadData(true);
            else
                updateModels.layersToLoad().insert(tileLayer->getUID());
#else
            updateModels.setReloadData(true);
#endif

            _terrain->accept(updateModels);
        }
    }
}

/** Packages image and elevation layers as a TMS. */
int TMSExporter::exportTMS(MapNode* mapNode, const std::string& path, std::vector< osgEarth::Bounds >& bounds, const std::string& outEarth, bool overwrite, const std::string& extension)
{
  if ( !mapNode )
  {
    _errorMessage = "Invalid MapNode";
    if (_progress.valid()) _progress->onCompleted();
    return 0;
  }

  // folder to which to write the TMS archive.
  std::string rootFolder = path;

  osg::ref_ptr<osgDB::Options> options = new osgDB::Options(_dbOptions);

  // create a folder for the output
  osgDB::makeDirectory(rootFolder);
  if ( !osgDB::fileExists(rootFolder) )
  {
    _errorMessage = "Failed to create root output folder";
    if (_progress.valid()) _progress->onCompleted();
    return 0;
  }

  Map* map = mapNode->getMap();

  // new map for an output earth file if necessary.
  osg::ref_ptr<Map> outMap = 0L;
  if ( !outEarth.empty() )
  {
      // copy the options from the source map first
      outMap = new Map(map->getInitialMapOptions());
  }

  // establish the output path of the earth file, if applicable:
  std::string outEarthName = osgDB::getSimpleFileName(outEarth);
  if (outEarthName.length() > 0 && osgEarth::toLower(osgDB::getFileExtension(outEarthName)) != "earth")
    outEarthName += ".earth";

  std::string outEarthFile = osgDB::concatPaths(rootFolder, outEarthName);
  

  // semaphore and tasks collection for multithreading
  osgEarth::Threading::MultiEvent semaphore;
  osgEarth::TaskRequestVector tasks;
  int taskCount = 0;


  // package any image layers that are enabled and visible
  ImageLayerVector imageLayers;
  map->getImageLayers( imageLayers );

  unsigned imageCount = 0;
  for( ImageLayerVector::iterator i = imageLayers.begin(); i != imageLayers.end(); ++i, ++imageCount )
  {
      ImageLayer* layer = i->get();

      if ( layer->getEnabled() && layer->getVisible() )
      {
          std::string layerFolder = toLegalFileName( layer->getName() );
          if ( layerFolder.empty() )
              layerFolder = Stringify() << "image_layer_" << imageCount;

          ParallelTask<PackageLayer>* task = new ParallelTask<PackageLayer>( &semaphore );
          task->init(map, layer, options, rootFolder, layerFolder, true, overwrite, _keepEmpties, _maxLevel, extension, bounds);
          task->setProgressCallback(new PackageLayerProgressCallback(this));
          tasks.push_back(task);
          taskCount++;
      }
  }

  // package any elevation layers that are enabled and visible
  ElevationLayerVector elevationLayers;
  map->getElevationLayers( elevationLayers );

  int elevCount = 0;
  for( ElevationLayerVector::iterator i = elevationLayers.begin(); i != elevationLayers.end(); ++i, ++elevCount )
  {
      ElevationLayer* layer = i->get();
      if ( layer->getEnabled() && layer->getVisible() )
      {
          std::string layerFolder = toLegalFileName( layer->getName() );
          if ( layerFolder.empty() )
              layerFolder = Stringify() << "elevation_layer_" << elevCount;

          ParallelTask<PackageLayer>* task = new ParallelTask<PackageLayer>( &semaphore );
          task->init(map, layer, options, rootFolder, layerFolder, true, overwrite, _keepEmpties, _maxLevel, extension, bounds);
          task->setProgressCallback(new PackageLayerProgressCallback(this));
          tasks.push_back(task);
          taskCount++;
      }
  }


  // Run all the tasks in parallel
  _totalTasks = taskCount;
  _completedTasks = 0;

  semaphore.reset( _totalTasks );

//.........这里部分代码省略.........