예제 #1
0
    void onHit(ObjectID id)
    {
        // First see whether it's a feature:
        FeatureIndex* index = Registry::objectIndex()->get<FeatureIndex>( id );
        Feature* feature = index ? index->getFeature( id ) : 0L;

        if ( feature )
        {
            s_fidLabel->setText( Stringify() << "Feature ID = " << feature->getFID() << " (oid = " << id << ")" );
            s_nameLabel->setText( Stringify() << "Name = " << feature->getString("name") );
        }

        else
        {
            // Check whether it's an annotation:
            AnnotationNode* anno = Registry::objectIndex()->get<AnnotationNode>( id );
            if ( anno )
            {
                s_fidLabel->setText( Stringify() << "ObjectID = " << id );
                s_nameLabel->setName( Stringify() << "Name = " << anno->getName() );
            }

            // None of the above.. clear.
            else
            {
                s_fidLabel->setText( Stringify() << "oid = " << id );
                s_nameLabel->setText( "Name = " );
            }
        }

        s_highlightUniform->set( id );
    }
예제 #2
0
AnnotationNode*
AnnotationRegistry::createOne( MapNode* mapNode, const Config& conf, bool declutterOrthos ) const
{
    FactoryMap::const_iterator f = _factories.find( conf.key() );
    if ( f != _factories.end() && f->second != 0L )
    {
        AnnotationNode* anno = f->second->create(mapNode, conf);
        if ( anno )
        {
            if ( declutterOrthos && dynamic_cast<SupportsDecluttering*>(anno) )
            {
                Decluttering::setEnabled( anno->getOrCreateStateSet(), true );
            }

            return anno;
        }
    }
    return 0L;
}
void LOSCreationDialog::centerMapOnNode(osg::Node* node)
{
  if (node && _map.valid() && _manager.valid() && _views)
  {
    AnnotationNode* annoNode = dynamic_cast<AnnotationNode*>(node);
    if (annoNode && annoNode->getAnnotationData() && annoNode->getAnnotationData()->getViewpoint())
    {
      _manager->doAction(this, new SetViewpointAction(osgEarth::Viewpoint(*annoNode->getAnnotationData()->getViewpoint()), *_views));
    }
    else
    {
      osg::Vec3d center = node->getBound().center();

      GeoPoint output;
      _map->worldPointToMapPoint(center, output);

      _manager->doAction(this, new SetViewpointAction(osgEarth::Viewpoint(output.vec3d(), 0.0, -90.0, 1e5), *_views));
    }
  }
}
예제 #4
0
bool
HighlightDecoration::apply(AnnotationNode& node, bool enable)
{
    if ( _supported )
    {
        osg::StateSet* ss = node.getOrCreateStateSet();
        if ( enable )
        {
            VirtualProgram* vp = VirtualProgram::getOrCreate( ss );
            if ( vp->getShader(FRAG_FUNCTION) == 0L )
            {
                vp->setFunction(FRAG_FUNCTION, fragSource, ShaderComp::LOCATION_FRAGMENT_COLORING);
                ss->addUniform( _colorUniform.get() );
            }
            _colorUniform->set(_color);
        }
        else
        {
            // sets alpha=0 to disable highlighting
            _colorUniform->set(osg::Vec4f(1,1,1,0));
        }
    }
    return _supported;
}
예제 #5
0
bool
InjectionDecoration::apply(AnnotationNode& node, bool enable)
{
    bool success = apply( node.getChildAttachPoint(), enable );
    return success ? true : Decoration::apply(node, enable);
}
예제 #6
0
void 
KML_Placemark::build( xml_node<>* node, KMLContext& cx )
{
	Style masterStyle;

	std::string styleUrl = getValue(node, "styleurl");

	if (!styleUrl.empty())
	{	// process a "stylesheet" style
		const Style* ref_style = cx._sheet->getStyle( styleUrl, false );
		if (ref_style)
		{
			masterStyle = masterStyle.combineWith(*ref_style);
		}
	}

	xml_node<>* style = node->first_node("style", 0, false);
	if ( style )
	{	// process an "inline" style
		KML_Style kmlStyle;
		kmlStyle.scan(style, cx);
		masterStyle = masterStyle.combineWith(cx._activeStyle);
	}

    // parse the geometry. the placemark must have geometry to be valid. The 
    // geometry parse may optionally specify an altitude mode as well.
    KML_Geometry geometry;
    geometry.build(node, cx, masterStyle);

    Geometry* allGeom = geometry._geom.get();
    if ( allGeom )
    {
        GeometryIterator giter( allGeom, false );
        while( giter.hasMore() )
        {
            Geometry* geom = giter.next();
            Style style = masterStyle;

            AltitudeSymbol* alt = style.get<AltitudeSymbol>();
            
            if ( geom && geom->getTotalPointCount() > 0 )
            {
                // resolve the proper altitude mode for the anchor point
                AltitudeMode altMode = ALTMODE_RELATIVE;
                if (alt && 
                    !alt->clamping().isSetTo( alt->CLAMP_TO_TERRAIN ) &&
                    !alt->clamping().isSetTo( alt->CLAMP_RELATIVE_TO_TERRAIN ) )
                {
                    altMode = ALTMODE_ABSOLUTE;
                }

                GeoPoint position(cx._srs.get(), geom->getBounds().center(), altMode);

                bool isPoly = geom->getComponentType() == Geometry::TYPE_POLYGON;
                bool isPoint = geom->getComponentType() == Geometry::TYPE_POINTSET;

                // check for symbols.
                ModelSymbol*    model = style.get<ModelSymbol>();
                IconSymbol*     icon  = style.get<IconSymbol>();
                TextSymbol*     text  = style.get<TextSymbol>();

                // the annotation name:
                std::string name = getValue(node, "name");

                AnnotationNode* featureNode = 0L;
                AnnotationNode* iconNode    = 0L;
                AnnotationNode* modelNode   = 0L;

                // one coordinate? It's a place marker or a label.
                if ( (model || icon || text) && geom->getTotalPointCount() == 1 )
                {
                    // load up the default icon if there we don't have one.
                    if ( !model && !icon )
                    {
                        icon = cx._options->defaultIconSymbol().get();
                        if ( icon )
                            style.add( icon );
                    }

                    // if there's a model, render that - models do NOT get labels.
                    if ( model )
                    {
                        ModelNode* node = new ModelNode( cx._mapNode, style, cx._dbOptions );
                        node->setPosition( position );

                        // model scale:
                        if ( cx._options->modelScale() != 1.0f )
                        {
                            float s = *cx._options->modelScale();
                            node->setScale( osg::Vec3f(s,s,s) );
                        }

                        // model local tangent plane rotation:
                        if ( !cx._options->modelRotation()->zeroRotation() )
                        {
                            node->setLocalRotation( *cx._options->modelRotation() );
                        }

                        modelNode = node;
                    }

                    // is there a label?
                    else if ( !name.empty() )
                    {
                        if ( !text && cx._options->defaultTextSymbol().valid() )
                        {
                            text = cx._options->defaultTextSymbol().get();
                            style.addSymbol( text );

                        }
                        else
                        {
                            text = style.getOrCreate<TextSymbol>();
                            text->encoding() = TextSymbol::ENCODING_UTF8;
                        }
                        text->content()->setLiteral( name );
                    }

                    // is there an icon?
                    if ( icon )
                    {
                        iconNode = new PlaceNode( cx._mapNode, position, style, cx._dbOptions );
                    }

                    else if ( !model && text && !name.empty() )
                    {
                        // note: models do not get labels.
                        iconNode = new LabelNode( cx._mapNode, position, style );
                    }
                }

                // multiple coords? feature:
                if ( geom->getTotalPointCount() > 1 )
                {
                    ExtrusionSymbol* extruded = style.get<ExtrusionSymbol>();

                    // Remove symbols that we have already processed so the geometry
                    // compiler doesn't get confused.
                    if ( model )
                        style.removeSymbol( model );
                    if ( icon )
                        style.removeSymbol( icon );
                    if ( text )
                        style.removeSymbol( text );

                    Feature* feature = new Feature(geom, cx._srs.get(), style);
                    featureNode = new FeatureNode( cx._mapNode, feature );
                }


                // assemble the results:
                if ( (iconNode || modelNode) && featureNode )
                {
                    osg::Group* group = new osg::Group();
                    group->addChild( featureNode );
                    if ( iconNode )
                        group->addChild( iconNode );
                    if ( modelNode )
                        group->addChild( modelNode );

                    cx._groupStack.top()->addChild( group );

                    if ( iconNode && cx._options->declutter() == true )
                    {
                        Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
                    }

                    if ( iconNode )
                        KML_Feature::build( node, cx, iconNode );
                    if ( modelNode )
                        KML_Feature::build( node, cx, modelNode );
                    if ( featureNode )
                        KML_Feature::build( node, cx, featureNode );
                }

                else
                {
                    if ( iconNode )
                    {
                        if ( cx._options->iconAndLabelGroup().valid() )
                        {
                            cx._options->iconAndLabelGroup()->addChild( iconNode );
                        }
                        else
                        {
                            cx._groupStack.top()->addChild( iconNode );
                            if ( cx._options->declutter() == true )
                            {
                                Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
                            }
                        }
                        KML_Feature::build( node, cx, iconNode );
                    }
                    if ( modelNode )
                    {
                        cx._groupStack.top()->addChild( modelNode );
                        KML_Feature::build( node, cx, modelNode );
                    }
                    if ( featureNode )
                    {
                        cx._groupStack.top()->addChild( featureNode );
                        KML_Feature::build( node, cx, featureNode );
                    }
                }
            }
        }
    }
}
예제 #7
0
void 
KML_Placemark::build( xml_node<>* node, KMLContext& cx )
{
	Style masterStyle;

	std::string styleUrl = getValue(node, "styleurl");

	if (!styleUrl.empty())
	{	// process a "stylesheet" style
		const Style* ref_style = cx._sheet->getStyle( styleUrl, false );
		if (ref_style)
		{
			masterStyle = masterStyle.combineWith(*ref_style);
		}
	}

	xml_node<>* style = node->first_node("style", 0, false);
	if ( style )
	{	// process an "inline" style
		KML_Style kmlStyle;
		kmlStyle.scan(style, cx);
		masterStyle = masterStyle.combineWith(cx._activeStyle);
	}

    // parse the geometry. the placemark must have geometry to be valid. The 
    // geometry parse may optionally specify an altitude mode as well.
    KML_Geometry geometry;
    geometry.build(node, cx, masterStyle);

    Geometry* allGeom = geometry._geom.get();
    if ( allGeom )
    {
        GeometryIterator giter( allGeom, false );
        while( giter.hasMore() )
        {
            Geometry* geom = giter.next();
            Style style = masterStyle;

            AltitudeSymbol* alt = style.get<AltitudeSymbol>();
            
            if ( geom && geom->getTotalPointCount() > 0 )
            {
                // resolve the proper altitude mode for the anchor point
                AltitudeMode altMode = ALTMODE_RELATIVE;
                if (alt && 
                    !alt->clamping().isSetTo( alt->CLAMP_TO_TERRAIN ) &&
                    !alt->clamping().isSetTo( alt->CLAMP_RELATIVE_TO_TERRAIN ) )
                {
                    altMode = ALTMODE_ABSOLUTE;
                }

                GeoPoint position(cx._srs.get(), geom->getBounds().center(), altMode);

                // check for symbols.
                ModelSymbol* model = style.get<ModelSymbol>();
                IconSymbol*  icon  = style.get<IconSymbol>();
                TextSymbol*  text  = style.get<TextSymbol>();

                // for a single point placemark, apply the default icon and text symbols
                // if none are specified in the KML.
                if (geom->getTotalPointCount() == 1)
                {
                    if (!model && !icon && cx._options->defaultIconSymbol().valid())
                    {
                        icon = cx._options->defaultIconSymbol().get();
                        style.add(icon);
                    }

                    if (!text && cx._options->defaultTextSymbol().valid())
                    {
                        text = cx._options->defaultTextSymbol().get();
                        style.add(text);
                    }
                }

                // the annotation name:
                std::string name = getValue(node, "name");

                if (!name.empty())
                {
                    OE_INFO << LC << "Placemark: " << name << std::endl;
                }

                AnnotationNode* featureNode = 0L;
                AnnotationNode* iconNode    = 0L;
                AnnotationNode* modelNode   = 0L;

                // one coordinate? It's a place marker or a label.
                if ( (model || icon || text) && geom->getTotalPointCount() == 1 )
                {
                    // if there's a model, render that - models do NOT get labels.
                    if ( model )
                    {
                        ModelNode* node = new ModelNode( cx._mapNode, style, cx._dbOptions.get() );
                        node->setPosition( position );

                        // model scale:
                        if ( cx._options->modelScale() != 1.0f )
                        {
                            float s = *cx._options->modelScale();
                            node->getPositionAttitudeTransform()->setScale(osg::Vec3d(s,s,s));
                        }

                        // model local tangent plane rotation:
                        if ( !cx._options->modelRotation()->zeroRotation() )
                        {
                            node->getPositionAttitudeTransform()->setAttitude( *cx._options->modelRotation() );
                        }

                        modelNode = node;
                    }

                    // is there a label?
                    else if ( !name.empty() )
                    {
                        if ( !text )
                        {
                            text = style.getOrCreate<TextSymbol>();
                            text->encoding() = TextSymbol::ENCODING_UTF8;
                        }
                        text->content()->setLiteral( name );
                    }

                    // is there an icon?
                    if ( icon )
                    {
                        PlaceNode* placeNode = new PlaceNode( position );
                        placeNode->setStyle(style, cx._dbOptions.get());
                        iconNode = placeNode;
                    }

                    else if ( !model && text && !name.empty() )
                    {
                        // note: models do not get labels.
                        iconNode = new LabelNode();
                        iconNode->setStyle(style);
                    }
                }

                // multiple coords? feature:
                if ( geom->getTotalPointCount() > 1 )
                {
                    // Remove symbols that we have already processed so the geometry
                    // compiler doesn't get confused.
                    if ( model )
                        style.removeSymbol( model );
                    if ( icon )
                        style.removeSymbol( icon );
                    if ( text )
                        style.removeSymbol( text );

                    Feature* feature = new Feature(geom, cx._srs.get(), style);
                    featureNode = new FeatureNode(feature );
                    featureNode->setMapNode( cx._mapNode );
                }

                if ( iconNode )
                {
                    Registry::objectIndex()->tagNode( iconNode, iconNode );
                }

                if ( modelNode )
                {
                    Registry::objectIndex()->tagNode( modelNode, modelNode );
                }

                if ( featureNode )
                {
                    Registry::objectIndex()->tagNode( featureNode, featureNode );
                }


                // assemble the results:
                if ( (iconNode || modelNode) && featureNode )
                {
                    osg::Group* group = new osg::Group();
                    group->addChild( featureNode );
                    if ( iconNode )
                        group->addChild( iconNode );
                    if ( modelNode )
                        group->addChild( modelNode );

                    cx._groupStack.top()->addChild( group );

                    if ( iconNode )
                        KML_Feature::build( node, cx, iconNode );
                    if ( modelNode )
                        KML_Feature::build( node, cx, modelNode );
                    if ( featureNode )
                        KML_Feature::build( node, cx, featureNode );
                }

                else
                {
                    if ( iconNode )
                    {
                        if ( cx._options->iconAndLabelGroup().valid() )
                        {
                            cx._options->iconAndLabelGroup()->addChild( iconNode );
                        }
                        else
                        {
                            cx._groupStack.top()->addChild( iconNode );
                        }
                        KML_Feature::build( node, cx, iconNode );
                    }
                    if ( modelNode )
                    {
                        cx._groupStack.top()->addChild( modelNode );
                        KML_Feature::build( node, cx, modelNode );
                    }
                    if ( featureNode )
                    {
                        osg::Node* child = featureNode;

                        // If this feature node is map-clamped, we most likely need a depth-offset
                        // shader to prevent z-fighting with the terrain.
                        if (alt && alt->clamping() == alt->CLAMP_TO_TERRAIN && alt->technique() == alt->TECHNIQUE_MAP)
                        {
                            DepthOffsetGroup* g = new DepthOffsetGroup();
                            g->addChild( featureNode );
                            child = g;
                        }
                
                        cx._groupStack.top()->addChild( child );
                        KML_Feature::build( node, cx, featureNode );
                    }
                }
            }
        }
    }
}
예제 #8
0
void 
KML_Placemark::build( const Config& conf, KMLContext& cx )
{
    Style style;
    if ( conf.hasValue("styleurl") )
    {
        // process a "stylesheet" style
        const Style* ref_style = cx._sheet->getStyle( conf.value("styleurl"), false );
        if ( ref_style )
            style = *ref_style;
    }
    else if ( conf.hasChild("style") )
    {
        // process an "inline" style
        KML_Style kmlStyle;
        kmlStyle.scan( conf.child("style"), cx );
        style = cx._activeStyle;
    }

    // parse the geometry. the placemark must have geometry to be valid. The 
    // geometry parse may optionally specify an altitude mode as well.
    KML_Geometry geometry;
    geometry.build(conf, cx, style);

    // KML's default altitude mode is clampToGround.
    AltitudeMode altMode = ALTMODE_RELATIVE;

    AltitudeSymbol* altSym = style.get<AltitudeSymbol>();
    if ( !altSym )
    {
        altSym = style.getOrCreate<AltitudeSymbol>();
        altSym->clamping() = AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN;
    }
    else if ( !altSym->clamping().isSetTo(AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN) )
    {
        altMode = ALTMODE_ABSOLUTE;
    }
    
    if ( geometry._geom.valid() && geometry._geom->getTotalPointCount() > 0 )
    {
        Geometry* geom = geometry._geom.get();

        GeoPoint position(cx._srs.get(), geom->getBounds().center(), altMode);

        bool isPoly = geom->getComponentType() == Geometry::TYPE_POLYGON;
        bool isPoint = geom->getComponentType() == Geometry::TYPE_POINTSET;

        // read in the Marker if there is one.
        URI                      markerURI;
        osg::ref_ptr<osg::Image> markerImage;
        osg::ref_ptr<osg::Node>  markerModel;

        MarkerSymbol* marker = style.get<MarkerSymbol>();

        if ( marker && marker->url().isSet() )
        {
            if ( marker->isModel() == false )
            {
                markerImage = marker->getImage( *cx._options->iconMaxSize() );
            }
            else
            {
                markerURI = URI( marker->url()->eval(), marker->url()->uriContext() );
                markerModel = markerURI.getNode();

                // We can't leave the marker symbol in the style, or the GeometryCompiler will
                // think we want to do Point-model substitution. So remove it. A bit of a hack
                if ( marker )
                    style.removeSymbol(marker);
            }
        }

        std::string text = conf.hasValue("name") ? conf.value("name") : "";

        AnnotationNode* fNode = 0L;
        AnnotationNode* pNode = 0L;

        // place a 3D model:
        if ( markerModel.valid() )
        {
            LocalGeometryNode* lg = new LocalGeometryNode(cx._mapNode, markerModel.get(), style, false);
            lg->setPosition( position );
            if ( marker )
            {
                if ( marker->scale().isSet() )
                {
                    float scale = marker->scale()->eval();
                    lg->setScale( osg::Vec3f(scale,scale,scale) );
                }
                if ( marker->orientation().isSet() )
                {
                   // lg->setRotation( );
                }
            }

            fNode = lg;
            //Feature* feature = new Feature(geometry._geom.get(), cx._srs.get(), style);
            //fNode = new FeatureNode( cx._mapNode, feature, false );
        }

        // Place node (icon + text) or Label node (text only)
        else if ( marker || geometry._geom->getTotalPointCount() == 1 )
        {
            if ( !markerImage.valid() )
            {
                markerImage = cx._options->defaultIconImage().get();
                if ( !markerImage.valid() )
                {
                    markerImage = cx._options->defaultIconURI()->getImage();
                }
            }
            
            if ( !style.get<TextSymbol>() && cx._options->defaultTextSymbol().valid() )
            {
                style.addSymbol( cx._options->defaultTextSymbol().get() );
            }

            if ( markerImage.valid() )
                pNode = new PlaceNode( cx._mapNode, position, markerImage.get(), text, style );
            else
                pNode = new LabelNode( cx._mapNode, position, text, style );
        }

        if ( geometry._geom->getTotalPointCount() > 1 )
        {
            const ExtrusionSymbol* ex = style.get<ExtrusionSymbol>();
            const AltitudeSymbol* alt = style.get<AltitudeSymbol>();    

            if ( style.get<MarkerSymbol>() )
                style.removeSymbol(style.get<MarkerSymbol>());

            bool draped =
                isPoly   && 
                ex == 0L && 
                (alt == 0L || alt->clamping() == AltitudeSymbol::CLAMP_TO_TERRAIN);

            // Make a feature node; drape if we're not extruding.
            GeometryCompilerOptions options;
            options.clustering() = false;            
            Feature* feature = new Feature(geometry._geom.get(), cx._srs.get(), style);
            fNode = new FeatureNode( cx._mapNode, feature, draped, options );

            if ( !ex )
            {
                fNode->getOrCreateStateSet()->setMode(GL_LIGHTING, 0);
            }
        }
        
        if ( pNode && fNode )
        {
            osg::Group* group = new osg::Group();
            group->addChild( fNode );
            group->addChild( pNode );
            cx._groupStack.top()->addChild( group );
            if ( cx._options->declutter() == true )
                Decluttering::setEnabled( pNode->getOrCreateStateSet(), true );
            KML_Feature::build( conf, cx, pNode );
            KML_Feature::build( conf, cx, fNode );
        }

        else if ( pNode )
        {
            if ( cx._options->iconAndLabelGroup().valid() )
            {
                cx._options->iconAndLabelGroup()->addChild( pNode );
            }
            else
            {
                cx._groupStack.top()->addChild( pNode );
                if ( cx._options->declutter() == true )
                    Decluttering::setEnabled( pNode->getOrCreateStateSet(), true );
            }
            KML_Feature::build( conf, cx, pNode );
        }

        else if ( fNode )
        {
            cx._groupStack.top()->addChild( fNode );
            KML_Feature::build( conf, cx, fNode );
        }
    }
}
예제 #9
0
 void onTileAdded( const TileKey& key, osg::Node* tile, TerrainCallbackContext& context )
 {
     AnnotationNode* anno = static_cast<AnnotationNode*>(context.getClientData());
     anno->reclamp( key, tile, context.getTerrain() );
 }
예제 #10
0
void 
KML_Placemark::build( const Config& conf, KMLContext& cx )
{
    Style masterStyle;

    if ( conf.hasValue("styleurl") )
    {
        // process a "stylesheet" style
        const Style* ref_style = cx._sheet->getStyle( conf.value("styleurl"), false );
        if ( ref_style )
            masterStyle = *ref_style;
    }
    else if ( conf.hasChild("style") )
    {
        // process an "inline" style
        KML_Style kmlStyle;
        kmlStyle.scan( conf.child("style"), cx );
        masterStyle = cx._activeStyle;
    }

    // parse the geometry. the placemark must have geometry to be valid. The 
    // geometry parse may optionally specify an altitude mode as well.
    KML_Geometry geometry;
    geometry.build(conf, cx, masterStyle);

    Geometry* allGeom = geometry._geom.get();
    if ( allGeom )
    {
        GeometryIterator giter( allGeom, false );
        while( giter.hasMore() )
        {
            Geometry* geom = giter.next();
            Style style = masterStyle;

            // KML's default altitude mode is clampToGround.
            AltitudeMode altMode = ALTMODE_RELATIVE;

            AltitudeSymbol* altSym = style.get<AltitudeSymbol>();
            if ( !altSym )
            {
                altSym = style.getOrCreate<AltitudeSymbol>();
                altSym->clamping() = AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN;
                altSym->technique() = AltitudeSymbol::TECHNIQUE_SCENE;
            }
            else if ( !altSym->clamping().isSetTo(AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN) )
            {
                altMode = ALTMODE_ABSOLUTE;
            }
            
            if ( geom && geom->getTotalPointCount() > 0 )
            {
                GeoPoint position(cx._srs.get(), geom->getBounds().center(), altMode);

                bool isPoly = geom->getComponentType() == Geometry::TYPE_POLYGON;
                bool isPoint = geom->getComponentType() == Geometry::TYPE_POINTSET;

                // check for symbols.
                ModelSymbol*    model = style.get<ModelSymbol>();
                IconSymbol*     icon  = style.get<IconSymbol>();
                TextSymbol*     text  = style.get<TextSymbol>();

                if ( !text && cx._options->defaultTextSymbol().valid() )
                    text = cx._options->defaultTextSymbol().get();

                // the annotation name:
                std::string name = conf.hasValue("name") ? conf.value("name") : "";
                if ( text && !name.empty() )
                {
                    text->content()->setLiteral( name );
                }

                AnnotationNode* featureNode = 0L;
                AnnotationNode* iconNode    = 0L;
                AnnotationNode* modelNode   = 0L;

                // one coordinate? It's a place marker or a label.
                if ( model || icon || text || geom->getTotalPointCount() == 1 )
                {
                    // load up the default icon if there we don't have one.
                    if ( !model && !icon )
                    {
                        icon = cx._options->defaultIconSymbol().get();
                        if ( icon )
                            style.add( icon );
                    }

                    // if there's a model, render that - models do NOT get labels.
                    if ( model )
                    {
                        ModelNode* node = new ModelNode( cx._mapNode, style, cx._dbOptions );
                        node->setPosition( position );

                        if ( cx._options->modelScale() != 1.0f )
                        {
                            float s = *cx._options->modelScale();
                            node->setScale( osg::Vec3f(s,s,s) );
                        }

                        if ( !cx._options->modelRotation()->zeroRotation() )
                        {
                            node->setLocalRotation( *cx._options->modelRotation() );
                        }

                        modelNode = node;
                    }

                    else if ( !text && !name.empty() )
                    {
                        text = style.getOrCreate<TextSymbol>();
                        text->content()->setLiteral( name );
                    }

                    if ( icon )
                    {
                        iconNode = new PlaceNode( cx._mapNode, position, style, cx._dbOptions );
                    }

                    else if ( !model && text && !name.empty() )
                    {
                        // note: models do not get labels.
                        iconNode = new LabelNode( cx._mapNode, position, style );
                    }
                }

                // multiple coords? feature:
                if ( geom->getTotalPointCount() > 1 )
                {
                    ExtrusionSymbol* extruded = style.get<ExtrusionSymbol>();
                    AltitudeSymbol*  altitude = style.get<AltitudeSymbol>();

                    // Remove symbols that we have already processed so the geometry
                    // compiler doesn't get confused.
                    if ( model )
                        style.removeSymbol( model );
                    if ( icon )
                        style.removeSymbol( icon );
                    if ( text )
                        style.removeSymbol( text );

                    // analyze the data; if the Z coords are all 0.0, enable draping.
                    if ( /*isPoly &&*/ !extruded && altitude && altitude->clamping() != AltitudeSymbol::CLAMP_TO_TERRAIN )
                    {
                        bool zeroElev = true;
                        ConstGeometryIterator gi( geom, false );
                        while( zeroElev == true && gi.hasMore() )
                        {
                            const Geometry* g = gi.next();
                            for( Geometry::const_iterator ji = g->begin(); ji != g->end() && zeroElev == true; ++ji )
                            {
                                if ( !osg::equivalent(ji->z(), 0.0) )
                                    zeroElev = false;
                            }
                        }
                        if ( zeroElev )
                        {
                            altitude->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;
                            altitude->technique() = AltitudeSymbol::TECHNIQUE_GPU;
                        }
                    }

                    // Make a feature node; drape if we're not extruding.
                    bool draped =
                        isPoly    && 
                        !extruded &&
                        (!altitude || altitude->clamping() == AltitudeSymbol::CLAMP_TO_TERRAIN);

                    if ( draped && style.get<LineSymbol>() && !style.get<PolygonSymbol>() )
                    {
                        draped = false;
                    }

                    // turn off the clamping if we're draping.
                    if ( draped && altitude )
                    {
                        altitude->technique() = AltitudeSymbol::TECHNIQUE_DRAPE;
                    }

                    GeometryCompilerOptions compilerOptions;

                    // Check for point-model substitution:
                    if ( style.has<ModelSymbol>() )
                    {
                        compilerOptions.instancing() = true;
                    }

                    Feature* feature = new Feature(geom, cx._srs.get(), style);
                    featureNode = new FeatureNode( cx._mapNode, feature, draped, compilerOptions );
                }


                // assemble the results:
                if ( (iconNode || modelNode) && featureNode )
                {
                    osg::Group* group = new osg::Group();
                    group->addChild( featureNode );
                    if ( iconNode )
                        group->addChild( iconNode );
                    if ( modelNode )
                        group->addChild( modelNode );

                    cx._groupStack.top()->addChild( group );

                    if ( iconNode && cx._options->declutter() == true )
                        Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );

                    if ( iconNode )
                        KML_Feature::build( conf, cx, iconNode );
                    if ( modelNode )
                        KML_Feature::build( conf, cx, modelNode );
                    if ( featureNode )
                        KML_Feature::build( conf, cx, featureNode );
                }

                else
                {
                    if ( iconNode )
                    {
                        if ( cx._options->iconAndLabelGroup().valid() )
                        {
                            cx._options->iconAndLabelGroup()->addChild( iconNode );
                        }
                        else
                        {
                            cx._groupStack.top()->addChild( iconNode );
                            if ( cx._options->declutter() == true )
                                Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
                        }
                        KML_Feature::build( conf, cx, iconNode );
                    }
                    if ( modelNode )
                    {
                        cx._groupStack.top()->addChild( modelNode );
                        KML_Feature::build( conf, cx, modelNode );
                    }
                    if ( featureNode )
                    {
                        cx._groupStack.top()->addChild( featureNode );
                        KML_Feature::build( conf, cx, featureNode );
                    }
                }
            }
        }
    }
}