Ejemplo n.º 1
0
void 
CollectionFilterState::push( const FeatureList& input )
{
    for( FeatureList::const_iterator i = input.begin(); i != input.end(); i++ )
        if ( i->get()->hasShapeData() )
            features.push_back( i->get() );
}
Ejemplo n.º 2
0
// reads a chunk of features into a memory cache; do this for performance
// and to avoid needing the OGR Mutex every time
void
FeatureCursorOGR::readChunk()
{
    if ( !_resultSetHandle )
        return;
    
    OGR_SCOPED_LOCK;

    while( _queue.size() < _chunkSize && !_resultSetEndReached )
    {
        FeatureList filterList;
        while( filterList.size() < _chunkSize && !_resultSetEndReached )
        {
            OGRFeatureH handle = OGR_L_GetNextFeature( _resultSetHandle );
            if ( handle )
            {
                osg::ref_ptr<Feature> feature = OgrUtils::createFeature( handle, _profile.get() );

                if (feature.valid() &&
                    !_source->isBlacklisted( feature->getFID() ) &&
                    validateGeometry( feature->getGeometry() ))
                {
                    filterList.push_back( feature.release() );
                }
                OGR_F_Destroy( handle );
            }
            else
            {
                _resultSetEndReached = true;
            }
        }

        // preprocess the features using the filter list:
        if ( !_filters.empty() )
        {
            FilterContext cx;
            cx.setProfile( _profile.get() );
            if (_query.bounds().isSet())
            {
                cx.extent() = GeoExtent(_profile->getSRS(), _query.bounds().get());
            }
            else
            {
                cx.extent() = _profile->getExtent();
            }

            for( FeatureFilterList::const_iterator i = _filters.begin(); i != _filters.end(); ++i )
            {
                FeatureFilter* filter = i->get();
                cx = filter->push( filterList, cx );
            }
        }

        for(FeatureList::const_iterator i = filterList.begin(); i != filterList.end(); ++i)
        {
            _queue.push( i->get() );
        }
    }
}
Ejemplo n.º 3
0
//clustering:
//  troll the external model for geodes. for each geode, create a geode in the target
//  model. then, for each geometry in that geode, replicate it once for each instance of
//  the model in the feature batch and transform the actual verts to a local offset
//  relative to the tile centroid. Finally, reassemble all the geodes and optimize. 
//  hopefully stateset sharing etc will work out. we may need to strip out LODs too.
bool
SubstituteModelFilter::cluster(const FeatureList&           features,
                               const MarkerSymbol*          symbol, 
                               Session* session,
                               osg::Group*                  attachPoint,
                               FilterContext&               cx )
{    
    MarkerToFeatures markerToFeatures;
    MarkerFactory factory( session);
    for (FeatureList::const_iterator i = features.begin(); i != features.end(); ++i)
    {
        Feature* f = i->get();
        osg::ref_ptr< osg::Node > model = factory.getOrCreateNode( f, symbol );
        //Try to find the existing entry
        if (model.valid())
        {
            MarkerToFeatures::iterator itr = markerToFeatures.find( model.get() );
            if (itr == markerToFeatures.end())
            {
                markerToFeatures[ model.get() ].push_back( f );
            }
            else
            {
                itr->second.push_back( f );
            }
        }
    }

    /*
    OE_NOTICE << "Sorted models into " << markerToFeatures.size() << " buckets" << std::endl;
    for (MarkerToFeatures::iterator i = markerToFeatures.begin(); i != markerToFeatures.end(); ++i)
    {
        OE_NOTICE << "    Bucket has " << i->second.size() << " features" << std::endl;
    }
    */

    //For each model, cluster the features that use that model

    for (MarkerToFeatures::iterator i = markerToFeatures.begin(); i != markerToFeatures.end(); ++i)
    {
        osg::Node* clone = dynamic_cast<osg::Node*>( i->first->clone( osg::CopyOp::DEEP_COPY_ALL ) );

        // ..and apply the clustering to the copy.
        ClusterVisitor cv( i->second, _modelMatrix, this, cx );
        clone->accept( cv );

        attachPoint->addChild( clone );
    }

    return true;
}
Ejemplo n.º 4
0
//clustering:
//  troll the external model for geodes. for each geode, create a geode in the target
//  model. then, for each geometry in that geode, replicate it once for each instance of
//  the model in the feature batch and transform the actual verts to a local offset
//  relative to the tile centroid. Finally, reassemble all the geodes and optimize. 
//  hopefully stateset sharing etc will work out. we may need to strip out LODs too.
bool
SubstituteModelFilter::cluster(const FeatureList&           features,
                               const MarkerSymbol*          symbol, 
                               Session*                     session,
                               osg::Group*                  attachPoint,
                               FilterContext&               context )
{    
    MarkerToFeatures markerToFeatures;

    // first, sort the features into buckets, each bucket corresponding to a
    // unique marker.
    for (FeatureList::const_iterator i = features.begin(); i != features.end(); ++i)
    {
        Feature* f = i->get();

        // resolve the URI for the marker:
        StringExpression uriEx( *symbol->url() );
        URI markerURI( f->eval( uriEx, &context ), uriEx.uriContext() );

        // find and load the corresponding marker model. We're using the session-level
        // object store to cache models. This is thread-safe sine we are always going
        // to CLONE the model before using it.
        osg::ref_ptr<osg::Node> model = context.getSession()->getObject<osg::Node>( markerURI.full() );
        if ( !model.valid() )
        {
            osg::ref_ptr<MarkerResource> mres = new MarkerResource();
            mres->uri() = markerURI;
            model = mres->createNode( context.getSession()->getDBOptions() );
            if ( model.valid() )
            {
                // store it, but only if there isn't already one in there.
                context.getSession()->putObject( markerURI.full(), model.get(), false );
            }
        }

        if ( model.valid() )
        {
            MarkerToFeatures::iterator itr = markerToFeatures.find( model.get() );
            if (itr == markerToFeatures.end())
                markerToFeatures[ model.get() ].push_back( f );
            else
                itr->second.push_back( f );
        }
    }

    //For each model, cluster the features that use that marker
    for (MarkerToFeatures::iterator i = markerToFeatures.begin(); i != markerToFeatures.end(); ++i)
    {
        osg::Node* prototype = i->first;

        // we're using the Session cache since we know we'll be cloning.
        if ( prototype )
        {
            osg::Node* clone = osg::clone( prototype, osg::CopyOp::DEEP_COPY_ALL );

            // ..and apply the clustering to the copy.
            ClusterVisitor cv( i->second, symbol, this, context );
            clone->accept( cv );

            attachPoint->addChild( clone );
        }
    }

    return true;
}
Ejemplo n.º 5
0
        void apply( osg::Geode& geode )
        {
            bool makeECEF = _cx.getSession()->getMapInfo().isGeocentric();
            const SpatialReference* srs = _cx.profile()->getSRS();

            NumericExpression scaleEx = *_symbol->scale();
            osg::Matrixd scaleMatrix;

            // save the geode's drawables..
            osg::Geode::DrawableList old_drawables = geode.getDrawableList();

            // ..and clear out the drawables list.
            geode.removeDrawables( 0, geode.getNumDrawables() );

            // foreach each drawable that was originally in the geode...
            for( osg::Geode::DrawableList::iterator i = old_drawables.begin(); i != old_drawables.end(); i++ )
            {
                osg::Geometry* originalDrawable = dynamic_cast<osg::Geometry*>( i->get() );
                if ( !originalDrawable )
                    continue;

                // go through the list of input features...
                for( FeatureList::const_iterator j = _features.begin(); j != _features.end(); j++ )
                {
                    const Feature* feature = j->get();

                    if ( _symbol->scale().isSet() )
                    {
                        double scale = feature->eval( scaleEx, &_cx );
                        scaleMatrix.makeScale( scale, scale, scale );
                    }

                    ConstGeometryIterator gi( feature->getGeometry(), false );
                    while( gi.hasMore() )
                    {
                        const Geometry* geom = gi.next();

                        for( Geometry::const_iterator k = geom->begin(); k != geom->end(); ++k )
                        {
                            osg::Vec3d   point = *k;
                            osg::Matrixd mat;

                            if ( makeECEF )
                            {
                                osg::Matrixd rotation;
                                ECEF::transformAndGetRotationMatrix( point, srs, point, rotation );
                                mat = rotation * scaleMatrix * osg::Matrixd::translate(point) * _f2n->world2local();
                            }
                            else
                            {
                                mat = scaleMatrix * osg::Matrixd::translate(point) * _f2n->world2local();
                            }

                            // clone the source drawable once for each input feature.
                            osg::ref_ptr<osg::Geometry> newDrawable = osg::clone( 
                                originalDrawable, 
                                osg::CopyOp::DEEP_COPY_ARRAYS | osg::CopyOp::DEEP_COPY_PRIMITIVES );

                            osg::Vec3Array* verts = dynamic_cast<osg::Vec3Array*>( newDrawable->getVertexArray() );
                            if ( verts )
                            {
                                for( osg::Vec3Array::iterator v = verts->begin(); v != verts->end(); ++v )
                                {
                                    (*v).set( (*v) * mat );
                                }
                                
                                // add the new cloned, translated drawable back to the geode.
                                geode.addDrawable( newDrawable.get() );
                            }
                        }

                    }
                }
            }

            geode.dirtyBound();

            MeshConsolidator::run( geode );

            // merge the geometry. Not sure this is necessary
            osgUtil::Optimizer opt;
            opt.optimize( &geode, osgUtil::Optimizer::MERGE_GEOMETRY | osgUtil::Optimizer::SHARE_DUPLICATE_STATE );
            
            osg::NodeVisitor::apply( geode );
        }
Ejemplo n.º 6
0
    void apply( osg::Geode& geode )
    {
        // save the geode's drawables..
        osg::Geode::DrawableList old_drawables = geode.getDrawableList();

        //OE_DEBUG << "ClusterVisitor geode " << &geode << " featureNode=" << _featureNode << " drawables=" << old_drawables.size() << std::endl;

        // ..and clear out the drawables list.
        geode.removeDrawables( 0, geode.getNumDrawables() );

        // foreach each drawable that was originally in the geode...
        for( osg::Geode::DrawableList::iterator i = old_drawables.begin(); i != old_drawables.end(); i++ )
        {
            osg::Geometry* originalDrawable = dynamic_cast<osg::Geometry*>( i->get() );
            if ( !originalDrawable )
                continue;

            // go through the list of input features...
            for( FeatureList::const_iterator j = _features.begin(); j != _features.end(); j++ )
            {
                Feature* feature = j->get();

                osg::Matrixd scaleMatrix;

                if ( _symbol->scale().isSet() )
                {
                    double scale = feature->eval( _scaleExpr, &_cx );
                    scaleMatrix.makeScale( scale, scale, scale );
                }

                osg::Matrixd rotationMatrix;
                if ( _modelSymbol && _modelSymbol->heading().isSet() )
                {
                    float heading = feature->eval( _headingExpr, &_cx );
                    rotationMatrix.makeRotate( osg::Quat(osg::DegreesToRadians(heading), osg::Vec3(0,0,1)) );
                }

                GeometryIterator gi( feature->getGeometry(), false );
                while( gi.hasMore() )
                {
                    Geometry* geom = gi.next();

                    // if necessary, transform the points to the target SRS:
                    if ( !_makeECEF && !_targetSRS->isEquivalentTo(_srs) )
                    {
                        _srs->transform( geom->asVector(), _targetSRS );
                    }

                    for( Geometry::const_iterator k = geom->begin(); k != geom->end(); ++k )
                    {
                        osg::Vec3d   point = *k;
                        osg::Matrixd mat;

                        if ( _makeECEF )
                        {
                            osg::Matrixd rotation;
                            ECEF::transformAndGetRotationMatrix( point, _srs, point, _targetSRS, rotation );
                            mat = rotationMatrix * rotation * scaleMatrix * osg::Matrixd::translate(point) * _f2n->world2local();
                        }
                        else
                        {
                            mat = rotationMatrix * scaleMatrix * osg::Matrixd::translate(point) * _f2n->world2local();
                        }

                        // clone the source drawable once for each input feature.
                        osg::ref_ptr<osg::Geometry> newDrawable = osg::clone( 
                            originalDrawable, 
                            osg::CopyOp::DEEP_COPY_ARRAYS | osg::CopyOp::DEEP_COPY_PRIMITIVES );

                        osg::Vec3Array* verts = dynamic_cast<osg::Vec3Array*>( newDrawable->getVertexArray() );
                        if ( verts )
                        {
                            for( osg::Vec3Array::iterator v = verts->begin(); v != verts->end(); ++v )
                            {
                                (*v).set( (*v) * mat );
                            }

                            // add the new cloned, translated drawable back to the geode.
                            geode.addDrawable( newDrawable.get() );

                            if ( _cx.featureIndex() )
                                _cx.featureIndex()->tagPrimitiveSets( newDrawable.get(), feature );
                        }
                    }

                }
            }
        }

        geode.dirtyBound();

        MeshConsolidator::run( geode );

        osg::NodeVisitor::apply( geode );
    }
Ejemplo n.º 7
0
bool
SubstituteModelFilter::process(const FeatureList&           features,
                               const InstanceSymbol*        symbol,
                               Session*                     session,
                               osg::Group*                  attachPoint,
                               FilterContext&               context )
{
    // Establish SRS information:
    bool makeECEF = context.getSession()->getMapInfo().isGeocentric();
    const SpatialReference* targetSRS = context.getSession()->getMapInfo().getSRS();

    // first, go through the features and build the model cache. Apply the model matrix' scale
    // factor to any AutoTransforms directly (cloning them as necessary)
    std::map< std::pair<URI, float>, osg::ref_ptr<osg::Node> > uniqueModels;

    // keep track of failed URIs so we don't waste time or warning messages on them
    std::set< URI > missing;

    StringExpression  uriEx   = *symbol->url();
    NumericExpression scaleEx = *symbol->scale();

    const ModelSymbol* modelSymbol = dynamic_cast<const ModelSymbol*>(symbol);
    const IconSymbol*  iconSymbol  = dynamic_cast<const IconSymbol*> (symbol);

    NumericExpression headingEx;
    if ( modelSymbol )
        headingEx = *modelSymbol->heading();

    for( FeatureList::const_iterator f = features.begin(); f != features.end(); ++f )
    {
        Feature* input = f->get();

        // evaluate the instance URI expression:
        StringExpression uriEx = *symbol->url();
        URI instanceURI( input->eval(uriEx, &context), uriEx.uriContext() );

        // find the corresponding marker in the cache
        osg::ref_ptr<InstanceResource> instance;
        if ( !findResource(instanceURI, symbol, context, missing, instance) )
            continue;

        // evalute the scale expression (if there is one)
        float scale = 1.0f;
        osg::Matrixd scaleMatrix;

        if ( symbol->scale().isSet() )
        {
            scale = input->eval( scaleEx, &context );
            if ( scale == 0.0 )
                scale = 1.0;
            if ( scale != 1.0 )
                _normalScalingRequired = true;
            scaleMatrix = osg::Matrix::scale( scale, scale, scale );
        }
        
        osg::Matrixd rotationMatrix;

        if ( modelSymbol && modelSymbol->heading().isSet() )
        {
            float heading = input->eval(headingEx, &context);
            rotationMatrix.makeRotate( osg::Quat(osg::DegreesToRadians(heading), osg::Vec3(0,0,1)) );
        }

        // how that we have a marker source, create a node for it
        std::pair<URI,float> key( instanceURI, scale );

        // cache nodes per instance.
        osg::ref_ptr<osg::Node>& model = uniqueModels[key];
        if ( !model.valid() )
        {
            context.resourceCache()->getInstanceNode( instance.get(), model );

            // if icon decluttering is off, install an AutoTransform.
            if ( iconSymbol )
            {
                if ( iconSymbol->declutter() == true )
                {
                    Decluttering::setEnabled( model->getOrCreateStateSet(), true );
                }
                else if ( dynamic_cast<osg::AutoTransform*>(model.get()) == 0L )
                {
                    osg::AutoTransform* at = new osg::AutoTransform();
                    at->setAutoRotateMode( osg::AutoTransform::ROTATE_TO_SCREEN );
                    at->setAutoScaleToScreen( true );
                    at->addChild( model );
                    model = at;
                }
            }
        }

        if ( model.valid() )
        {
            GeometryIterator gi( input->getGeometry(), false );
            while( gi.hasMore() )
            {
                Geometry* geom = gi.next();

                // if necessary, transform the points to the target SRS:
                if ( !makeECEF && !targetSRS->isEquivalentTo(context.profile()->getSRS()) )
                {
                    context.profile()->getSRS()->transform( geom->asVector(), targetSRS );
                }

                for( unsigned i=0; i<geom->size(); ++i )
                {
                    osg::Matrixd mat;

                    osg::Vec3d point = (*geom)[i];
                    if ( makeECEF )
                    {
                        // the "rotation" element lets us re-orient the instance to ensure it's pointing up. We
                        // could take a shortcut and just use the current extent's local2world matrix for this,
                        // but if the tile is big enough the up vectors won't be quite right.
                        osg::Matrixd rotation;
                        ECEF::transformAndGetRotationMatrix( point, context.profile()->getSRS(), point, targetSRS, rotation );
                        mat = rotationMatrix * rotation * scaleMatrix * osg::Matrixd::translate( point ) * _world2local;
                    }
                    else
                    {
                        mat = rotationMatrix * scaleMatrix *  osg::Matrixd::translate( point ) * _world2local;
                    }

                    osg::MatrixTransform* xform = new osg::MatrixTransform();
                    xform->setMatrix( mat );
                    xform->setDataVariance( osg::Object::STATIC );
                    xform->addChild( model.get() );
                    attachPoint->addChild( xform );

                    if ( context.featureIndex() && !_useDrawInstanced )
                    {
                        context.featureIndex()->tagNode( xform, input );
                    }

                    // name the feature if necessary
                    if ( !_featureNameExpr.empty() )
                    {
                        const std::string& name = input->eval( _featureNameExpr, &context);
                        if ( !name.empty() )
                            xform->setName( name );
                    }
                }
            }
        }
    }

    if ( iconSymbol )
    {
        // activate decluttering for icons if requested
        if ( iconSymbol->declutter() == true )
        {
            Decluttering::setEnabled( attachPoint->getOrCreateStateSet(), true );
        }

        // activate horizon culling if we are in geocentric space
        if ( context.getSession() && context.getSession()->getMapInfo().isGeocentric() )
        {
            HorizonCullingProgram::install( attachPoint->getOrCreateStateSet() );
        }
    }

    // active DrawInstanced if required:
    if ( _useDrawInstanced && Registry::capabilities().supportsDrawInstanced() )
    {
        DrawInstanced::convertGraphToUseDrawInstanced( attachPoint );

        // install a shader program to render draw-instanced.
        DrawInstanced::install( attachPoint->getOrCreateStateSet() );
    }

    return true;
}
Ejemplo n.º 8
0
    /**
     * Creates a complete set of positioned label nodes from a feature list.
     */
    osg::Node* createNode(
        const FeatureList&   input,
        const TextSymbol*    text,
        const FilterContext& context )
    {
        osg::Group* group = 0L;
        std::set<std::string> used; // to prevent dupes
        bool skipDupes = (text->removeDuplicateLabels() == true);

        StringExpression  contentExpr ( *text->content() );
        NumericExpression priorityExpr( *text->priority() );

        bool makeECEF = false;
        if ( context.isGeoreferenced() )
        {
            makeECEF = context.getSession()->getMapInfo().isGeocentric();
        }

        for( FeatureList::const_iterator i = input.begin(); i != input.end(); ++i )
        {
            const Feature* feature = i->get();
            if ( !feature )
                continue;

            const Geometry* geom = feature->getGeometry();
            if ( !geom )
                continue;

            osg::Vec3d centroid  = geom->getBounds().center();

            if ( makeECEF )
            {
                context.profile()->getSRS()->transformToECEF( centroid, centroid );
            }

            const std::string& value = feature->eval( contentExpr, &context );

            if ( !value.empty() && (!skipDupes || used.find(value) == used.end()) )
            {
                if ( !group )
                {
                    group = new osg::Group();
                }

                double priority = feature->eval( priorityExpr, &context );

                Controls::LabelControl* label = new Controls::LabelControl( value );
                if ( text->fill().isSet() )
                    label->setForeColor( text->fill()->color() );
                if ( text->halo().isSet() )
                    label->setHaloColor( text->halo()->color() );
                if ( text->size().isSet() )
                    label->setFontSize( *text->size() );
                if ( text->font().isSet() )
                    label->setFont( osgText::readFontFile(*text->font()) );

                Controls::ControlNode* node = new Controls::ControlNode( label, priority );

                osg::MatrixTransform* xform = new osg::MatrixTransform( osg::Matrixd::translate(centroid) );
                xform->addChild( node );

                // for a geocentric map, do a simple dot product cull.
                if ( makeECEF )
                {
                    xform->setCullCallback( new CullNodeByHorizon(
                        centroid, 
                        context.getSession()->getMapInfo().getProfile()->getSRS()->getEllipsoid()) );
                    group->addChild( xform );
                }
                else
                {
                    group->addChild( xform );
                }

                if ( skipDupes )
                {
                    used.insert( value );
                }
            }
        }

        return group;
    }
Ejemplo n.º 9
0
bool
SubstituteModelFilter::process(const FeatureList&           features,
                               const InstanceSymbol*        symbol,
                               Session*                     session,
                               osg::Group*                  attachPoint,
                               FilterContext&               context )
{
    // Establish SRS information:
    bool makeECEF = context.getSession()->getMapInfo().isGeocentric();
    const SpatialReference* targetSRS = context.getSession()->getMapInfo().getSRS();

    // first, go through the features and build the model cache. Apply the model matrix' scale
    // factor to any AutoTransforms directly (cloning them as necessary)
    std::map< std::pair<URI, float>, osg::ref_ptr<osg::Node> > uniqueModels;

    // URI cache speeds up URI creation since it can be slow.
    osgEarth::fast_map<std::string, URI> uriCache;

    // keep track of failed URIs so we don't waste time or warning messages on them
    std::set< URI > missing;

    StringExpression  uriEx    = *symbol->url();
    NumericExpression scaleEx  = *symbol->scale();

    const ModelSymbol* modelSymbol = dynamic_cast<const ModelSymbol*>(symbol);
    const IconSymbol*  iconSymbol  = dynamic_cast<const IconSymbol*> (symbol);

    NumericExpression headingEx;    
    NumericExpression scaleXEx;
    NumericExpression scaleYEx;
    NumericExpression scaleZEx;

    if ( modelSymbol )
    {
        headingEx = *modelSymbol->heading();
        scaleXEx  = *modelSymbol->scaleX();
        scaleYEx  = *modelSymbol->scaleY();
        scaleZEx  = *modelSymbol->scaleZ();
    }

    for( FeatureList::const_iterator f = features.begin(); f != features.end(); ++f )
    {
        Feature* input = f->get();

        // Run a feature pre-processing script.
        if ( symbol->script().isSet() )
        {
            StringExpression scriptExpr(symbol->script().get());
            input->eval( scriptExpr, &context );
        }

		// evaluate the instance URI expression:
		const std::string& st = input->eval(uriEx, &context);
		URI& instanceURI = uriCache[st];
		if(instanceURI.empty()) // Create a map, to reuse URI's, since they take a long time to create
		{
			instanceURI = URI( st, uriEx.uriContext() );
		}

        // find the corresponding marker in the cache
        osg::ref_ptr<InstanceResource> instance;
        if ( !findResource(instanceURI, symbol, context, missing, instance) )
            continue;

        // evalute the scale expression (if there is one)
        float scale = 1.0f;
        osg::Vec3d scaleVec(1.0, 1.0, 1.0);
        osg::Matrixd scaleMatrix;
        if ( symbol->scale().isSet() )
        {
            scale = input->eval( scaleEx, &context );
            scaleVec.set(scale, scale, scale);
        }
        if ( modelSymbol )
        {
            if ( modelSymbol->scaleX().isSet() )
            {
                scaleVec.x() *= input->eval( scaleXEx, &context );
            }
            if ( modelSymbol->scaleY().isSet() )
            {
                scaleVec.y() *= input->eval( scaleYEx, &context );
            }
            if ( modelSymbol->scaleZ().isSet() )
            {
                scaleVec.z() *= input->eval( scaleZEx, &context );
            }
        }

        if ( scaleVec.x() == 0.0 ) scaleVec.x() = 1.0;
        if ( scaleVec.y() == 0.0 ) scaleVec.y() = 1.0;
        if ( scaleVec.z() == 0.0 ) scaleVec.z() = 1.0;

        scaleMatrix = osg::Matrix::scale( scaleVec );
        
        osg::Matrixd rotationMatrix;
        if ( modelSymbol && modelSymbol->heading().isSet() )
        {
            float heading = input->eval(headingEx, &context);
            rotationMatrix.makeRotate( osg::Quat(osg::DegreesToRadians(heading), osg::Vec3(0,0,1)) );
        }

		// how that we have a marker source, create a node for it
		std::pair<URI,float> key( instanceURI, iconSymbol? scale : 1.0f ); //use 1.0 for models, since we don't want unique models based on scaling

        // cache nodes per instance.
        osg::ref_ptr<osg::Node>& model = uniqueModels[key];
        if ( !model.valid() )
        {
            // Always clone the cached instance so we're not processing data that's
            // already in the scene graph. -gw
            context.resourceCache()->cloneOrCreateInstanceNode(instance.get(), model, context.getDBOptions());

            // if icon decluttering is off, install an AutoTransform.
            if ( iconSymbol )
            {
                if ( iconSymbol->declutter() == true )
                {
                    ScreenSpaceLayout::activate(model->getOrCreateStateSet());
                }
                else if ( dynamic_cast<osg::AutoTransform*>(model.get()) == 0L )
                {
                    osg::AutoTransform* at = new osg::AutoTransform();
                    at->setAutoRotateMode( osg::AutoTransform::ROTATE_TO_SCREEN );
                    at->setAutoScaleToScreen( true );
                    at->addChild( model );
                    model = at;
                }
            }
        }

        if ( model.valid() )
        {
            GeometryIterator gi( input->getGeometry(), false );
            while( gi.hasMore() )
            {
                Geometry* geom = gi.next();

                // if necessary, transform the points to the target SRS:
                if ( !makeECEF && !targetSRS->isEquivalentTo(context.profile()->getSRS()) )
                {
                    context.profile()->getSRS()->transform( geom->asVector(), targetSRS );
                }

                for( unsigned i=0; i<geom->size(); ++i )
                {
                    osg::Matrixd mat;

                    // need to recalcluate expression-based data per-point, not just per-feature!
                    float scale = 1.0f;
                    osg::Vec3d scaleVec(1.0, 1.0, 1.0);
                    osg::Matrixd scaleMatrix;
                    if ( symbol->scale().isSet() )
                    {
                        scale = input->eval( scaleEx, &context );
                        scaleVec.set(scale, scale, scale);
                    }
                    if ( modelSymbol )
                    {
                        if ( modelSymbol->scaleX().isSet() )
                        {
                            scaleVec.x() *= input->eval( scaleXEx, &context );
                        }
                        if ( modelSymbol->scaleY().isSet() )
                        {
                            scaleVec.y() *= input->eval( scaleYEx, &context );
                        }
                        if ( modelSymbol->scaleZ().isSet() )
                        {
                            scaleVec.z() *= input->eval( scaleZEx, &context );
                        }
                    }

                    if ( scaleVec.x() == 0.0 ) scaleVec.x() = 1.0;
                    if ( scaleVec.y() == 0.0 ) scaleVec.y() = 1.0;
                    if ( scaleVec.z() == 0.0 ) scaleVec.z() = 1.0;

                    scaleMatrix = osg::Matrix::scale( scaleVec );

                    if ( modelSymbol->heading().isSet() )
                    {
                        float heading = input->eval(headingEx, &context);
                        rotationMatrix.makeRotate( osg::Quat(osg::DegreesToRadians(heading), osg::Vec3(0,0,1)) );
                    }

                    osg::Vec3d point = (*geom)[i];
                    if ( makeECEF )
                    {
                        // the "rotation" element lets us re-orient the instance to ensure it's pointing up. We
                        // could take a shortcut and just use the current extent's local2world matrix for this,
                        // but if the tile is big enough the up vectors won't be quite right.
                        osg::Matrixd rotation;
                        ECEF::transformAndGetRotationMatrix( point, context.profile()->getSRS(), point, targetSRS, rotation );
                        mat = scaleMatrix * rotationMatrix * rotation * osg::Matrixd::translate( point ) * _world2local;
                    }
                    else
                    {
                        mat = scaleMatrix * rotationMatrix * osg::Matrixd::translate( point ) * _world2local;
                    }

                    osg::MatrixTransform* xform = new osg::MatrixTransform();
                    xform->setMatrix( mat );
                    xform->setDataVariance( osg::Object::STATIC );
                    xform->addChild( model.get() );
                    attachPoint->addChild( xform );

                    // Only tag nodes if we aren't using clustering.
                    if ( context.featureIndex() && !_cluster)
                    {
                        context.featureIndex()->tagNode( xform, input );
                    }

                    // name the feature if necessary
                    if ( !_featureNameExpr.empty() )
                    {
                        const std::string& name = input->eval( _featureNameExpr, &context);
                        if ( !name.empty() )
                            xform->setName( name );
                    }
                }
            }
        }
    }

    if ( iconSymbol )
    {
        // activate decluttering for icons if requested
        if ( iconSymbol->declutter() == true )
        {
            ScreenSpaceLayout::activate(attachPoint->getOrCreateStateSet());
        }

        // activate horizon culling if we are in geocentric space
        if ( context.getSession() && context.getSession()->getMapInfo().isGeocentric() )
        {
            // should this use clipping, or a horizon cull callback?

            //HorizonCullingProgram::install( attachPoint->getOrCreateStateSet() );

            attachPoint->getOrCreateStateSet()->setMode(GL_CLIP_DISTANCE0, 1);
        }
    }

    // active DrawInstanced if required:
    if ( _useDrawInstanced )
    {
        DrawInstanced::convertGraphToUseDrawInstanced( attachPoint );

        // install a shader program to render draw-instanced.
        DrawInstanced::install( attachPoint->getOrCreateStateSet() );
    }

    return true;
}
Ejemplo n.º 10
0
    /**
     * Creates a complete set of positioned label nodes from a feature list.
     */
    osg::Node* createNode(
        const FeatureList&   input,
        const Style&         style,
        FilterContext&       context )
    {
        if ( style.get<TextSymbol>() == 0L && style.get<IconSymbol>() == 0L )
            return 0L;

        // copy the style so we can (potentially) modify the text symbol.
        Style styleCopy = style;
        TextSymbol* text = styleCopy.get<TextSymbol>();
        IconSymbol* icon = styleCopy.get<IconSymbol>();

        osg::Group* group = new osg::Group();
        
        StringExpression  textContentExpr ( text ? *text->content()  : StringExpression() );
        NumericExpression textPriorityExpr( text ? *text->priority() : NumericExpression() );
        NumericExpression textSizeExpr    ( text ? *text->size()     : NumericExpression() );
        StringExpression  iconUrlExpr     ( icon ? *icon->url()      : StringExpression() );
        NumericExpression iconScaleExpr   ( icon ? *icon->scale()    : NumericExpression() );
        NumericExpression iconHeadingExpr ( icon ? *icon->heading()  : NumericExpression() );

        for( FeatureList::const_iterator i = input.begin(); i != input.end(); ++i )
        {
            Feature* feature = i->get();
            if ( !feature )
                continue;
            
            // run a symbol script if present.
            if ( text && text->script().isSet() )
            {
                StringExpression temp( text->script().get() );
                feature->eval( temp, &context );
            }
            
            // run a symbol script if present.
            if ( icon && icon->script().isSet() )
            {
                StringExpression temp( icon->script().get() );
                feature->eval( temp, &context );
            }

            const Geometry* geom = feature->getGeometry();
            if ( !geom )
                continue;

            Style tempStyle = styleCopy;

            // evaluate expressions into literals.
            // TODO: Later we could replace this with a generate "expression evaluator" type
            // that we could pass to PlaceNode in the DB options. -gw

            if ( text )
            {
                if ( text->content().isSet() )
                    tempStyle.get<TextSymbol>()->content()->setLiteral( feature->eval( textContentExpr, &context ) );

                if ( text->size().isSet() )
                    tempStyle.get<TextSymbol>()->size()->setLiteral( feature->eval(textSizeExpr, &context) );
            }

            if ( icon )
            {
                if ( icon->url().isSet() )
                    tempStyle.get<IconSymbol>()->url()->setLiteral( feature->eval(iconUrlExpr, &context) );

                if ( icon->scale().isSet() )
                    tempStyle.get<IconSymbol>()->scale()->setLiteral( feature->eval(iconScaleExpr, &context) );

                if ( icon->heading().isSet() )
                    tempStyle.get<IconSymbol>()->heading()->setLiteral( feature->eval(iconHeadingExpr, &context) );
            }
            
            osg::Node* node = makePlaceNode(
                context,
                feature,
                tempStyle,
                textPriorityExpr);

            if ( node )
            {
                if ( context.featureIndex() )
                {
                    context.featureIndex()->tagNode(node, feature);
                }

                group->addChild( node );
            }
        }

        // Note to self: need to change this to support picking later. -gw
        //VirtualProgram* vp = VirtualProgram::getOrCreate(group->getOrCreateStateSet());
        //vp->setInheritShaders( false );

        return group;
    }
Ejemplo n.º 11
0
FilterStateResult 
CollectionFilterState::signalCheckpoint()
{
    FilterStateResult result;

    FilterState* next = getNextState();
    if ( next )
    {
        int metering = filter->getMetering();

        if ( dynamic_cast<FeatureFilterState*>( next ) )
        {
            if ( !features.empty() )
            {
                FeatureGroups feature_groups;
                for( FeatureList::const_iterator i = features.begin(); i != features.end(); i++ )
                    feature_groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );

                FeatureFilterState* state = static_cast<FeatureFilterState*>( next );
                result = meterGroups( filter.get(), feature_groups, state, metering, current_env.get() );
            }
            else
            {
                result.set( FilterStateResult::STATUS_NODATA, filter.get() );
            }
        }
        else if ( dynamic_cast<FragmentFilterState*>( next ) )
        {
            FragmentFilterState* state = static_cast<FragmentFilterState*>( next );
            if ( !features.empty() )
            {
                FeatureGroups groups;
                for( FeatureList::const_iterator i = features.begin(); i != features.end(); i++ )
                    groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), groups, state, metering, current_env.get() );
            }
            else if ( !fragments.empty() )
            {
                FragmentGroups groups;
                for( FragmentList::const_iterator i = fragments.begin(); i != fragments.end(); i++ )
                    groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), groups, state, metering, current_env.get() );
            }
            else
            {
                result.set( FilterStateResult::STATUS_NODATA, filter.get() );
            }
        }
        else if ( dynamic_cast<NodeFilterState*>( next ) )
        {
            NodeFilterState* state = static_cast<NodeFilterState*>( next ); 
            if ( !features.empty() )
            {
                FeatureGroups feature_groups;
                for( FeatureList::const_iterator i = features.begin(); i != features.end(); i++ )
                    feature_groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), feature_groups, state, metering, current_env.get() );
            }
            else if ( !fragments.empty() )
            {
                FragmentGroups groups;
                for( FragmentList::const_iterator i = fragments.begin(); i != fragments.end(); i++ )
                    groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), groups, state, metering, current_env.get() );
            }
            else if ( !nodes.empty() )
            {
                NodeGroups groups;
                for( AttributedNodeList::const_iterator i = nodes.begin(); i != nodes.end(); i++ )
                    groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), groups, state, metering, current_env.get() );
            }
            else
            {
                result.set( FilterStateResult::STATUS_NODATA, filter.get() );
            }
        }
        else if ( dynamic_cast<CollectionFilterState*>( next ) )
        {
            CollectionFilterState* state = static_cast<CollectionFilterState*>( next );   
            if ( !features.empty() )
            {
                FeatureGroups feature_groups;
                for( FeatureList::const_iterator i = features.begin(); i != features.end(); i++ )
                    feature_groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), feature_groups, state, metering, current_env.get() );
            }
            else if ( !fragments.empty() )
            {
                FragmentGroups groups;
                for( FragmentList::const_iterator i = fragments.begin(); i != fragments.end(); i++ )
                    groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), groups, state, metering, current_env.get() );
            }
            else if ( !nodes.empty() )
            {
                NodeGroups groups;
                for( AttributedNodeList::const_iterator i = nodes.begin(); i != nodes.end(); i++ )
                    groups[ filter->assign( i->get(), current_env.get() ) ].push_back( i->get() );
                result = meterGroups( filter.get(), groups, state, metering, current_env.get() );
            }
            else
            {
                result.set( FilterStateResult::STATUS_NODATA, filter.get() );    
            }
        }

        if ( result.isOK() )
        {
            result = next->signalCheckpoint();
        }
    }

    // clean up the input:
    features.clear();
    fragments.clear();
    nodes.clear();

    current_env = NULL;

    return result;
}
Ejemplo n.º 12
0
osg::Node* BuildTextOperator::operator()(const FeatureList&   features, 
                                         const TextSymbol*    symbol,
                                         const FilterContext& context)
{
    if (!symbol) return 0;

    std::set< std::string > labelNames;

    bool removeDuplicateLabels = symbol->removeDuplicateLabels().isSet() ? symbol->removeDuplicateLabels().get() : false;

    StringExpression contentExpr = *symbol->content();

    osg::Geode* result = new osg::Geode;
    for (FeatureList::const_iterator itr = features.begin(); itr != features.end(); ++itr)
    {
        Feature* feature = itr->get();
        if (!feature->getGeometry()) continue;

        std::string text;
        if (symbol->content().isSet())
        {
            //Get the text from the specified content and referenced attributes
            text = feature->eval( contentExpr );
        }

        if (text.empty()) continue;

        //See if there is a duplicate name
        if (removeDuplicateLabels && labelNames.find(text) != labelNames.end()) continue;

        bool rotateToScreen = symbol->rotateToScreen().isSet() ? symbol->rotateToScreen().value() : false;

        // find the centroid
        osg::Vec3d position;
        osg::Quat orientation;

        GeometryIterator gi( feature->getGeometry() );
        while( gi.hasMore() )
        {
            Geometry* geom = gi.next();

            TextSymbol::LinePlacement linePlacement = symbol->linePlacement().isSet() ? symbol->linePlacement().get() : TextSymbol::LINEPLACEMENT_ALONG_LINE;
            if (geom->getType() == Symbology::Geometry::TYPE_LINESTRING && linePlacement == TextSymbol::LINEPLACEMENT_ALONG_LINE)
            {
                //Compute the "middle" of the line string
                LineString* lineString = static_cast<LineString*>(geom);
                double length = lineString->getLength();
                double center = length / 2.0;
                osg::Vec3d start, end;
                if (lineString->getSegment(center, start, end))
                {
                    TextSymbol::LineOrientation lineOrientation = symbol->lineOrientation().isSet() ? symbol->lineOrientation().get() : TextSymbol::LINEORIENTATION_HORIZONTAL;

                    position = (end + start) / 2.0;
                    //We don't want to orient the text at all if we are rotating to the screen
                    if (!rotateToScreen && lineOrientation != TextSymbol::LINEORIENTATION_HORIZONTAL)
                    {
                        osg::Vec3d dir = (end-start);
                        dir.normalize();

                        if (lineOrientation == TextSymbol::LINEORIENTATION_PERPENDICULAR)
                        {
                            osg::Vec3d up(0,0,1);
                            const SpatialReference* srs = context.profile()->getSRS();
                            if (srs && context.isGeocentric() && srs->getEllipsoid())
                            {
                                osg::Vec3d w = context.toWorld( position );
                                up = srs->getEllipsoid()->computeLocalUpVector(w.x(), w.y(), w.z());
                            }
                            dir = up ^ dir;
                        }
                        orientation.makeRotate(osg::Vec3d(1,0,0), dir);
                    }                
                }
                else
                {
                    //Fall back on using the center
                    position = lineString->getBounds().center();
                }
            }
            else
            {
                position = geom->getBounds().center();
            }
        }

        osgText::Text* t = new osgText::Text();
        t->setText( text );

        std::string font = "fonts/arial.ttf";
        if (symbol->font().isSet() && !symbol->font().get().empty())
        {
            font = symbol->font().value();
        }

        t->setFont( font );
        t->setAutoRotateToScreen( rotateToScreen );

        TextSymbol::SizeMode sizeMode = symbol->sizeMode().isSet() ? symbol->sizeMode().get() : TextSymbol::SIZEMODE_SCREEN;
        if (sizeMode == TextSymbol::SIZEMODE_SCREEN) {
            t->setCharacterSizeMode( osgText::TextBase::SCREEN_COORDS );
        }
        else if (sizeMode == TextSymbol::SIZEMODE_OBJECT) {
            t->setCharacterSizeMode( osgText::TextBase::OBJECT_COORDS );
        }
        float size = symbol->size().isSet() ? symbol->size().get() : 32.0f;
        t->setCharacterSize( size );
        /*
        //TODO:  We need to do something to account for autotransformed text that is under a LOD.  Setting the initial bound works sometimes but not all the time.
        if (rotateToScreen)
        {
        //Set the initial bound so that OSG will traverse the text even if it's under an LOD.
        osg::BoundingBox bb;
        bb.expandBy( osg::BoundingSphere(position, size));
        t->setInitialBound( bb);
        }*/
        //t->setCharacterSizeMode( osgText::TextBase::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT );
        //t->setCharacterSize( 300000.0f );
        t->setPosition( position );
        t->setRotation( orientation);
        t->setAlignment( osgText::TextBase::CENTER_CENTER );
        t->getOrCreateStateSet()->setAttributeAndModes( new osg::Depth(osg::Depth::ALWAYS), osg::StateAttribute::ON );
        t->getOrCreateStateSet()->setRenderBinDetails( 99999, "RenderBin", osg::StateSet::OVERRIDE_RENDERBIN_DETAILS );

        // apply styling as appropriate:
        osg::Vec4f textColor = symbol->fill()->color();
        osg::Vec4f haloColor = symbol->halo()->color();

        t->setColor( textColor );
        t->setBackdropColor( haloColor );
        t->setBackdropType( osgText::Text::OUTLINE );

        if ( context.isGeocentric() )
        {
            // install a cluster culler
            t->setCullCallback( new CullDrawableByNormal(position * context.inverseReferenceFrame()) );
        }

        if (_hideClutter)
        {
            osg::BoundingBox tBound = t->getBound();
            osg::ref_ptr<osgUtil::PolytopeIntersector> intersector = new osgUtil::PolytopeIntersector(osgUtil::Intersector::MODEL, tBound.xMin(), tBound.yMin(), tBound.xMax(), tBound.yMax());
            osgUtil::IntersectionVisitor intersectVisitor(intersector.get());
            result->accept(intersectVisitor);

            if (!intersector->containsIntersections())
            {
                result->addDrawable( t );
                if (removeDuplicateLabels) labelNames.insert(text);
            }
        }
        else
        {
            result->addDrawable( t );
            if (removeDuplicateLabels) labelNames.insert(text);
        }
    }
    return result;
}
    FilterContext push(FeatureList& input, FilterContext& context)
    {
        if (_featureSource.valid())
        {
            // Get any features that intersect this query.
            FeatureList boundaries;
            getFeatures(context.extent().get(), boundaries );
            
            
            // The list of output features
            FeatureList output;

            if (boundaries.empty())
            {
                // No intersecting features.  If contains is false, then just the output to the input.
                if (contains() == false)
                {
                    output = input;
                }
            }
            else
            {
                // Transform the boundaries into the coordinate system of the features
                for (FeatureList::iterator itr = boundaries.begin(); itr != boundaries.end(); ++itr)
                {
                    itr->get()->transform( context.profile()->getSRS() );
                }

                for(FeatureList::const_iterator f = input.begin(); f != input.end(); ++f)
                {
                    Feature* feature = f->get();
                    if ( feature && feature->getGeometry() )
                    {
                        osg::Vec2d c = feature->getGeometry()->getBounds().center2d();

                        if ( contains() == true )
                        {
                            // coarsest:
                            if (_featureSource->getFeatureProfile()->getExtent().contains(GeoPoint(feature->getSRS(), c.x(), c.y())))
                            {
                                for (FeatureList::iterator itr = boundaries.begin(); itr != boundaries.end(); ++itr)
                                {
                                    Ring* ring = dynamic_cast< Ring*>(itr->get()->getGeometry());
                                    if (ring && ring->contains2D(c.x(), c.y()))
                                    {
                                        output.push_back( feature );
                                    }
                                }                        
                            }
                        }

                        else
                        {    
                            bool contained = false;

                            // coarsest:
                            if (_featureSource->getFeatureProfile()->getExtent().contains(GeoPoint(feature->getSRS(), c.x(), c.y())))
                            {
                                for (FeatureList::iterator itr = boundaries.begin(); itr != boundaries.end(); ++itr)
                                {
                                    Ring* ring = dynamic_cast< Ring*>(itr->get()->getGeometry());
                                    if (ring && ring->contains2D(c.x(), c.y()))
                                    {                             
                                        contained = true;
                                        break;
                                    }
                                }
                            }
                            if ( !contained )
                            {
                                output.push_back( feature );
                            }
                        }
                    }
                }
            }

            OE_INFO << LC << "Allowed " << output.size() << " out of " << input.size() << " features\n";

            input = output;
        }

        return context;
    }
Ejemplo n.º 14
0
bool
SubstituteModelFilter::process(const FeatureList&           features,                               
                               const MarkerSymbol*          symbol,
                               Session*                     session,
                               osg::Group*                  attachPoint,
                               FilterContext&               context )
{    
    bool makeECEF = context.getSession()->getMapInfo().isGeocentric();

    for( FeatureList::const_iterator f = features.begin(); f != features.end(); ++f )
    {
        Feature* input = f->get();

        GeometryIterator gi( input->getGeometry(), false );
        while( gi.hasMore() )
        {
            Geometry* geom = gi.next();

            for( unsigned i=0; i<geom->size(); ++i )
            {
                osg::Matrixd mat;

                osg::Vec3d point = (*geom)[i];
                if ( makeECEF )
                {
                    // the "rotation" element lets us re-orient the instance to ensure it's pointing up. We
                    // could take a shortcut and just use the current extent's local2world matrix for this,
                    // but it the tile is big enough the up vectors won't be quite right.
                    osg::Matrixd rotation;
                    ECEF::transformAndGetRotationMatrix( context.profile()->getSRS(), point, point, rotation );
                    mat = rotation * _modelMatrix * osg::Matrixd::translate( point ) * _world2local;
                }
                else
                {
                    mat = _modelMatrix * osg::Matrixd::translate( point ) * _world2local;
                }

                osg::MatrixTransform* xform = new osg::MatrixTransform();
                xform->setMatrix( mat );
                xform->setDataVariance( osg::Object::STATIC );
                MarkerFactory factory( session);
                osg::ref_ptr< osg::Node > model = factory.getOrCreateNode( input, symbol );
                if (model.get())
                {
                    xform->addChild( model.get() );
                }

                attachPoint->addChild( xform );

                // name the feature if necessary
                if ( !_featureNameExpr.empty() )
                {
                    const std::string& name = input->eval( _featureNameExpr );
                    if ( !name.empty() )
                        xform->setName( name );
                }
            }
        }
    }

    return true;
}
Ejemplo n.º 15
0
bool
SubstituteModelFilter::process(const FeatureList&           features,                               
                               const MarkerSymbol*          symbol,
                               Session*                     session,
                               osg::Group*                  attachPoint,
                               FilterContext&               context )
{
    bool makeECEF = context.getSession()->getMapInfo().isGeocentric();

    // first, go through the features and build the model cache. Apply the model matrix' scale
    // factor to any AutoTransforms directly (cloning them as necessary)
    std::map< std::pair<URI, float>, osg::ref_ptr<osg::Node> > uniqueModels;
    //std::map< Feature*, osg::ref_ptr<osg::Node> > featureModels;

    StringExpression  uriEx   = *symbol->url();
    NumericExpression scaleEx = *symbol->scale();

    for( FeatureList::const_iterator f = features.begin(); f != features.end(); ++f )
    {
        Feature* input = f->get();

        // evaluate the marker URI expression:
        StringExpression uriEx = *symbol->url();
        URI markerURI( input->eval(uriEx, &context), uriEx.uriContext() );

        // find the corresponding marker in the cache
        MarkerResource* marker = 0L;
        MarkerCache::Record rec = _markerCache.get( markerURI );
        if ( rec.valid() ) {
            marker = rec.value();
        }
        else {
            marker = new MarkerResource();
            marker->uri() = markerURI;
            _markerCache.insert( markerURI, marker );
        }

        // evalute the scale expression (if there is one)
        float scale = 1.0f;
        osg::Matrixd scaleMatrix;

        if ( symbol->scale().isSet() )
        {
            scale = input->eval( scaleEx, &context );
            if ( scale == 0.0 )
                scale = 1.0;
            scaleMatrix = osg::Matrix::scale( scale, scale, scale );
        }

        // how that we have a marker source, create a node for it
        std::pair<URI,float> key( markerURI, scale );
        osg::ref_ptr<osg::Node>& model = uniqueModels[key];
        if ( !model.valid() )
        {
            model = context.resourceCache()->getMarkerNode( marker );

            if ( scale != 1.0f && dynamic_cast<osg::AutoTransform*>( model.get() ) )
            {
                // clone the old AutoTransform, set the new scale, and copy over its children.
                osg::AutoTransform* oldAT = dynamic_cast<osg::AutoTransform*>(model.get());
                osg::AutoTransform* newAT = osg::clone( oldAT );

                // make a scaler and put it between the new AutoTransform and its kids
                osg::MatrixTransform* scaler = new osg::MatrixTransform(osg::Matrix::scale(scale,scale,scale));
                for( unsigned i=0; i<newAT->getNumChildren(); ++i )
                    scaler->addChild( newAT->getChild(0) );
                newAT->removeChildren(0, newAT->getNumChildren());
                newAT->addChild( scaler );
                model = newAT;
            }
        }

        if ( model.valid() )
        {
            GeometryIterator gi( input->getGeometry(), false );
            while( gi.hasMore() )
            {
                Geometry* geom = gi.next();

                for( unsigned i=0; i<geom->size(); ++i )
                {
                    osg::Matrixd mat;

                    osg::Vec3d point = (*geom)[i];
                    if ( makeECEF )
                    {
                        // the "rotation" element lets us re-orient the instance to ensure it's pointing up. We
                        // could take a shortcut and just use the current extent's local2world matrix for this,
                        // but if the tile is big enough the up vectors won't be quite right.
                        osg::Matrixd rotation;
                        ECEF::transformAndGetRotationMatrix( point, context.profile()->getSRS(), point, rotation );
                        mat = rotation * scaleMatrix * osg::Matrixd::translate( point ) * _world2local;
                    }
                    else
                    {
                        mat = scaleMatrix * osg::Matrixd::translate( point ) * _world2local;
                    }

                    osg::MatrixTransform* xform = new osg::MatrixTransform();
                    xform->setMatrix( mat );

                    xform->addChild( model.get() );

                    attachPoint->addChild( xform );

                    // name the feature if necessary
                    if ( !_featureNameExpr.empty() )
                    {
                        const std::string& name = input->eval( _featureNameExpr, &context);
                        if ( !name.empty() )
                            xform->setName( name );
                    }
                }
            }
        }
    }

    return true;
}
    /**
     * Creates a complete set of positioned label nodes from a feature list.
     */
    osg::Node* createNode(
        const FeatureList&   input,
        const Style&         style,
        const FilterContext& context )
    {
        const TextSymbol* text = style.get<TextSymbol>();
        if ( !text )
            return 0L;

        osg::Group* group = new osg::Group();
        Decluttering::setEnabled( group->getOrCreateStateSet(), true );
        if ( text->priority().isSet() )
        {
            DeclutteringOptions dco = Decluttering::getOptions();
            dco.sortByPriority() = text->priority().isSet();
            Decluttering::setOptions( dco );
        }    
        
        StringExpression  contentExpr ( *text->content() );
        NumericExpression priorityExpr( *text->priority() );

        if ( text->removeDuplicateLabels() == true )
        {
            // in remove-duplicates mode, make a list of unique features, selecting
            // the one with the largest area as the one we'll use for labeling.

            typedef std::pair<double, osg::ref_ptr<const Feature> > Entry;
            typedef std::map<std::string, Entry>                    EntryMap;

            EntryMap used;
    
            for( FeatureList::const_iterator i = input.begin(); i != input.end(); ++i )
            {
                Feature* feature = i->get();
                if ( feature && feature->getGeometry() )
                {
                    const std::string& value = feature->eval( contentExpr );
                    if ( !value.empty() )
                    {
                        double area = feature->getGeometry()->getBounds().area2d();
                        if ( used.find(value) == used.end() )
                        {
                            used[value] = Entry(area, feature);
                        }
                        else 
                        {
                            Entry& biggest = used[value];
                            if ( area > biggest.first )
                            {
                                biggest.first = area;
                                biggest.second = feature;
                            }
                        }
                    }
                }
            }

            for( EntryMap::iterator i = used.begin(); i != used.end(); ++i )
            {
                const std::string& value = i->first;
                const Feature* feature = i->second.second.get();
                group->addChild( makeLabelNode(context, feature, value, text, priorityExpr) );
            }
        }

        else
        {
            for( FeatureList::const_iterator i = input.begin(); i != input.end(); ++i )
            {
                const Feature* feature = i->get();
                if ( !feature )
                    continue;

                const Geometry* geom = feature->getGeometry();
                if ( !geom )
                    continue;

                const std::string& value = feature->eval( contentExpr, &context );
                if ( value.empty() )
                    continue;

                group->addChild( makeLabelNode(context, feature, value, text, priorityExpr) );
            }
        }

#if 0 // good idea but needs work.
        DepthOffsetGroup* dog = new DepthOffsetGroup();
        dog->setMinimumOffset( 500.0 );
        dog->addChild( group );
        return dog;
#endif
        return group;
    }
    //override
    bool renderFeaturesForStyle(
        const Style&       style,
        const FeatureList& features,
        osg::Referenced*   buildData,
        const GeoExtent&   imageExtent,
        osg::Image*        image )
    {
        // A processing context to use with the filters:
        FilterContext context;
        context.setProfile( getFeatureSource()->getFeatureProfile() );

        const LineSymbol*    masterLine = style.getSymbol<LineSymbol>();
        const PolygonSymbol* masterPoly = style.getSymbol<PolygonSymbol>();

        // sort into bins, making a copy for lines that require buffering.
        FeatureList polygons;
        FeatureList lines;

        for(FeatureList::const_iterator f = features.begin(); f != features.end(); ++f)
        {
            if ( f->get()->getGeometry() )
            {
                if ( masterPoly || f->get()->style()->has<PolygonSymbol>() )
                {
                    polygons.push_back( f->get() );
                }

                if ( masterLine || f->get()->style()->has<LineSymbol>() )
                {
                    Feature* newFeature = new Feature( *f->get() );
                    if ( !newFeature->getGeometry()->isLinear() )
                    {
                        newFeature->setGeometry( newFeature->getGeometry()->cloneAs(Geometry::TYPE_RING) );
                    }
                    lines.push_back( newFeature );
                }
            }
        }

        // initialize:
        RenderFrame frame;
        frame.xmin = imageExtent.xMin();
        frame.ymin = imageExtent.yMin();
        frame.xf   = (double)image->s() / imageExtent.width();
        frame.yf   = (double)image->t() / imageExtent.height();

        if ( lines.size() > 0 )
        {
            // We are buffering in the features native extent, so we need to use the
            // transformed extent to get the proper "resolution" for the image
            const SpatialReference* featureSRS = context.profile()->getSRS();
            GeoExtent transformedExtent = imageExtent.transform(featureSRS);

            double trans_xf = (double)image->s() / transformedExtent.width();
            double trans_yf = (double)image->t() / transformedExtent.height();

            // resolution of the image (pixel extents):
            double xres = 1.0/trans_xf;
            double yres = 1.0/trans_yf;

            // downsample the line data so that it is no higher resolution than to image to which
            // we intend to rasterize it. If you don't do this, you run the risk of the buffer 
            // operation taking forever on very high-res input data.
            if ( _options.optimizeLineSampling() == true )
            {
                ResampleFilter resample;
                resample.minLength() = osg::minimum( xres, yres );
                context = resample.push( lines, context );
            }

            // now run the buffer operation on all lines:
            BufferFilter buffer;
            double lineWidth = 1.0;
            if ( masterLine )
            {
                buffer.capStyle() = masterLine->stroke()->lineCap().value();

                if ( masterLine->stroke()->width().isSet() )
                {
                    lineWidth = masterLine->stroke()->width().value();

                    GeoExtent imageExtentInFeatureSRS = imageExtent.transform(featureSRS);
                    double pixelWidth = imageExtentInFeatureSRS.width() / (double)image->s();

                    // if the width units are specified, process them:
                    if (masterLine->stroke()->widthUnits().isSet() &&
                        masterLine->stroke()->widthUnits().get() != Units::PIXELS)
                    {
                        const Units& featureUnits = featureSRS->getUnits();
                        const Units& strokeUnits  = masterLine->stroke()->widthUnits().value();

                        // if the units are different than those of the feature data, we need to
                        // do a units conversion.
                        if ( featureUnits != strokeUnits )
                        {
                            if ( Units::canConvert(strokeUnits, featureUnits) )
                            {
                                // linear to linear, no problem
                                lineWidth = strokeUnits.convertTo( featureUnits, lineWidth );
                            }
                            else if ( strokeUnits.isLinear() && featureUnits.isAngular() )
                            {
                                // linear to angular? approximate degrees per meter at the 
                                // latitude of the tile's centroid.
                                lineWidth = masterLine->stroke()->widthUnits()->convertTo(Units::METERS, lineWidth);
                                double circ = featureSRS->getEllipsoid()->getRadiusEquator() * 2.0 * osg::PI;
                                double x, y;
                                context.profile()->getExtent().getCentroid(x, y);
                                double radians = (lineWidth/circ) * cos(osg::DegreesToRadians(y));
                                lineWidth = osg::RadiansToDegrees(radians);
                            }
                        }

                        // enfore a minimum width of one pixel.
                        float minPixels = masterLine->stroke()->minPixels().getOrUse( 1.0f );
                        lineWidth = osg::clampAbove(lineWidth, pixelWidth*minPixels);
                    }

                    else // pixels
                    {
                        lineWidth *= pixelWidth;
                    }
                }
            }

            buffer.distance() = lineWidth * 0.5;   // since the distance is for one side
            buffer.push( lines, context );
        }

        // Transform the features into the map's SRS:
        TransformFilter xform( imageExtent.getSRS() );
        xform.setLocalizeCoordinates( false );
        FilterContext polysContext = xform.push( polygons, context );
        FilterContext linesContext = xform.push( lines, context );

        // set up the AGG renderer:
        agg::rendering_buffer rbuf( image->data(), image->s(), image->t(), image->s()*4 );

        // Create the renderer and the rasterizer
        agg::renderer<agg::span_abgr32> ren(rbuf);
        agg::rasterizer ras;

        // Setup the rasterizer
        ras.gamma(1.3);
        ras.filling_rule(agg::fill_even_odd);

        // construct an extent for cropping the geometry to our tile.
        // extend just outside the actual extents so we don't get edge artifacts:
        GeoExtent cropExtent = GeoExtent(imageExtent);
        cropExtent.scale(1.1, 1.1);

        osg::ref_ptr<Symbology::Polygon> cropPoly = new Symbology::Polygon( 4 );
        cropPoly->push_back( osg::Vec3d( cropExtent.xMin(), cropExtent.yMin(), 0 ));
        cropPoly->push_back( osg::Vec3d( cropExtent.xMax(), cropExtent.yMin(), 0 ));
        cropPoly->push_back( osg::Vec3d( cropExtent.xMax(), cropExtent.yMax(), 0 ));
        cropPoly->push_back( osg::Vec3d( cropExtent.xMin(), cropExtent.yMax(), 0 ));

        // render the polygons
        for(FeatureList::iterator i = polygons.begin(); i != polygons.end(); i++)
        {
            Feature*  feature  = i->get();
            Geometry* geometry = feature->getGeometry();

            osg::ref_ptr<Geometry> croppedGeometry;
            if ( geometry->crop( cropPoly.get(), croppedGeometry ) )
            {
                const PolygonSymbol* poly =
                    feature->style().isSet() && feature->style()->has<PolygonSymbol>() ? feature->style()->get<PolygonSymbol>() :
                    masterPoly;
                
                const osg::Vec4 color = poly ? static_cast<osg::Vec4>(poly->fill()->color()) : osg::Vec4(1,1,1,1);
                rasterize(croppedGeometry.get(), color, frame, ras, ren);
            }
        }

        // render the lines
        for(FeatureList::iterator i = lines.begin(); i != lines.end(); i++)
        {
            Feature*  feature  = i->get();
            Geometry* geometry = feature->getGeometry();

            osg::ref_ptr<Geometry> croppedGeometry;
            if ( geometry->crop( cropPoly.get(), croppedGeometry ) )
            {
                const LineSymbol* line =
                    feature->style().isSet() && feature->style()->has<LineSymbol>() ? feature->style()->get<LineSymbol>() :
                    masterLine;
                
                const osg::Vec4 color = line ? static_cast<osg::Vec4>(line->stroke()->color()) : osg::Vec4(1,1,1,1);
                rasterize(croppedGeometry.get(), color, frame, ras, ren);
            }
        }

        return true;
    }
Ejemplo n.º 18
0
osg::Node* BuildTextOperator::operator()(const FeatureList&   features, 
                                         const TextSymbol*    symbol,
                                         const FilterContext& context)
{
    if (!symbol) return 0;

    std::set< std::string > labelNames;

    bool removeDuplicateLabels = symbol->removeDuplicateLabels().isSet() ? symbol->removeDuplicateLabels().get() : false;

    osg::Geode* result = new osg::Geode;
    for (FeatureList::const_iterator itr = features.begin(); itr != features.end(); ++itr)
    {
        Feature* feature = itr->get();
        if (!feature->getGeometry()) continue;

        std::string text;
        //If the feature is a TextAnnotation, just get the value from it
        TextAnnotation* annotation = dynamic_cast<TextAnnotation*>(feature);
        if (annotation)
        {
            text = annotation->text();
        }
        else if (symbol->content().isSet())
        {
             //Get the text from the specified content and referenced attributes
             std::string content = symbol->content().value();
             text = parseAttributes(feature, content, symbol->contentAttributeDelimiter().value());
        }
        else if (symbol->attribute().isSet())
        {
            //Get the text from the specified attribute
            std::string attr = symbol->attribute().value();
            text = feature->getAttr(attr);
        }

        if (text.empty()) continue;

        //See if there is a duplicate name
        if (removeDuplicateLabels && labelNames.find(text) != labelNames.end()) continue;

        bool rotateToScreen = symbol->rotateToScreen().isSet() ? symbol->rotateToScreen().value() : false;

        // find the centroid
        osg::Vec3d position;
        osg::Quat orientation;

        GeometryIterator gi( feature->getGeometry() );
        while( gi.hasMore() )
        {
            Geometry* geom = gi.next();

            TextSymbol::LinePlacement linePlacement = symbol->linePlacement().isSet() ? symbol->linePlacement().get() : TextSymbol::LINEPLACEMENT_ALONG_LINE;
            if (geom->getType() == Symbology::Geometry::TYPE_LINESTRING && linePlacement == TextSymbol::LINEPLACEMENT_ALONG_LINE)
            {
                //Compute the "middle" of the line string
                LineString* lineString = static_cast<LineString*>(geom);
                double length = lineString->getLength();
                double center = length / 2.0;
                osg::Vec3d start, end;
                if (lineString->getSegment(center, start, end))
                {
                    TextSymbol::LineOrientation lineOrientation = symbol->lineOrientation().isSet() ? symbol->lineOrientation().get() : TextSymbol::LINEORIENTATION_HORIZONTAL;

                    position = (end + start) / 2.0;
                    //We don't want to orient the text at all if we are rotating to the screen
                    if (!rotateToScreen && lineOrientation != TextSymbol::LINEORIENTATION_HORIZONTAL)
                    {
                        osg::Vec3d dir = (end-start);
                        dir.normalize();

                        if (lineOrientation == TextSymbol::LINEORIENTATION_PERPENDICULAR)
                        {
                            osg::Vec3d up(0,0,1);
                            const SpatialReference* srs = context.profile()->getSRS();
                            if (srs && context.isGeocentric() && srs->getEllipsoid())
                            {
                                osg::Vec3d w = context.toWorld( position );
                                up = srs->getEllipsoid()->computeLocalUpVector(w.x(), w.y(), w.z());
                            }
                            dir = up ^ dir;
                        }
                        orientation.makeRotate(osg::Vec3d(1,0,0), dir);
                    }                
                }
                else
                {
                    //Fall back on using the center
                    position = lineString->getBounds().center();
                }
            }
            else
            {
              position = geom->getBounds().center();
            }
        }
        
        osgText::Text* t = new osgText::Text();
        t->setText( text );

        std::string font = "fonts/arial.ttf";
        if (symbol->font().isSet() && !symbol->font().get().empty())
        {
            font = symbol->font().value();
        }

        t->setFont( font );
        t->setAutoRotateToScreen( rotateToScreen );
        
        TextSymbol::SizeMode sizeMode = symbol->sizeMode().isSet() ? symbol->sizeMode().get() : TextSymbol::SIZEMODE_SCREEN;
        if (sizeMode == TextSymbol::SIZEMODE_SCREEN) {
            t->setCharacterSizeMode( osgText::TextBase::SCREEN_COORDS );
        }
        else if (sizeMode == TextSymbol::SIZEMODE_OBJECT) {
            t->setCharacterSizeMode( osgText::TextBase::OBJECT_COORDS );
        }
        float size = symbol->size().isSet() ? symbol->size().get() : 32.0f;
        t->setCharacterSize( size );
        //t->setCharacterSizeMode( osgText::TextBase::OBJECT_COORDS_WITH_MAXIMUM_SCREEN_SIZE_CAPPED_BY_FONT_HEIGHT );
        //t->setCharacterSize( 300000.0f );
        t->setPosition( position );
        t->setRotation( orientation);
        t->setAlignment( osgText::TextBase::CENTER_CENTER );
        t->getOrCreateStateSet()->setAttributeAndModes( new osg::Depth(osg::Depth::ALWAYS), osg::StateAttribute::ON );
        t->getOrCreateStateSet()->setRenderBinDetails( 99999, "RenderBin" );

        // apply styling as appropriate:
        osg::Vec4f textColor = symbol->fill()->color();
        osg::Vec4f haloColor = symbol->halo()->color();

        t->setColor( textColor );
        t->setBackdropColor( haloColor );
        t->setBackdropType( osgText::Text::OUTLINE );

        if ( context.isGeocentric() )
        {
            // install a cluster culler
            t->setCullCallback( new CullPlaneCallback( position * context.inverseReferenceFrame() ) );
        }

        result->addDrawable( t );

        if (removeDuplicateLabels) labelNames.insert(text);
    }
    return result;
}
Ejemplo n.º 19
0
    /**
     * Creates a complete set of positioned label nodes from a feature list.
     */
    osg::Node* createNode(
        const FeatureList&   input,
        const Style&         style,
        const FilterContext& context )
    {
        const TextSymbol* text = style.get<TextSymbol>();

        osg::Group* group = 0L;
        std::set<std::string> used; // to prevent dupes
        bool skipDupes = (text->removeDuplicateLabels() == true);

        StringExpression  contentExpr ( *text->content() );
        NumericExpression priorityExpr( *text->priority() );

        //bool makeECEF = false;
        const SpatialReference* ecef = 0L;
        if ( context.isGeoreferenced() )
        {
            //makeECEF = context.getSession()->getMapInfo().isGeocentric();
            ecef = context.getSession()->getMapSRS()->getECEF();
        }

        for( FeatureList::const_iterator i = input.begin(); i != input.end(); ++i )
        {
            const Feature* feature = i->get();
            if ( !feature )
                continue;

            const Geometry* geom = feature->getGeometry();
            if ( !geom )
                continue;

            osg::Vec3d centroid  = geom->getBounds().center();

            if ( ecef )
            {
                context.profile()->getSRS()->transform( centroid, ecef, centroid );
                //context.profile()->getSRS()->transformToECEF( centroid, centroid );
            }

            const std::string& value = feature->eval( contentExpr, &context );

            if ( !value.empty() && (!skipDupes || used.find(value) == used.end()) )
            {
                if ( !group )
                {
                    group = new osg::Group();
                }

                double priority = feature->eval( priorityExpr, &context );

                Controls::LabelControl* label = new Controls::LabelControl( value );
                if ( text->fill().isSet() )
                    label->setForeColor( text->fill()->color() );
                if ( text->halo().isSet() )
                    label->setHaloColor( text->halo()->color() );
                //if ( text->size().isSet() )
                //    label->setFontSize( *text->size() );
                if ( text->font().isSet() )
                {
                    // mitigates mipmapping issues that cause rendering artifacts for some fonts/placement
                    osgText::Font* font = osgText::readFontFile(*text->font() );
                    // mitigates mipmapping issues that cause rendering artifacts for some fonts/placement
                    if ( font )
                        font->setGlyphImageMargin( 2 );
                    label->setFont( font );
                }

                Controls::ControlNode* node = new Controls::ControlNode( label, priority );

                osg::MatrixTransform* xform = new osg::MatrixTransform( osg::Matrixd::translate(centroid) );
                xform->addChild( node );

                // for a geocentric map, do a simple dot product cull.
                if ( ecef )
                {
                    xform->setCullCallback( new HorizonCullCallback(*ecef->getEllipsoid()) );
                    group->addChild( xform );
                }
                else
                {
                    group->addChild( xform );
                }

                if ( skipDupes )
                {
                    used.insert( value );
                }
            }
        }

        return group;
    }