Пример #1
0
void
FeatureModelGraph::redraw()
{
    removeChildren( 0, getNumChildren() );

    osg::Node* node = 0;
    // if there's a display schema in place, set up for quadtree paging.
    if ( _options.layout().isSet() || _useTiledSource )
    {
        node = setupPaging();
    }
    else
    {
        FeatureLevel defaultLevel( 0.0f, FLT_MAX );
        
        //Remove all current children
        node = buildLevel( defaultLevel, GeoExtent::INVALID, 0 );
    }

    float minRange = -FLT_MAX;
    if ( _options.minRange().isSet() ) 
        minRange = std::max(minRange, *_options.minRange());

    if ( _options.layout().isSet() && _options.layout()->minRange().isSet() )
        minRange = std::max(minRange, *_options.layout()->minRange());

    float maxRange = FLT_MAX;
    if ( _options.maxRange().isSet() ) 
        maxRange = std::min(maxRange, *_options.maxRange());

    if ( _options.layout().isSet() && _options.layout()->maxRange().isSet() )
        maxRange = std::min(maxRange, *_options.layout()->maxRange());
    
    //If they've specified a min/max range, setup an LOD
    if ( minRange != -FLT_MAX || maxRange != FLT_MAX )
    {        
        ElevationLOD *lod = new ElevationLOD(_session->getMapInfo().getSRS(), minRange, maxRange );
        lod->addChild( node );
        node = lod;        
    }


    addChild( node );

    _session->getFeatureSource()->sync( _revision );
    _dirty = false;
}
Пример #2
0
void
FeatureModelGraph::redraw()
{
    // clear it out
    removeChildren( 0, getNumChildren() );

    // zero out any decorators
    _clampable          = 0L;
    _drapeable          = 0L;
    _overlayPlaceholder = new osg::Group();
    _overlayInstalled   = _overlayPlaceholder;

    osg::Node* node = 0;
    // if there's a display schema in place, set up for quadtree paging.
    if ( _options.layout().isSet() || _useTiledSource )
    {
        node = setupPaging();
    }
    else
    {
        FeatureLevel defaultLevel( 0.0f, FLT_MAX );
        
        //Remove all current children
        node = buildLevel( defaultLevel, GeoExtent::INVALID, 0 );
    }

    float minRange = -FLT_MAX;
    if ( _options.minRange().isSet() ) 
        minRange = std::max(minRange, *_options.minRange());

    if ( _options.layout().isSet() && _options.layout()->minRange().isSet() )
        minRange = std::max(minRange, *_options.layout()->minRange());

    float maxRange = FLT_MAX;
    if ( _options.maxRange().isSet() ) 
        maxRange = std::min(maxRange, *_options.maxRange());

    if ( _options.layout().isSet() && _options.layout()->maxRange().isSet() )
        maxRange = std::min(maxRange, *_options.layout()->maxRange());
    
    //If they've specified a min/max range, setup an LOD
    if ( minRange != -FLT_MAX || maxRange != FLT_MAX )
    {        
        // todo: revisit this, make sure this is still right.
        ElevationLOD *lod = new ElevationLOD(_session->getMapInfo().getSRS(), minRange, maxRange );
        lod->addChild( node );
        node = lod;
    }

    // If we want fading, install fading.
    if ( _options.fading().isSet() )
    {
        FadeEffect* fader = new FadeEffect();
        fader->setFadeDuration( *_options.fading()->duration() );
        fader->setMaxRange( *_options.fading()->maxRange() );
        fader->setAttenuationDistance( *_options.fading()->attenuationDistance() );
        fader->addChild( node );
        node = fader;
    }

    // overlay placeholder. this will make it easier to 
    // replace with a clamper/draper later if necessary
    {
        _overlayInstalled->addChild( node );
        node = _overlayInstalled;
    }

    addChild( node );

    _session->getFeatureSource()->sync( _revision );
    _dirty = false;
}
Пример #3
0
/**
 * Builds geometry for feature data at a particular level, and constrained by an extent.
 * The extent is either (a) expressed in "extent" literally, as is the case in a non-tiled
 * data source, or (b) expressed implicitly by a TileKey, which is the case for a tiled
 * data source.
 */
osg::Group*
FeatureModelGraph::buildLevel( const FeatureLevel& level, const GeoExtent& extent, const TileKey* key )
{
    // set up for feature indexing if appropriate:
    osg::ref_ptr<osg::Group> group;
    FeatureSourceIndexNode* index = 0L;

    if ( _session->getFeatureSource() && _options.featureIndexing().isSet() )
    {
        index = new FeatureSourceIndexNode( _session->getFeatureSource(), *_options.featureIndexing() );
        group = index;
    }
    else
    {
        group = new osg::Group();
    }

    // form the baseline query, which does a spatial query based on the working extent.
    Query query;
    if ( extent.isValid() )
        query.bounds() = extent.bounds();

    // add a tile key to the query if there is one, to support TFS-style queries
    if ( key )
        query.tileKey() = *key;

    // does the level have a style name set?
    if ( level.styleName().isSet() )
    {
        osg::Node* node = 0L;
        const Style* style = _session->styles()->getStyle( *level.styleName(), false );
        if ( style )
        {
            // found a specific style to use.
            node = createStyleGroup( *style, query, index );
            if ( node )
                group->addChild( node );
        }
        else
        {
            const StyleSelector* selector = _session->styles()->getSelector( *level.styleName() );
            if ( selector )
            {
                buildStyleGroups( selector, query, index, group.get() );
            }
        }
    }

    else
    {
        Style defaultStyle;

        if ( _session->styles()->selectors().size() == 0 )
        {
            // attempt to glean the style from the feature source name:
            defaultStyle = *_session->styles()->getStyle( 
                *_session->getFeatureSource()->getFeatureSourceOptions().name() );
        }

        osg::Node* node = build( defaultStyle, query, extent, index );
        if ( node )
            group->addChild( node );
    }

    if ( group->getNumChildren() > 0 )
    {
        // account for a min-range here. Do not address the max-range here; that happens
        // above when generating paged LOD nodes, etc.
        float minRange = level.minRange();
        if ( minRange > 0.0f )
        {
            ElevationLOD* lod = new ElevationLOD( _session->getMapSRS() );
            lod->setMinElevation( minRange );
            lod->addChild( group.get() );
            group = lod;
        }

        // install a cluster culler.
        if ( _session->getMapInfo().isGeocentric() && _options.clusterCulling() == true )
        {
            const FeatureProfile* featureProfile = _session->getFeatureSource()->getFeatureProfile();
            const GeoExtent& ccExtent = extent.isValid() ? extent : featureProfile->getExtent();
            if ( ccExtent.isValid() )
            {
                // if the extent is more than 90 degrees, bail
                GeoExtent geodeticExtent = ccExtent.transform( ccExtent.getSRS()->getGeographicSRS() );
                if ( geodeticExtent.width() < 90.0 && geodeticExtent.height() < 90.0 )
                {
                    // get the geocentric tile center:
                    osg::Vec3d tileCenter;
                    ccExtent.getCentroid( tileCenter.x(), tileCenter.y() );

                    osg::Vec3d centerECEF;
                    ccExtent.getSRS()->transform( tileCenter, _session->getMapSRS()->getECEF(), centerECEF );
                    //ccExtent.getSRS()->transformToECEF( tileCenter, centerECEF );

                    osg::NodeCallback* ccc = ClusterCullingFactory::create2( group.get(), centerECEF );
                    if ( ccc )
                        group->addCullCallback( ccc );
                }
            }
        }

        // if indexing is enabled, build the index now.
        if ( index )
            index->reindex();

        return group.release();
    }

    else
    {
        return 0L;
    }
}
Пример #4
0
void
FeatureModelGraph::redraw()
{
    removeChildren( 0, getNumChildren() );

    // initialize the clamping node first, since we need it in order
    // to build the default level
    _clamper = new ClampableNode(0L, false);

    osg::Node* node = 0;
    // if there's a display schema in place, set up for quadtree paging.
    if ( _options.layout().isSet() || _useTiledSource )
    {
        node = setupPaging();
    }
    else
    {
        FeatureLevel defaultLevel( 0.0f, FLT_MAX );
        
        //Remove all current children
        node = buildLevel( defaultLevel, GeoExtent::INVALID, 0 );
    }

    float minRange = -FLT_MAX;
    if ( _options.minRange().isSet() ) 
        minRange = std::max(minRange, *_options.minRange());

    if ( _options.layout().isSet() && _options.layout()->minRange().isSet() )
        minRange = std::max(minRange, *_options.layout()->minRange());

    float maxRange = FLT_MAX;
    if ( _options.maxRange().isSet() ) 
        maxRange = std::min(maxRange, *_options.maxRange());

    if ( _options.layout().isSet() && _options.layout()->maxRange().isSet() )
        maxRange = std::min(maxRange, *_options.layout()->maxRange());
    
    //If they've specified a min/max range, setup an LOD
    if ( minRange != -FLT_MAX || maxRange != FLT_MAX )
    {        
        ElevationLOD *lod = new ElevationLOD(_session->getMapInfo().getSRS(), minRange, maxRange );
        lod->addChild( node );
        node = lod;
    }

    // If we want fading, install fading.
    if ( _options.fading().isSet() )
    {
        FadeEffect* fader = new FadeEffect();
        fader->setFadeDuration( *_options.fading()->duration() );
        fader->setMaxRange( *_options.fading()->maxRange() );
        fader->setAttenuationDistance( *_options.fading()->attenuationDistance() );
        fader->addChild( node );
        node = fader;
    }

    // clamper. TODO: figure out if we can optionally include this
    {
        _clamper->addChild( node );
        node = _clamper;
    }

    addChild( node );

    _session->getFeatureSource()->sync( _revision );
    _dirty = false;
}